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带有光子晶体U-型谐振器的反射式分束器

Reflecting Splitter Based on Photonic Crystal U-Shaped Resonators

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摘要

为从波长信道中实现信号优良的选择性输出,设计了带有光子晶体U-型谐振器(PCUR)的反射式分束器结构。利用时域有限差分(FDTD)方法研究了其结构电磁波功率分束特性。设计的4 种对称结构可用于输入波长的功率二等均分,在第三通信窗口都具有传输率高的特性;设计的5 种的非对称结构具有峰值波长信号串扰弱的特性。根据设计需求,在带有3×2 PCUR 的对称结构中分别调整其结构的两PCURs 的散射介质柱半径,或其内部介质柱半径,能设计出不同信道波长间隔的高传输率分束器。研究表明:这些微型波长分束器件具有波长选择性优良、设计灵活、峰值波长处串扰弱等优点。在低损耗光路集成设计、波长密集型光通信系统设计等方面存在潜在应用价值。

Abstract

In order to obtain excellent output signals from wavelength channels, the structures of reflecting splitters based on photonic crystal U- shaped resonators (PCUR) are designed. Electromagnetic wave power splitting characteristics of these structures are studied by the time- domain finite- difference method. Four symmetrical structures can split wavelength power into two equal parts, and all of them have the characteristic of high transmission efficiency in the third communication window. Five asymmetrical structures have the characteristic of low signal crosstalk at the peak wavelength. According to our needs of designs, high transmission efficiency splitters with different channel wavelength intervals can be obtained by changing radii of scattering dielectric rods or 3×2 inner rods of the two PCURs in the symmetrical structure of reflecting splitters based on 3×2 PCURs. The results show that these micro reflecting splitters based on PCURs have the advantages of excellent wavelength selectivity, flexible designs, low crosstalk at peak wavelength and so on. These structures have potentially applicable value in the fields of low loss optical integrated circuits, high density wavelength optical communication systems etc.

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中图分类号:TN248.1

DOI:10.3788/lop53.022301

所属栏目:光学器件

责任编辑:韩峰

基金项目:国家自然科学基金(11375081)

收稿日期:2015-07-29

修改稿日期:2015-09-06

网络出版日期:2016-01-08

作者单位    点击查看

吴立恒:聊城大学物理科学与信息工程学院, 山东 聊城 252059
王明红:聊城大学物理科学与信息工程学院, 山东 聊城 252059

联系人作者:吴立恒(wulihenglctu@163.com)

备注:吴立恒(1980—),男,硕士研究生,主要从事微波理论与技术,物理教学理论等方面的研究。

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引用该论文

Wu Liheng,Wang Minghong. Reflecting Splitter Based on Photonic Crystal U-Shaped Resonators[J]. Laser & Optoelectronics Progress, 2016, 53(2): 022301

吴立恒,王明红. 带有光子晶体U-型谐振器的反射式分束器[J]. 激光与光电子学进展, 2016, 53(2): 022301

被引情况

【1】张信祥,陈鹤鸣. 光子晶体偏振分束器的设计与性能分析. 激光与光电子学进展, 2017, 54(1): 11301--1

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