期刊
CHINESE PHYSICS LETTERS
卷 37, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0256-307X/37/8/084201
关键词
42; 82; -m; 42; 79; -e
资金
- National Key RAMP
- D Program of China [2019YFA0705000]
- National Natural Science Foundation of China [11734009, 61590934, 11874375]
- Strategic Priority Research Program of CAS [XDB16030300]
- Key Project of the Shanghai Science and Technology Committee [17JC1400400]
Optical true delay lines (OTDLs) of low propagation losses, small footprints and high tuning speeds and efficiencies are of critical importance for various photonic applications. Here, we report fabrication of electro-optically switchable OTDLs on lithium niobate on insulator using photolithography assisted chemo-mechanical etching. Our device consists of several low-loss optical waveguides of different lengths which are consecutively connected by electro-optical switches to generate different amounts of time delay. The fabricated OTLDs show an ultra-low propagation loss of similar to 0.03 dB/cm for waveguide lengths well above 100 cm.
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