Granted Patent
Utility
US 6,456,409 · App. 09/906,195
Method and apparatus for extending fiber transmission distance with multiple pre-emphases in optically amplified DWDM system
Inventors:
Jianying Zhou, Richard A. Barry, Murat Azizoglu, Eric Swanson
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Jul 16, 2001
Inventors
Jianying Zhou
Richard A. Barry
Murat Azizoglu
Eric Swanson
Assignee (at issue)
Sycamore Networks, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.