Acta Optica Sinica, Volume. 36, Issue 7, 706004(2016)
High Sensitivity Magnetic Field and Temperature Sensor of Photonic Crystal Fiber Based on Directional Coupling
A high sensitivity magnetic field and temperature sensing structure based on photonic crystal fiber(PCF) is designed. Magnetic liquid is filled in an air hole of PCF cladding to form the directional coupling structure. The magnetic field and temperature variations of the structure are measured. The characteristics of the sensor are studied simulatively by using a full vector finite element method (FEM). The results show that the sensing structure can realize measurement within the magnetic field range of 100~250 Oe(1 Oe=79.58 A/m) and the temperature range of 10~60 ℃. The magnetic field and temperature sensitivities can reach 1.10 nm/Oe and -3.86 nm/℃ within the range.
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Shi Weihua, You Chengjie. High Sensitivity Magnetic Field and Temperature Sensor of Photonic Crystal Fiber Based on Directional Coupling[J]. Acta Optica Sinica, 2016, 36(7): 706004
Category: Fiber Optics and Optical Communications
Received: Feb. 29, 2016
Accepted: --
Published Online: Jul. 8, 2016
The Author Email: Weihua Shi (njupt_shiwh@126.com)