Wide stop-band filter consisting of multiresonator based on an optical directional coupler

被引：0
|
作者：
Furuta, Hirosuke [1 ]
Nishikawa, Kenji [2 ]
机构：
[1] Dept. Electronics Eng. Comp. Sci., Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0810, Japan
[2] Instrument Business Group, Advantest Corporation, 1-16-1 Fujimi-cho, Gyoda 361-0021, Japan
来源：
| 1600年 / JJAP, Tokyo, Japan卷 / 39期
关键词：
Integrated circuit layout - Optical communication equipment - Optical resonators - Optical waveguides - Waveguide couplers - Wavelength division multiplexing;
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学科分类号：
摘要：
Recently, the wavelength range of wavelength division multiplex (WDM) systems has been widening. Consequently, optical fibers require wide stop bands that can cover this range. Multiresonance filters can have flat pass bands and relatively sharp cutoff characteristics but have narrow stop bands because of the repeated appearance of resonance. In this paper, an optical fiber based on a directional coupler is discussed. It may be suitable for integrated optics because of its simple structure. The method of widening the stop band is also reported.
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