| Patent Number |
Title Of Patent |
Date Issued |
| 5537617 |
Multi-channel optical head and data storage system |
July 16, 1996 |
| A multichannel optical head and data storage system employs an integrated-optical read channel. The read channel may be fabricated on a planar waveguide structure that separates the data signals of the multiple lasers. The read channel includes focus error sensors and track error sen |
| 5353273 |
Multi-channel optical head and data storage system |
October 4, 1994 |
| A multichannel optical head and data storage system employs an integrated-optical read channel. The read channel may be fabricated on a planar waveguide structure that separates the data signals of the multiple lasers. The read channel includes focus error sensors and track error sen |
| 5166989 |
Integrated polarization detection system |
November 24, 1992 |
| A substrate has a pair of overlapping optical couplers for separately coupling a first and a second polarization component of a light beam into a first and a second waveguide channel. The channels are oriented with their longitudinal axis approximately perpendicular to each other. A firs |
