Impact Statement:In this paper, we integrate four OPAs on a single chip in order to overcome the limitation of small longitudinal beam emission scanning area obtained in a limited wavelen...Show More
Abstract:
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 se...Show MoreMetadata
Impact Statement:
In this paper, we integrate four OPAs on a single chip in order to overcome the limitation of small longitudinal beam emission scanning area obtained in a limited wavelength range. The scanning range of the whole chip is the splicing of four scanning ranges. Collectively, a large longitudinal scanning range can be obtained through individual OPA tunes the small wavelength range. We design and implement two different devices, achieve 28.54° (0.57°/nm) and 19.04° (0.95°/nm) beam steering range.
Abstract:
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.
Published in: IEEE Photonics Journal ( Volume: 12, Issue: 4, August 2020)
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