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Proceedings Paper

Temperature sensor using a long period fiber grating fabricated by 800 nm femtosecond laser pulses
Author(s): Yongqin Yu; Shuangchen Ruan; Haili Yang; Chenlin Du; Jiarong Zheng
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Paper Abstract

In this letter, LPFGs in standard telecommunication fibers without hydrogen loading were fabricated in air using laser direct writing method, by femtosecond laser pulses with pulse duration of 200 fs and output wavelength of 800 nm. The loss peak of 1430 nm, the transmission loss of 22.86 dB and the FWHM of 6.6 nm were obtained. Temperature dependence of wavelength shift in air was measured by placing the LPFG in a temperature chamber that is temperature controlled in the range of 70 -150 °C. The temperature sensitivities (▵λ/▵T) are estimated by using linearly regression fits, which was 43.2 pm/°C. The linearity of the temperature sensitivities is high and the R-squared values for ▵λ /▵T is larger than 0.9979.

Paper Details

Date Published: 7 October 2010
PDF: 6 pages
Proc. SPIE 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 76550Q (7 October 2010); doi: 10.1117/12.865346
Show Author Affiliations
Yongqin Yu, Shenzhen Univ. (China)
Shuangchen Ruan, Shenzhen Univ. (China)
Haili Yang, Shenzhen Univ. (China)
Chenlin Du, Shenzhen Univ. (China)
Jiarong Zheng, Shenzhen Univ. (China)


Published in SPIE Proceedings Vol. 7655:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; Yoshiharu Namba; David D. Walker; Shengyi Li, Editor(s)

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