公开(公告)号：US12265260B2

公开(公告)日：2025-04-01

申请号：US17855110

申请日：2022-06-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hanchen Yu ,  Xiang Yin

IPC: G02B6/14 ,  G02B6/12 ,  G02B6/28

Abstract: An example optical fiber signal mode conversion apparatus includes a non-single-mode optical fiber and a single-mode optical fiber. The single-mode optical fiber forms, with the non-single-mode optical fiber, a first coupling region and a second coupling region along a signal transmission direction in the non-single-mode optical fiber, where an effective refractive index of a fundamental mode signal of the single-mode optical fiber in the first coupling region is equal to an effective refractive index of a signal in a first mode, the signal in the first mode is coupled to a fundamental mode channel of the single-mode optical fiber, and an effective refractive index of the fundamental mode signal of the single-mode optical fiber in the second coupling region is equal to an effective refractive index of a signal in a second mode.