Fundamentals of Coherent Optical Fiber Communications
Tokyo University of Information Sciences · The University of Tokyo
Abstract
The recently developed digital coherent receiver enables us to employ a variety of spectrally efficient modulation formats such as M-ary phase-shift keying and quadrature-amplitude modulation. Moreover, in the digital domain, we can equalize all linear transmission impairments such as group-velocity dispersion and polarization-mode dispersion of transmission fibers, because coherent detection preserves the phase information of the optical signal. This paper reviews the history of research and development related to coherent optical communications and describes the principle of coherent detection, including its quantum-noise characteristics. In addition, it discusses the role of digital signal processing in…
Citation impact
- FWCI
- 24.90
- Percentile
- 100%
- References
- 77
Authors
1Topics & keywords
- Electronic engineering
- Quadrature amplitude modulation
- Polarization mode dispersion
- Analog transmission
- Computer science
- Optics
- Keying
- Transmission (telecommunications)