Affiliation:
1. Southeast University
2. South China Normal University
3. Jiaxing Research Institute Zhejiang University
Abstract
The thin film lithium niobate platform has shown its potential to support high-performance active and passive integrated photonic devices. Yet, due to the transparency of lithium niobate, it is not suitable for building a photodetector monolithically for conventional communication wavelengths. In this work, we demonstrate a high-speed photodetector on the thin film lithium niobate platform using hybrid integration of two-dimensional materials, i.e., black phosphorus. The black phosphorus and lithium niobate hybrid waveguide exhibit a high absorption coefficient of 1.56 dB/µm. The constructed metal-semiconductor-metal photodetector also presents a high responsivity of 2.64 A/W (at an input optical power of 25.1 µW). The 3-dB bandwidth of the device is as high as 1.97 GHz.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang
Natural Science Foundation of Zhejiang Province
Basic and Applied Basic Research Foundation of Guangdong Province
Natural Science Foundation of Jiangsu Province
Fundamental Research Funds for the Central Universities
Subject
Electronic, Optical and Magnetic Materials
Cited by
16 articles.
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