22 September 2014 Method to athermalize a long-period fiber grating for interrogation of fiber Bragg grating–based sensors
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Abstract
A method is proposed to minimize the effect of temperature on a long-period fiber grating (LPG), enabling its effective use for the interrogation of wavelength-modulated fiber Bragg grating (FBG) sensors. The temperature dependence of LPG is compensated by means of creating the opposite effect from the temperature-induced strain, attributed by appropriately encapsulating in a specially designed Teflon tube. The encapsulated LPG has achieved six times stabilization over the bare LPG response for the temperature range of 20°C to 50°C. Application of the athermalized LPG for interrogation of an FBG-based temperature sensor is experimentally demonstrated.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Venkata Reddy Mamidi, Venkata Reddy Mamidi, Srimannarayana Kamineni, Srimannarayana Kamineni, L. N. Sai Prasad Ravinuthala, L. N. Sai Prasad Ravinuthala, Venkatapparao Thumu, Venkatapparao Thumu, Vengal Rao Pachava, Vengal Rao Pachava, } "Method to athermalize a long-period fiber grating for interrogation of fiber Bragg grating–based sensors," Optical Engineering 53(9), 096111 (22 September 2014). https://doi.org/10.1117/1.OE.53.9.096111 . Submission:
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