T/HBAS 032-2022 Vertical-Coupled Optical Fiber Array for Silicon Photonic Chip

Scope

Scope: This document specifies the terms and definitions, classification and models, requirements, test methods, inspection rules, and marking, packaging, transportation, and storage for vertical-coupled fiber arrays used in silicon optical chips. This document applies to the design, production, and inspection of vertical-coupled fiber arrays used in silicon optical chips. Main technical content: Fiber arrays generally use 4-core, 8-core, and 12-core fiber ribbons, combined with a substrate engraved with V grooves made of all-quartz material, to assemble into an important coupling component between optical devices and fibers. In existing technologies, the coupling between fiber arrays and lasers or detectors used in active optical modules often adopts a horizontal coupling method, but horizontal coupling has high insertion loss, mode conversion loss, and low coupling efficiency. Therefore, the vast majority of applications require vertical coupling. Wuhan Yilutong Technology Co., Ltd. has provided a fiber array for vertical coupling. Main technical scheme: By assembling a multi-core fiber connector, fibers, fiber positioning components, and positioning fixtures, the two ends of the fiber are respectively a straight end and a curved end. The straight end of the fiber is connected to the multi-core fiber connector, and the curved end of the fiber is fixed by the fiber positioning components and bent and fixed within the positioning fixtures. Its advantages are: (1) It can realize a small-sized fiber array with a bending angle of about 98° in the optical transmission direction, which can effectively reduce the number of devices in the optical path and greatly reduce the optical loss in the optical path; (2) Its structural design is simple and reasonable, with a small volume and a simple and controllable packaging process. It effectively expands the coupling application of fiber arrays with different active devices and achieves good results.

Development Information

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