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Proceedings Paper

Experimental characterization of the spectra of etched long-period grating pairs
Author(s): Jin-Fei Ding; A. Ping Zhang; Hong-Yan Fu
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Paper Abstract

After an analysis of the spectral characteristics of the long-period grating (LPG) with decreasing the fiber cladding diameter, we experimentally investigated the spectra of etched LPG pairs (LPGPs) with ~3 dB transmissivity (as in-fiber M-Z interferometers). The evolutions of the transmission spectra were characterized as the cladding diameters were decreased by HF etching process. A shift of the stop-band of LPG and interference pattern of LPGP to longer wavelength was observed with the reduction of cladding diameter, in which that of higher order cladding mode induced a larger shift. The responses of the LPGs and LPGPs with different etching degrees to the change of the surrounding refractive-index were measured, and an increased sensitivity is observed in the experiment.

Paper Details

Date Published: 3 December 2005
PDF: 9 pages
Proc. SPIE 6019, Passive Components and Fiber-based Devices II, 60193H (3 December 2005); doi: 10.1117/12.635985
Show Author Affiliations
Jin-Fei Ding, Zhejiang Univ. (China)
A. Ping Zhang, Zhejiang Univ. (China)
Hong-Yan Fu, Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 6019:
Passive Components and Fiber-based Devices II
Yan Sun; Jianping Chen; Sang Bae Lee; Ian H. White, Editor(s)

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