Multichip Differential Phase-Shift-Keyed Transmission Over (Non)Linear Optical Channels

• Published in: Journal of lightwave technology Vol. 25; no. 6; pp. 1431 - 1440
• Main Authors: Yadin, Y., Nazarathy, M., Bilenca, A., Orenstein, M.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.06.2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Channels; Circuit properties; Computer simulation; Delay; Differential phase shift keying; Differential phase-shift keying (DPSK); Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Fiber nonlinear optics; Format; Information, signal and communications theory; Integrated optics. Optical fibers and wave guides; Interferometers; Mach-Zehnder interferometers; Modulation; Modulation, demodulation; Nonlinear optics; Optical and optoelectronic circuits; optical fiber communication; Optical fiber communications; Optical interferometry; Optical modulation; Optical receivers; Optical telecommunications; Phase modulation; phase noise; Receivers; Signal and communications theory; Spontaneous emission; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Phase noise; Performance evaluation; Integrated optics; Phase modulation; Q factor; Multichip module; Phase shift; Mach Zehnder interferometer; Non linear optics; Receiver; Non linear channel; Numerical method; Amplified spontaneous emission; Stokes parameter; Optical transmission; Self phase modulation; Optical fiber communication; Delay time; Maximum likelihood; Differential phase shift keying; Differential phase-shift keying (DPSK); Optical fiber
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/JLT.2007.893887

The recently introduced multichip differential phase-shift keying (MC-DPSK) optical transmission format, entailing the modulation of relative phases over a moving transmission window of successive chip intervals, is analytically and numerically analyzed. The maximum-likelihood optimal MC-DPSK receiver is derived and synthesized using integrated-optic Mach-Zehnder delay interferometers, whose electrical outputs are interpreted as generalized Stokes' parameters. The MC-DPSK performance over a nonlinear fiber channel, limited by the combination of amplified spontaneous emission noise and self-phase modulation, is further derived and simulated, demonstrating that the lowest complexity three-chip binary-phase MC-DPSK receiver provides an ~1-dB Q-factor advantage over conventional DPSK.