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Fiber-optic communication systems have advanced dramatically over the last four decades, since the era of copper cables, resulting in low-cost and high-bandwidth transmission. Fiber optics is now the backbone of the internet and long-distance telecommunication. Without it we would not enjoy the benefits of high-speed internet, or low-rate international telephone calls. This book introduces the basic concepts of fiber-optic communication in a pedagogical way. The important mathematical results are derived by first principles rather than citing research articles. In addition, physical…mehr
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Fiber-optic communication systems have advanced dramatically over the last four decades, since the era of copper cables, resulting in low-cost and high-bandwidth transmission. Fiber optics is now the backbone of the internet and long-distance telecommunication. Without it we would not enjoy the benefits of high-speed internet, or low-rate international telephone calls.
This book introduces the basic concepts of fiber-optic communication in a pedagogical way. The important mathematical results are derived by first principles rather than citing research articles. In addition, physical interpretations and real-world analogies are provided to help students grasp the fundamental concepts.
Key Features:
Lucid explanation of key topics such as fibers, lasers, and photodetectors.
Includes recent developments such as coherent communication and digital signal processing.
Comprehensive treatment of fiber nonlinear transmission.
Worked examples, exercises, and answers.
Accompanying website with PowerPoint slides and numerical experiments in MATLAB.
Intended primarily for senior undergraduates and graduates studying fiber-optic communications, the book is also suitable as a professional resource for researchers working in the field of fiber-optic communications.
Hinweis: Dieser Artikel kann nur an eine deutsche Lieferadresse ausgeliefert werden.
This book introduces the basic concepts of fiber-optic communication in a pedagogical way. The important mathematical results are derived by first principles rather than citing research articles. In addition, physical interpretations and real-world analogies are provided to help students grasp the fundamental concepts.
Key Features:
Lucid explanation of key topics such as fibers, lasers, and photodetectors.
Includes recent developments such as coherent communication and digital signal processing.
Comprehensive treatment of fiber nonlinear transmission.
Worked examples, exercises, and answers.
Accompanying website with PowerPoint slides and numerical experiments in MATLAB.
Intended primarily for senior undergraduates and graduates studying fiber-optic communications, the book is also suitable as a professional resource for researchers working in the field of fiber-optic communications.
Hinweis: Dieser Artikel kann nur an eine deutsche Lieferadresse ausgeliefert werden.
Produktdetails
- Produktdetails
- Verlag: Wiley & Sons
- Artikelnr. des Verlages: 14551867000
- 1. Auflage
- Seitenzahl: 576
- Erscheinungstermin: 12. Mai 2014
- Englisch
- Abmessung: 255mm x 200mm x 33mm
- Gewicht: 1235g
- ISBN-13: 9780470518670
- ISBN-10: 0470518677
- Artikelnr.: 39373523
- Verlag: Wiley & Sons
- Artikelnr. des Verlages: 14551867000
- 1. Auflage
- Seitenzahl: 576
- Erscheinungstermin: 12. Mai 2014
- Englisch
- Abmessung: 255mm x 200mm x 33mm
- Gewicht: 1235g
- ISBN-13: 9780470518670
- ISBN-10: 0470518677
- Artikelnr.: 39373523
Shiva Kumar, Department of Electrical and Computer Engineering, McMaster University, Canada M. Jamal Deen, Department of Electrical and Computer Engineering, McMaster University, Canada
Preface xv Acknowledgments xvii 1 Electromagnetics and Optics 1 1.1
Introduction 1 1.2 Coulomb's Law and Electric Field Intensity 1 1.3
Ampere's Law and Magnetic Field Intensity 3 1.4 Faraday's Law 6 1.4.1
Meaning of Curl 7 1.4.2 Ampere's Law in Differential Form 9 1.5 Maxwell's
Equations 9 1.5.1 Maxwell's Equation in a Source-Free Region 10 1.5.2
Electromagnetic Wave 10 1.5.3 Free-Space Propagation 11 1.5.4 Propagation
in a Dielectric Medium 12 1.6 1-Dimensional Wave Equation 12 1.6.1
1-Dimensional Plane Wave 15 1.6.2 Complex Notation 16 1.7 Power Flow and
Poynting Vector 17 1.8 3-Dimensional Wave Equation 19 1.9 Reflection and
Refraction 21 1.9.1 Refraction 22 1.10 Phase Velocity and Group Velocity 26
1.11 Polarization of Light 31 Exercises 31 Further Reading 34 References 34
2 Optical Fiber Transmission 35 2.1 Introduction 35 2.2 Fiber Structure 35
2.3 Ray Propagation in Fibers 36 2.3.1 Numerical Aperture 37 2.3.2
Multi-Mode and Single-Mode Fibers 39 2.3.3 Dispersion in Multi-Mode Fibers
39 2.3.4 Graded-Index Multi-Mode Fibers 42 2.4 Modes of a Step-Index
Optical Fiber* 44 2.4.1 Guided Modes 46 2.4.2 Mode Cutoff 51 2.4.3
Effective Index 52 2.4.4 2-Dimensional Planar Waveguide Analogy 53 2.4.5
Radiation Modes 54 2.4.6 Excitation of Guided Modes 55 2.5 Pulse
Propagation in Single-Mode Fibers 57 2.5.1 Power and the dBm Unit 60 2.6
Comparison between Multi-Mode and Single-Mode Fibers 68 2.7 Single-Mode
Fiber Design Considerations 68 2.7.1 Cutoff Wavelength 68 2.7.2 Fiber Loss
69 2.7.3 Fiber Dispersion 74 2.7.4 Dispersion Slope 76 2.7.5 Polarization
Mode Dispersion 78 2.7.6 Spot Size 79 2.8 Dispersion-Compensating Fibers
(DCFs) 79 2.9 Additional Examples 81 Exercises 89 Further Reading 91
References 91 3 Lasers 93 3.1 Introduction 93 3.2 Basic Concepts 93 3.3
Conditions for Laser Oscillations 101 3.4 Laser Examples 108 3.4.1 Ruby
Laser 108 3.4.2 Semiconductor Lasers 108 3.5 Wave-Particle Duality 108 3.6
Laser Rate Equations 110 3.7 Review of Semiconductor Physics 113 3.7.1 The
PN Junctions 118 3.7.2 Spontaneous and Stimulated Emission at the PN
Junction 120 3.7.3 Direct and Indirect Band-Gap Semiconductors 120 3.8
Semiconductor Laser Diode 124 3.8.1 Heterojunction Lasers 124 3.8.2
Radiative and Non-Radiative Recombination 126 3.8.3 Laser Rate Equations
126 3.8.4 Steady-State Solutions of Rate Equations 128 3.8.5
Distributed-Feedback Lasers 132 3.9 Additional Examples 133 Exercises 136
Further Reading 138 References 138 4 Optical Modulators and Modulation
Schemes 139 4.1 Introduction 139 4.2 Line Coder 139 4.3 Pulse Shaping 139
4.4 Power Spectral Density 141 4.4.1 Polar Signals 142 4.4.2 Unipolar
Signals 142 4.5 Digital Modulation Schemes 144 4.5.1 Amplitude-Shift Keying
144 4.5.2 Phase-Shift Keying 144 4.5.3 Frequency-Shift Keying 145 4.5.4
Differential Phase-Shift Keying 146 4.6 Optical Modulators 149 4.6.1 Direct
Modulation 149 4.6.2 External Modulators 150 4.7 Optical Realization of
Modulation Schemes 158 4.7.1 Amplitude-Shift Keying 158 4.7.2 Phase-Shift
Keying 160 4.7.3 Differential Phase-Shift Keying 162 4.7.4 Frequency-Shift
Keying 163 4.8 Partial Response Signals* 163 4.8.1 Alternate Mark Inversion
169 4.9 Multi-Level Signaling* 172 4.9.1 M-ASK 172 4.9.2 M-PSK 174 4.9.3
Quadrature Amplitude Modulation 178 4.10 Additional Examples 182 Exercises
185 Further Reading 186 References 187 5 Optical Receivers 189 5.1
Introduction 189 5.2 Photodetector Performance Characteristics 190 5.2.1
Quantum Efficiency 193 5.2.2 Responsivity or Photoresponse 197 5.2.3
Photodetector Design Rules 199 5.2.4 Dark Current 200 5.2.5 Speed or
Response Time 201 5.2.6 Linearity 202 5.3 Common Types of Photodetectors
202 5.3.1 pn Photodiode 203 5.3.2 pin Photodetector (pin-PD) 203 5.3.3
Schottky Barrier Photodetector 204 5.3.4 Metal-Semiconductor-Metal
Photodetector 204 5.3.5 Photoconductive Detector 206 5.3.6 Phototransistor
206 5.3.7 Avalanche Photodetectors 207 5.3.8 Advanced Photodetectors* 212
5.4 Direct Detection Receivers 219 5.4.1 Optical Receiver ICs 220 5.5
Receiver Noise 224 5.5.1 Shot Noise 224 5.5.2 Thermal Noise 226 5.5.3
Signal-to-Noise Ratio, SNR 227 5.6 Coherent Receivers 227 5.6.1
Single-Branch Coherent Receiver 228 5.6.2 Balanced Coherent Receiver 232
5.6.3 Single-Branch IQ Coherent Receiver 234 5.6.4 Balanced IQ Receiver 237
5.6.5 Polarization Effects 239 Exercises 242 References 244 6 Optical
Amplifiers 247 6.1 Introduction 247 6.2 Optical Amplifier Model 247 6.3
Amplified Spontaneous Emission in Two-Level Systems 248 6.4 Low-Pass
Representation of ASE Noise 249 6.5 System Impact of ASE 251 6.5.1
Signal-ASE Beat Noise 253 6.5.2 ASE-ASE Beat Noise 256 6.5.3 Total Mean and
Variance 256 6.5.4 Polarization Effects 258 6.5.5 Amplifier Noise Figure
260 6.5.6 Optical Signal-to Noise Ratio 262 6.6 Semiconductor Optical
Amplifiers 263 6.6.1 Cavity-Type Semiconductor Optical Amplifiers 264 6.6.2
Traveling-Wave Amplifiers 268 6.6.3 AR Coating 270 6.6.4 Gain Saturation
271 6.7 Erbium-Doped Fiber Amplifier 274 6.7.1 Gain Spectrum 274 6.7.2 Rate
Equations* 275 6.7.3 Amplified Spontaneous Emission 280 6.7.4 Comparison of
EDFA and SOA 281 6.8 Raman Amplifiers 282 6.8.1 Governing Equations 283
6.8.2 Noise Figure 287 6.8.3 Rayleigh Back Scattering 287 6.9 Additional
Examples 288 Exercises 298 Further Reading 300 References 300 7
Transmission System Design 301 7.1 Introduction 301 7.2 Fiber Loss-Induced
Limitations 301 7.2.1 Balanced Coherent Receiver 306 7.3 Dispersion-Induced
Limitations 313 7.4 ASE-Induced Limitations 315 7.4.1 Equivalent Noise
Figure 317 7.4.2 Impact of Amplifier Spacing 318 7.4.3 Direct Detection
Receiver 319 7.4.4 Coherent Receiver 322 7.4.5 Numerical Experiments 326
7.5 Additional Examples 327 Exercises 333 Further Reading 334 References
334 8 Performance Analysis 335 8.1 Introduction 335 8.2 Optimum Binary
Receiver for Coherent Systems 335 8.2.1 Realization of the Matched Filter
342 8.2.2 Error Probability with an Arbitrary Receiver Filter 345 8.3
Homodyne Receivers 345 8.3.1 PSK: Homodyne Detection 347 8.3.2 On-Off
Keying 349 8.4 Heterodyne Receivers 350 8.4.1 PSK: Synchronous Detection
351 8.4.2 OOK: Synchronous Detection 353 8.4.3 FSK: Synchronous Detection
356 8.4.4 OOK: Asynchronous Receiver 359 8.4.5 FSK: Asynchronous Detection
364 8.4.6 Comparison of Modulation Schemes with Heterodyne Receiver 367 8.5
Direct Detection 368 8.5.1 OOK 368 8.5.2 FSK 371 8.5.3 DPSK 374 8.5.4
Comparison of Modulation Schemes with Direct Detection 379 8.6 Additional
Examples 381 Exercises 387 References 388 9 Channel Multiplexing Techniques
389 9.1 Introduction 389 9.2 Polarization-Division Multiplexing 389 9.3
Wavelength-Division Multiplexing 391 9.3.1 WDM Components 394 9.3.2 WDM
Experiments 401 9.4 OFDM 402 9.4.1 OFDM Principle 402 9.4.2 Optical OFDM
Transmitter 406 9.4.3 Optical OFDM Receiver 407 9.4.4 Optical OFDM
Experiments 408 9.5 Time-Division Multiplexing 409 9.5.1 Multiplexing 409
9.5.2 Demultiplexing 410 9.5.3 OTDM Experiments 412 9.6 Additional Examples
413 Exercises 415 References 416 10 Nonlinear Effects in Fibers 419 10.1
Introduction 419 10.2 Origin of Linear and Nonlinear Refractive Indices 419
10.2.1 Absorption and Amplification 423 10.2.2 Nonlinear Susceptibility 424
10.3 Fiber Dispersion 426 10.4 Nonlinear Schrödinger Equation 428 10.5
Self-Phase Modulation 430 10.6 Combined Effect of Dispersion and SPM 433
10.7 Interchannel Nonlinear Effects 437 10.7.1 Cross-Phase Modulation 438
10.7.2 Four-Wave Mixing 448 10.8 Intrachannel Nonlinear Impairments 454
10.8.1 Intrachannel Cross-Phase Modulation 454 10.8.2 Intrachannel
Four-Wave Mixing 455 10.8.3 Intra- versus Interchannel Nonlinear Effects
457 10.9 Theory of Intrachannel Nonlinear Effects 457 10.9.1 Variance
Calculations 463 10.9.2 Numerical Simulations 466 10.10 Nonlinear Phase
Noise 471 10.10.1 Linear Phase Noise 471 10.10.2 Gordon-Mollenauer Phase
Noise 474 10.11 Stimulated Raman Scattering 478 10.11.1 Time Domain
Description 481 10.12 Additional Examples 483 Exercises 491 Further Reading
493 References 493 11 Digital Signal Processing 497 11.1 Introduction 497
11.2 Coherent Receiver 497 11.3 Laser Phase Noise 498 11.4 IF Estimation
and Compensation 501 11.5 Phase Estimation and Compensation 503 11.5.1
Phase Unwrapping 505 11.6 CD Equalization 506 11.6.1 Adaptive Equalizers
510 11.7 Polarization Mode Dispersion Equalization 513 11.8 Digital Back
Propagation 516 11.8.1 Multi-Span DBP 521 11.9 Additional Examples 522
Exercises 524 Further Reading 525 References 525 AppendixA 527 Appendix B
533 Index 537
Introduction 1 1.2 Coulomb's Law and Electric Field Intensity 1 1.3
Ampere's Law and Magnetic Field Intensity 3 1.4 Faraday's Law 6 1.4.1
Meaning of Curl 7 1.4.2 Ampere's Law in Differential Form 9 1.5 Maxwell's
Equations 9 1.5.1 Maxwell's Equation in a Source-Free Region 10 1.5.2
Electromagnetic Wave 10 1.5.3 Free-Space Propagation 11 1.5.4 Propagation
in a Dielectric Medium 12 1.6 1-Dimensional Wave Equation 12 1.6.1
1-Dimensional Plane Wave 15 1.6.2 Complex Notation 16 1.7 Power Flow and
Poynting Vector 17 1.8 3-Dimensional Wave Equation 19 1.9 Reflection and
Refraction 21 1.9.1 Refraction 22 1.10 Phase Velocity and Group Velocity 26
1.11 Polarization of Light 31 Exercises 31 Further Reading 34 References 34
2 Optical Fiber Transmission 35 2.1 Introduction 35 2.2 Fiber Structure 35
2.3 Ray Propagation in Fibers 36 2.3.1 Numerical Aperture 37 2.3.2
Multi-Mode and Single-Mode Fibers 39 2.3.3 Dispersion in Multi-Mode Fibers
39 2.3.4 Graded-Index Multi-Mode Fibers 42 2.4 Modes of a Step-Index
Optical Fiber* 44 2.4.1 Guided Modes 46 2.4.2 Mode Cutoff 51 2.4.3
Effective Index 52 2.4.4 2-Dimensional Planar Waveguide Analogy 53 2.4.5
Radiation Modes 54 2.4.6 Excitation of Guided Modes 55 2.5 Pulse
Propagation in Single-Mode Fibers 57 2.5.1 Power and the dBm Unit 60 2.6
Comparison between Multi-Mode and Single-Mode Fibers 68 2.7 Single-Mode
Fiber Design Considerations 68 2.7.1 Cutoff Wavelength 68 2.7.2 Fiber Loss
69 2.7.3 Fiber Dispersion 74 2.7.4 Dispersion Slope 76 2.7.5 Polarization
Mode Dispersion 78 2.7.6 Spot Size 79 2.8 Dispersion-Compensating Fibers
(DCFs) 79 2.9 Additional Examples 81 Exercises 89 Further Reading 91
References 91 3 Lasers 93 3.1 Introduction 93 3.2 Basic Concepts 93 3.3
Conditions for Laser Oscillations 101 3.4 Laser Examples 108 3.4.1 Ruby
Laser 108 3.4.2 Semiconductor Lasers 108 3.5 Wave-Particle Duality 108 3.6
Laser Rate Equations 110 3.7 Review of Semiconductor Physics 113 3.7.1 The
PN Junctions 118 3.7.2 Spontaneous and Stimulated Emission at the PN
Junction 120 3.7.3 Direct and Indirect Band-Gap Semiconductors 120 3.8
Semiconductor Laser Diode 124 3.8.1 Heterojunction Lasers 124 3.8.2
Radiative and Non-Radiative Recombination 126 3.8.3 Laser Rate Equations
126 3.8.4 Steady-State Solutions of Rate Equations 128 3.8.5
Distributed-Feedback Lasers 132 3.9 Additional Examples 133 Exercises 136
Further Reading 138 References 138 4 Optical Modulators and Modulation
Schemes 139 4.1 Introduction 139 4.2 Line Coder 139 4.3 Pulse Shaping 139
4.4 Power Spectral Density 141 4.4.1 Polar Signals 142 4.4.2 Unipolar
Signals 142 4.5 Digital Modulation Schemes 144 4.5.1 Amplitude-Shift Keying
144 4.5.2 Phase-Shift Keying 144 4.5.3 Frequency-Shift Keying 145 4.5.4
Differential Phase-Shift Keying 146 4.6 Optical Modulators 149 4.6.1 Direct
Modulation 149 4.6.2 External Modulators 150 4.7 Optical Realization of
Modulation Schemes 158 4.7.1 Amplitude-Shift Keying 158 4.7.2 Phase-Shift
Keying 160 4.7.3 Differential Phase-Shift Keying 162 4.7.4 Frequency-Shift
Keying 163 4.8 Partial Response Signals* 163 4.8.1 Alternate Mark Inversion
169 4.9 Multi-Level Signaling* 172 4.9.1 M-ASK 172 4.9.2 M-PSK 174 4.9.3
Quadrature Amplitude Modulation 178 4.10 Additional Examples 182 Exercises
185 Further Reading 186 References 187 5 Optical Receivers 189 5.1
Introduction 189 5.2 Photodetector Performance Characteristics 190 5.2.1
Quantum Efficiency 193 5.2.2 Responsivity or Photoresponse 197 5.2.3
Photodetector Design Rules 199 5.2.4 Dark Current 200 5.2.5 Speed or
Response Time 201 5.2.6 Linearity 202 5.3 Common Types of Photodetectors
202 5.3.1 pn Photodiode 203 5.3.2 pin Photodetector (pin-PD) 203 5.3.3
Schottky Barrier Photodetector 204 5.3.4 Metal-Semiconductor-Metal
Photodetector 204 5.3.5 Photoconductive Detector 206 5.3.6 Phototransistor
206 5.3.7 Avalanche Photodetectors 207 5.3.8 Advanced Photodetectors* 212
5.4 Direct Detection Receivers 219 5.4.1 Optical Receiver ICs 220 5.5
Receiver Noise 224 5.5.1 Shot Noise 224 5.5.2 Thermal Noise 226 5.5.3
Signal-to-Noise Ratio, SNR 227 5.6 Coherent Receivers 227 5.6.1
Single-Branch Coherent Receiver 228 5.6.2 Balanced Coherent Receiver 232
5.6.3 Single-Branch IQ Coherent Receiver 234 5.6.4 Balanced IQ Receiver 237
5.6.5 Polarization Effects 239 Exercises 242 References 244 6 Optical
Amplifiers 247 6.1 Introduction 247 6.2 Optical Amplifier Model 247 6.3
Amplified Spontaneous Emission in Two-Level Systems 248 6.4 Low-Pass
Representation of ASE Noise 249 6.5 System Impact of ASE 251 6.5.1
Signal-ASE Beat Noise 253 6.5.2 ASE-ASE Beat Noise 256 6.5.3 Total Mean and
Variance 256 6.5.4 Polarization Effects 258 6.5.5 Amplifier Noise Figure
260 6.5.6 Optical Signal-to Noise Ratio 262 6.6 Semiconductor Optical
Amplifiers 263 6.6.1 Cavity-Type Semiconductor Optical Amplifiers 264 6.6.2
Traveling-Wave Amplifiers 268 6.6.3 AR Coating 270 6.6.4 Gain Saturation
271 6.7 Erbium-Doped Fiber Amplifier 274 6.7.1 Gain Spectrum 274 6.7.2 Rate
Equations* 275 6.7.3 Amplified Spontaneous Emission 280 6.7.4 Comparison of
EDFA and SOA 281 6.8 Raman Amplifiers 282 6.8.1 Governing Equations 283
6.8.2 Noise Figure 287 6.8.3 Rayleigh Back Scattering 287 6.9 Additional
Examples 288 Exercises 298 Further Reading 300 References 300 7
Transmission System Design 301 7.1 Introduction 301 7.2 Fiber Loss-Induced
Limitations 301 7.2.1 Balanced Coherent Receiver 306 7.3 Dispersion-Induced
Limitations 313 7.4 ASE-Induced Limitations 315 7.4.1 Equivalent Noise
Figure 317 7.4.2 Impact of Amplifier Spacing 318 7.4.3 Direct Detection
Receiver 319 7.4.4 Coherent Receiver 322 7.4.5 Numerical Experiments 326
7.5 Additional Examples 327 Exercises 333 Further Reading 334 References
334 8 Performance Analysis 335 8.1 Introduction 335 8.2 Optimum Binary
Receiver for Coherent Systems 335 8.2.1 Realization of the Matched Filter
342 8.2.2 Error Probability with an Arbitrary Receiver Filter 345 8.3
Homodyne Receivers 345 8.3.1 PSK: Homodyne Detection 347 8.3.2 On-Off
Keying 349 8.4 Heterodyne Receivers 350 8.4.1 PSK: Synchronous Detection
351 8.4.2 OOK: Synchronous Detection 353 8.4.3 FSK: Synchronous Detection
356 8.4.4 OOK: Asynchronous Receiver 359 8.4.5 FSK: Asynchronous Detection
364 8.4.6 Comparison of Modulation Schemes with Heterodyne Receiver 367 8.5
Direct Detection 368 8.5.1 OOK 368 8.5.2 FSK 371 8.5.3 DPSK 374 8.5.4
Comparison of Modulation Schemes with Direct Detection 379 8.6 Additional
Examples 381 Exercises 387 References 388 9 Channel Multiplexing Techniques
389 9.1 Introduction 389 9.2 Polarization-Division Multiplexing 389 9.3
Wavelength-Division Multiplexing 391 9.3.1 WDM Components 394 9.3.2 WDM
Experiments 401 9.4 OFDM 402 9.4.1 OFDM Principle 402 9.4.2 Optical OFDM
Transmitter 406 9.4.3 Optical OFDM Receiver 407 9.4.4 Optical OFDM
Experiments 408 9.5 Time-Division Multiplexing 409 9.5.1 Multiplexing 409
9.5.2 Demultiplexing 410 9.5.3 OTDM Experiments 412 9.6 Additional Examples
413 Exercises 415 References 416 10 Nonlinear Effects in Fibers 419 10.1
Introduction 419 10.2 Origin of Linear and Nonlinear Refractive Indices 419
10.2.1 Absorption and Amplification 423 10.2.2 Nonlinear Susceptibility 424
10.3 Fiber Dispersion 426 10.4 Nonlinear Schrödinger Equation 428 10.5
Self-Phase Modulation 430 10.6 Combined Effect of Dispersion and SPM 433
10.7 Interchannel Nonlinear Effects 437 10.7.1 Cross-Phase Modulation 438
10.7.2 Four-Wave Mixing 448 10.8 Intrachannel Nonlinear Impairments 454
10.8.1 Intrachannel Cross-Phase Modulation 454 10.8.2 Intrachannel
Four-Wave Mixing 455 10.8.3 Intra- versus Interchannel Nonlinear Effects
457 10.9 Theory of Intrachannel Nonlinear Effects 457 10.9.1 Variance
Calculations 463 10.9.2 Numerical Simulations 466 10.10 Nonlinear Phase
Noise 471 10.10.1 Linear Phase Noise 471 10.10.2 Gordon-Mollenauer Phase
Noise 474 10.11 Stimulated Raman Scattering 478 10.11.1 Time Domain
Description 481 10.12 Additional Examples 483 Exercises 491 Further Reading
493 References 493 11 Digital Signal Processing 497 11.1 Introduction 497
11.2 Coherent Receiver 497 11.3 Laser Phase Noise 498 11.4 IF Estimation
and Compensation 501 11.5 Phase Estimation and Compensation 503 11.5.1
Phase Unwrapping 505 11.6 CD Equalization 506 11.6.1 Adaptive Equalizers
510 11.7 Polarization Mode Dispersion Equalization 513 11.8 Digital Back
Propagation 516 11.8.1 Multi-Span DBP 521 11.9 Additional Examples 522
Exercises 524 Further Reading 525 References 525 AppendixA 527 Appendix B
533 Index 537
Preface xv Acknowledgments xvii 1 Electromagnetics and Optics 1 1.1
Introduction 1 1.2 Coulomb's Law and Electric Field Intensity 1 1.3
Ampere's Law and Magnetic Field Intensity 3 1.4 Faraday's Law 6 1.4.1
Meaning of Curl 7 1.4.2 Ampere's Law in Differential Form 9 1.5 Maxwell's
Equations 9 1.5.1 Maxwell's Equation in a Source-Free Region 10 1.5.2
Electromagnetic Wave 10 1.5.3 Free-Space Propagation 11 1.5.4 Propagation
in a Dielectric Medium 12 1.6 1-Dimensional Wave Equation 12 1.6.1
1-Dimensional Plane Wave 15 1.6.2 Complex Notation 16 1.7 Power Flow and
Poynting Vector 17 1.8 3-Dimensional Wave Equation 19 1.9 Reflection and
Refraction 21 1.9.1 Refraction 22 1.10 Phase Velocity and Group Velocity 26
1.11 Polarization of Light 31 Exercises 31 Further Reading 34 References 34
2 Optical Fiber Transmission 35 2.1 Introduction 35 2.2 Fiber Structure 35
2.3 Ray Propagation in Fibers 36 2.3.1 Numerical Aperture 37 2.3.2
Multi-Mode and Single-Mode Fibers 39 2.3.3 Dispersion in Multi-Mode Fibers
39 2.3.4 Graded-Index Multi-Mode Fibers 42 2.4 Modes of a Step-Index
Optical Fiber* 44 2.4.1 Guided Modes 46 2.4.2 Mode Cutoff 51 2.4.3
Effective Index 52 2.4.4 2-Dimensional Planar Waveguide Analogy 53 2.4.5
Radiation Modes 54 2.4.6 Excitation of Guided Modes 55 2.5 Pulse
Propagation in Single-Mode Fibers 57 2.5.1 Power and the dBm Unit 60 2.6
Comparison between Multi-Mode and Single-Mode Fibers 68 2.7 Single-Mode
Fiber Design Considerations 68 2.7.1 Cutoff Wavelength 68 2.7.2 Fiber Loss
69 2.7.3 Fiber Dispersion 74 2.7.4 Dispersion Slope 76 2.7.5 Polarization
Mode Dispersion 78 2.7.6 Spot Size 79 2.8 Dispersion-Compensating Fibers
(DCFs) 79 2.9 Additional Examples 81 Exercises 89 Further Reading 91
References 91 3 Lasers 93 3.1 Introduction 93 3.2 Basic Concepts 93 3.3
Conditions for Laser Oscillations 101 3.4 Laser Examples 108 3.4.1 Ruby
Laser 108 3.4.2 Semiconductor Lasers 108 3.5 Wave-Particle Duality 108 3.6
Laser Rate Equations 110 3.7 Review of Semiconductor Physics 113 3.7.1 The
PN Junctions 118 3.7.2 Spontaneous and Stimulated Emission at the PN
Junction 120 3.7.3 Direct and Indirect Band-Gap Semiconductors 120 3.8
Semiconductor Laser Diode 124 3.8.1 Heterojunction Lasers 124 3.8.2
Radiative and Non-Radiative Recombination 126 3.8.3 Laser Rate Equations
126 3.8.4 Steady-State Solutions of Rate Equations 128 3.8.5
Distributed-Feedback Lasers 132 3.9 Additional Examples 133 Exercises 136
Further Reading 138 References 138 4 Optical Modulators and Modulation
Schemes 139 4.1 Introduction 139 4.2 Line Coder 139 4.3 Pulse Shaping 139
4.4 Power Spectral Density 141 4.4.1 Polar Signals 142 4.4.2 Unipolar
Signals 142 4.5 Digital Modulation Schemes 144 4.5.1 Amplitude-Shift Keying
144 4.5.2 Phase-Shift Keying 144 4.5.3 Frequency-Shift Keying 145 4.5.4
Differential Phase-Shift Keying 146 4.6 Optical Modulators 149 4.6.1 Direct
Modulation 149 4.6.2 External Modulators 150 4.7 Optical Realization of
Modulation Schemes 158 4.7.1 Amplitude-Shift Keying 158 4.7.2 Phase-Shift
Keying 160 4.7.3 Differential Phase-Shift Keying 162 4.7.4 Frequency-Shift
Keying 163 4.8 Partial Response Signals* 163 4.8.1 Alternate Mark Inversion
169 4.9 Multi-Level Signaling* 172 4.9.1 M-ASK 172 4.9.2 M-PSK 174 4.9.3
Quadrature Amplitude Modulation 178 4.10 Additional Examples 182 Exercises
185 Further Reading 186 References 187 5 Optical Receivers 189 5.1
Introduction 189 5.2 Photodetector Performance Characteristics 190 5.2.1
Quantum Efficiency 193 5.2.2 Responsivity or Photoresponse 197 5.2.3
Photodetector Design Rules 199 5.2.4 Dark Current 200 5.2.5 Speed or
Response Time 201 5.2.6 Linearity 202 5.3 Common Types of Photodetectors
202 5.3.1 pn Photodiode 203 5.3.2 pin Photodetector (pin-PD) 203 5.3.3
Schottky Barrier Photodetector 204 5.3.4 Metal-Semiconductor-Metal
Photodetector 204 5.3.5 Photoconductive Detector 206 5.3.6 Phototransistor
206 5.3.7 Avalanche Photodetectors 207 5.3.8 Advanced Photodetectors* 212
5.4 Direct Detection Receivers 219 5.4.1 Optical Receiver ICs 220 5.5
Receiver Noise 224 5.5.1 Shot Noise 224 5.5.2 Thermal Noise 226 5.5.3
Signal-to-Noise Ratio, SNR 227 5.6 Coherent Receivers 227 5.6.1
Single-Branch Coherent Receiver 228 5.6.2 Balanced Coherent Receiver 232
5.6.3 Single-Branch IQ Coherent Receiver 234 5.6.4 Balanced IQ Receiver 237
5.6.5 Polarization Effects 239 Exercises 242 References 244 6 Optical
Amplifiers 247 6.1 Introduction 247 6.2 Optical Amplifier Model 247 6.3
Amplified Spontaneous Emission in Two-Level Systems 248 6.4 Low-Pass
Representation of ASE Noise 249 6.5 System Impact of ASE 251 6.5.1
Signal-ASE Beat Noise 253 6.5.2 ASE-ASE Beat Noise 256 6.5.3 Total Mean and
Variance 256 6.5.4 Polarization Effects 258 6.5.5 Amplifier Noise Figure
260 6.5.6 Optical Signal-to Noise Ratio 262 6.6 Semiconductor Optical
Amplifiers 263 6.6.1 Cavity-Type Semiconductor Optical Amplifiers 264 6.6.2
Traveling-Wave Amplifiers 268 6.6.3 AR Coating 270 6.6.4 Gain Saturation
271 6.7 Erbium-Doped Fiber Amplifier 274 6.7.1 Gain Spectrum 274 6.7.2 Rate
Equations* 275 6.7.3 Amplified Spontaneous Emission 280 6.7.4 Comparison of
EDFA and SOA 281 6.8 Raman Amplifiers 282 6.8.1 Governing Equations 283
6.8.2 Noise Figure 287 6.8.3 Rayleigh Back Scattering 287 6.9 Additional
Examples 288 Exercises 298 Further Reading 300 References 300 7
Transmission System Design 301 7.1 Introduction 301 7.2 Fiber Loss-Induced
Limitations 301 7.2.1 Balanced Coherent Receiver 306 7.3 Dispersion-Induced
Limitations 313 7.4 ASE-Induced Limitations 315 7.4.1 Equivalent Noise
Figure 317 7.4.2 Impact of Amplifier Spacing 318 7.4.3 Direct Detection
Receiver 319 7.4.4 Coherent Receiver 322 7.4.5 Numerical Experiments 326
7.5 Additional Examples 327 Exercises 333 Further Reading 334 References
334 8 Performance Analysis 335 8.1 Introduction 335 8.2 Optimum Binary
Receiver for Coherent Systems 335 8.2.1 Realization of the Matched Filter
342 8.2.2 Error Probability with an Arbitrary Receiver Filter 345 8.3
Homodyne Receivers 345 8.3.1 PSK: Homodyne Detection 347 8.3.2 On-Off
Keying 349 8.4 Heterodyne Receivers 350 8.4.1 PSK: Synchronous Detection
351 8.4.2 OOK: Synchronous Detection 353 8.4.3 FSK: Synchronous Detection
356 8.4.4 OOK: Asynchronous Receiver 359 8.4.5 FSK: Asynchronous Detection
364 8.4.6 Comparison of Modulation Schemes with Heterodyne Receiver 367 8.5
Direct Detection 368 8.5.1 OOK 368 8.5.2 FSK 371 8.5.3 DPSK 374 8.5.4
Comparison of Modulation Schemes with Direct Detection 379 8.6 Additional
Examples 381 Exercises 387 References 388 9 Channel Multiplexing Techniques
389 9.1 Introduction 389 9.2 Polarization-Division Multiplexing 389 9.3
Wavelength-Division Multiplexing 391 9.3.1 WDM Components 394 9.3.2 WDM
Experiments 401 9.4 OFDM 402 9.4.1 OFDM Principle 402 9.4.2 Optical OFDM
Transmitter 406 9.4.3 Optical OFDM Receiver 407 9.4.4 Optical OFDM
Experiments 408 9.5 Time-Division Multiplexing 409 9.5.1 Multiplexing 409
9.5.2 Demultiplexing 410 9.5.3 OTDM Experiments 412 9.6 Additional Examples
413 Exercises 415 References 416 10 Nonlinear Effects in Fibers 419 10.1
Introduction 419 10.2 Origin of Linear and Nonlinear Refractive Indices 419
10.2.1 Absorption and Amplification 423 10.2.2 Nonlinear Susceptibility 424
10.3 Fiber Dispersion 426 10.4 Nonlinear Schrödinger Equation 428 10.5
Self-Phase Modulation 430 10.6 Combined Effect of Dispersion and SPM 433
10.7 Interchannel Nonlinear Effects 437 10.7.1 Cross-Phase Modulation 438
10.7.2 Four-Wave Mixing 448 10.8 Intrachannel Nonlinear Impairments 454
10.8.1 Intrachannel Cross-Phase Modulation 454 10.8.2 Intrachannel
Four-Wave Mixing 455 10.8.3 Intra- versus Interchannel Nonlinear Effects
457 10.9 Theory of Intrachannel Nonlinear Effects 457 10.9.1 Variance
Calculations 463 10.9.2 Numerical Simulations 466 10.10 Nonlinear Phase
Noise 471 10.10.1 Linear Phase Noise 471 10.10.2 Gordon-Mollenauer Phase
Noise 474 10.11 Stimulated Raman Scattering 478 10.11.1 Time Domain
Description 481 10.12 Additional Examples 483 Exercises 491 Further Reading
493 References 493 11 Digital Signal Processing 497 11.1 Introduction 497
11.2 Coherent Receiver 497 11.3 Laser Phase Noise 498 11.4 IF Estimation
and Compensation 501 11.5 Phase Estimation and Compensation 503 11.5.1
Phase Unwrapping 505 11.6 CD Equalization 506 11.6.1 Adaptive Equalizers
510 11.7 Polarization Mode Dispersion Equalization 513 11.8 Digital Back
Propagation 516 11.8.1 Multi-Span DBP 521 11.9 Additional Examples 522
Exercises 524 Further Reading 525 References 525 AppendixA 527 Appendix B
533 Index 537
Introduction 1 1.2 Coulomb's Law and Electric Field Intensity 1 1.3
Ampere's Law and Magnetic Field Intensity 3 1.4 Faraday's Law 6 1.4.1
Meaning of Curl 7 1.4.2 Ampere's Law in Differential Form 9 1.5 Maxwell's
Equations 9 1.5.1 Maxwell's Equation in a Source-Free Region 10 1.5.2
Electromagnetic Wave 10 1.5.3 Free-Space Propagation 11 1.5.4 Propagation
in a Dielectric Medium 12 1.6 1-Dimensional Wave Equation 12 1.6.1
1-Dimensional Plane Wave 15 1.6.2 Complex Notation 16 1.7 Power Flow and
Poynting Vector 17 1.8 3-Dimensional Wave Equation 19 1.9 Reflection and
Refraction 21 1.9.1 Refraction 22 1.10 Phase Velocity and Group Velocity 26
1.11 Polarization of Light 31 Exercises 31 Further Reading 34 References 34
2 Optical Fiber Transmission 35 2.1 Introduction 35 2.2 Fiber Structure 35
2.3 Ray Propagation in Fibers 36 2.3.1 Numerical Aperture 37 2.3.2
Multi-Mode and Single-Mode Fibers 39 2.3.3 Dispersion in Multi-Mode Fibers
39 2.3.4 Graded-Index Multi-Mode Fibers 42 2.4 Modes of a Step-Index
Optical Fiber* 44 2.4.1 Guided Modes 46 2.4.2 Mode Cutoff 51 2.4.3
Effective Index 52 2.4.4 2-Dimensional Planar Waveguide Analogy 53 2.4.5
Radiation Modes 54 2.4.6 Excitation of Guided Modes 55 2.5 Pulse
Propagation in Single-Mode Fibers 57 2.5.1 Power and the dBm Unit 60 2.6
Comparison between Multi-Mode and Single-Mode Fibers 68 2.7 Single-Mode
Fiber Design Considerations 68 2.7.1 Cutoff Wavelength 68 2.7.2 Fiber Loss
69 2.7.3 Fiber Dispersion 74 2.7.4 Dispersion Slope 76 2.7.5 Polarization
Mode Dispersion 78 2.7.6 Spot Size 79 2.8 Dispersion-Compensating Fibers
(DCFs) 79 2.9 Additional Examples 81 Exercises 89 Further Reading 91
References 91 3 Lasers 93 3.1 Introduction 93 3.2 Basic Concepts 93 3.3
Conditions for Laser Oscillations 101 3.4 Laser Examples 108 3.4.1 Ruby
Laser 108 3.4.2 Semiconductor Lasers 108 3.5 Wave-Particle Duality 108 3.6
Laser Rate Equations 110 3.7 Review of Semiconductor Physics 113 3.7.1 The
PN Junctions 118 3.7.2 Spontaneous and Stimulated Emission at the PN
Junction 120 3.7.3 Direct and Indirect Band-Gap Semiconductors 120 3.8
Semiconductor Laser Diode 124 3.8.1 Heterojunction Lasers 124 3.8.2
Radiative and Non-Radiative Recombination 126 3.8.3 Laser Rate Equations
126 3.8.4 Steady-State Solutions of Rate Equations 128 3.8.5
Distributed-Feedback Lasers 132 3.9 Additional Examples 133 Exercises 136
Further Reading 138 References 138 4 Optical Modulators and Modulation
Schemes 139 4.1 Introduction 139 4.2 Line Coder 139 4.3 Pulse Shaping 139
4.4 Power Spectral Density 141 4.4.1 Polar Signals 142 4.4.2 Unipolar
Signals 142 4.5 Digital Modulation Schemes 144 4.5.1 Amplitude-Shift Keying
144 4.5.2 Phase-Shift Keying 144 4.5.3 Frequency-Shift Keying 145 4.5.4
Differential Phase-Shift Keying 146 4.6 Optical Modulators 149 4.6.1 Direct
Modulation 149 4.6.2 External Modulators 150 4.7 Optical Realization of
Modulation Schemes 158 4.7.1 Amplitude-Shift Keying 158 4.7.2 Phase-Shift
Keying 160 4.7.3 Differential Phase-Shift Keying 162 4.7.4 Frequency-Shift
Keying 163 4.8 Partial Response Signals* 163 4.8.1 Alternate Mark Inversion
169 4.9 Multi-Level Signaling* 172 4.9.1 M-ASK 172 4.9.2 M-PSK 174 4.9.3
Quadrature Amplitude Modulation 178 4.10 Additional Examples 182 Exercises
185 Further Reading 186 References 187 5 Optical Receivers 189 5.1
Introduction 189 5.2 Photodetector Performance Characteristics 190 5.2.1
Quantum Efficiency 193 5.2.2 Responsivity or Photoresponse 197 5.2.3
Photodetector Design Rules 199 5.2.4 Dark Current 200 5.2.5 Speed or
Response Time 201 5.2.6 Linearity 202 5.3 Common Types of Photodetectors
202 5.3.1 pn Photodiode 203 5.3.2 pin Photodetector (pin-PD) 203 5.3.3
Schottky Barrier Photodetector 204 5.3.4 Metal-Semiconductor-Metal
Photodetector 204 5.3.5 Photoconductive Detector 206 5.3.6 Phototransistor
206 5.3.7 Avalanche Photodetectors 207 5.3.8 Advanced Photodetectors* 212
5.4 Direct Detection Receivers 219 5.4.1 Optical Receiver ICs 220 5.5
Receiver Noise 224 5.5.1 Shot Noise 224 5.5.2 Thermal Noise 226 5.5.3
Signal-to-Noise Ratio, SNR 227 5.6 Coherent Receivers 227 5.6.1
Single-Branch Coherent Receiver 228 5.6.2 Balanced Coherent Receiver 232
5.6.3 Single-Branch IQ Coherent Receiver 234 5.6.4 Balanced IQ Receiver 237
5.6.5 Polarization Effects 239 Exercises 242 References 244 6 Optical
Amplifiers 247 6.1 Introduction 247 6.2 Optical Amplifier Model 247 6.3
Amplified Spontaneous Emission in Two-Level Systems 248 6.4 Low-Pass
Representation of ASE Noise 249 6.5 System Impact of ASE 251 6.5.1
Signal-ASE Beat Noise 253 6.5.2 ASE-ASE Beat Noise 256 6.5.3 Total Mean and
Variance 256 6.5.4 Polarization Effects 258 6.5.5 Amplifier Noise Figure
260 6.5.6 Optical Signal-to Noise Ratio 262 6.6 Semiconductor Optical
Amplifiers 263 6.6.1 Cavity-Type Semiconductor Optical Amplifiers 264 6.6.2
Traveling-Wave Amplifiers 268 6.6.3 AR Coating 270 6.6.4 Gain Saturation
271 6.7 Erbium-Doped Fiber Amplifier 274 6.7.1 Gain Spectrum 274 6.7.2 Rate
Equations* 275 6.7.3 Amplified Spontaneous Emission 280 6.7.4 Comparison of
EDFA and SOA 281 6.8 Raman Amplifiers 282 6.8.1 Governing Equations 283
6.8.2 Noise Figure 287 6.8.3 Rayleigh Back Scattering 287 6.9 Additional
Examples 288 Exercises 298 Further Reading 300 References 300 7
Transmission System Design 301 7.1 Introduction 301 7.2 Fiber Loss-Induced
Limitations 301 7.2.1 Balanced Coherent Receiver 306 7.3 Dispersion-Induced
Limitations 313 7.4 ASE-Induced Limitations 315 7.4.1 Equivalent Noise
Figure 317 7.4.2 Impact of Amplifier Spacing 318 7.4.3 Direct Detection
Receiver 319 7.4.4 Coherent Receiver 322 7.4.5 Numerical Experiments 326
7.5 Additional Examples 327 Exercises 333 Further Reading 334 References
334 8 Performance Analysis 335 8.1 Introduction 335 8.2 Optimum Binary
Receiver for Coherent Systems 335 8.2.1 Realization of the Matched Filter
342 8.2.2 Error Probability with an Arbitrary Receiver Filter 345 8.3
Homodyne Receivers 345 8.3.1 PSK: Homodyne Detection 347 8.3.2 On-Off
Keying 349 8.4 Heterodyne Receivers 350 8.4.1 PSK: Synchronous Detection
351 8.4.2 OOK: Synchronous Detection 353 8.4.3 FSK: Synchronous Detection
356 8.4.4 OOK: Asynchronous Receiver 359 8.4.5 FSK: Asynchronous Detection
364 8.4.6 Comparison of Modulation Schemes with Heterodyne Receiver 367 8.5
Direct Detection 368 8.5.1 OOK 368 8.5.2 FSK 371 8.5.3 DPSK 374 8.5.4
Comparison of Modulation Schemes with Direct Detection 379 8.6 Additional
Examples 381 Exercises 387 References 388 9 Channel Multiplexing Techniques
389 9.1 Introduction 389 9.2 Polarization-Division Multiplexing 389 9.3
Wavelength-Division Multiplexing 391 9.3.1 WDM Components 394 9.3.2 WDM
Experiments 401 9.4 OFDM 402 9.4.1 OFDM Principle 402 9.4.2 Optical OFDM
Transmitter 406 9.4.3 Optical OFDM Receiver 407 9.4.4 Optical OFDM
Experiments 408 9.5 Time-Division Multiplexing 409 9.5.1 Multiplexing 409
9.5.2 Demultiplexing 410 9.5.3 OTDM Experiments 412 9.6 Additional Examples
413 Exercises 415 References 416 10 Nonlinear Effects in Fibers 419 10.1
Introduction 419 10.2 Origin of Linear and Nonlinear Refractive Indices 419
10.2.1 Absorption and Amplification 423 10.2.2 Nonlinear Susceptibility 424
10.3 Fiber Dispersion 426 10.4 Nonlinear Schrödinger Equation 428 10.5
Self-Phase Modulation 430 10.6 Combined Effect of Dispersion and SPM 433
10.7 Interchannel Nonlinear Effects 437 10.7.1 Cross-Phase Modulation 438
10.7.2 Four-Wave Mixing 448 10.8 Intrachannel Nonlinear Impairments 454
10.8.1 Intrachannel Cross-Phase Modulation 454 10.8.2 Intrachannel
Four-Wave Mixing 455 10.8.3 Intra- versus Interchannel Nonlinear Effects
457 10.9 Theory of Intrachannel Nonlinear Effects 457 10.9.1 Variance
Calculations 463 10.9.2 Numerical Simulations 466 10.10 Nonlinear Phase
Noise 471 10.10.1 Linear Phase Noise 471 10.10.2 Gordon-Mollenauer Phase
Noise 474 10.11 Stimulated Raman Scattering 478 10.11.1 Time Domain
Description 481 10.12 Additional Examples 483 Exercises 491 Further Reading
493 References 493 11 Digital Signal Processing 497 11.1 Introduction 497
11.2 Coherent Receiver 497 11.3 Laser Phase Noise 498 11.4 IF Estimation
and Compensation 501 11.5 Phase Estimation and Compensation 503 11.5.1
Phase Unwrapping 505 11.6 CD Equalization 506 11.6.1 Adaptive Equalizers
510 11.7 Polarization Mode Dispersion Equalization 513 11.8 Digital Back
Propagation 516 11.8.1 Multi-Span DBP 521 11.9 Additional Examples 522
Exercises 524 Further Reading 525 References 525 AppendixA 527 Appendix B
533 Index 537
"The detailed, worked examples and first-principles derivations of key results are helpful pedagogical features. Students seeking their first exposure to this field who also wish to learn about advanced topics will find their requirements met by this book." (Optics and Photonics News, 28 August 2014)