Open AccessAnalog differential-phase detection in optical coherence reflectometer
Author(s) -
Huan-Jang Huang,
Tsung Yu Hsieh,
Li Dek Chou,
Wen Chuan Kuo,
Chien Chou
Publication year - 2008
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.012847
Subject(s) - optics , optical coherence tomography , differential phase , coherence (philosophical gambling strategy) , optical time domain reflectometer , phase (matter) , profilometer , grating , measure (data warehouse) , physics , materials science , optical fiber , fiber optic sensor , computer science , fiber optic splitter , quantum mechanics , database , surface roughness
A novel differential-phase optical coherence reflectometer (DP-OCR) was proposed using a low-coherence source, integrating it with an analog differential-phase decoding method. In the experiment, the DP-OCR performed a localized surface profile measurement of an optical grating (1200 lp/mm) and demonstrated its ability to measure the translation speed of a tilted mirror. Experimentally, the resolution of the axial displacement of proposed DP-OCR at 185 pm was demonstrated.