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Related Experiment Video

Updated: Jun 15, 2026

Quasi-light Storage for Optical Data Packets
07:45

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Published on: February 6, 2014

Optical fiber phase discriminator.

B L Danielson

    Applied Optics
    |March 6, 2010
    PubMed
    Summary

    Optical fiber phase discriminators convert phase changes to amplitude changes, similar to radio frequency devices. Their sensitivity is proportional to the optical fiber

    Area of Science:

    • Optoelectronics
    • Photonics
    • Microwave Engineering

    Background:

    • Phase discriminators are crucial at radio frequency (RF) and microwave frequencies.
    • These devices convert phase or frequency variations into amplitude changes.
    • Applications include oscillator stabilization and angle demodulation.

    Purpose of the Study:

    • To demonstrate the construction of phase discriminators in the visible light spectrum.
    • To utilize optical fibers as delay-line elements for phase discrimination.
    • To analyze the operating principles and sensitivity of optical fiber phase discriminators.

    Main Methods:

    • Implementing optical fibers as delay-line elements.
    • Developing a phase discriminator operating in the visible region (0.6328 microm).

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  • Analyzing the relationship between device sensitivity and fiber propagation delay time.

    • Main Results:

    • Successful construction of an optical-fiber-based phase discriminator.
    • Demonstrated conversion of phase changes to amplitude changes using optical fibers.
    • Sensitivity was found to be directly proportional to the fiber propagation delay time.

    Conclusions:

    • Optical fiber delay-line phase discriminators can be constructed for visible light applications.
    • These devices offer similar functionality to traditional RF/microwave phase discriminators.
    • The sensitivity is tunable via the length of the optical fiber used.