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.
© 2013 Optical Society of Korea
(230.1150) Optical devices : All-optical devices
(060.4005) Fiber optics and optical communications : Microstructured fibers
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(130.4815) Integrated optics : Optical switching devices
Original Manuscript: January 21, 2013
Revised Manuscript: April 15, 2013
Manuscript Accepted: April 15, 2013
Published: June 25, 2013
Ran Wang, Yuye Wang, Yinping Miao, Ying Lu, Nannan Luan, Congjing Hao, Liangcheng Duan, Cai Yuan, and Jianquan Yao, "Thermo-optic Characteristics of Micro-structured Optical Fiber Infiltrated with Mixture Liquids," J. Opt. Soc. Korea 17, 231-236 (2013)
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