Refractive index profiling of a few-mode fiber from fundamental mode excitation

被引：1

作者：

Tsai, Wan-Shao ^{[1
]}

Chang, Che-Kai ^{[1
]}

Sheu, Fang-Wen ^{[2
]}

Wang, Yao-Hsuan ^{[2
]}

Chen, Sy-Hann ^{[2
]}

机构：

[1] Natl Chi Nan Univ, Dept Appl Mat & Optoelect Engn, Nantou 54561, Taiwan

[2] Natl Chiayi Univ, Dept Electrophys, Chiayi 60004, Taiwan

来源：

OPTICS COMMUNICATIONS | 2014年 / 323卷

关键词：

Fiber characterization; Fiber optics imaging; Index measurement; Refractive index profile; OPTICAL WAVE-GUIDES; NEAR-FIELD METHOD; MULTIMODE FIBER; TRANSMISSION; LIGHT;

D O I：

10.1016/j.optcom.2014.03.006

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The fundamental mode of a small core step index few mode fiber, originally designed for single mode operation at 1310/1550 nm, was selectively excited at visible wavelengths from a single-mode fiber by adiabatically tapering the fusion splice. A two-dimensional refractive index profile of the few-mode fiber was reconstructed directly from measured guided mode intensity distribution and its spatial partial derivatives with a modified end-fire coupling method using a differential inverse calculation algorithm, which applies only for single-mode guiding. (C) 2014 Elsevier BY. All rights reserved.

引用

页码：138 / 142

页数：5

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