| Patent Number |
Title Of Patent |
Date Issued |
| 6282344 |
Intersecting N x M star couplers for routing optical signals |
August 28, 2001 |
| Overlapped coupler combination Photonic Lightguide Circuits for routing optical signals within an optical communication system include at least two couplers whose planar slab waveguides are disposed in supportedly overlying relation so as to conserve wafer real estate. In a preferred |
| 6173092 |
Optical mirror switch utilizing walk-off devices |
January 9, 2001 |
| An optical mirror switch is formed by utilizing a pair of walk-off devices separated by a polarization switch. A first signal port is coupled to the first walk-off device and a second signal port is coupled to the second walk-off device. A reflective surface is also disposed beyond the o |
| 6112000 |
Reflective array multiplexer with polarization compensation |
August 29, 2000 |
| An optical multiplexer is formed that overcomes the polarization dependence of conventional DWDM routers and is also significantly smaller than prior art routers. A reflective router is formed that utilizes one-half of a star coupler, with a reflective surface formed along the planar fac |
| 6091543 |
Apparatus for providing non-reciprocal termination of parallel like polarization modes |
July 18, 2000 |
| The present invention teaches a methodology for producing parallel beams having like polarizations or parallel like polarization modes (PLPM) without utilizing 90 degree polarization interchangers, e.g., half wave plates. By utilizing Faraday rotators in combination with one or more walk |
| 6040942 |
Polarization separator/combiner |
March 21, 2000 |
| A polarization separator/combiner for separating a light beam having two orthogonally polarized components into two parallel orthogonally polarized light beams which is especially useful as a reflective substitute for conventional walk-off devices or other birefringent separator/combiner |
| 6002512 |
Optical circulator using latchable garnet |
December 14, 1999 |
| An optical circulator is disclosed that utilizes a polarization rotator comprising a polarization changer (e.g., a properly-oriented half-wave plate) in combination with a pair of latched garnet Faraday rotators. The latched garnet rotators are positioned next to each other and oriented |
| 5923472 |
3-port optical circulator/switch with mirror |
July 13, 1999 |
| The present invention is a three port optical circulator including a reflective device such as a mirror. Advantageously, the incorporation of the mirror into the circulator of the present invention enables two ports of the circulator to be terminated using a dual fiber termination and a |
| 5729377 |
Optical apparatus |
March 17, 1998 |
| A walk-off device is used to split an incoming beam into two parallel outgoing beams having orthogonal polarization. A polarization flipper is positioned to change the polarization of one of the two beams exiting from the walk-off device so that the two beams are parallel and have es |
| 5703992 |
Method and apparatus for packaging optical components |
December 30, 1997 |
| An optical package and methods for its use are disclosed. The optical package may suitably include a container and a rail that fit within the container for receiving a plurality of mounted optical components. The rail may be secured within the container so that neither the rail nor the |
