Glass couplers for photonic integrated circuits
Glass couplers in PICs address inefficiencies in optical coupling and scalability by reducing separation between waveguides, enhancing fan-out and integration, and supporting high-density interconnects.
WO2026117579A1 Publication Date: 2026-06-04LIGHTMATTER INC
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Patent Information
- Application Number
- PCT/US2025/057085
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-11-26
- Filing Date
- 2025-11-25
- Publication Date
- 2026-06-04
AI Technical Summary
Technical Problem
Conventional coupling approaches in photonic integrated circuits (PICs) are inadequate for high data rate and small form factor applications, leading to inefficiencies in optical coupling, fan-out capabilities, and scalability issues.
Method used
The development of glass couplers that facilitate optical fan-out by reducing the separation between glass and PIC waveguides, enabling evanescent coupling and decoupling electrical and optical paths, and supporting tight-pitch, high-density interconnects.
Benefits of technology
Improves coupling efficiency, fan-out capabilities, and scalability, while simplifying integration and reducing optical losses, footprint, and manufacturing costs.
✦ Generated by Eureka AI based on patent content.
Abstract
Described herein are fiber-connection structures for photonic integrated circuits (PICs). These fiber connection structures enable efficient optical coupling between integrated waveguides and corresponding optical fibers by facilitating reliable edge coupling. The fiber-connection designs developed by the inventor improve upon conventional approaches by increasing fan-out fiber capability, coupling efficiency and scalability. A photonic package comprises a substrate, a PIC, an application-specific integrated circuit (ASIC) and a glass coupler. The PIC is attached to the substrate and comprises a PIC waveguide having an end adjacent an edge of the PIC. The ASIC is attached to the PIC. The glass coupler is attached to the PIC and comprises a glass waveguide optically coupled to the PIC waveguide.
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