| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Electro-Optically Switchable Optical True Delay Lines of Meter-Scale Lengths Fabricated on Lithium Niobate on Insulator Using Photolithography Assisted Chemo-Mechanical Etching |
| Jun-xia Zhou1,2, Ren-hong Gao3,4, Jintian Lin3,5*, Min Wang1,2, Wei Chu1,2, Wen-bo Li3,4, Di-feng Yin3,4, Li Deng1,2, Zhi-wei Fang1,2, Jian-hao Zhang3,4, Rong-bo Wu3,4and Ya Cheng1,2,3,4,5,6,7* |
1State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
2XXL—The Extreme Optoelectromechanics Laboratory, School of Physics and Electronics Science, East China Normal University, Shanghai 200241, China
3State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
4University of Chinese Academy of Sciences, Beijing 100049, China
5Collaborate CAS Center for Excellence in Ultra-intense Laser Science, Shanghai 201800, China
6Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
7Shanghai Research Center for Quantum Sciences, Shanghai 201315, China
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| Cite this article: |
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Jun-xia Zhou, Ren-hong Gao, Jintian Lin et al 2020 Chin. Phys. Lett. 37 084201 |
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Abstract 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 $\sim 0.03$ dB/cm for waveguide lengths well above 100 cm.
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Received: 28 June 2020
Published: 09 July 2020
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| PACS: |
42.82.-m
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(Integrated optics)
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42.79.-e
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(Optical elements, devices, and systems)
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| Fund: Supported by the National Key R&D Program of China (Grant No. 2019YFA0705000), the National Natural Science Foundation of China (Grant Nos. 11734009, 61590934, and 11874375), the Strategic Priority Research Program of CAS (Grant No. XDB16030300), and the Key Project of the Shanghai Science and Technology Committee (Grant No. 17JC1400400). |
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