Tunable optical switch for DWDM systems

被引：3

作者：

Afting, S ^{[1
]}

Barabas, U ^{[1
]}

机构：

[1] Univ Fed Armed Forces, Inst Commun Engn, D-85577 Neubiberg, Germany

来源：

OPTICAL AND QUANTUM ELECTRONICS | 2002年 / 34卷 / 09期

关键词：

dense wavelength division multiplexing; SiGe; tunable filter;

D O I：

10.1023/A:1019966602917

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：

Characteristics of optical gratings on Si/SiGe heterostructures for switchable optical band-pass filters will be discussed. The grooves of the gratings have an angle of 45degrees to the propagation of light. The bandwidth can be as low as 0.2 nm. By reducing the refractive index of the SiGe layer due to injected free carriers it is possible to move the transmission band to lower wavelengths. In dense wavelength division multiplexing (DWDM) systems transmission channels can be selected by tuning the current. Therefore, the structure can be used as an electronic adjustable switch.

引用

页码：877 / 882

页数：6