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Intrinsic Fabry-Perot interferometeric sensor based on microfiber created by chemical etching.

Ruohui Wang1, Xueguang Qiao2

  • 1School of Physics, Northwest University, 229 Taibai Road, Xi'an 710069, China. wrhnwu@gmail.com.

Sensors (Basel, Switzerland)
|September 12, 2014
PubMed
Summary
This summary is machine-generated.

A novel microfiber Fabry-Perot interferometer sensor was developed using chemical etching. This fiber optic sensor demonstrates effective temperature sensing capabilities with a sensitivity of 14.3 pm/°C.

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Area of Science:

  • Photonics
  • Optical Sensing
  • Fiber Optics

Background:

  • Fabry-Perot interferometers are widely used for sensing applications.
  • Microfiber-based sensors offer advantages in miniaturization and sensitivity.
  • Photonic crystal fibers provide unique structures for optical manipulation.

Purpose of the Study:

  • To demonstrate an intrinsic Fabry-Perot interferometer sensor.
  • To utilize a microfiber fabricated from photonic crystal fiber.
  • To investigate the temperature sensing characteristics of the developed sensor.

Main Methods:

  • Fabrication of a microfiber with a suspended core via chemical etching of photonic crystal fiber.
  • Splicing the etched photonic crystal fiber section with single-mode fiber to create the sensing head.
  • Characterization of the sensor's response to temperature variations.

Main Results:

  • Successful fabrication of a micro-size suspended core microfiber Fabry-Perot interferometer.
  • Demonstration of temperature sensing capabilities.
  • Achieved a temperature sensitivity of 14.3 pm/°C.

Conclusions:

  • The developed microfiber Fabry-Perot interferometer is a viable sensor for temperature measurement.
  • Chemical etching is an effective method for fabricating such micro-interferometers.
  • The sensor exhibits good sensitivity for temperature monitoring.