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两类超宽带单偏振单模光子晶体光纤的设计

Design of Two Kinds of Ultra-Broadband Single Polarization Single Mode Photonic Crystal Fibers

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摘要

基于模式截止法,设计了两种超宽带单偏振单模方形阵列液晶填充光子晶体光纤,利用全矢量有限元法分析了光纤纤芯中额外空气孔、纤芯孔间距及纤芯液晶填充孔径对单偏振单模传输特性的影响。所设计的带宽可调谐的超宽带单芯单偏振单模光子晶体光纤,其单偏振单模传输可在0.75~2.59 μm波段范围内调谐,限制损耗低于0.1 dB·km-1对应的单偏振单模传输带宽为970 nm。所设计的另一种光纤是在0.98~1.74 μm波段范围内具有单偏振单模传输特性的双芯光子晶体光纤,将其应用于波分复用系统的波分解复用器中,制备了一种长度仅为1.06 mm的光子晶体光纤波分器,实现了具有单偏振单模传输特性的1.31 μm和1.55 μm光分束。

Abstract

Two kinds of ultra-broadband single polarization single mode (SPSM) square-lattice photonic crystal fibers with liquid crystal infiltrating are designed based on the mode cut-off method. The effects of the additional holes, the pitches in the fiber core, and the diameters of the liquid crystal filled holes on the SPSM operation are investigated with the full vector finite element method. The designed band-tunable ultra-broadband SPSM single-core photonic crystal fiber is obtained. Its SPSM operation can be tuned from 0.75 μm to 2.59 μm, and the widest SPSM bandwidth is 970 nm under a confinement loss of less than 0.1 dB·km-1. Moreover, the designed dual-core photonic crystal fiber is achieved with SPSM operation within the wavelength range from 0.98 μm to 1.74 μm, which can be applied in the wavelength division demultiplexer. In addition, a photonic crystal fiber wavelength splitter with a length of only 1.06 mm is fabricated, which can be used to realize the splitting of 1.31 μm and 1.55 μm lights with SPSM operation.

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中图分类号:O436

DOI:10.3788/lop56.040602

所属栏目:光纤光学与光通信

基金项目:唐山市科技计划项目(17130254a)

收稿日期:2018-07-24

修改稿日期:2018-08-24

网络出版日期:2018-09-04

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姜凌红:唐山学院智能与信息工程学院, 河北 唐山 063000

联系人作者:姜凌红(no1shajia@163.com)

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引用该论文

Jiang Linghong. Design of Two Kinds of Ultra-Broadband Single Polarization Single Mode Photonic Crystal Fibers[J]. Laser & Optoelectronics Progress, 2019, 56(4): 040602

姜凌红. 两类超宽带单偏振单模光子晶体光纤的设计[J]. 激光与光电子学进展, 2019, 56(4): 040602

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