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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Editor: Zhizhan Xu
  • Vol. 11, Iss. 4 — Apr. 1, 2013
  • pp: 040603–

KrF excimer laser-fabricated Bragg grating in optical microfiber made from pre-etched conventional photosensitive fiber

Zhengtong Wei, Nuan Jiang, Zhangqi Song, Xueliang Zhang, and Zhou Meng  »View Author Affiliations


Chinese Optics Letters, Vol. 11, Issue 4, pp. 040603- (2013)


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Abstract

A method to fabricate fiber Bragg grating (FBG) in an optical microfiber (OM) from a conventional photosensitive fiber is proposed in this letter. The cladding of a conventional photosensitive fiber is etched to 17 μm. The etched fiber is drawn to an OM 6 μm in diameter. The photosensitivity of the fabricated OM is effectively reserved. A FBG in the OM (MFBG) is successfully fabricated using a KrF excimer laser at a fluence of 400 mJ/cm2 through a phase mask with a pitch of 1 089.3 nm. The reflectivity of the FBG is approximately 10%, and the 3-dB spectrum bandwidth is 0.13 nm. The concentration of brine is measured by immersing the MFBG in the liquid, and the minimum detectable refractive index variation can reach 7.2 × 10-5 at a refractive index value of 1.33.

© 2013 Chinese Optics Letters

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(230.4000) Optical devices : Microstructure fabrication
(060.3738) Fiber optics and optical communications : Fiber Bragg gratings, photosensitivity

ToC Category:
Fiber Optics and Optical Communications

Citation
Zhengtong Wei, Nuan Jiang, Zhangqi Song, Xueliang Zhang, and Zhou Meng, "KrF excimer laser-fabricated Bragg grating in optical microfiber made from pre-etched conventional photosensitive fiber," Chin. Opt. Lett. 11, 040603- (2013)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-11-4-040603

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