Polarization-dependent coupling characteristics of metal-wire filled dual-core photonic crystal fiber

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• 作者：Bing Sun (1) (2)
  Ming-Yang Chen (1)
  Yong-Kang Zhang (3)
  Jun Zhou (4)
  
  1. School of Mechanical Engineering ; Jiangsu University ; Zhenjiang聽 ; 212013 ; Jiangsu Province ; China
  2. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province ; College of Optoelectronic Engineering ; Shenzhen University ; Shenzhen聽 ; 518060 ; China
  3. School of Mechanical Engineering ; Southeast University ; Nanjing聽 ; 211189 ; Jiangsu Province ; China
  4. Faculty of Science ; Ningbo University ; Ningbo聽 ; 315211 ; Zhejiang Province ; China
  
• 关键词：Photonic crystal fiber ; Dual core ; Metal wire ; Polarization splitter
• 刊名：Optical and Quantum Electronics
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：47
• 期：2
• 页码：441-451
• 全文大小：2,188 KB
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• 刊物主题：Optics, Optoelectronics, Plasmonics and Optical Devices; Electrical Engineering; Characterization and Evaluation of Materials; Computer Communication Networks;
• 出版者：Springer US
• ISSN：1572-817X

文摘

We theoretically investigate a dual-core photonic crystal fiber filled with metal wire. The metal wire is filled into the air-hole between the two cores. The surface plasmon polarizations excited on metal wire present strong polarization-dependent coupling to the core modes in the dual-core photonic crystal fiber. Numerical simulations demonstrate that the coupling lengths show obvious reduction compared to conventional dual-core photonic crystal fibers. By the appropriate selection of the fiber parameters, a novel polarization splitter with extinction ratio lower than \(-20\) 聽dB over a 250-nm wavelength can be realized.