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. 02, 2018
Filed:
Jun. 02, 2015
National Institute of Information and Communications Technology, Nukui-Kitamachi, Koganei-shi, Tokyo, JP;
Takahide Sakamoto, Koganei, JP;
Abstract
To realize collective measurement of ultrawide-band optical signals which have exceeded an electrical band limit. This photodetection device () comprises: a time-delay adjustment means () into which is input an optical signal that is a detection object; an optical frequency comb generator () that generates an optical frequency comb; a photomixer () that photomixes optical signal series which are sequentially output from the time delay adjustment means () and which were subjected to time adjustment, and the optical frequency comb signal which is output from the optical frequency comb generator (); and a photodetector () that detects the mixed signal output from the photomixer (). The time delay adjustment means () performs time adjustment on the optical signal series so that each of the time adjusted optical signal series is photomixed with the optical frequency comb at different timings in the photomixer ().