Application of Crossed Polarizer Method in the Measurement of Differential Group Delay of Optical Fibers

Author:

Wu Cheng12,Yu Fei23ORCID,Feng Suya2,Yu Chunlei23,Xu Lixin1,Zhai Ruizhan4,Jia Zhongqing4,Hu Lili23

Affiliation:

1. School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China

2. Key Laboratory of High Power Laser Materials, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

3. Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China

4. Laser Institute, Qilu University of Technology (Shandong Academy of Sciences), Qingdao 266000, China

Abstract

In this paper, we report the use of crossed polarizer technique to measure the differential group delay (DGD) of few-mode optical fiber (FMF). The windowed Fourier transform (WFT) is applied in the analysis of beat length measurement in the spectral domain to obtain the dependence of DGD as a function of wavelength. The birefringence of polarization-maintaining fiber (PMF) and the DGD of FMF are measured by applying our method. We discuss the noise background, the width of DGD peaks, and the possible errors introduced in the optical path in the modified crossed polarizer technique.

Funder

National Key Research and Development Program of China

Natural Science Foundation of Hebei Province

Chinese Academy of Sciences (Pioneer Hundred Talents Program

National Natural Science Foundation of China

Key R&D Program of Shandong Province

Publisher

MDPI AG

Subject

Radiology, Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics

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