Paper
25 February 2008 Novel multiple-frequency Q-switched fiber laser by using chirped fiber Bragg grating Fabry-Perot etalon
X. P. Cheng, P. Shum, C. H. Tse, R. F. Wu, W. C. Tan
Author Affiliations +
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.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
X. P. Cheng, P. Shum, C. H. Tse, R. F. Wu, and W. C. Tan "Novel multiple-frequency Q-switched fiber laser by using chirped fiber Bragg grating Fabry-Perot etalon", Proc. SPIE 6873, Fiber Lasers V: Technology, Systems, and Applications, 68731S (25 February 2008); https://doi.org/10.1117/12.762435
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KEYWORDS
Fiber Bragg gratings

Fabry–Perot interferometers

Ferroelectric materials

Fiber lasers

Modulation

Q switched fiber lasers

Q switching

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