A wideband heterodyne optical phase-locked loop for generation of 3-18 GHz microwave carriers

Ulrik Bo Gliese, Torben Nørskov Nielsen, Marlene Bruun, Erik Lintz Christensen, Kristian Stubkjær, S. Lindgren, B. Broberg

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Abstract

Experimental results of a wideband heterodyne second-order optical phase-locked loop with 1.5-μm semiconductor lasers are presented. The loop has a bandwidth of 180 MHz, a gain of 181 dBHz, and a propagation delay of only 400 ps. A beat signal of 8 MHz linewidth is phase locked to become a replica of a microwave reference source close to carrier with a noise level of -125 dBc/Hz. The total phase variance of the locked carrier is 0.04 rad2 and carriers can be generated in a continuous range from 3 to 18 GHz. The loop reliability is excellent with an average time to cycle slip of 1011 s and an acquisition range of 640 MHz
Original languageEnglish
JournalI E E E Photonics Technology Letters
Volume4
Issue number8
Pages (from-to)936-938
ISSN1041-1135
DOIs
Publication statusPublished - 1992

Bibliographical note

Copyright: 1992 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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