Patent · US Active

Optical module and control method of controlling center wavelength of optical filter

US10659154B2 · kind B2 · utility

5Cited by
1References
14Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 30, 2019
Grant dateMay 19, 2020
Priority date—
Expiry dateMay 30, 2039

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B6/4271
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

An optical module has an optical amplifier that amplifies an optical signal in which multiple wavelengths are multiplexed, an optical demultiplexer that separates the multiple wavelengths from the optical signal having been amplified by the optical amplifier, a first photodetector that monitors the optical signal at an input side of the optical amplifier, a second photodetector that monitors each of the multiple wavelengths at an output side of the optical demultiplexer, and a control circuit that controls a center wavelength of a filter of the optical demultiplexer based upon a first output from the first photodetector and a second output from the second photodetector.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.