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Optical Engineering

Phase noise reduction of a semiconductor laser in a composite optical phase-locked loop
Author(s): Naresh Satyan; Jacob B. Sendowski; Arseny Vasilyev; George A. Rakuljic; Amnon Yariv
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Paper Abstract

The bandwidth and residual phase noise of optical phase-locked loops (OPLLs) using semiconductor lasers are typically constrained by the nonuniform frequency modulation response of the laser, limiting their usefulness in a number of applications. It is shown in this work that additional feedback control using an optical phase modulator improves the coherence between the master and slave lasers in the OPLL by achieving bandwidths determined only by the propagation delay in the loop. A phase noise reduction by more than a factor of two is demonstrated in a proof-of-concept experiment using a commercial distributed feedback semiconductor laser.

Paper Details

Date Published: 1 December 2010
PDF: 6 pages
Opt. Eng. 49(12) 124301 doi: 10.1117/1.3518077
Published in: Optical Engineering Volume 49, Issue 12
Show Author Affiliations
Naresh Satyan, California Institute of Technology (United States)
Jacob B. Sendowski, California Institute of Technology (United States)
Arseny Vasilyev, California Institute of Technology (United States)
George A. Rakuljic, Telaris, Inc. (United States)
Amnon Yariv, California Institute of Technology (United States)

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