Improved cutback method measuring beat-length for high-birefringence optical fiber by fitting data of photoelectric signal - art. no. 662216

被引：0

作者：

Shi Zhi-Dong ^{[1
]}

Lin Jian-Qiang ^{[2
]}

Bao Huan-Huan ^{[1
]}

Liu Shu ^{[1
]}

Xiang Xue-Nong ^{[1
]}

机构：

[1] Shanghai Univ, Key Lab Special Fiber Opt, Shanghai 201800, Peoples R China

[2] Guangxi Inst Technol, Liuzhou 545006, Peoples R China

来源：

INTERNATIONAL SYMPOSIUM ON PHOTOELECTRONIC DETECTION AND IMAGING 2007: LASER, ULTRAVIOLET, AND TERAHERTZ TECHNOLOGY | 2008年 / 6622卷

关键词：

high-birefringence optical fiber; beat length; phase difference; cutback method; data processing; MODULATOR; LIGHT;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A photoelectric measurement system for measuring the beat length of birefringence fiber is set up including a set of rotating-wave-p late polarimeter using single photodiode. And two improved cutback methods suitable for measuring beat-length within millimeter range of high birefringence fiber are proposed through data processing technique. The cut length needs not to be restricted shorter than one centimeter so that the auto-cleaving machine is freely used, and no need to carefully operate the manually cleaving blade with low efficiency and poor success. The first method adopts the parameter-fitting to a saw-tooth function of tried beat length by the criterion of minimum square deviations, without special limitation on the cut length. The second method adopts linear-fitting in the divided length ranges, only restrict condition is the increment between different cut lengths less than one beat-length. For a section of holey high-birefringence fiber, we do experiments respectively by the two methods. The detecting error of beat-length is discussed and the advantage is compared.

引用

页码：62216 / 62216

页数：9