Title :
A Fiber-Based All-Optical 3R Regenerator for DPSK Signals
Author :
Matsumoto, Masayuki
Author_Institution :
Graduate Sch. of Eng., Osaka Univ.
fDate :
3/1/2007 12:00:00 AM
Abstract :
Analysis of an all-optical 3R regenerator for differential phase-shift keying (DPSK) signals is presented. Incoming DPSK signals impaired by noise are first demodulated to on-off keying (OOK) signals by a delay interferometer. The amplitude of the OOK signals is then stabilized by a fiber-based all-optical 2R regenerator. In a subsequent nonlinear fiber, locally generated optical clock pulses are phase-modulated by the stabilized OOK pulses and are output as regenerated signals. It is shown that significant phase-noise suppression is achieved by strong amplitude regeneration
Keywords :
amplitude shift keying; demodulation; differential phase shift keying; light interferometry; nonlinear optics; optical fibre communication; optical fibres; optical repeaters; phase noise; DPSK signals; all-optical 3R regenerator; amplitude regeneration; delay interferometer; demodulation; differential phase-shift keying; fiber-based 3R regenerator; nonlinear fiber; on-off keying; optical clock pulses; phase modulation; phase-noise suppression; Delay; Differential phase shift keying; Differential quadrature phase shift keying; Optical fibers; Optical interferometry; Optical noise; Optical pulse generation; Phase shifting interferometry; Repeaters; Signal analysis; Fiber nonlinearity; optical fiber communication; signal regeneration;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.889102
