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Thermo-optic Characteristics of Micro-structured Optical Fiber Infiltrated with Mixture Liquids
Ran Wang,Yuye Wang,Yinping Miao,Ying Lu,Nannan Luan,Congjing Hao,Liangcheng Duan,Cai Yuan,Jianquan Yao 한국광학회 2013 Current Optics and Photonics Vol.17 No.3
We present both theoretically and experimentally the thermo-optic characteristics of micro-structured optical fiber (MOF) filled with mixed liquid. The performance of MOF depends on the efficient interaction between the fundamental mode of the transmitted light wave and the tunable thermo-optic materials in the cladding. The numerical simulation indicates that the confinement loss of MOF presents higher temperature dependence with higher air-filling ratios d/Λ, longer incident wavelength and fewer air holes in the cladding. For the 4cm liquid-filled grapefruit MOF, we demonstrate from experiments that different proportions of solutions lead to tunable temperature sensitive ranges. The insertion loss and the extinction ratio are 3~4 dB and approximate 20 dB, respectively. The proposed liquid-filling MOF will be developed as thermo-optic sensor, attenuator or optical switch with the advantages of simple structure, compact configuration and easy fabrication.