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Proceedings Paper

Novel multiple-frequency Q-switched fiber laser by using chirped fiber Bragg grating Fabry-Perot etalon
Author(s): X. P. Cheng; P. Shum; C. H. Tse; R. F. Wu; W. C. Tan
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Paper Abstract

We propose a novel approach to increase the repetition rate of all-fiber Q-switched laser. This proposed ring cavity fiber laser consists of a fiber Bragg grating (FBG) functions as the wavelength discriminator and a chirped FBG Fabry-Perot (FP) etalon serve as the transmission filter inside the ring cavity. The Q-switching operation is achieved by periodically tuning of the FP etalon and hence modulating the loss of the cavity. A numerical model is developed to simulate this type fiber ring laser with consideration of FBGs' spectra. Our simulation shows that the repetition rate of the Q-switched pulse can be increased by multiple times that depend on the tuning range and the bandwidth of the chirped FBG FP etalon. Experimentally we achieved 14 kHz Q-switched pulses under 3.5 kHz PZT modulation frequency.

Paper Details

Date Published: 25 February 2008
PDF: 10 pages
Proc. SPIE 6873, Fiber Lasers V: Technology, Systems, and Applications, 68731S (25 February 2008); doi: 10.1117/12.762435
Show Author Affiliations
X. P. Cheng, Nanyang Technological Univ. (Singapore)
P. Shum, Nanyang Technological Univ. (Singapore)
C. H. Tse, Nanyang Technological Univ. (Singapore)
R. F. Wu, DSO National Labs. (Singapore)
W. C. Tan, Nanyang Technological Univ. (Singapore)


Published in SPIE Proceedings Vol. 6873:
Fiber Lasers V: Technology, Systems, and Applications
Jes Broeng; Clifford Headley, Editor(s)

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