Ultrabroad Bandwidth Polarization Filter Based on D-shaped Photonic Crystal Fibers with Gold Film

作者：Chen Hailiang^*; Li Shuguang; Ma Mingjian; Fan Zhenkai; Wu Yidong

来源：Plasmonics, 2015, 10(5): 1239-1242.

DOI：10.1007/s11468-015-9919-0

• Photonic crystal fiber
• Polarization filter
• Surface plasmon

An ultrabroad bandwidth polarization filter based on D-shaped photonic crystal fibers with gold film is proposed. The design of gold film deposited on the polished plane of the D-shaped photonic crystal fibers is benefit to generate multiple resonances between surface plasmon polaritons and photons. In our designed polarization filter, the resonant intensity in y-polarization direction is much stronger than in x-polarization direction. An ultrabroad bandwidth of exceeding 1 mu m with extinction ratio better than -20 dB is obtained. The performance characteristics of the filter can be improved further by optimizing the structure parameters of the D-shaped photonic crystal fibers.

• 出版日期2015-10
• 单位燕山大学