Receiver for PMD mitigation by polarization scrambling

Details Receiver for PMD mitigation by polarization scrambling Receiver for PMD mitigation by polarization scrambling

2005-12-08

2009-02-03

Vanderpuye, Kenneth N (Department: 2613)

Optical communications

Receiver

Including postcompensation

C398S155000, C398S154000, C398S205000, C398S065000, C398S152000

Reexamination Certificate

active

07486898

ABSTRACT:
A receiver (10) for an optical signal containing a time jitter and a time-varying distortion caused by a periodic polarization scrambled signal comprises at least one decision gate (11) and a clock recovery module (13) providing a clock signal (C) recovered from the optical signal to the at least one decision gate (11). The receiver (10) further comprises a scrambling frequency generator (16) synchronized to the scrambling frequency and phase of the polarization scrambled signal, a jitter function generator (17) generating a clock phase control signal (Δφb) reproducing the time jitter, and at least one clock phase modulator (14) modulating the phase of the clock signal (C) according to the clock phase control signal (Δφb).

REFERENCES:
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Zhihong Li; Jinyo Mo; Yi Dong; Yixin Wang; Chao Lu: “Experimental evaluation of the effect of polarization scrambling speed on the performance of PMD mitigation using FEC” Optical Fiber Communication Conference (OFC), Feb. 23, 2004, pp. 1-3, XP002329735, Washington DC, USA.
Moller L; Chandrasekhar S; Sinsky J H; Buhl L L: “Novel RZ receivers with enhanced jitter and PMD tolerance” Optical Fiber Communications Conference (OFC), vol. 2, 2002, pp. 1-4, XP002329736, Washington DC, USA.
Haustein H F; Schlenk R; Kallert H M; Pauli V A: “BER measurements of a 40Gb/s receiver with adaptive threshold using polarization scrambling” 2003 Digest of the Leos Summer Topics Meeting, Jul. 16, 2003, pp. 17-18, XP002329737 Vancouver, BC, Canada.
X. Liu, et al.: “Experiamental Demonstration of Broadband PMD Mitigation through Distributed Fast Polarization Scrambling and FEC”, pp. 1-2, ECOC 2004.

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