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23 February 2009 Analysis of photonic crystal fiber bend character
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With the development of optical fiber manufacture and optical fiber sensor technology, more and more attention is paid to the photonic crystal fiber (PCF) sensors, such as gas sensors, bend sensors and strain sensors. Especially, the bend character of PCF is very important for designing bend sensors. In this paper, we adopt the multipole method to study the bend character of Total Internal Reflection PCF (TIR-PCF), and the relationship between bend radius and bend loss of TIR-PCF is investigated theoretically. As a result, the bend loss of PCF will be variable according to bend radius and it is also different with the same bend radius as the TIR-PCF structure parameter is different. Furthermore, the bend stress distribution on the TIR-PCF is analyzed carefully, and the minimum endurable bend radius is given. The simulation result in this paper will provide primary references for the PCF bend sensors designing.
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Weihong Bi, Xuan Guo, Shuo Ma, Guangwei Fu, and Wa Jin "Analysis of photonic crystal fiber bend character", Proc. SPIE 7278, Photonics and Optoelectronics Meetings (POEM) 2008: Fiber Optic Communication and Sensors, 72780P (23 February 2009);

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