Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7420734 | Planar waveguide grating devices having controlled polarization dependent sensitivity and method of manufacturing thereof | Ashok Balakrishnan, Muthukumaran Packirisamy | 2008-09-02 |
| 7376305 | Echelle gratings with low Polarization Dependent Loss (PDL) using metal coating on the reflecting facets only | Andre Delage, Boris Lamontagne, Siegfried Janz, Pavel Cheben, Lynden Erickson +2 more | 2008-05-20 |