Affiliation:
1. Guangdong University of Technology
2. Guangdong Provincial Key Laboratory of Photonics Information Technology
3. Université libre de Bruxelles
Abstract
What we believe to be a new hybrid-polarization diversity scheme which can eliminate the polarization state variation caused by wavelength tuning of laser in optical frequency domain reflectometry is proposed in the paper. In the scheme, a 45° polarizer is used to maintain the polarization of signals. It decreases the polarization angle fluctuation to 2.81° and realizes a −145 dB test sensitivity with a 32 dB Rayleigh scattering signal-to-noise ratio in a 10 m fiber single test. The polarization fading suppression is achieved for tests with a large wavelength tuning range from 1480 nm to 1640 nm. Meanwhile, a 6 µm spatial resolution is also achieved. The proposed scheme can be applied to the structure measurement of high-precision optical fiber devices with high spatial resolution and sensitivity.
Funder
National Key Research and Development Program of China
National Science Fund for Distinguished Young Scholars
National Natural Science Foundation of China
Guangdong Province Introduction of Innovative R&D Team
Guangdong Provincial Pearl River Talents Program[China]
Subject
Atomic and Molecular Physics, and Optics