公开(公告)号：US11733462B2

公开(公告)日：2023-08-22

申请号：US17663135

申请日：2022-05-12

Applicant: II-VI Delaware, Inc.

Inventor： Chunyan Jia ,  Peng Xiao ,  Zhihua Song ,  Yingying Liu ,  Jin'E Hua

IPC: G02B6/35 ,  G02B6/26

CPC classification number: G02B6/3594 ,  G02B6/266 ,  G02B6/3596

Abstract: The present disclosure provides a MEMS-based variable optical attenuator (VOA) array, sequentially including an optical fiber array, a micro-lens array, and a MEMS-based micro-reflector array to form a VOA array having several optical attenuation units. The MEMS-based micro-reflectors can change the propagation direction of a beam, causing a misalignment coupling loss to the beam and thereby achieving optical attenuation, with a broad range of dynamic attenuation, low polarization dependent loss and wavelength dependent loss, good repeatability, short response time (at the millisecond level), etc. Arrayed device elements are used as assembly units of the present disclosure, and the assembly of arrayed elements facilitates tuning in batches. Accordingly, automation levels are improved, and the production costs are reduced.

公开(公告)号：US20210294037A1

公开(公告)日：2021-09-23

申请号：US17204768

申请日：2021-03-17

Applicant: II-VI Delaware, Inc.

Inventor： Li WU ,  Yunbing Xu ,  Weimin Chen ,  Yuping Wu ,  Danping Wei ,  Peng Xiao ,  Yang Li ,  Hongming Cai

IPC: G02B6/293 ,  G02B6/27 ,  G02B6/10 ,  F21V8/00 ,  G02B6/12

Abstract: A single-ended output circulator includes a three-core optical fiber head having first, second, and third optical fiber cores; a walk-off crystal having a first surface facing towards the second end of the three-core optical fiber head tube and a second surface facing away from the second end of the three-core optical fiber head tube; a plurality of half-wave plates each having a first surface coupled to the second surface of the walk-off crystal and a second surface facing away from the second surface of the walk-off crystal; a collimating lens having a first end and a second end; a reflection mirror configured to reflect light beams from the collimating lens; an optical prism between the collimating lens and the reflection mirror and configured to transmit a light beam along a propagation direction according to a polarization direction of the light beam; and a polarization rotator.