Coherent light generators – Particular beam control device – Having particular beam control circuit component
Reexamination Certificate
2006-03-21
2006-03-21
Harvey, Minsun Oh (Department: 2828)
Coherent light generators
Particular beam control device
Having particular beam control circuit component
C372S098000, C372S099000
Reexamination Certificate
active
07016381
ABSTRACT:
A fast current-controlled polarization switching VCSEL with two independent intra-cavity p-contact electrodes and two independent intra-cavity n-contact electrodes positioned along the four sides of the symmetric aperture such that there are two independent p- and n-contact pairs placed on opposite sides of the aperture in a non-overlapping configuration. The anisotropy resulting from the unidirectional current flow causes the light output to be polarized perpendicular to the direction of current flow. A VCSEL driver circuit switches the polarization state of the output light by using the two orthogonal pairs of non-overlapping intra-cavity contacted electrodes to change the direction of current flow into the VCSEL aperture by 90 degrees.
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Husain Anis
Krishnamoorthy Ashok V.
Harvey Minsun Oh
Nguyen Phillip
Ziva, Inc.
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