首页|Fabrication of long-period fiber gratings by CO2 laser in fiber under tension

Fabrication of long-period fiber gratings by CO2 laser in fiber under tension

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We demonstrate experimentally fabrication of CO2 laser written long-period fiber gratings (LPFGs) in single-mode fiber (SMF) under tension. New transmission dips can be generated due to the frozen-in stress in the fiber under tension.Dynamics analysis of laser writing process is performed to study the mechanism of the grating inscription. Experimental results show that the wavelength shift of new generated resonance dips can shift towards the longer or shorter wavelength with the increase of laser scanning cycles for gratings with different pitches.

long-period fiber grating (LPFG)frozen-in viscoelasticitywriting dynamics analysisasymmetric index distribution

LIU Yun-qi、TU Wen-tao、YANG Dan、WANG Ting-yun

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Key Laboratory of Specialty Fiber Optics and Optical Access Networks, School of Communication and Information Engineering, Shanghai University, Shanghai 200072, P. R. China

Shanghai Pujiang ProgramNew Century Excellent Talents in University, Ministry of Education of ChinaShanghai Shuguang ProgramShanghai Leading Academic Discipline Project

09PJ1404600NCET-10-008208SG40S30108

2011

上海大学学报(英文版)
上海大学

上海大学学报(英文版)

影响因子:0.196
ISSN:1007-6417
年,卷(期):2011.15(1)
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