Monolithically Integrated Photonic Heterodyne System

Author

Ponnampalam, Lalitha ; Fice, Martyn J. ; Pozzi, Francesca ; Renaud, Cyril C. ; Rogers, David C. ; Lealman, Ian F. ; Moodie, David G. ; Cannard, Paul J. ; Lynch, Colm ; Johnston, Lilianne ; Robertson, Michael J. ; Cronin, Richard ; Pavlovic, Leon ; Naglic,

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. Coll. London, London, UK

Volume

29

Issue

15

fYear

2011

Firstpage

2229

Lastpage

2234

Abstract

This paper presents the results from the first monolithically integrated photonic heterodyne system that allows the two optical sources to be mutually phase locked by locking to an external optical reference. High-spectral-purity signals of up to 50 GHz have been demonstrated from this first fabricated device, where the tuning range was limited by losses in the input waveguide. Successful phase locking was accomplished through short signal propagation delay of less than 2 ns achieved by monolithic integration and custom-made fast loop electronics. The approach can be extended to generate signals at >; 1 THz.

Keywords

integrated optics; light propagation; microwave photonics; optical losses; optical tuning; custom-made fast loop electronics; high-spectral-purity signals; monolithically integrated photonic heterodyne system; mutually locked phase; optical sources; optical tuning; phase locking; signal propagation delay; Delay; Distributed Bragg reflectors; Fiber lasers; Gratings; Laser tuning; Optical waveguides; Waveguide lasers; Millimeter-wave signal generation; THz signal generation; monolithic integration; optical phase-lock loop; photonic mixing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2011.2158186

Filename

5779689