Dual-peak long-period fiber gratings with enhanced refractive index sensitivity by finely tailored mode dispersion that uses the light cladding etching technique
Applied Optics, Vol. 46, Issue 4, pp. 451-455 (2007)
http://dx.doi.org/10.1364/AO.46.000451
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Abstract
We have experimentally investigated the mode dispersion property and refractive index sensitivity of dual-peak long-period fiber gratings (LPGs) that were sensitized by hydrofluoric acid (HF) etching.
The nature of the coupled cladding modes close to the dispersion turning point makes the dual-peak LPGs ultrasensitive to cladding property, permitting a fine tailoring of the mode dispersion and index sensitivity by the light cladding etching method using HF acid of only 1% concentration. As an implementation of an optical biosensor, the etched device was used to detect the concentration of hemoglobin protein in a sugar solution, showing a sensitivity as high as
© 2007 Optical Society of America
OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2370) Fiber optics and optical communications : Fiber optics sensors
ToC Category:
Diffraction and Gratings
History
Original Manuscript: June 27, 2006
Revised Manuscript: September 27, 2006
Manuscript Accepted: October 3, 2006
Virtual Issues
Vol. 2, Iss. 3 Virtual Journal for Biomedical Optics
Citation
Xianfeng Chen, Kaiming Zhou, Lin Zhang, and Ian Bennion, "Dual-peak long-period fiber gratings with enhanced refractive index sensitivity by finely tailored mode dispersion that uses the light cladding etching technique," Appl. Opt. 46, 451-455 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-46-4-451
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