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:
Mar. 25, 2014
Filed:
Mar. 22, 2012
Po-lung Tien, Hsinchu, TW;
Maria C. Yuang, Hsinchu, TW;
Hsing-yu Chen, Hsinchu, TW;
Jyehong Chen, Hsinchu, TW;
Po-Lung Tien, Hsinchu, TW;
Maria C. Yuang, Hsinchu, TW;
Hsing-Yu Chen, Hsinchu, TW;
Jyehong Chen, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
An optical wavelength division node includes an optical splitter, a plurality of optical circulators, and a colorless light source module. The optical splitter receives and splits a downstream signal light source into a first-path and a second-path signal light source. The optical circulator in a first-order position receives and transmits the first-path signal light source to an optical network unit in a first-order position, and receives a return signal and passes it to a next optical circulator, and finally the optical circulator in a last-order position receives the return signal and transmits it. The colorless light source module receives the second-path signal light source and the return signal transmitted by the optical circulator in a last-order position, and uses the second-path signal light source to modulate the return signal to generate an upstream signal light source to be transmitted to the optical line terminal by the optical splitter.