公开(公告)号：US20240035880A1

公开(公告)日：2024-02-01

申请号：US17934754

申请日：2022-09-23

Applicant: Lumentum Operations LLC

Inventor： Colin SMITH

IPC: G01J1/02 ,  G01J1/42

CPC classification number: G01J1/0295 ,  G01J1/4257 ,  G02B27/14

Abstract: In some implementations, an optical assembly includes an optical power monitor to receive a portion of an optical beam and to perform a measurement on the portion of the optical beam; an optical tap to tap the optical beam and provide the portion of the optical beam; and an optical element to allow the portion of the optical beam from the optical tap to propagate toward the optical power monitor, wherein the optical element includes an absorptive material to absorb light other than the portion of the optical beam that is propagated toward the optical power monitor.

公开(公告)号：US20210262862A1

公开(公告)日：2021-08-26

申请号：US16949715

申请日：2020-11-11

Applicant: Lumentum Operations LLC

Inventor： Colin SMITH ,  Adrian Perrin JANSSEN ,  Stuart CONLEY

IPC: G01J9/02 ,  G02B27/10 ,  G02B17/00

Abstract: An optical locker may include an assembly. The assembly may include a beam splitter, configured to split an input beam into at least three beams; an etalon having at least three regions, positioned so that each beam passes through a different region; a detector configured to measure output intensities, Tn, of the etalon for the beam; and a controller configured to determine a ratio, Ta/Tb, of the output intensities, wherein that ratio has a slope at the output intensities which is above a threshold, obtain a target frequency of the input beam, and determine an actual frequency of the input beam based on the target frequency and the ratio of the output intensities.