Title

Fiber-Coupled In-Line Heterodyne Optical Interferometer For Minimally Invasive Sensing

Keywords

Acoustooptic devices; Heterodyne optical interferometers; Optical sensors; Scanning interferometers

Abstract

In this paper, the first fiber-coupled no-moving-parts scanning heterodyne interferometer design using a single acoustooptic device (AOD) is reported. The design features a high-stability inline reflective architecture with free-space-scanned minimally invasive sensing via a multizone reflective sensor chip. The common path fiber interconnection allows robust remoting of the compact sensing front end. A proof-of-concept sensing experiment measuring voltage-dependent birefringence is successfully conducted using a voltage-controlled nematic liquid crystal (NLC) sensor chip. The system features a 4.69-dB optical loss, a 200-MHz output frequency, and a 1550-nm eye-safe operation wavelength. Applications for the system include any fiber-remoted sensing using the proposed free-space minimally invasive interrogating optical beams. © 2005 IEEE.

Publication Date

8-1-2005

Publication Title

Journal of Lightwave Technology

Volume

23

Issue

8

Number of Pages

2449-2454

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/JLT.2005.851330

Socpus ID

24744441198 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/24744441198

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