Angstrom sensitivity polarization multiplexed heterodyne acousto-optic interferometric sensor

Author

Riza, Nabeel A. ; Arain, Muzammil A.

Author_Institution

Sch. of Opt./CREOL, Central Florida Univ., Orlando, FL, USA

fYear

2004

fDate

24-27 Oct. 2004

Firstpage

1289

Abstract

To the best of our knowledge, for the first time is proposed and demonstrated an angstrom level optical path length (OPL) detection sensitivity polarization multiplexed heterodyne acousto-optic interferometric sensor. In particular, it is shown how polarization multiplexing can be combined with a single acousto-optic deflector (AOD) or Bragg cell in a self-aligning optical geometry to realize a super phase stability vibration and environment tolerant optical interferometric sensor. A proof-of-concept experiment measures the voltage dependent phase change due to the refractive index change of a liquid crystal sensor chip.

Keywords

Bragg gratings; acousto-optical deflectors; acousto-optical devices; heterodyne detection; light interferometers; light polarisation; liquid crystal devices; optical sensors; stability; AOD; Bragg cell; acousto-optic deflector; angstrom sensitivity; detection sensitivity; liquid crystal sensor chip; optical path length; polarization multiplexed heterodyne acousto-optic interferometric sensor; polarization multiplexing; refractive index change; self-aligning optical geometry; super phase stability vibration environment tolerant optical interferometric sensor; voltage dependent phase change; Acoustic signal detection; Geometrical optics; Optical interferometry; Optical mixing; Optical polarization; Optical refraction; Optical sensors; Optical variables control; Stability; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2004. Proceedings of IEEE

Print_ISBN

0-7803-8692-2

Type

conf

DOI

10.1109/ICSENS.2004.1426417

Filename

1426417