Title :
Pressure/temperature sensor based on a dual-core photonic crystal fiber
Author :
Chen, Daru ; Hu, Gufeng ; Chen, Lingxia
Author_Institution :
Inst. of Inf. Opt., Zhejiang Normal Univ., Jinhua, China
Abstract :
A dual-core photonic crystal fiber (DC-PCF) is proposed for pressure/temperature sensing based on the mode coupling of the two fiber cores. The two solid fiber cores separated by an air hole in the cross-section lead to two independent waveguides inside the DC-PCF which accompany with mode coupling. Pressure/temperature sensor based on the DC-PCF is achieved when one fiber core on the input side is connected to a broadband light source and the other fiber core on the output side is connected to an optical spectrum analyzer. A pressure/temperature sensor based on the DC-PCF is designed with a transmission spectrum which is essentially sensitive to the pressure/temperature applied on the DC-PCF. As an example we design a pressure sensor based on a 10-cm DC-PCF for the sensing pressure range from 0 to 1000 MPa with a sensitivity of -3.47 pm/MPa, and a temperature sensor based on a 4-cm DC-PCF for the sensing temperature range from 0 to 1000 °C with a sensitivity of 20.7 pm/ °C. The fiber bending analysis of the DC-PCF is also presented.
Keywords :
fibre optic sensors; holey fibres; light sources; optical fibre couplers; optical waveguides; photonic crystals; pressure sensors; temperature sensors; air hole; broadband light source; dual-core photonic crystal fiber; fiber bending; independent waveguides; mode coupling; optical spectrum analyzer; pressure 0 MPa to 1000 MPa; pressure/temperature sensor; solid fiber cores; temperature 0 degC to 1000 degC; transmission spectrum; Abstracts; Optical fiber polarization; Optical fiber sensors; Optical polarization; Photonic crystal fiber; dual-core; fiber bending; mode coupling; pressure sensor; temperature sensor;
Conference_Titel :
Communications and Photonics Conference and Exhibition, 2011. ACP. Asia
Conference_Location :
Shanghai
Print_ISBN :
978-0-8194-8961-6
