The nature of spurious mode suppression in extended FSR microring multiplexers

被引：30
作者：
Schwelb, Otto [1 ]
机构：
[1] Concordia Univ, Dept Elect & Comp Engn, Montreal, PQ H3G 1M8, Canada
来源：
OPTICS COMMUNICATIONS | 2007年 / 271卷 / 02期
基金：
加拿大自然科学与工程研究理事会;
关键词：
microring resonator; add/drop multiplexer; FSR extension;
D O I：
10.1016/j.optcom.2006.10.053
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A systematic approach to the design of extended free spectral range (FSR) series coupled microring multiplexers is described. The aim is to achieve large extension ratios and adequate suppression of the spurious interstitial modes, while moderating radiation enhancing ring diameter reduction as much as possible. Computer simulated results of the transmission and group delay characteristics are presented together with a universal plot for spurious mode suppression vs. relative ring diameter reduction. The significance of closely spaced twin resonances in the extended stopband is recognized. The effect of loss on filter performance, in the passband and in the extended stopband, is also briefly discussed. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：424 / 429
页数：6
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