通过对特殊光纤插入部分进行锥化来控制包层模的激发。

Control of Excitation of Cladding Modes by Tapering an Insertion of Special Fiber.

作者信息

Bakurov Diomid D, Ivanov Oleg V

机构信息

Ulyanovsk Branch of Kotel'nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, Ulitsa Goncharova 48, 432071 Ulyanovsk, Russia.

Radio Engineering Faculty, Ulyanovsk State Technical University, Ulitsa S. Venets 32, 432027 Ulyanovsk, Russia.

出版信息

Sensors (Basel). 2021 Apr 3;21(7):2498. doi: 10.3390/s21072498.

DOI:10.3390/s21072498

PMID:33916682

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8038420/

Abstract

A method for controlling the excitation of cladding modes by tapering special fiber insertions made of SM450 and coreless fibers is proposed. The coupling coefficients between the core mode and the cladding modes of the tapered fiber insertion are calculated. For the calculation, changes in the effective refractive indices and phases of the fiber core and in the cladding modes upon tapering are found. The field distribution of the core mode of the standard fiber transmitted through fiber insertion is obtained. The transmission characteristics of insertions of SM450 and coreless fibers during tapering are simulated and compared with the experiment. The possibility of controlling the transmission and excitation of various cladding modes is confirmed experimentally.

摘要

提出了一种通过对由SM450和无芯光纤制成的特殊光纤插入段进行锥形处理来控制包层模激发的方法。计算了锥形光纤插入段的纤芯模与包层模之间的耦合系数。为进行该计算，找到了光纤纤芯的有效折射率和相位以及包层模在锥形处理时的变化。获得了通过光纤插入段传输的标准光纤纤芯模的场分布。对SM450和无芯光纤插入段在锥形处理过程中的传输特性进行了模拟，并与实验结果进行了比较。通过实验证实了控制各种包层模传输和激发的可能性。