VCSEL with intra-cavity circular Bragg gratings for single-mode operation
Source abstract
Abstract
In this paper, we present the design and fabrication of a single-mode Vertical-Cavity Surface-Emitting Laser (VCSEL) incorporating circular Bragg gratings (CBGs). By periodically etching the surface of a half-cavity VCSEL surface into concentric rings, first-order Bragg gratings are formed in the lateral direction, providing an additional mechanism of optical confinement at the Bragg wavelength. To enable lasing, dielectric DBRs are evaporated on the top. We fabricated the device with a large oxidized aperture size of 11 μm. Experimental results demonstrate the impact of the CBG structure on mode selection and power convergence, with the proposed VCSEL achieving continuous single-mode operation and an output power exceeding 3.7 mW. Dynamic responses show that our device is highly promising for high-speed applications, particularly for transmission distances of up to 10 km.
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Research context
OpenAlex topics: Semiconductor Lasers and Optical Devices · Photonic and Optical Devices · Optical Network Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Electronics and Information Engineering, Suzhou University of Science and Technology 1 , Suzhou, Jiangsu 215000,
School of Information and Electronics, Beijing Institute of Technology 2 , Haidian District, Beijing 100081,
School of Information and Electronics, Beijing University of Posts and Telecommunications 3 , Haidian District, Beijing 100876,
Shenzhen Coming Light Optic-electric Co., Ltd. 4 , Shenzhen 518000,
Funding
National Natural Science Foundation of China （NSFC） · National Key Research and Development Program of China
References (33)
Show source-provided references
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