16 May 2008 Intensity based optical fiber strain sensor using long period grating and core mode blocker
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Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70044E (2008) https://doi.org/10.1117/12.786077
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia
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.
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Du-sun Hwang, Du-sun Hwang, Linh Viet Nguyen, Linh Viet Nguyen, Dae Seung Moon, Dae Seung Moon, Youngjoo Chung, Youngjoo Chung, } "Intensity based optical fiber strain sensor using long period grating and core mode blocker", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70044E (16 May 2008); doi: 10.1117/12.786077; https://doi.org/10.1117/12.786077
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