Adjustable MMI for dynamic on-chip monitoring based on nano-opto-electro-mechanical interaction

Feng Zhang; Kejian Zhu; Pengfei Sun; Tuo Li; Xiaofeng Zou; Kai Liu; Hongtao Man; Qi Song; Lang Zhou; Chen Li

doi:10.1117/12.2690156

17 August 2023 Adjustable MMI for dynamic on-chip monitoring based on nano-opto-electro-mechanical interaction

Feng Zhang, Kejian Zhu, Pengfei Sun, Tuo Li, Xiaofeng Zou, Kai Liu, Hongtao Man, Qi Song, Lang Zhou, Chen Li

Proceedings Volume 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023); 127572K (2023) https://doi.org/10.1117/12.2690156
Event: 3rd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2023), 2023, Kunming, China

Abstract

Energy efficiency and integration scale are two of the major challenges of current optical computing chips. To solve these problems, we propose for the first time a special multimode interference(MMI) and dynamic monitoring idea. The research of the device is based on finite element analysis. There is a nano-opto-electro-mechanical(NOEM) ratio controller in the upper left of the multimode waveguide. Most of the time, the device is in static mode with power-splitting-ratio(PSR) close to 0:100. The research shows that once the controller is started, the device enters dynamic mode with a PSR bigger than 5:95. The PSR is less than 0.36:99.64 in a selected static mode and up to 8.35:91.65 in dynamic mode. The change of PSR in dynamic mode is realized by adjusting distance between NOEM module and multimode waveguide. The footprint of the multimode waveguide is only 1.54×3.63μm² . Its minimum insertion loss(IL) is less than 0.2dB and has good process tolerance characteristics. The energy consumption of discontinuous monitoring based on the MMI is significantly lower than that of continuous monitoring. It is estimated that when duty cycle of the periodic monitoring module is 0.1 and 0.01, its monitoring energy consumption can be reduced by 70% and 97%, respectively. The MMI is expected to greatly promote the development of optical computing chips.

Citation Download Citation

Feng Zhang, Kejian Zhu, Pengfei Sun, Tuo Li, Xiaofeng Zou, Kai Liu, Hongtao Man, Qi Song, Lang Zhou, and Chen Li "Adjustable MMI for dynamic on-chip monitoring based on nano-opto-electro-mechanical interaction", Proc. SPIE 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023), 127572K (17 August 2023); https://doi.org/10.1117/12.2690156

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