Waveguide grating coupler comprising a vertical taper region
By designing a vertical grating coupler with a large beam waist and long grating elements, the problem of requiring additional optical devices for beam manipulation in the prior art has been solved, enabling long-distance beam manipulation and simplifying manufacturing, making it suitable for a variety of optical applications.
Patent Information
- Application Number
- CN202480081576.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-12-21
- Filing Date
- 2024-12-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing grating couplers are typically designed with short focal lengths and small beam waists, which necessitates additional, expensive, and complex bulk optics to achieve beam manipulation. Furthermore, the manufacturing process is complex, increasing costs and difficulty.
Design a vertical grating coupler with a large beam waist and long grating elements. By forming the grating elements in the top stripe of the double-striped waveguide, the optical signal propagates only in the bottom stripe, and the Gaussian shape of the beam is achieved by slowly increasing the scattering intensity, reducing the need for external optics.
It achieves an operating range of tens of meters for the beam, reduces reliance on additional optical components, simplifies the manufacturing process, and is suitable for optical phased array applications such as LiDAR, broadcasting, space exploration communications, satellite communications, and human-machine interfaces.
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Abstract
Citation Information
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