Transmission Spectra and Filter Property Analysis of Superconductor-medium Fibonacci Photonic Crystal

LIU Wan-guo; PAN Feng-ming

doi:10.3788/fgxb20133409.1250

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Transmission Spectra and Filter Property Analysis of Superconductor-medium Fibonacci Photonic Crystal

更新时间：2020-08-12

- Transmission Spectra and Filter Property Analysis of Superconductor-medium Fibonacci Photonic Crystal
- Chinese Journal of Luminescence Vol. 34, Issue 9, Pages: 1250-1257(2013)
- 作者机构：
  
  南京航空航天大学应用物理系,江苏南京,211100
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20133409.1250
  CLC： O436;O511
- Received：06 June 2013，
  
  Revised：09 July 2013，
  
  Published：10 September 2013
- 稿件说明：
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刘晚果, 潘风明. 超导-介质型Fibonacci光子晶体的透射谱与滤波特性分析[J]. 发光学报, 2013,34(9): 1250-1257

LIU Wan-guo, PAN Feng-ming. Transmission Spectra and Filter Property Analysis of Superconductor-medium Fibonacci Photonic Crystal[J]. Chinese Journal of Luminescence, 2013,34(9): 1250-1257
刘晚果, 潘风明. 超导-介质型Fibonacci光子晶体的透射谱与滤波特性分析[J]. 发光学报, 2013,34(9): 1250-1257 DOI： 10.3788/fgxb20133409.1250.

LIU Wan-guo, PAN Feng-ming. Transmission Spectra and Filter Property Analysis of Superconductor-medium Fibonacci Photonic Crystal[J]. Chinese Journal of Luminescence, 2013,34(9): 1250-1257 DOI： 10.3788/fgxb20133409.1250.

摘要

目前广泛应用的可调谐光滤波器通过调节干涉腔长度来实现波段的调谐。它需要制备高反射悬浮膜

而悬浮膜在驱动电压的影响下其运动会受到限制

且较窄的透射峰与较大的调谐范围二者不可兼得。为此

本文将光子晶体中的其中一种介质以超导材料取而代之。基于超导理论

利用传输矩阵法对一维超导-介质型Fibonacci光子晶体的透射谱进行了计算

讨论了厚度、折射率以及温度对透射谱的影响。结果表明

受光子带隙的影响

超导体的频率禁带中会出现一系列的通带;Fibonacci等级的增加会导致第一透射峰更加尖锐;介质层光学厚度增大、超导层厚度减小、温度升高均能使透射峰向长波方向移动。最后

在透射谱分析的基础上给出了结构为S

)

的滤波特性

兼顾透射峰半高宽与可调谐范围

确定了滤波器的可调谐波段

在无需调整任何几何参数的条件下实现了温控调谐。

Abstract

The tunable optical filter is widely used to tuned the waveband by adjusting interference cavity length. It needs to prepare high reflective suspended membrane. However

the moving of suspended membrane is restricted under the influence of the driving voltage. The narrow transmission peak and the large tuning range are hard to be satisfied at the same time. Therefore

one of the media in photonic crystal is replaced with superconductor material in this paper. Based on superconducting theory the transmission spectra of one-dimensional superconductor-medium Fibonacci photonic crystal are calculated by applying transfer matrix method. The effect factors on transmission spectra of parameter such as Fibonacci level

refractive index of medium layer

thicknesses of medium and superconductor layer

temperature are discussed. The results show that a serious of passing band appears at the forbidden band of superconductor because of the influence of photonic band gap. The first transmission peak becomes sharper with the increasing of Fibonacci level. The transmission spectra move towards the long wave direction when the optical thickness of medium layer increases

the thickness of superconductor layer decreases and temperature rises. At last

based on analysis of spectra

the filter property of structure expressed as is given. Besides

the tunable band of filter is determined on condition that the half-width and tunable range are both considered

and temperature-controlled tuning is achieved without adjusting any dimension parameters.

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Keywords

references

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