期刊
IEEE PHOTONICS JOURNAL
卷 12, 期 4, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOT.2020.3001005
关键词
longitudinal scanning; tuning efficiency
资金
- National Key R&D Program of China [2016YFE0200700]
- National Natural Science Foundation of China [61627820, 61934003]
We design and integrate four optical phased arrays (OPAs) in a single chip. Each OPA possesses different output grating period. Furthermore, we use optical switches to select one or more OPAs for beam scanning. We demonstrate the longitudinal scanning by tuning the laser wavelength. The experimental results show that the scanning range of the four-lines chip reaches 28.54 degrees when the wavelength ranges from 1520 nm to 1570 nm, and the eight-lines one reaches 19.04 degrees with wavelength range of 1520 nm-1540 nm. We greatly improve the wavelength tuning efficiency for longitudinal scanning.
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