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Related Experiment Video

Updated: Jun 20, 2026

Implementation of a Reference Interferometer for Nanodetection
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Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Fiber-optic interferometric sensor arrays with freedom from source phase-induced noise.

J L Brooks, M Tur, B Y Kim

    Optics Letters
    |September 5, 2009
    PubMed
    Summary

    We developed all-passive remote sensors that eliminate noise and crosstalk. This innovation uses time-domain addressing and synthetic heterodyne demodulation for reliable, sensitive measurements, achieving below 40 microrad/radicalHz sensitivity.

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    Area of Science:

    • Photonics and Sensor Technology
    • Optical Sensing Systems

    Background:

    • Traditional remote sensing arrays suffer from source phase-induced intensity noise and sensor crosstalk.
    • Environmental factors can cause signal fading in optical sensing systems.

    Purpose of the Study:

    • To propose and demonstrate an array of all-passive remote sensors.
    • To achieve noise-free and crosstalk-free sensor operation.
    • To enhance signal stability against environmental disturbances.

    Main Methods:

    • Utilizing high-duty-cycle time-domain addressing with laser diodes.
    • Implementing a synthetic heterodyne demodulation technique.
    • Developing an all-fiber implementation for a single remote sensor.

    Main Results:

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    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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    Related Experiment Videos

    Last Updated: Jun 20, 2026

    Implementation of a Reference Interferometer for Nanodetection
    16:11

    Implementation of a Reference Interferometer for Nanodetection

    Published on: April 26, 2014

    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
    09:03

    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

    Published on: January 7, 2019

    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
    05:57

    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

    Published on: April 1, 2020

    • Demonstrated freedom from source phase-induced intensity noise.
    • Achieved elimination of crosstalk between sensors.
    • Measured a sensitivity of below 40 microrad/radicalHz at signal frequencies above 600 Hz.
    • Showcased downlead insensitivity and prevention of signal fading.

    Conclusions:

    • The proposed all-passive sensor array offers a robust solution for remote sensing applications.
    • The synthetic heterodyne technique effectively combats environmental signal fading.
    • The system demonstrates high sensitivity and reliability for advanced optical sensing.