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Proceedings Paper

Tunable Fabry-Perot filter based on hollow-core photonic bandgap fiber and micro-fiber and its application
Author(s): Xiaozhen Wang; Tao Zhu; Liang Chen; Xiaoyi Bao
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Paper Abstract

A novel tunable Fabry-Perot (F-P) filter is reported in this paper. The interference cavity is the hollow core of hollowcore photonic bandgap fiber (HC-PBF), which supports fewer modes than the conventional cavities. One of the reflection mirrors is the splicing point between a section of HC-PBF and a single mode fiber. The other one is a cleaved end of a section of micro-fiber, which is inserted into the hollow core of HC-PBF. The cavity length of the F-P device can be tuned by adjusting the position of the micro-fiber in the hollow core. Because of the low loss of HC-PBF, the F-P cavity length can reach several millimeters, even up to the order of centimeters, which results in its very narrow linewidth and high multiplexing capability. The experimental results show that the F-P filter has a fringe contrast of over 4 dB over a wide wavelength range, which can be used as the tunable filter in a fiber laser to obtain a very narrow linewidth.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77530E (17 May 2011); doi: 10.1117/12.886519
Show Author Affiliations
Xiaozhen Wang, Univ. of Ottawa (Canada)
Tao Zhu, Univ. of Ottawa (Canada)
Chongqing Univ. (China)
Liang Chen, Univ. of Ottawa (Canada)
Xiaoyi Bao, Univ. of Ottawa (Canada)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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