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:
Apr. 25, 2023
Filed:
May. 13, 2020
Nec Corporation, Tokyo, JP;
Manabu Arikawa, Tokyo, JP;
Toshiharu Ito, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A receiving optical system control device according to the present invention has: a light intensity calculation means for calculating, from a reception signal acquired by receiving, for each of plurality of mode light beams which are of the incident optical beams and which have been coupled to a plurality of propagation modes of the optical transmission medium by an optical system provided with a variable mechanism, the light intensity of each of the mode light beams; an optical phase calculation means for calculating the optical phase of each of the mode light beams from the reception signal; a relative phase calculation means for calculating the relative phase between the plurality of mode light beams from the optical phases; and a control amount calculation means for calculating the control amount of the variable mechanism from the light intensity and the relative phase.