Paper
17 December 1992 Optical equalization of polarization dispersion
Jack H. Winters, Zygmunt Haas, Mario A. Santoro, Alan H. Gnauck
Author Affiliations +
Abstract
In this paper, we describe a demonstration of the optical equalization of polarization dispersion in direct-detection lightwave systems. We use a polarization controller to adjust the polarization into a fiber to one of the principal states of polarization of the fiber, which eliminates first-order polarization dispersion. Results for a 2.5 Gbps, externally modulated system with a fiber with 120 ps rms of polarization dispersion, show that by using the equalizer we maintain a 10-9 BER, while without the technique the BER varies with time from 10-5 to 10-9. At 10 Gbps, the equalizer allows reliable bit detection even though the eye is closed without equalization, demonstrating an order of magnitude increase in the dispersion-limited B2L product, in agreement with our analytical and computer simulation results. We also describe a demonstration of the technique at the receiver, and show how to implement an adaptive polarization controller to continuously track the principal states using a gradient search algorithm. This technique provides bit-rate-independent equalization of first-order polarization dispersion.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jack H. Winters, Zygmunt Haas, Mario A. Santoro, and Alan H. Gnauck "Optical equalization of polarization dispersion", Proc. SPIE 1787, Multigigabit Fiber Communications, (17 December 1992); https://doi.org/10.1117/12.139326
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Cited by 16 scholarly publications.
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KEYWORDS
Polarization

Receivers

Signal detection

Eye

Distortion

Transmitters

Sensors

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