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24 November 2023 Wavelength beam combining of 850 nm and 2000 nm lasers based on an adiabatic optical coupler
Xiangeng Wang, Yanwei Huang, Shuqing Lin, Yanfeng Zhang, Siyuan Yu, Ruijun Wang
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Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 1293543 (2023) https://doi.org/10.1117/12.3007888
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China
Abstract
Wavelength beam combing of semiconductor lasers on a photonic integrated circuit (PIC) provides a simple, robust architecture to realize on-chip light sources for ultrabroadband wavelength division multiplexing (WDM) and multi-species trace gas spectroscopy. Several conventional device structures can be used to realize on-chip wavelength beam combing, such as multimode interferometers (MMIs), arrayed waveguide gratings (AWGs) and Mach-Zehnder interferometer (MZI) devices. However, the bandwidth of these beam combiners is quite limited, usually less than 100 nm. Besides, the insertion loss of these combiners is relatively high. On-chip wavelength beam combiners with a low insertion loss and a bandwidth of a few hundred of nanometers should be further developed. Here we demonstrate low-loss wavelength beam combing of two lasers with a wavelength spacing more than 1000 nm based on an adiabatic silicon nitride coupler. The transmission loss from the cross input to the bar output is around -1.2dB in the 1990 nm to the 2060 nm wavelength range. The transmission loss from the bar input to the bar output is -0.86dB in the 830 nm to the 870 nm wavelength range.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Xiangeng Wang, Yanwei Huang, Shuqing Lin, Yanfeng Zhang, Siyuan Yu, and Ruijun Wang "Wavelength beam combining of 850 nm and 2000 nm lasers based on an adiabatic optical coupler", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 1293543 (24 November 2023); https://doi.org/10.1117/12.3007888
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KEYWORDS
Silicon nitride
Beam combiners
Waveguides
Photonic integrated circuits
Design and modelling
Optical communications
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