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In-fiber integrated Michelson interferometer.

Libo Yuan1, Jun Yang, Zhihai Liu

  • 1Photonics Research Center, College of Science, Harbin Engineering University, Harbin, China.

Optics Letters
|August 29, 2006
PubMed
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A new fiber-optic Michelson interferometer using two-core fiber was demonstrated. This device shows potential for sensing bending by analyzing phase shifts in the optical fiber.

Area of Science:

  • Optoelectronics
  • Fiber Optics
  • Interferometry

Background:

  • Fiber-optic sensors are crucial for remote and precise measurements.
  • Michelson interferometers are widely used for sensing applications.
  • Two-core fibers offer unique properties for integrated optical devices.

Purpose of the Study:

  • To propose and demonstrate a novel in-fiber integrated Michelson interferometer.
  • To investigate the sensing characteristics of this interferometer when subjected to bending.
  • To correlate fiber bending with phase shifts in the interferometer.

Main Methods:

  • Fabrication of an in-fiber Michelson interferometer using a segment of two-core fiber.
  • Integration of a mirrored fiber end to form the interferometer cavity.

Related Experiment Videos

  • Experimental investigation of the interferometer's response to applied bending.
  • Analysis of phase shifts in the two-core fiber as a function of bending.

    • Main Results:

    • Successful demonstration of a novel fiber-optic in-fiber integrated Michelson interferometer.
    • Observation of measurable phase shifts in response to two-core fiber bending.
    • Established a correlation between the degree of bending and the interferometer's phase shift.

    Conclusions:

    • The proposed two-core fiber Michelson interferometer is a viable platform for bending sensing.
    • The device exhibits sensitivity to external mechanical stimuli like bending.
    • This technology offers potential for developing new fiber-optic sensing applications.