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2x3 photonic switch in SiGe for 1.55 um
Chen Zhiwen
Sun Yat-Sen University
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Funding: none
Opened online:15 February 2006
Accepted by: none
Citation: Chen Zhiwen.2x3 photonic switch in SiGe for 1.55 um[OL]. [15 February 2006] http://en.paper.edu.cn/en_releasepaper/content/5237
 
 
A silicon-based photonic switch is proposed and simulated based on multimode interference (MMI) principle and free-carrier plasma dispersion effect in silicon-germanium material. The proposed switch, which is designed for 1.55 um window operation is useful for DWDM optical networks. The switch consists of two input single-mode ridge waveguide ports, a MMI section, and three output single-mode ridge waveguide ports. In the MMI section, two index-modulation regions are placed to divert input optical signals from the two input ports to each of the three output ports. Switching characteristics is demonstrated theoretically by a beam propagation method for 1.55 um operation. The simulated results show that the insertion loss of the switch is less than 1.43 dB and the crosstalk is between -18 and -32.8 dB.
Keywords:Integrated optics; photonic switch; multimode interference
 
 
 

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