Hollow core fiber to single mode fiber connector
By employing techniques such as thermal expansion core treatment, graded refractive index multimode fiber, and microlenses, the problems of insertion loss and return loss in the connection of hollow-core fiber and single-mode fiber have been solved, achieving high-performance connection with low loss and high return loss, which is suitable for future high-speed communication and data center networks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
- Filing Date
- 2024-12-13
- Publication Date
- 2026-06-16
AI Technical Summary
Existing technologies struggle to achieve low insertion loss and high return loss connections between hollow-core and single-mode fibers, especially in future high-speed communication and data center networks, where traditional fusion splicing/splitting solutions cannot simultaneously meet these requirements.
The mode field diameter conversion and adaptation are achieved by using optical elements such as thermal expansion core treatment, graded refractive index multimode fiber or custom microlens, and by using bevels and anti-reflection coatings on the surface of the optical elements, combined with microlens and shell structure, to achieve coupling between HCF and SMF.
It achieves high-performance connection with low insertion loss and high return loss between hollow fiber and single-mode fiber, meets the 50 dB return loss requirement, and optimizes mode field diameter matching.
Smart Images
Figure CN122218890A_ABST