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Generation of optimized wavelength-tunable optical pulse from an uncooled gain-switched Fabry–Perot semiconductor laser using optical amplifier as external light injection

✍ Scribed by Yuanshan Liu; Jianguo Zhang; Wei Zhao

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
627 KB
Volume
281
Category
Article
ISSN
0030-4018

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✦ Synopsis

We present a novel system design that can generate the optimized wavelength-tunable optical pulse streams from an uncooled gain-switched Fabry-Perot semiconductor laser using an optical amplifier as external light source. The timing jitter of gain-switched laser has been reduced from about 3 ps to 600 fs and the pulse width has been optimized by using our system. The stability of the system was also experimentally investigated. Our results show that an uncooled gain-switched FP laser system can feasibly produce the stable optical pulse trains with pulse width of 18 ps at the repetition frequency of 5 GHz during 7 h continuous working. We respectively proved the system feasibility under 1 GHz, 2.5 GHz and 5 GHz operation.

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## Abstract This paper presents the design of a low‐timing‐jitter, stable picosecond optical‐pulse source, which is based on a low‐cost, uncooled Fabry–Perot (FP) semiconductor laser in the gain‐switching operation. The wavelength of the designed laser can be tuned from 1538 to 1554 nm under the co