Open AccessOn-chip optical phase locking of single growth monolithically integrated slotted fabry perot lasers
Author(s) -
Padraic E. Morrissey,
William Cotter,
David Goulding,
Bryan Kelleher,
S. Osborne,
Hua Yang,
James O’Callaghan,
B. Roycroft,
Brian Corbett,
Frank Peters
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.017315
Subject(s) - optics , laser , materials science , fabry–pérot interferometer , optoelectronics , attenuator (electronics) , semiconductor laser theory , chip , physics , telecommunications , computer science , attenuation
This work investigates the optical phase locking performance of Slotted Fabry Perot (SFP) lasers and develops an integrated variable phase locked system on chip for the first time to our knowledge using these lasers. Stable phase locking is demonstrated between two SFP lasers coupled on chip via a variable gain waveguide section. The two lasers are biased differently, one just above the threshold current of the device with the other at three times this value. The coupling between the lasers can be controlled using the variable gain section which can act as a variable optical attenuator or amplifier depending on bias. Using this, the width of the stable phase locking region on chip is shown to be variable.