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Theory and Design of Terabit Optical Fiber Transmission Systems

Book Description

This comprehensive, modular treatment of the challenging issues involved in very high-speed optical transmission systems contains all the theory and practical design criteria required to optimise transmission system design. Each chapter covers the theoretical modelling of a given system; chapters are well supported by real-world worked examples and accompanied by MATLAB code and receiver design examples. Critical analysis and comparison of engineering solutions is presented, to make clear the principles underlying system performance optimisation, and a broad range of transmission systems is discussed, including the status and performance demands of the Terabit systems now entering the next generation market. Blending theoretical and practical considerations for high-speed fiber optic systems design, this is an indispensable reference for all forward-looking professionals and researchers in optical communications.

Table of Contents

  1. Coverpage
  2. Half title page
  3. Reviews
  4. Title page
  5. Copyright page
  6. Dedication
  7. Contents
  8. Preface
  9. Acknowledgments
  10. Part I Signals, spectra and optical modulations
    1. 1 Baseband signals and power spectra
      1. 1.1 Introduction
      2. 1.2 Differential encoding
      3. 1.3 Random sequences and power spectra
      4. 1.4 The power theorem of conjugated pulses
      5. 1.5 The raised cosine power spectrum
      6. 1.6 The raised cosine autocorrelator
      7. 1.7 Selected linear responses
      8. References
    2. 2 Analytic signals and spectral efficiency
      1. 2.1 Introduction
      2. 2.2 Signals and spectra
      3. 2.3 Causal functions and Hilbert transforms
      4. 2.4 SSB-ASK modulation
      5. 2.5 SSB-QPSK modulation
      6. References
    3. 3 Optical signals, high-order modulations and spectra
      1. 3.1 Introduction
      2. 3.2 The CW electromagnetic field
      3. 3.3 The modulated optical field
      4. 3.4 Amplitude modulation
      5. 3.5 Phase modulation
      6. 3.6 Overview of optical modulation
      7. References
  11. Part II Principles of light polarization and optical amplification
    1. 4 Principles of non-linear optics and light polarization
      1. 4.1 Introduction
      2. 4.2 The Maxwell equations
      3. 4.3 The dielectric polarization field
      4. 4.4 Physical medium assumption
      5. 4.5 Light polarization
      6. 4.6 Self-convolution theorem of a line spectrum
      7. 4.7 Basic concepts of polarization dynamics
      8. 4.8 The Poincaré sphere and Stokes parameters
      9. References
    2. 5 Principles of light amplification
      1. 5.1 Introduction
      2. 5.2 The optical amplification mechanism
      3. 5.3 Rate equations
      4. 5.4 The steady-state solution
      5. 5.5 The transient solution
      6. 5.6 Sine-integral test function
      7. 5.7 Second-order test function
      8. 5.8 Fourier transform method
      9. References
    3. 6 Spectral gain modeling of optical amplifiers
      1. 6.1 Introduction
      2. 6.2 The twofold optical representation
      3. 6.3 Optical gain model equations
      4. References
    4. 7 Noise theory of optical amplifiers
      1. 7.1 Introduction
      2. 7.2 The optical signal model
      3. 7.3 The optical noise model
      4. 7.4 The photocurrent equivalent
      5. 7.5 Optical beat-noise photocurrents
      6. 7.6 Signal–spontaneous beat noise
      7. 7.7 Spontaneous–spontaneous beat noise
      8. 7.8 Summary of beat-noise statistics
      9. References
  12. Part III Interferometric optical modulators
    1. 8 Theory of the single-mode optical coupler
      1. 8.1 Introduction
      2. 8.2 The four-port system
      3. 8.3 Coupled-mode theory
      4. 8.4 Gaussian model of compound modes
      5. 8.5 Coupled wave equations
      6. 8.6 Synchronous compound waveguide
      7. 8.7 Conservation of optical energy
      8. 8.8 Solution of the conditioning equations
      9. 8.9 Simulation of a Gaussian excitation
      10. 8.10 Conclusions
      11. References
    2. 9 Theory and applications of the Mach–Zehnder interferometer
      1. 9.1 Introduction
      2. 9.2 The MZI operating principle
      3. 9.3 The interferometer transfer matrix
      4. 9.4 The single-delay-line interferometer
      5. 9.5 The differential-delay interferometer
      6. 9.6 The linear optical phase modulator
      7. 9.7 The optical amplitude modulator
      8. 9.8 Applications
      9. References
    3. 10 Interferometric optical responses
      1. 10.1 Introduction
      2. 10.2 The optical coupler response
      3. 10.3 Composite half-power optical couplers
      4. 10.4 The Mach–Zehnder interferometer
      5. 10.5 Conclusions
    4. 11 Chirp theory of the Mach–Zehnder modulator
      1. 11.1 Introduction
      2. 11.2 The MZM model
      3. 11.3 Chirp coefficient at the bar (21) output
      4. 11.4 Chirp coefficient at the cross (22) output
      5. 11.5 Simulations
      6. 11.6 Equation summary
      7. 11.7 MATLAB® codes
    5. 12 Theory and modeling of the quadrature Mach–Zehnder modulator
      1. 12.1 Introduction
      2. 12.2 The single-quadrature optical modulator
      3. 12.3 Extinction ratio
      4. 12.4 Device modeling
      5. 12.5 Optical amplitude and intensity
      6. 12.6 Optical phase
      7. 12.7 Chirp theory
      8. 12.8 The compound-chirp model
      9. 12.9 Conclusions
  13. Part IV
    1. 13 Coherent system design for terabit transmission
      1. 13.1 Introduction
      2. 13.2 Challenges in optical communication
      3. 13.3 Principles of optical coherent detection
      4. 13.4 The optical 90° hybrid
      5. 13.5 Simulation of the SP-QPSK coherent receiver
      6. 13.6 Design of the DP-QPSK coherent receiver
      7. 13.7 Noise principles in coherent detection
      8. 13.8 Sensitivity analysis at large OSNR
      9. 13.9 Advanced optical system architectures
      10. References
  14. Appendix A Electromagnetic energy and power flow
  15. Appendix B Optical power and photon flux
  16. Index