Free-space wavelength-multiplexed optical scanner demonstration

    Authors

    Z. Yaqoob;N. A. Riza

    Comments

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    Abbreviated Journal Title

    Appl. Optics

    Keywords

    ATTENUATOR; Optics

    Abstract

    Experimental demonstration of a no-moving-parts free-space wavelength-multiplexed optical scanner (W-MOS) is presented. With fast tunable lasers or optical filters and planar wavelength dispersive elements such as diffraction gratings, this microsecond-speed scanner enables large several-centimeter apertures for subdegree angular scans. The proposed W-MOS design incorporates a unique optical amplifier and variable optical attenuator combination that enables the calibration and modulation of the scanner response, leading to any desired scanned laser beam power shaping. The experimental setup uses a tunable laser centered at 1560 nm and a 600-grooves/nun blazed reflection grating to accomplish an angular scan of 12.92degrees as the source is tuned over an 80-nm bandwidth. The values for calculated maximum optical beam divergance, required wavelength resolution, beam-pointing accuracy, and measured scanner insertion loss are 1.076 mrad, 0.172 nm, 0.06 mrad, and 4.88 dB, respectively. (C) 2002 Optical Society of America.

    Journal Title

    Applied Optics

    Volume

    41

    Issue/Number

    26

    Publication Date

    1-1-2002

    Document Type

    Article

    Language

    English

    First Page

    5568

    Last Page

    5573

    WOS Identifier

    WOS:000177898300014

    ISSN

    1559-128X

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