中国物理B ›› 2016, Vol. 25 ›› Issue (12): 124210-124210.doi: 10.1088/1674-1056/25/12/104210

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Theoretical simulation of a polarization splitter based on dual-core soft glass PCF with micron-scale gold wire

Qiang Liu(刘强), Shuguang Li(李曙光), Xinyu Wang(王新宇), Min Shi(石敏)   

  1. Key Laboratory of Metastable Materials Science and Technology, College of Science, Yanshan University, Qinhuangdao 066004, China
  • 收稿日期:2016-05-15 修回日期:2016-07-29 出版日期:2016-12-05 发布日期:2016-12-05
  • 通讯作者: Shuguang Li E-mail:shuguangli@ysu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61178026, 61475134, and 61505175).

Theoretical simulation of a polarization splitter based on dual-core soft glass PCF with micron-scale gold wire

Qiang Liu(刘强), Shuguang Li(李曙光), Xinyu Wang(王新宇), Min Shi(石敏)   

  1. Key Laboratory of Metastable Materials Science and Technology, College of Science, Yanshan University, Qinhuangdao 066004, China
  • Received:2016-05-15 Revised:2016-07-29 Online:2016-12-05 Published:2016-12-05
  • Contact: Shuguang Li E-mail:shuguangli@ysu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61178026, 61475134, and 61505175).

摘要:

A polarization splitter based on dual-core soft glass photonic crystal fiber (PCF) filled with micron-scale gold wire is proposed. The characteristics of the polarization splitter are studied by changing the structural parameters of the PCF and the diameter of the gold wire with the finite element method (FEM). The simulation results reveal that the coupling length ratio of the soft glass-based PCF is close to 2 and the corresponding curve is more flat than that of the silica-based PCF. The broadband bandwidth is 226 nm in which the extinction ratio is lower than -20 dB by the soft glass-based PCF, i.e., from 1465 nm to 1691 nm which is competitive in the reported polarization splitters, and the bandwidth is just 32 nm by the silica-based PCF. The insertion loss by our polarization splitter is just 0.00248 dB and 0.43 dB at the wavelength of 1.47 μm and 1.55 μm. The birefringence is obviously increased and the coupling length is decreased by filling gold wire into the soft glass-based or the silica-based PCF. Also the birefringence based on the silica-based PCF is much larger than that based on the soft glass-based PCF whether or not the gold wire is introduced. The fabrication tolerance of the polarization splitter is also considered by changing the structural parameters. The polarization splitter possesses broad bandwidth, low insertion loss, simple structure and high fabrication tolerance.

关键词: photonic crystal fiber, polarization splitter, extinction ratio

Abstract:

A polarization splitter based on dual-core soft glass photonic crystal fiber (PCF) filled with micron-scale gold wire is proposed. The characteristics of the polarization splitter are studied by changing the structural parameters of the PCF and the diameter of the gold wire with the finite element method (FEM). The simulation results reveal that the coupling length ratio of the soft glass-based PCF is close to 2 and the corresponding curve is more flat than that of the silica-based PCF. The broadband bandwidth is 226 nm in which the extinction ratio is lower than -20 dB by the soft glass-based PCF, i.e., from 1465 nm to 1691 nm which is competitive in the reported polarization splitters, and the bandwidth is just 32 nm by the silica-based PCF. The insertion loss by our polarization splitter is just 0.00248 dB and 0.43 dB at the wavelength of 1.47 μm and 1.55 μm. The birefringence is obviously increased and the coupling length is decreased by filling gold wire into the soft glass-based or the silica-based PCF. Also the birefringence based on the silica-based PCF is much larger than that based on the soft glass-based PCF whether or not the gold wire is introduced. The fabrication tolerance of the polarization splitter is also considered by changing the structural parameters. The polarization splitter possesses broad bandwidth, low insertion loss, simple structure and high fabrication tolerance.

Key words: photonic crystal fiber, polarization splitter, extinction ratio

中图分类号:  (Fiber optics)

  • 42.81.-i
42.81.Gs (Birefringence, polarization) 71.45.Gm (Exchange, correlation, dielectric and magnetic response functions, plasmons)