期刊
OPTICS LETTERS
卷 46, 期 12, 页码 2828-2831出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.426275
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资金
- National Key Research and Development Program of China [2019YFA0706301]
- Key Project in Broadband Communication and New Network of the Ministry of Science and Technology [2018YFB1801003]
- National Natural Science Foundation of China [61975242, U1701661, U2001601]
- Science Foundation of Guangzhou City [202002030103]
- Key Project for Science and Technology of Guangzhou City [201904020048]
- Science and Technology Planning Project of Guangdong Province [2019A1515010774]
By harnessing optical loss in a coupled high-Q resonators system, on-chip electromagnetically induced transparency (EIT) can be achieved, leading to fast and nonvolatile responses. This mechanism, demonstrated experimentally on chalcogenide coupled microring resonators in a monolithically integrated chip, provides a new perspective for tunable photonic devices.
Optical loss is generally perceived to be an adverse effect in integrated optics. Herein, in contrast, we propose a mechanism to harness the loss in a coupled high-Q resonators system to realize on-chip electromagnetically induced transparency (EIT). The increasing loss of one of the coupled resonators results in a difference in Q factor, leading to EIT generation. This optical loss-induced EIT is studied analytically using the coupled-mode theory and demonstrated experimentally in chalcogenide coupled microring resonators. By taking advantage of the chalcogenide phase change materials that feature exceptional optical property contrasts, we further demonstrate the loss-induced mechanism to realize fast and nonvolatile responses between the EIT state and the critical coupling state in a monolithically integrated chip. Our results provide a new perspective to harvest the negative loss effect of coupled resonators for tunable photonic devices, which might shed new light on the design ideology for on-chip slow-light optical components. (C) 2021 Optical Society of America
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