Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/69825
Type: Artigo de periódico
Title: High-performance phase locking of wide linewidth semiconductor lasers by combined use of optical injection locking and optical phase-lock loop
Author: Bordonalli, AC
Walton, C
Seeds, AJ
Abstract: The requirement for narrow linewidth lasers or short-loop propagation delay makes the realization of optical phase-lock loops using semiconductor lasers difficult. Although optical injection locking can provide low phase error variance for wide linewidth lasers, the locking range is restricted by stability considerations. Theoretical and experimental results for a system which combines both techniques so as to overcome these limitations, the optical injection phase-lock loop (OIPLL), are reported. Phase error variance values as low as 0.006 rad(2) (500 MHz bandwidth) and locking ranges exceeding 26 GHz were achieved in homodyne OIPLL systems using DFB lasers of summed linewidth 36 MHz, loop propagation delay of 15 ns and injection ratio less than -30 dB, Phase error variance values as low as 0.003 rad(2) in a bandwidth of 100 MHz, a mean time to cycle slip of 3 x 10(10) s and SSB noise density of -94 dBc/Hz at 10 kHz offset mere obtained for the same lasers in an heterodyne OIPLL configuration with loop propagation delay of 20 ns and injection ratio of -30 dB.
Subject: injection locking
line-width
microwave optoelectronics
optical communication
optical phase-lock loop
semiconductor laser
Country: EUA
Editor: Ieee-inst Electrical Electronics Engineers Inc
Rights: aberto
Identifier DOI: 10.1109/50.744252
Date Issue: 1999
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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