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Highly integrated optical heterodyne phase-locked loop with phase/frequency detection

A highly-integrated optical phase-locked loop with a phase/frequency detector and a single-sideband mixer (SSBM) has been proposed and demonstrated for the first time. A photonic integrated circuit (PIC) has been designed, fabricated and tested, together with an electronic IC (EIC). The PIC integrat...

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Bibliographic Details
Published in:Optics express 2012-04, Vol.20 (9), p.9736-9741
Main Authors: Lu, Mingzhi, Park, Hyunchul, Bloch, Eli, Sivananthan, Abirami, Bhardwaj, Ashish, Griffith, Zach, Johansson, Leif A, Rodwell, Mark J, Coldren, Larry A
Format: Article
Language:English
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Summary:A highly-integrated optical phase-locked loop with a phase/frequency detector and a single-sideband mixer (SSBM) has been proposed and demonstrated for the first time. A photonic integrated circuit (PIC) has been designed, fabricated and tested, together with an electronic IC (EIC). The PIC integrates a widely-tunable sampled-grating distributed-Bragg-reflector laser, an optical 90 degree hybrid and four high-speed photodetectors on the InGaAsP/InP platform. The EIC adds a single-sideband mixer, and a digital phase/frequency detector, to provide single-sideband heterodyne locking from -9 GHz to 7.5 GHz. The loop bandwith is 400 MHz.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.20.009736