All-photon non-volatile multi-level optical switch based on phase change material

Jiapeng Sun; Hanyang Li; Yuhao Zhang; Yu Zhang; Zhihai Liu

doi:10.1117/12.2662576

12 April 2023 All-photon non-volatile multi-level optical switch based on phase change material

Jiapeng Sun, Hanyang Li, Yuhao Zhang, Yu Zhang, Zhihai Liu

Proceedings Volume 12565, Conference on Infrared, Millimeter, Terahertz Waves and Applications (IMT2022); 1256525 (2023) https://doi.org/10.1117/12.2662576
Event: Conference on Infrared, Millimeter, Terahertz Waves and Applications (IMT2022), 2022, Shanghai, China

Abstract

Multi-level optical switches play an important role in all-photon communication networks. In this paper, we demonstrate an all-photonic non-volatile, quasi-continuous, multi-level optical switch which based on phase change material (PCM, Ge₂Sb₂Te₅) and fiber micro-structure. With the help of 793nm CW laser and 532nm nanosecond pulse laser, this all-photon multistage optical switch can be operated repeatedly in six switching states. In multi-stage modulation, writing is realized by a 532 nm nanosecond pulsed laser with pulse energy of 1.426 mJ, and erasing is realized by a 793 nm CW laser with pulse powers from 4.2 to 9.6 mW. The experiment shows the optical switch has the advantages of high optical contrast (about 38%), repeatability and non-volatile (0.2dB). Hopefully, the all-photonic optical switch presented in this paper provides insights on optical computing and lays some experimental basis for all-photon information transmission.

Citation Download Citation

Jiapeng Sun, Hanyang Li, Yuhao Zhang, Yu Zhang, and Zhihai Liu "All-photon non-volatile multi-level optical switch based on phase change material", Proc. SPIE 12565, Conference on Infrared, Millimeter, Terahertz Waves and Applications (IMT2022), 1256525 (12 April 2023); https://doi.org/10.1117/12.2662576

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