Granted Patent
Utility
US 6,130,971 · App. 09/129,635
Fiber optic dense wavelength division multiplexer with a phase differential method of wavelength separation utilizing a polarization beam splitter and a nonlinear interferometer
Inventor:
Simon Cao
Patented Case
View Patent ↗
Granted: Oct 10, 2000
Filed: Aug 6, 1998
Inventor
Simon Cao
Assignee (at issue)
Avanex Corporation
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.