Preface. Acknowledgement. Introduction/Why noises are important in optical communications. Noises and Fundamental Sensitivity Limit. ASK transmission systems. Phase Modulation Systems. QAM modulation Systems. OFDM optical Systems.

Optically amplified reception Systems. Raman amplification and noise processes. Phase noises and nonlinear noises. Compensation to combat noises. Quantum limits and receiver sensitivity. Noises in microwave photonic systems. Noises in photonic processing systems. Appendix 1: Techniques for electronic noise evaluations.

Appendix 2: Essential terms of noises. Appendix 3: Essential parameters of noises and optical transmission lines.