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  • Received: Nov. 8, 2019

    Accepted: Jan. 13, 2020

    Posted: Jan. 13, 2020

    Published Online: Feb. 26, 2020

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

    DOI: 10.1364/PRJ.382852

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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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Photonics Research, Vol. 8, Issue 3, 03000375 (2020)

Optical beam steering by using tunable, narrow-linewidth butt-coupled hybrid lasers in a silicon nitride photonics platform

Yeyu Zhu*, Siwei Zeng, and Lin Zhu

Author Affiliations

  • Department of Electrical and Computer Engineering, Center for Optical Materials Science and Engineering Technologies, Clemson University, Clemson, South Carolina 29634, USA

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.

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