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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 14 — Jul. 15, 2012
  • pp: 2925–2927

Microfiber Fabry–Perot interferometer fabricated by taper-drawing technique and its application as a radio frequency interrogated refractive index sensor

Jiejun Zhang, Qizhen Sun, Ruibing Liang, Jianghai Wo, Deming Liu, and Perry Shum  »View Author Affiliations


Optics Letters, Vol. 37, Issue 14, pp. 2925-2927 (2012)
http://dx.doi.org/10.1364/OL.37.002925


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Abstract

We propose a novel fiber Fabry–Perot interferometer (FPI) that incorporates a length of microfiber as its cavity and two fiber Bragg gratings (FBGs) as reflectors. The microfiber FPI is simply fabricated by flame-heated taper-drawing the central spot of an FBG into a section of microfiber. Ambient refractive index (RI) influences the effective index of microfiber, and thus the free spectrum range of the microfiber FPI, resulting in RI sensing. A dual-wavelength fiber laser based on the microfiber FPI is constructed, enabling radio frequency interrogation with high resolution. RI sensitivity of 911MHz/RIU is experimentally demonstrated for microfiber FPI with equivalent diameter of 1.455 μm. Simulation results indicate that the sensitivity can be further enhanced by reducing the diameter of the microfiber.

© 2012 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(280.3420) Remote sensing and sensors : Laser sensors
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings
(060.4005) Fiber optics and optical communications : Microstructured fibers
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: April 24, 2012
Revised Manuscript: June 3, 2012
Manuscript Accepted: June 4, 2012
Published: July 12, 2012

Citation
Jiejun Zhang, Qizhen Sun, Ruibing Liang, Jianghai Wo, Deming Liu, and Perry Shum, "Microfiber Fabry–Perot interferometer fabricated by taper-drawing technique and its application as a radio frequency interrogated refractive index sensor," Opt. Lett. 37, 2925-2927 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-14-2925

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