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Proceedings Paper

Fabrication of Bragg grating with reflectivity of 99.96% in B/Ge-codoped optical fiber with high-energy UV pulses
Author(s): Xinzhu Sang; Chongxiu Yu; Pak Lim Chu; Robost Lai
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Paper Abstract

Fabrication of a 2 cm long Bragg grating with reflectivity of 99.96 % in the B/Ge codoped fiber is demonstrated by phase mask method under high energy UV pulses. The growth characteristics of grating strength and Bragg wavelength shift are investigated. During UV irradiation, the evolution of the type I grating exhibited typically different stages: growth, saturation and decrease. With further UV exposure, the decrease of the type I grating was followed by the appearance of regenerated grating. But these phenomena were not observed under relatively low energy UV pulses. When the regenerated grating entered into saturation stage again, it became stable and had higher reflectivity and broader bandwidth than the type I grating.

Paper Details

Date Published: 10 January 2005
PDF: 8 pages
Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005); doi: 10.1117/12.574229
Show Author Affiliations
Xinzhu Sang, Beijing Univ. of Posts and Telecommunications (China)
City Univ. of Hong Kong (Hong Kong China)
Chongxiu Yu, Beijing Univ. of Posts and Telecommunications (China)
Pak Lim Chu, City Univ. of Hong Kong (Hong Kong China)
Robost Lai, City Univ. of Hong Kong (Hong Kong China)


Published in SPIE Proceedings Vol. 5623:
Passive Components and Fiber-based Devices
Yan Sun; Shuisheng Jian; Sang Bae Lee; Katsunari Okamoto, Editor(s)

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