The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2020
Filed:
Nov. 10, 2017
Mitsubishi Electric Corporation, Tokyo, JP;
Daichi Koyama, Tokyo, JP;
Hidekazu Kodera, Isahaya, JP;
Yoshiya Sato, Tokyo, JP;
Tadayoshi Hata, Tokyo, JP;
Masaya Shimono, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;
Abstract
An optical axis adjustment method for an integrated optical module includes: measuring output currents by changing a wavelength of a light beam incident on a package; detecting, with first and second light receiving elements, light beams resulted from demultiplexing the incident light beam with first and second filters; detecting center wavelengths of a first light beam and a second light beam based on a change in the output currents in response to a change in the wavelength of the incident light beam; comparing the center wavelengths of the first light beam and the second light beam with design transmission wavelengths of the first filter and the second filter, and defining respective differences as a first wavelength deviation and a second wavelength deviation; and adjusting a position of the optical demultiplexer to make a total sum of the first wavelength deviation and the second wavelength deviation small.