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Proceedings Paper

Highly sensitive optical refractometer based on edge-written ultra-long period fiber grating formed by periodic grooves
Author(s): Y. Song; Y. J. Rao; T. Zhu; C. H. Shi
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Paper Abstract

An ultra-long-period fiber grating with periodic grooves structure (G-ULPFG) fabricated by using an edge-writing method with high frequency CO2 laser pulses is reported, for the first time to our knowledge. The experimental results show that the different resonant peaks of the G-ULPFG have different temperature and refractive index sensitivities, and in particular, the refractive index sensitivity is much larger than that of conventional ULPFG due to the edge-groove structure. Such a G-ULPFG could be used as a highly sensitive optical refractometer with temperature self-compensation.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70041O (16 May 2008); doi: 10.1117/12.785802
Show Author Affiliations
Y. Song, Chongqing Univ. (China)
Y. J. Rao, Chongqing Univ. (China)
Univ. of Electronic Science & Technology of China (China)
T. Zhu, Chongqing Univ. (China)
Univ. of Electronic Science & Technology of China (China)
C. H. Shi, Chongqing Univ. (China)


Published in SPIE Proceedings Vol. 7004:
19th International Conference on Optical Fibre Sensors

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