A frequency-selective circulator via mode coupling between surface waveguide and resonators

A. Q. Liu; E. H. Khoo; T. H. Cheng; E. P. Li; J. Li

doi:10.1063/1.2830838

A frequency-selective circulator via mode coupling between surface waveguide and resonators

A. Q. Liu, E. H. Khoo, T. H. Cheng, E. P. Li, J. Li

Research output: Journal article publication › Journal article › Academic research › peer-review

10 Citations (Scopus)

Abstract

In this letter, a frequency-selective circulator via mode coupling between a circular photonic crystal (CPC) surface waveguide and resonator systems is developed. The curve surface waveguide is formed by reducing the outermost rods radii. It has a transmission efficiency of 95% when the surface concentric distance is reduced by half. The resonator system, which consists of rod(s) are placed at each of the CPC perpendicular axis. Using optimized resonator physical parameters, selected frequencies are dropped at different locations with efficiency of 97%. It is suggested that several circulators can be cascaded to build a large scale frequency-selective multiplexing system.

Original language	English
Article number	021119
Journal	Applied Physics Letters
Volume	92
Issue number	2
DOIs	https://doi.org/10.1063/1.2830838
Publication status	Published - Jan 2008
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2830838

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AB - In this letter, a frequency-selective circulator via mode coupling between a circular photonic crystal (CPC) surface waveguide and resonator systems is developed. The curve surface waveguide is formed by reducing the outermost rods radii. It has a transmission efficiency of 95% when the surface concentric distance is reduced by half. The resonator system, which consists of rod(s) are placed at each of the CPC perpendicular axis. Using optimized resonator physical parameters, selected frequencies are dropped at different locations with efficiency of 97%. It is suggested that several circulators can be cascaded to build a large scale frequency-selective multiplexing system.

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A frequency-selective circulator via mode coupling between surface waveguide and resonators

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