CUED Publications database

Foundry fabricated photonic integrated circuit optical phase lock loop.

Bałakier, K and Fice, MJ and Ponnampalam, L and Graham, CS and Wonfor, A and Seeds, AJ and Renaud, CC (2017) Foundry fabricated photonic integrated circuit optical phase lock loop. Opt Express, 25. pp. 16888-16897.

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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.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 14 Nov 2017 01:52
Last Modified: 10 Apr 2021 00:46
DOI: 10.1364/OE.25.016888