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, 2007
Filed:
Feb. 04, 2004
Applicant:
René E. Kristiansen, Brønshøj, DK;
Inventor:
René E. Kristiansen, Brønshøj, DK;
Assignee:
Tellabs Denmark A/S, Ballerup, DK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 14/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a router which may be used for amplification of a bidirectional optical signal using a single optical amplifier. An advantageous embodiment of the invention comprises two 3 dB couplers which are serially connected via a delay element. According to the embodiment, the delay element comprises a difference in distance ΔL between the two optical branches which connect the two 3 dB couplers.