公开(公告)号：US20210072077A1

公开(公告)日：2021-03-11

申请号：US17002970

申请日：2020-08-26

Applicant: EXFO Inc.

Inventor： Nelu RADU

IPC: G01J1/44

Abstract: There is provided an optical power measurement method, an offset calibration method and an optical power meter that is adapted to apply the offset calibration method. The optical power measurement method, the offset calibration method and the optical power meter are characterized in that two temperature sensors are used for more accurate predictions of the optical power offset. A first temperature sensor is positioned to read a temperature of the photodiode and a second temperature sensor is positioned to read a temperature of the PCB ground plane.