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23 September 2015 Temperature sensing on tapered single mode fiber using mechanically induced long period fiber gratings
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The modeling of a temperature optical fiber sensor is proposed and experimentally demonstrated in this work. The suggested structure to obtain the sensing temperature characteristics is by the use of a mechanically induced Long Period Fiber Grating (LPFG) on a tapered single mode optical fiber. A biconical fiber optic taper is made by applying heat using an oxygen-propane flame burner while stretching the single mode fiber (SMF) whose coating has been removed. The resulting geometry of the device is important to analyze the coupling between the core mode to the cladding modes, and this will determine whether the optical taper is adiabatic or non-adiabatic. On the other hand, the mechanical LPFG is made up of two plates, one grooved and other flat, the grooved plate was done on an acrylic slab with the help of a computerized numerical control machine (CNC). In addition to the experimental work, the supporting theory is also included.
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Sigifredo Marrujo-García, Jesús Salvador Velázquez-González, María Guadalupe Pulido-Navarro, Ernesto González-Ocaña, Saúl Mújica-Ascencio, and Fernando Martínez-Piñón "Temperature sensing on tapered single mode fiber using mechanically induced long period fiber gratings", Proc. SPIE 9577, Optical Modeling and Performance Predictions VII, 95770K (23 September 2015);

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