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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 12 — Jun. 6, 2011
  • pp: 11769–11779

Refractometer based on fiber Bragg grating Fabry-Pérot cavity embedded with a narrow microchannel

Kaiming Zhou, Zhijun Yan, Lin Zhang, and Ian Bennion  »View Author Affiliations

Optics Express, Vol. 19, Issue 12, pp. 11769-11779 (2011)

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We report on inscription of microchannels of different widths in optical fiber using femtosecond (fs) laser inscription assisted chemical etching and the narrowest channel has been created with a width down to only 1.2μm. Microchannels with 5μm and 35μm widths were fabricated together with Fabry-Pérot (FP) cavities formed by UV laser written fiber Bragg gratings (FBGs), creating high function and linear response refractometers. The device with a 5μm microchannel has exhibited a refractive index (RI) detection range up to 1.7, significantly higher than all fiber grating RI sensors. In addition, the microchannel FBG FP structures have been theoretically simulated showing excellent agreement with experimental measured characteristics.

© 2011 OSA

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(160.2750) Materials : Glass and other amorphous materials

ToC Category:

Original Manuscript: January 25, 2011
Revised Manuscript: March 11, 2011
Manuscript Accepted: March 24, 2011
Published: June 2, 2011

Kaiming Zhou, Zhijun Yan, Lin Zhang, and Ian Bennion, "Refractometer based on fiber Bragg grating Fabry-Pérot cavity embedded with a narrow microchannel," Opt. Express 19, 11769-11779 (2011)

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