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:
Sep. 02, 2003
Filed:
Oct. 27, 2000
Yoshiyuki Sakairi, Kanagawa, JP;
Takao Minami, Kanagawa, JP;
Ando Electric Co., Ltd., Kanagawa, JP;
Abstract
In a light wavelength dispersion measuring apparatus , three band-pass filters BPa to BPa are connected in parallel, three band-pass filters BPb to BPb are connected in parallel, and three phase comparators PCa to PCc are connected in parallel for making it possible to conduct phase difference measurement of the nth-order harmonics (n= ) at the same time, so that a wavelength dispersion calculator can calculate the wavelength dispersion values of the nth-order harmonics (n= ) at the same time. As a result, measurement time of measuring the wavelength dispersion characteristic in the light wavelength dispersion measuring apparatus can be shortened.