2018-Characterization and Compensation of Phase Offset in Φ-OTDR With Heterodyne Detection

2018-12-12 Hits:

Teaching and Research Group:光纤传感与器件

Journal:Journal of Lightwave Technology

Key Words:Heterodyning, compensation, optical fiber measurement applications, optical time domain ...

Abstract:Characterizing and real-time compensating the time-skew and phase-mismatch of the in-phase and quadrature (I/Q) signals, for phase-sensitive optical time-domain reflectometry (Φ-OTDR) with heterodyne detection, are the aims of this paper. After amplitude imbalances are compensated, there are still some intrinsic distortions in demodulated signals, which are generated from the time-skew and phase-mismatch of I/Q signals. A novel method, proposed in this paper, can separate the impacts from RF cable length-difference, fiber pigtail length-difference, and the non-orthogonality between I/Q ...

All the Authors: Zinan Wang, Le Yang, Ji Xiong, Chongyu Lu, Yun Fu,Naitian Xue

First Author:Naitian Xue

Indexed by:Unit Twenty Basic Research

Correspondence Author:Zinan Wang

Discipline:Engineering

First-Level Discipline:Optical engineering

Volume:36

Issue:23

Page Number:5481-5487

Translation or Not:no

Date of Publication:2018-12-01

Date of Publication:2018-12-01