Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819815 | Method and apparatus for indirect adjustment of optical switch reflectors | Charles M. Corbalis, Shifu Yuan, David E. Welsh, Roger Helkey | 2004-11-16 |
| 6819824 | Optical switch package | David E. Welsh, James R. Sechrist, Adrian John Keating, Xuezhe Zheng, David Henry Kinghorn +3 more | 2004-11-16 |
| 6788842 | Method and apparatus for internal monitoring and control of reflectors in an optical switch | Robert Kehl Sink, Roger Helkey, Robert Anderson, Noel C. MacDonald | 2004-09-07 |
| 6728433 | Feedback stabilization of a loss optimized switch | Roger Helkey | 2004-04-27 |
| 6697547 | Wavelength power equalization by attenuation in an optical switch | Tony Walter, Dan Blumenthal, Peter Hunt, Roger Helkey, Xuezhe Zheng | 2004-02-24 |