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:
Nov. 17, 2020
Filed:
Oct. 24, 2019
Kddi Corporation, Tokyo, JP;
Shota Ishimura, Fujimino, JP;
KDDI CORPORATION, Tokyo, JP;
Abstract
An optical receiver includes: a first combiner configured to output first combined light by combining local light of first polarization and signal light of second polarization; a converter configured to convert the first combined light to a first electric signal; a converter configured to covert a component of the first combined light that has passed through a first polarizer to a second electric signal; a converter configured to convert a component of the first combined light that has passed through a wave plate and a polarizer to a third electric signal; a divider configured to output a fourth electric signal and a fifth electric signal by branching the first electric signal; subtractors configured to subtract the fourth electric signal from the second electric signal and the fifth electric signal from the third electric signal.