Extreme narrow photonic passbands generated from defective two-segment-connected triangular waveguide networks

In this paper, we investigate the optical transmission properties of perfect and defective two-segment-connected tri- angular waveguide networks （2SCTWNs） and find that after introducing defects in networks, many groups of transparent extreme narrow photonic passbands （ENPPs） will be created in the...

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Bibliographic Details
Published in:Chinese physics B 2014-04, Vol.23 (4), p.292-299
Main Author: 汤振兴 杨湘波 卢剑 刘承宜
Format: Article
Language:English
Subjects:
Defects
Networks
Optical switching
Photonics
Spectra
Switching theory
Unit cell
Waveguides
三角形
光传输特性
光子
波导
缺陷
网络设备
连接
通带
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Summary:In this paper, we investigate the optical transmission properties of perfect and defective two-segment-connected tri- angular waveguide networks （2SCTWNs） and find that after introducing defects in networks, many groups of transparent extreme narrow photonic passbands （ENPPs） will be created in the middle of the transmission spectra, the number for each group and the group number of ENPPs can he adjusted by the matching ratios of waveguide length （MRWLs）, the number of defects, and the number of unit cells of 2SCTWNs. The influences of MRWL, number of defects, and number of unit cells on the number, width, and position of these ENPPs are researched and a series of quantitative rules and prop- erties are obtained. It may be useful for the designing of high-sensitive optical switches, wavelength division multiplexers, extreme-narrowband filters, and other correlative waveguide network devices.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/4/044207