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Free keywords:
PHASE NOISE; TRANSMISSION; MODULATION; SYSTEMSEngineering; Optics; Physics; all-optical regeneration; differential phase-shift keying (DPSK);
nonlinear optical loop mirror (NOLM);
Abstract:
We present a nonlinear optical loop mirror (NOLM)-based 2R-regenerator setup, which signals modulated in phase-sensitive modulation formats. In a conventional NOLM, fluctuations of the signal amplitude are converted into phase fluctuations. Therefore, it is not suitable for regeneration of signals, modulated in formats such as differential phase-shift keying (DPSK) or duobinary. In this letter, we present a modified NOLM setup for 2R-regeneration taking return-to-zero DPSK as an example.
