The design of wavelength selective directional coupler made of W-index waveguide for WDM

被引：0
|
作者：
Yun, JH [1 ]
Ra, KT [1 ]
Kim, PJ [1 ]
Kim, SD [1 ]
Lee, JG [1 ]
Kim, SB [1 ]
机构：
[1] Chosun Univ, Dept Elect Engn, Kwangju 501759, South Korea
来源：
OPTOELECTRONIC MATERIALS AND DEVICES II | 2000年 / 4078卷
关键词：
D O I：
10.1117/12.392165
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An optical waveguides spectral filter constructed with a W-index waveguide, supporting a dominant mode with nonzero cutoff frequency and a Step-index waveguide is proposed and analyzed. The proposed filter offers a spectral width on the order of one nanometer, considerably narrower than that provided by a filter made of two Step-index waveguides having the same transmission wavelength. The narrow spectral width is achieved by exploiting a relatively large slope difference between the dispersion characteristics of the W-index and Step-index waveguides constituting the filter. For an example case, transmission characteristic of the proposed filter with peak transmission at 1.55 mu m is calculated and compared with that of a corresponding filter made of two Step-index waveguides.
引用
收藏
页码：389 / 396
页数：8
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