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Proceedings Paper

Characteristics of novel long-period fiber gratings written by focused high-frequency CO2 laser pulses
Author(s): Yun-Jiang Rao; Yi-Ping Wang; Zeng-Lin Ran; Tao Zhu; Ban-Mei Yu
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Paper Abstract

In this paper, we report novel long-period fiber gratings (LPFGs) fabricated by using an improved CO2 exposure method, which is based on the thermal shock effect of high-frequency CO2 laser pulses at several kHz. Compared with the method using low-frequency laser pulses at several Hz reported previously, this new technique is more effective due to the significant increase in the transient laser energy density focused on the fibre, which is likely to cause larger densification and residual stress relief and hence larger refractive index change in the fibre. The optical and mechanical characteristics of such a type of LPFGs have been studied by experiment.

Paper Details

Date Published: 17 October 2001
PDF: 7 pages
Proc. SPIE 4581, Passive Components and Transmission Systems, (17 October 2001); doi: 10.1117/12.445056
Show Author Affiliations
Yun-Jiang Rao, Chongqing Univ. (China)
Yi-Ping Wang, Chongqing Univ. (China)
Zeng-Lin Ran, Chongqing Univ. (China)
Tao Zhu, Chongqing Univ. (China)
Ban-Mei Yu, Chongqing Univ. (China)

Published in SPIE Proceedings Vol. 4581:
Passive Components and Transmission Systems
Chongcheng Fan; Norman S. Kwong, Editor(s)

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