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Sensors 2013, 13(3), 3028-3038; doi:10.3390/s130303028
Article

High Temperature Optical Fiber Sensor Based on Compact Fattened Long-Period Fiber Gratings

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Received: 5 January 2013; in revised form: 15 February 2013 / Accepted: 22 February 2013 / Published: 4 March 2013
(This article belongs to the Special Issue Laser Sensing and Imaging)
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Abstract: A compact high temperature fiber sensor where the sensor head consists of a short fattened long period fiber grating (F-LPFG) of at least 2 mm in length and background loss of −5 dBm is reported. On purpose two different F-LPFGs were used to measure temperature variations, taking advantage of their broad spectrum and the slope characteristics of the erbium light source. This approach affected the spectrum gain as the linear band shifting took place. The measured sensitivity of the long period fiber gratings were about 72 pm/°C in a range from 25 to 500 °C. Here, the temperature rate of the experiment was 0.17 °C/s and the temperature response time was within 3 s. Moreover, temperature changes were detected with an InGaAs photodetector, where a sensitivity of 0.05 mV/°C was achieved.
Keywords: long-period fiber grating; temperature sensor; electric arc; dispersion shifted fiber; fattening long-period fiber grating; temperature sensor; electric arc; dispersion shifted fiber; fattening
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Mata-Chávez, R.I.; Martínez-Rios, A.; Estudillo-Ayala, J.M.; Vargas-Rodríguez, E.; Rojas-Laguna, R.; Hernández-García, J.C.; Guzmán-Chávez, A.D.; Claudio-González, D.; Huerta-Mascotte, E. High Temperature Optical Fiber Sensor Based on Compact Fattened Long-Period Fiber Gratings. Sensors 2013, 13, 3028-3038.

AMA Style

Mata-Chávez RI, Martínez-Rios A, Estudillo-Ayala JM, Vargas-Rodríguez E, Rojas-Laguna R, Hernández-García JC, Guzmán-Chávez AD, Claudio-González D, Huerta-Mascotte E. High Temperature Optical Fiber Sensor Based on Compact Fattened Long-Period Fiber Gratings. Sensors. 2013; 13(3):3028-3038.

Chicago/Turabian Style

Mata-Chávez, Ruth I.; Martínez-Rios, Alejandro; Estudillo-Ayala, Julián M.; Vargas-Rodríguez, Everardo; Rojas-Laguna, Roberto; Hernández-García, Juan C.; Guzmán-Chávez, Ana D.; Claudio-González, David; Huerta-Mascotte, Eduardo. 2013. "High Temperature Optical Fiber Sensor Based on Compact Fattened Long-Period Fiber Gratings." Sensors 13, no. 3: 3028-3038.


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