title: Highly integrated optical heterodyne phase-locked loop with phase/frequency detection.
abstract: 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.
authors.affiliation: ECE Department, University of California, Santa Barbara, California 93106, USA. mlu@ece.ucsb.edu
authors.forename: Mingzhi
authors.initials: M
authors.lastname: Lu
authors.forename: Hyunchul
authors.initials: H
authors.lastname: Park
authors.forename: Eli
authors.initials: E
authors.lastname: Bloch
authors.forename: Abirami
authors.initials: A
authors.lastname: Sivananthan
authors.forename: Ashish
authors.initials: A
authors.lastname: Bhardwaj
authors.forename: Zach
authors.initials: Z
authors.lastname: Griffith
authors.forename: Leif A
authors.initials: LA
authors.lastname: Johansson
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Rodwell
authors.forename: Larry A
authors.initials: LA
authors.lastname: Coldren
mesh_terms: D004581:Electronics / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D055095:Optics and Photonics / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D012666:Semiconductors; D013685:Telecommunications / Q000295:instrumentation*