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Proceedings Paper

Dynamitic cascaded FBG based filter used in DWDM networks
Author(s): Weiping Liu; Shixiang Lin; Cunlei Cui; Jinglun Shi; Liming Zheng; Hongbin Huang; W. Du
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Paper Abstract

The characteristics of uniform fiber Bragg gratings (FBGs) is analyzed. The reflected spectra in apodized uniformly periodic FBGs are calculated and the double exposure technique is used in suppressing the sidelobes of uniform gratings. After that, the corresponding FBGs filters used in DWDM networks and systems are imprinted. Based on the apodized FBGs, a cascaded FBGs filter module is proposed, in which two, or more, pieces of identical FBGs, with the same central wavelength, same bandwidth and same reflectivity, are spliced in series and each FBG is equipped with tuning device. By controlling the tuning device, the module can act either as a tunable single channel filter with its central wavelength and/or bandwidth being tunable, or as a double channel filter with its central wavelength being tunable. The tested results demonstrated that the module can dynamically tuned in the range of several nanometers.

Paper Details

Date Published: 6 December 2005
PDF: 6 pages
Proc. SPIE 6019, Passive Components and Fiber-based Devices II, 60190U (6 December 2005); doi: 10.1117/12.635869
Show Author Affiliations
Weiping Liu, Jinan Univ. (China)
Shixiang Lin, Jinan Univ. (China)
Cunlei Cui, Jinan Univ. (China)
Jinglun Shi, Jinan Univ. (China)
Liming Zheng, Jinan Univ. (China)
Hongbin Huang, Jinan Univ. (China)
W. Du, Zhongshan Xinnuo Keji, Co. (China)


Published in SPIE Proceedings Vol. 6019:
Passive Components and Fiber-based Devices II
Yan Sun; Jianping Chen; Sang Bae Lee; Ian H. White, Editor(s)

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