Advanced Digital Optical Communications, 2nd Edition

9

Frequency Discrimination Reception for Optical Minimum Shift Keying

9.1 Introduction

Improving the fiber dispersion limit has become an unavoidable challenge for future high-performance and high-capacity dense wavelength division multiplexed (DWDM) long-haul and metropolitan optical systems. The last few years have experienced a fast-growing demand to considerably extend the reach of uncompensated optical links, especially for metropolitan optical networks where the transmission distance is approximately in the range of 300–500 km of standard single-mode fiber (SSMF).

As presented in previous chapters, advanced modulation formats with narrow spectrum and high dispersion tolerance limits have recently attracted extensive research effort. ...