Fiber-coupled in-line heterodyne optical interfefometer for minimally invasive sensing

    Authors

    M. A. Arain;N. A. Riza

    Comments

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    Abbreviated Journal Title

    J. Lightwave Technol.

    Keywords

    acoustooptic devices; heterodyne optical inter-ferometers; optical; sensors; scanning interferometers; RING INTERFEROMETER; SENSOR; Engineering, Electrical & Electronic; Optics; Telecommunications

    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.

    Journal Title

    Journal of Lightwave Technology

    Volume

    23

    Issue/Number

    8

    Publication Date

    1-1-2005

    Document Type

    Article

    Language

    English

    First Page

    2449

    Last Page

    2454

    WOS Identifier

    WOS:000231427100012

    ISSN

    0733-8724

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