Main > Photonics Research >  Volume 8 >  Issue 3 >  Page 03000375 > Article
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Accepted: Jan. 13, 2020

Posted: Jan. 13, 2020

Published Online: Feb. 26, 2020

The Author Email: Yeyu Zhu (yeyuz@clemson.edu)

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Yeyu Zhu, Siwei Zeng, Lin Zhu. Optical beam steering by using tunable, narrow-linewidth butt-coupled hybrid lasers in a silicon nitride photonics platform[J]. Photonics Research, 2020, 8(3): 03000375

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## Abstract

Chip-scale, tunable narrow-linewidth hybrid integrated diode lasers based on quantum-dot RSOAs at 1.3 μm are demonstrated through butt-coupling to a silicon nitride photonic integrated circuit. The hybrid laser linewidth is around 85 kHz, and the tuning range is around 47 nm. Then, a fully integrated beam steerer is demonstrated by combining the tunable diode laser with a waveguide surface grating. Our system can provide beam steering of 4.1° in one direction by tuning the wavelength of the hybrid laser. Besides, a wavelength-tunable triple-band hybrid laser system working at $～1$, $～1.3$, and $～1.55 μm$ bands is demonstrated for wide-angle beam steering in a single chip.