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Proceedings Paper

Linearized broadband optical detector: study and implementation of optical phase-locked loop
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Paper Abstract

Optical phase-locked loop (OPLL) is used to improve the linearity of an optical link for transmission of analog signals. The finite loop delay and the presence of a low-pass filter, required for stable loop operation, lead to a nontrivial frequency response. Here, the linearity improvement in OPLL is investigated, and simple relation among the loop delay, the open-loop gain, and the loop-filter bandwidth that must be satisfied for stable operation of the OPLL is found. This relation is used to determine the fundamental limit on spur-free dynamic range (SFDR) improvement that OPLL can offer over a conventional Mach-Zehnder (MZ)-type detector.

Paper Details

Date Published: 1 February 2014
PDF: 6 pages
Proc. SPIE 9007, Broadband Access Communication Technologies VIII, 90070N (1 February 2014); doi: 10.1117/12.2036368
Show Author Affiliations
Janusz Murakowski, Univ. of Delaware (United States)
Garrett J. Schneider, Univ. of Delaware (United States)
Christopher A. Schuetz, Univ. of Delaware (United States)
Phase Sensitive Innovations, Inc. (United States)
Shouyuan Shi, Univ. of Delaware (United States)
Dennis W. Prather, Univ. of Delaware (United States)

Published in SPIE Proceedings Vol. 9007:
Broadband Access Communication Technologies VIII
Benjamin B. Dingel; Katsutoshi Tsukamoto, Editor(s)

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