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High-performance heterodyne optical injection phase-lock loop using wide linewidth semiconductor lasers

Walton, C; Bordonalli, AC; Seeds, AJ; (1998) High-performance heterodyne optical injection phase-lock loop using wide linewidth semiconductor lasers. IEEE PHOTONIC TECH L , 10 (3) 427 - 429.

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Abstract

The requirements for narrow linewidth lasers or short-loop propagation delay limit optical phase-lock loop realizability with semiconductor lasers, Although optical injection locking can provide low-phase-error variance, its locking range is limited by stability considerations, The first experimental results for an heterodyne optical injection phase-lock loop are reported, Phase-error variance as low as 0.003 rad(2) in a bandwidth of 100 MHz, single-sideband (SSB) noise density of -94 dBc/Hz at 10-kHz offset and mean time to cycle slip of 3 x 10(10) s have been achieved using DFB lasers of 36-MHz summed linewidth, a loop propagation delay of 20 ns and an injection ratio of -30 dB.

Type: Article
Title: High-performance heterodyne optical injection phase-lock loop using wide linewidth semiconductor lasers
Keywords: injection locking, linewidth, optical communication, optical phase-lock loop, semiconductor laser, GENERATION, DESIGN, DIODES
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: http://discovery.ucl.ac.uk/id/eprint/130561
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