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Optimization of silicon-on-insulator based optical switch using tapered waveguides

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Abstract

Optimized 2×2 switches based on silicon-on-insulator (SOI) were demonstrated. In the design, single mode rib waveguides and multimode interferences (MMIs) are connected by tapered waveguides to reduce the mode coupling loss between the two types of waveguides. The average insertion loss of the switches is about −16.9 dB and the excess loss of one is measured of −1.3 dB. The worst crosstalk is larger than 25 dB. Experimental results indicate that some of the main characteristics of optical switches are improved in the modified design, which is according with theoretic analysis. The novel design can be used to improve the characteristics of optical switch matrixes based on 2×2 switch units.

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Authors and Affiliations

  1. State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, China

    Li Zhi-yong, Chen Shao-wu & Yu Jin-zhong

Authors
  1. Li Zhi-yong
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  2. Chen Shao-wu
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  3. Yu Jin-zhong
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Corresponding author

Correspondence to Li Zhi-yong.

Additional information

This work was supported in part by the National Science Foundation of China (Grant No.60577044) and the Ministry of Science and Technology “973” Plan (No.2006CB302803)

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Li, Zy., Chen, Sw. & Yu, Jz. Optimization of silicon-on-insulator based optical switch using tapered waveguides. Optoelectron. Lett. 3, 326–328 (2007). https://doi.org/10.1007/s11801-007-7008-0

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  • DOI: https://doi.org/10.1007/s11801-007-7008-0

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