Optimal design for elliptical holey fiber with stable polarization beat-length  

作　　者：石志东 林建强 何伟 

机构地区：[1]Key Laboratory of Specialty Fiber Optics and Optical Access Networks, School of Communication and Information Engineering, Shanghai University [2]Department of Information and Computation of Science, Guangxi University of Technology

出　　处：《Journal of Shanghai University(English Edition)》2011年第2期89-91,共3页上海大学学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos.60777031, 11074164);the Shanghai Leading Academic Discipline Project (Grant No.S30108)

摘　　要：In order to design birefringent holey fiber with beat-length independent of wavelength, an asymmetric structure is introduced to reduce its wavelength-sensitivity. The influence of structural parameters on the modal birefringence is calculated and analyzed. After optimizing the parameters, a flat dispersion curve of beat-length is obtained. The beat-length changes from 89.8 mm to 91.0 mm in wavelength range from 1.1 μm, to 1.7μm, and its relative variation is 1.38%. If this fiber is made into zero-order quarter wave plate, the phase delay can be easily controlled in （90±1）°.In order to design birefringent holey fiber with beat-length independent of wavelength, an asymmetric structure is introduced to reduce its wavelength-sensitivity. The influence of structural parameters on the modal birefringence is calculated and analyzed. After optimizing the parameters, a flat dispersion curve of beat-length is obtained. The beat-length changes from 89.8 mm to 91.0 mm in wavelength range from 1.1 μm, to 1.7μm, and its relative variation is 1.38%. If this fiber is made into zero-order quarter wave plate, the phase delay can be easily controlled in （90±1）°.

关 键 词：fiber optics holey fiber modal birefringence beat-length wavelength sensitivity 

分 类 号：TQ340.1[化学工程—化纤工业]