Title :
High-birefringence fiber-optic polarimeter with submicroradian phase delay detectability
Author :
Mermelstein, Marc D.
Author_Institution :
Geo-Centers, Inc., Newton Upper Falls, MA, USA
fDate :
4/1/1986 12:00:00 AM
Abstract :
The performance of a fiber-optic polarimetric sensor is characterized. The polarimeter is constructed from 50 m of high-birefringence bow-tie fiber. Quadrature is maintained with the phase tracking dc technique. A 90° splice at the fiber midpoint provides optical common mode rejection. Minimum detectable rms phase delays below 1.0 μrad in a 1-Hz bandwidth are readily achievable at frequencies greater than 5.0 kHz. This compares well with shot noise estimates for the rms phase delay fluctuations.
Keywords :
Optical fiber transducers; Optical interferometry; Optical polarization; Bandwidth; Delay estimation; Optical fiber sensors; Optical noise; Optical sensors; Phase detection; Phase estimation; Phase frequency detector; Phase noise; Sensor phenomena and characterization;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.1986.1074726
