Fabrication of Bragg grating with reflectivity of 99.96% in B/Ge-codoped optical fiber with high-energy UV pulses

Xinzhu Sang; Chongxiu Yu; Pak Lim Chu; Robost Lai

doi:10.1117/12.574229

10 January 2005 Fabrication of Bragg grating with reflectivity of 99.96% in B/Ge-codoped optical fiber with high-energy UV pulses

Xinzhu Sang, Chongxiu Yu, Pak Lim Chu, Robost Lai

Author Affiliations +

Proceedings Volume 5623, Passive Components and Fiber-based Devices; (2005) https://doi.org/10.1117/12.574229
Event: Asia-Pacific Optical Communications, 2004, Beijing, China

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.

Citation Download Citation

Xinzhu Sang, Chongxiu Yu, Pak Lim Chu, and Robost Lai "Fabrication of Bragg grating with reflectivity of 99.96% in B/Ge-codoped optical fiber with high-energy UV pulses", Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005); https://doi.org/10.1117/12.574229

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