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:
Oct. 13, 2026
Filed:
Apr. 19, 2021
Ntt, Inc., Tokyo, JP;
Atsushi Kanda, Musashino, JP;
Yasuhiko Nakanishi, Musashino, JP;
Toshihide Yoshimatsu, Musashino, JP;
Masahiro Nada, Musashino, JP;
NTT, Inc., Tokyo, JP;
Abstract
A light receiving element of the present disclosure adopts a configuration in which a path of a return current is minimized, and achieves excellent high-frequency transmission characteristics. In the light receiving element of the present disclosure, not only a signal path of a high-frequency electric signal processed by an optical receiving circuit but also a path of a return current returning through a ground side are straightened. A return current flowing in a direction opposite to a high-frequency signal from a PD flows in a ground pattern formed on a lower surface of the PD, which is in contact with ground potential of a PD sub-mount. The ground pattern on the lower surface of the PD realizes a flat high-frequency transmission characteristic, and in a multi-channel PD array, unnecessary resonance and radiation noise are suppressed, and inter-channel crosstalk is effectively reduced.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile