Abstract

Advances in photonics, silicon electronics and digital signal processing (DSP) have converged to enable highly efficient transmission across fiber optic channels. Single wavelength data rates of 112 Gb/s are sought for wide deployment based on QPSK transmission, coherent detection, and digital demodulation. Here we examine continuous phase modulation (CPM) as a means to enhance performance and reach of coherent optical links. We quantify the robustness of the constant amplitude CPM format to spectral filtering and nonlinearities in comparison to QPSK. The challenges of generating and receiving the CPM waveform are considered and a novel CPM transmitter architecture is proposed.

© 2011 IEEE

Phase-modulated radio over fiber multimode links

Ivana Gasulla and José Capmany
Opt. Express 20(11) 11710-11717 (2012)

Advanced signaling technologies for high-speed digital fiber-optic links

Andrew J. Stark, Pierre Isautier, Jie Pan, Sriharsha Kota Pavan, Mark Filer, Sorin Tibuleac, Robert Lingle, Richard de Salvo, and Stephen E. Ralph
Appl. Opt. 53(25) 5824-5840 (2014)

Optical-wireless-optical full link for polarization multiplexing quadrature amplitude/phase modulation signal transmission

Xinying Li, Jianjun Yu, Nan Chi, and Junwen Zhang
Opt. Lett. 38(22) 4712-4715 (2013)

M-ary pulse-position modulation and frequency-shift keying with additional polarization/phase modulation for high-sensitivity optical transmission

Xiang Liu, S. Chandrasekhar, T. H. Wood, R. W. Tkach, P. J. Winzer, E. C. Burrows, and A. R. Chraplyvy
Opt. Express 19(26) B868-B881 (2011)

Optimized digital backward propagation for phase modulated signals in mixed-optical fiber transmission link

Rameez Asif, Chien-Yu Lin, M. Holtmannspoetter, and Bernhard Schmauss
Opt. Express 18(22) 22796-22807 (2010)