Compact multichannel MEMS based spectrometer for FBG sensing

Denis Ganziy, Bjarke Rose, Ole Bang

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    We propose a novel type of compact multichannel MEMS based spectrometer, where we replace the linear detector with a Digital Micromirror Device (DMD). The DMD is typically cheaper and has better pixel sampling than an InGaAs detector used in the 1550 nm range, which leads to cost reduction and better performance. Moreover, the DMD is a 2D array, which means that multichannel systems can be implemented without any additional optical components in the spectrometer. This makes the proposed interrogator highly cost-effective. The digital nature of the DMD also provides opportunities for advanced programmable spectroscopy.
    Original languageEnglish
    Title of host publicationProceedings of 25th International Conference on Optical Fiber Sensors
    Number of pages4
    PublisherSPIE - International Society for Optical Engineering
    Publication date2017
    Article number103230B
    Publication statusPublished - 2017
    Event25th International Conference on Optical Fiber Sensors - Jeju, Korea, Republic of
    Duration: 24 Apr 201728 Apr 2017


    Conference25th International Conference on Optical Fiber Sensors
    Country/TerritoryKorea, Republic of

    Bibliographical note

    Copyright 2017 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.


    • Detectors
    • Fiber gratings
    • Signal to noise ratio
    • Spectroscopy
    • Mirrors
    • Wavelength measurement
    • FBG interrogation
    • MEMS
    • DMD
    • DLP
    • spectroscopy


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