eprintid: 1569330 rev_number: 31 eprint_status: archive userid: 608 dir: disk0/01/56/93/30 datestamp: 2017-08-29 14:21:40 lastmod: 2021-11-12 23:54:44 status_changed: 2017-08-29 14:21:40 type: article metadata_visibility: show creators_name: Bałakier, K creators_name: Fice, MJ creators_name: Ponnampalam, L creators_name: Graham, CS creators_name: Wonfor, A creators_name: Seeds, AJ creators_name: Renaud, CC title: Foundry fabricated photonic integrated circuit optical phase lock loop ispublished: pub divisions: UCL divisions: B04 divisions: C05 divisions: F46 keywords: Photonic integrated circuits; Optoelectronics; Integrated optics devices; Heterodyne; Radio frequency photonics; Laser stabilization note: Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. abstract: This paper describes the first foundry-based InP photonic integrated circuit (PIC) designed to work within a heterodyne optical phase locked loop (OPLL). The PIC and an external electronic circuit were used to phase-lock a single-line semiconductor laser diode to an incoming reference laser, with tuneable frequency offset from 4 GHz to 12 GHz. The PIC contains 33 active and passive components monolithically integrated on a single chip, fully demonstrating the capability of a generic foundry PIC fabrication model. The electronic part of the OPLL consists of commercially available RF components. This semi-packaged system stabilizes the phase and frequency of the integrated laser so that an absolute frequency, high-purity heterodyne signal can be generated when the OPLL is in operation, with phase noise lower than −100 dBc/Hz at 10 kHz offset from the carrier. This is the lowest phase noise level ever demonstrated by monolithically integrated OPLLs. date: 2017-07-24 date_type: published official_url: http://doi.org/10.1364/OE.25.016888 oa_status: green full_text_type: pub language: eng primo: open primo_central: open_green article_type_text: Journal Article verified: verified_manual elements_id: 1410563 doi: 10.1364/OE.25.016888 lyricists_name: Balakier, Katarzyna lyricists_name: Fice, Martyn lyricists_name: Graham, Christopher lyricists_name: Ponnampalam, Lalitha lyricists_name: Renaud, Cyril lyricists_name: Seeds, Alwyn lyricists_id: KBALA48 lyricists_id: MFICE70 lyricists_id: CGRAH68 lyricists_id: LPONN12 lyricists_id: CRENA49 lyricists_id: AJSEE43 actors_name: Barczynska, Patrycja actors_id: PBARC91 actors_role: owner full_text_status: public publication: Optics Express volume: 25 number: 15 pagerange: 16888-16897 issn: 1094-4087 citation: Bałakier, K; Fice, MJ; Ponnampalam, L; Graham, CS; Wonfor, A; Seeds, AJ; Renaud, CC; (2017) Foundry fabricated photonic integrated circuit optical phase lock loop. Optics Express , 25 (15) pp. 16888-16897. 10.1364/OE.25.016888 <https://doi.org/10.1364/OE.25.016888>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/1569330/1/oe-25-15-16888.pdf