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Updated: May 18, 2026

Writing Bragg Gratings in Multicore Fibers
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Microfiber-based Bragg gratings for sensing applications: a review.

Jun-Long Kou1, Ming Ding, Jing Feng

  • 1College of Engineering and Applied Sciences and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China. koujunlong2006@163.com

Sensors (Basel, Switzerland)
|September 27, 2012
PubMed
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Microfiber-based Bragg gratings (MFBGs) offer compact, ultra-small optical fiber sensing with large evanescent fields. This review covers MFBG fabrication, sensing capabilities for refractive index, temperature, and strain, and summarizes existing MFBG sensing elements.

Area of Science:

  • Optoelectronics and Photonics
  • Fiber Optic Sensing Technology

Background:

  • Microfiber-based Bragg gratings (MFBGs) are gaining prominence as advanced optical fiber sensors.
  • Their compact size and significant evanescent field make them highly attractive for sensing applications.

Purpose of the Study:

  • To review the fundamental fabrication techniques for MFBGs.
  • To discuss the sensing characteristics and diverse applications of MFBGs.
  • To compile a summary of MFBG sensing elements from existing literature.

Main Methods:

  • Fabrication techniques for MFBGs are introduced.
  • Sensing properties, including refractive index (RI), temperature, and strain/force measurements, are discussed.
  • A tabulation of selected MFBG sensing elements is presented.
Keywords:
focused ion beamforcegratingmicrofiberoptical fabricationoptical fiber componentrefractive indexsensorstraintemperature

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Last Updated: May 18, 2026

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Main Results:

  • MFBGs demonstrate potential for ultra-small optical fiber sensing.
  • Key applications include precise measurements of RI, temperature, and strain/force.
  • The review provides a consolidated overview of MFBG sensing capabilities.

Conclusions:

  • MFBGs represent a significant advancement in miniaturized optical fiber sensing.
  • Their versatility in measuring various physical parameters highlights their broad applicability.
  • The summarized data serves as a valuable resource for future MFBG research and development.