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. 09, 2001
Filed:
Mar. 16, 1998
Takeo Osaka, Yokohama, JP;
Shin-ichirou Harasawa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A circulator guides wavelength multiplexed light that is received from a main transmission path to a 1st fiber grating. The 1st fiber grating reflects light of wavelength &lgr;,Wavelength multiplexed light that has passed through the 1st fiber grating is guided to a 2nd fiber grating. The 2nd fiber grating reflects light of wavelength &lgr;n. The circulator guides the signal light that has been reflected from the 1st and 2nd fiber gratings to a branch transmission path. The length of the transmission path between the 1st and 2nd fiber gratings is determined based on the transmission rate or frequency of the signal that is transmitted using light of wavelength &lgr;n.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile