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Proceedings Paper

Reciprocity principle and nonequivalence of counterpropagating modes in whistle-geometry ring lasers
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Paper Abstract

Greatly enhanced high-speed modulation performance has been recently predicted in numerical calculations for a novel injection-locking scheme involving a distributed Bragg reflector master laser monolithically integrated with a unidirectional whistle-geometry semiconductor micro ring laser. In this work, we confirm the unidirectionality of the whistle-geometry configuration through rigorous three-dimensional finite-difference time-domain (FDTD) simulation by showing a strong asymmetry in photon lifetimes between the two counter propagating modes. At the same time, we explain why this result does not violate the Helmholtz reciprocity principle.

Paper Details

Date Published: 22 March 2016
PDF: 11 pages
Proc. SPIE 9742, Physics and Simulation of Optoelectronic Devices XXIV, 974213 (22 March 2016); doi: 10.1117/12.2214602
Show Author Affiliations
Hemashilpa Kalagara, The Univ. of New Mexico (United States)
Fei-Hung Chu, The Univ. of New Mexico (United States)
Gennady A. Smolyakov, The Univ. of New Mexico (United States)
Marek Osiński, The Univ. of New Mexico (United States)


Published in SPIE Proceedings Vol. 9742:
Physics and Simulation of Optoelectronic Devices XXIV
Bernd Witzigmann; Marek Osiński; Yasuhiko Arakawa, Editor(s)

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