Chinese Journal of Lasers, Volume. 45, Issue 4, 406003(2018)
Characteristics Investigation of High Birefringent Micro-Structured Optical Fiber Filled with Magnetic Fluid at 2 μm Band
A new type of micro-structured optical fiber (MOF) is designed. The fiber cladding has two pairs of elliptical air holes that are perpendicular to each other. The larger holes are filled with air and the smaller holes are filled with magnetic fluid. The four holes form a rectangular core. The finite element method is utilized to simulate and analyze the birefringence and confinement loss of the fiber at 2 μm wavelength band, and the best fiber structure is obtained by the structure parameters optimization. The simulation results show that the optical fiber model birefringence can reach to 10-3, while the loss is less than 10-11 dB·m-1, thus, double standards of high birefringence and low confinement loss are achieved simultaneously. The refractive index of the magnetic fluid material can be changed by change of the external magnetic field, and then the effective refractive index of the fiber is changed. Consequently, the transmission of polarized light in the fiber can be tuned continuously.
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Guo Yuyu, Yan Fengping, Liu Shuo, Zhang Luna. Characteristics Investigation of High Birefringent Micro-Structured Optical Fiber Filled with Magnetic Fluid at 2 μm Band[J]. Chinese Journal of Lasers, 2018, 45(4): 406003
Category: Fiber optics and optical communication
Received: Oct. 11, 2017
Accepted: --
Published Online: Apr. 13, 2018
The Author Email: Fengping Yan (fpyan@bjtu.edu.cn)