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Optical Engineering

Comparative study of Raman fiber laser in symmetrical and asymmetrical cavities
Author(s): Young-Eun Im; Kyungwon Chun; Hangeul Kim; Dong-Hwan Kim; Swook Hann; Youngjoo Chung; Chang-Soo Park
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Paper Abstract

We propose and demonstrate a novel technique to generate a stable multiwavelength Raman fiber laser (RFL) based on an asymmetrical all-fiber Raman laser cavity by using a wideband chirped fiber Bragg grating (CFBG). The wideband CFBG as an input reflector has a high reflectivity covering the spectral range from 1402 to 1463 nm. Output couplers are composed of three discrete fiber Bragg gratings (FBGs), which generate a multiwavelength laser with center wavelengths of 1415, 1430, and 1445 nm. The output power variations from detuning the center wavelengths of the in-out reflectors are compared experimentally and theoretically in symmetrical and asymmetrical cavities. It is shown that the RFL output with an asymmetric cavity is more stable than that of a symmetric cavity.

Paper Details

Date Published: 1 September 2010
PDF: 7 pages
Opt. Eng. 49(9) 091008 doi: 10.1117/1.3484948
Published in: Optical Engineering Volume 49, Issue 9
Show Author Affiliations
Young-Eun Im, Korea Photonics Technology Institute (Korea, Republic of)
Kyungwon Chun, Gwangju Institute of Science and Technology (Korea, Republic of)
Hangeul Kim, Korea Photonics Technology Institute (Korea, Republic of)
Dong-Hwan Kim, Doosan Defense and System, Research and Development Ctr. (Korea, Republic of)
Swook Hann, Korea Photonics Technology Institute (Korea, Republic of)
Youngjoo Chung, Gwangju Institute of Science and Technology (Korea, Republic of)
Chang-Soo Park, Gwangju Institute of Science and Technology (Korea, Republic of)


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