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:
Mar. 03, 2026
Filed:
Dec. 15, 2020
Ntt, Inc., Tokyo, JP;
Shigeru Kanazawa, Musashino, JP;
Takahiko Shindo, Musashino, JP;
Meishin Chin, Musashino, JP;
Yasuhiko Nakanishi, Musashino, JP;
NTT, Inc., Tokyo, JP;
Abstract
The optical loss of the output light of the first light source transmitted through the optical multiplexer is suppressed. An optical transmitter includes: a first light source; one or more second light sources having mutually different wavelengths and each having a wavelength different from that of the first light source; an optical multiplexer that transmits output light from the first light source from a first end surface to a second end surface facing the first end surface, causes the output light to reflect on a reflecting mirror formed on the second end surface, transmits output light from the second light source through a wavelength filter formed on the first end surface, causes the output light to reflect on the reflecting mirror, and multiplexes the output light; and a first monitor PD for monitoring optical power with a part of the output light from the first light source.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile