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Proceedings Paper

Intensity based optical fiber strain sensor using long period grating and core mode blocker
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Paper Abstract

We report an intensity based fiber strain sensor using a long period grating (LPG) pair along with an in-line core mode blocker. By sandwiching the core mode blocker fabricated by arc method between a LPG pair, an band-pass filter was formed. Measured by optical power meter at one specific wavelength, the transmitted power was found to decrease as a variation of axial strain is applied on one single LPFG, therefore we can measure the applied strain by measuring the transmitted power. The measured response of voltage for change of strain was 6.37pV/ με.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70044E (16 May 2008); doi: 10.1117/12.786077
Show Author Affiliations
Du-sun Hwang, Gwangju Institute of Science and Technology (South Korea)
Linh Viet Nguyen, Gwangju Institute of Science and Technology (South Korea)
Dae Seung Moon, Gwangju Institute of Science and Technology (South Korea)
Youngjoo Chung, Gwangju Institute of Science and Technology (South Korea)


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

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