Large-Scale Integrated Multi-Lines Optical Phased Array Chip

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...

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Bibliographic Details
Published in:IEEE photonics journal 2020-08, Vol.12 (4), p.1-8
Main Authors: Zhang, Lan-Xuan, Li, Ying-Zhi, Tao, Min, Wang, Yu-Bing, Hou, Yu, Chen, Bo-Song, Li, Yu-Xuan, Qin, Li, Gao, Feng-Li, Luo, Xian-Shu, Lo, Guo-Qiang, Song, Jun-Feng
Format: Article
Language:English
Subjects:
Gratings
Laser beams
longitudinal scanning
Optical device fabrication
Optical switches
Optical waveguides
Phased arrays
Scanning
Switches
Tuning
tuning efficiency
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Summary: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° when the wavelength ranges from 1520 nm to 1570 nm, and the eight-lines one reaches 19.04° with wavelength range of 1520 nm-1540 nm. We greatly improve the wavelength tuning efficiency for longitudinal scanning.
ISSN:1943-0655
1943-0655
1943-0647
DOI:10.1109/JPHOT.2020.3001005