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Non-blocking 2 × 2 switching unit based on nested silicon microring resonators with high extinction ratios and low crosstalks

  • Article
  • Optoelectronics & Laser
  • Published:
Chinese Science Bulletin

Abstract

In this paper, we propose and demonstrate a 2 × 2 optical Benes switching unit based on two nested silicon microring resonators (MRRs) monolithically integrated on a silicon-on-insulator (SOI) wafer. High extinction ratios (ERs) of about 44.7/38.0 dB and low crosstalk values of about −37.5/−45.2 dB at cross/bar states are obtained with the fabricated device. The operation principle is theoretically studied and the switching function is verified by system demonstration experiments with 10 and 12.5 Gb/s non-return-to-zero (NRZ) signals. The switching speed on the order of gigahertz based on free carrier effect in silicon is also experimentally demonstrated.

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Acknowledgments

This work was supported in part by the National Natural Science Foundation of China (61125504 and 61235007), in part by MoE Grant (20110073110012), and in part by Minhang Talent Program.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

    Jiayang Wu, Xinhong Jiang, Ting Pan, Pan Cao, Liang Zhang, Xiaofeng Hu & Yikai Su

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  1. Jiayang Wu
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  2. Xinhong Jiang
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  3. Ting Pan
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  4. Pan Cao
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  5. Liang Zhang
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  6. Xiaofeng Hu
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  7. Yikai Su
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Corresponding author

Correspondence to Yikai Su.

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SPECIAL TOPIC: All-Optical Signal Processing

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Wu, J., Jiang, X., Pan, T. et al. Non-blocking 2 × 2 switching unit based on nested silicon microring resonators with high extinction ratios and low crosstalks. Chin. Sci. Bull. 59, 2702–2708 (2014). https://doi.org/10.1007/s11434-014-0406-3

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  • DOI: https://doi.org/10.1007/s11434-014-0406-3

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