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Proceedings Paper

Analysis of microwave frequency combs generated by semiconductor lasers under hybrid optical injections
Author(s): Cheng-Ting Lin; Yi-Hua Wu; Yu-Shan Juan
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Paper Abstract

Microwave frequency combs utilizing hybrid optical injections schemes by varying the operational parameters, injection strength, repetition frequency, and detuning frequency are demonstrated and characterized. The dynamical hybrid optical injections are realized by both optical pulse injection and optical cw injection to the slave laser simultaneously under the condition of zero detuning frequency between two injecting source lasers. For pure pulse injection case, the amplitude variation of ±27.3 dB in a 30 GHz range is obtained. By further applying the injection strength of the cw injection to the pulses injected semiconductor laser, the amplitude variation of ±3.3 dB in a 30 GHz range in microwave frequency combs are observed when operating the cw injection system in a stable locking state. In order to examine the microwave frequency comb precisely, each operational parameters of the hybrid optical injections schemes are analyzed. The amplitude variation of microwave frequency combs is also strongly influenced by operating the cw injection system in different states. Comparing to the cw injection system operated in period-one states, the amplitude variation is reduced when operated in the stable locking states. Moreover, the bandwidth broadening in microwave frequency comb is expected when the cw injection system operating in a stable locking state. In this paper, strongly improve the amplitude variation of the microwave frequency combs generated utilizing hybrid injections scheme compared to single injection case are obtained and compared.

Paper Details

Date Published: 16 March 2015
PDF: 6 pages
Proc. SPIE 9357, Physics and Simulation of Optoelectronic Devices XXIII, 93571N (16 March 2015); doi: 10.1117/12.2078864
Show Author Affiliations
Cheng-Ting Lin, Yuan Ze Univ. (Taiwan)
Yi-Hua Wu, Yuan Ze Univ. (Taiwan)
Yu-Shan Juan, Yuan Ze Univ. (Taiwan)

Published in SPIE Proceedings Vol. 9357:
Physics and Simulation of Optoelectronic Devices XXIII
Bernd Witzigmann; Marek Osiński; Fritz Henneberger; Yasuhiko Arakawa, Editor(s)

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