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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 22 — Aug. 1, 2011
  • pp: 4328–4332

Miniature tapered photonic crystal fiber interferometer with enhanced sensitivity by acid microdroplets etching

Sun-jie Qiu, Ye Chen, Jun-long Kou, Fei Xu, and Yan-qing Lu  »View Author Affiliations


Applied Optics, Vol. 50, Issue 22, pp. 4328-4332 (2011)
http://dx.doi.org/10.1364/AO.50.004328


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Abstract

We fabricate a miniature tapered photonic crystal fiber (PCF) interferometer with enhanced sensitivity by acid microdroplets etching. This method is very simple and cost effective, avoiding elongating the PCF, moving and refixing the device during etching, and measuring. The refractive index sensing properties with different PCF diameters are investigated both theoretically and experimentally. The tapering velocity can be controlled by the microdroplet size and position. The sensitivity greatly increases (five times, 750 nm / RIU ) and the size decreases after slightly tapering the PCF. The device keeps low temperature dependence before and after tapering. More uniformly and thinly tapered PCFs can be realized with higher sensitivity ( 100 times) by optimizing the etching process.

© 2011 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: March 29, 2011
Manuscript Accepted: June 12, 2011
Published: July 22, 2011

Citation
Sun-jie Qiu, Ye Chen, Jun-long Kou, Fei Xu, and Yan-qing Lu, "Miniature tapered photonic crystal fiber interferometer with enhanced sensitivity by acid microdroplets etching," Appl. Opt. 50, 4328-4332 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-22-4328

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