Design and analysis of optical coupler with a stable splitting ratio based on cascaded multistage directional couplers

被引：4
|
作者：
Chang, Shih-Jung [1 ]
Liu, Kuo-Wei [1 ]
机构：
[1] Ming Chuan Univ, Dept Elect Engn, Tao Yuan 333, Taiwan
来源：
OPTICAL ENGINEERING | 2012年 / 51卷 / 09期
关键词：
integrated optics; optical directional couplers; optical waveguide components; planar lightwave circuit; RIB WAVE-GUIDES; INTERLEAVE FILTER; PLANAR LIGHTWAVE; WAVELENGTH; COMPACT;
D O I：
10.1117/1.OE.51.9.094603
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An optical 3 dB coupler based on cascaded three-stage directional couplers is proposed. The optical coupler with a finite impulse response on optical power is able to provide a stable 50% splitting ratio. The influence of the waveguide gap, width of each waveguide, and coupling length on the performance of the proposed coupler is illustrated. The numerical analysis and results show the reported coupler with less sensitivity to such fabrication variations. The proposed optical coupler could also be designed with any stable splitting ratio for optical communication applications. (c) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.9.094603]
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页数：4
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