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Proceedings Paper

Study on the photosensitivity of birefringent grating in copolymer optical fiber with high concentration
Author(s): Hui Ma; Zengchang Li; Hai Ming; Qijin Zhang; HwaYaw Tam; Yongsheng Zhang; Dong Wang; Douguo Zhang; Tao Zhang; Pei Wang; Jianping Xie
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Paper Abstract

A novel copolymer optical fiber with high azobenzene concentration is reported (more than 3.2 mol %). The orientation process of the preform was fitted with corrected bi-exponential equation. Compared with the doped one, the photosensitivity of this kind of copolymer optical fiber preform is analyzed. The influence of azobenzene concentrations and write conditions on photosensitivity of copolymerized PMMA was analyzed. Then, long-period of 120um birefringent grating was fabricated in the single mode fiber with core refractive index of 1.485 (at wavelength of 1.5um), and relative index difference delta of 0.008. The duty cycle is 50%, and the refractive index change in the exposed area is about 4*10-4 for the ordinary or extraordinary ray.

Paper Details

Date Published: 17 January 2005
PDF: 7 pages
Proc. SPIE 5644, Optoelectronic Devices and Integration, (17 January 2005); doi: 10.1117/12.572264
Show Author Affiliations
Hui Ma, Univ. of Science and Technology of China (China)
Zengchang Li, Univ. of Science and Technology of China (China)
Hai Ming, Univ. of Science and Technology of China (China)
Qijin Zhang, Univ. of Science and Technology of China (China)
HwaYaw Tam, Hong Kong Polytechnic Univ. (Hong Kong China)
Yongsheng Zhang, Univ. of Science and Technology of China (China)
Dong Wang, Univ. of Science and Technology of China (China)
Douguo Zhang, Univ. of Science and Technology of China (China)
Tao Zhang, Univ. of Science and Technology of China (China)
Pei Wang, Univ. of Science and Technology of China (China)
Jianping Xie, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 5644:
Optoelectronic Devices and Integration
Hai Ming; Xuping Zhang; Maggie Yihong Chen, Editor(s)

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