Optical Technologies and Techniques for High-Bit-Rate Fiber Transmission

The last few years have witnessed rapid advances in optical technologies and techniques for high-speed fiber transmission that have resulted in record-setting capacity-distance products and highly flexible and transparent optical networking. In this paper, we review some of the new key enabling approaches used in optical terminals, repeaters, and link designs. In particular, we summarize advances in modulation formats and their corresponding transmitter and receiver designs, broadband Raman amplification, chromatic dispersion compensation, polarization- mode dispersion mitigation, and hybrid 10-Gb/s and 40-Gb/s dense wavelength-division-multiplexing (DWDM).