Optical waveguides – Planar optical waveguide
Reexamination Certificate
2004-09-16
2008-08-05
Bovernick, Rodney (Department: 2874)
Optical waveguides
Planar optical waveguide
C385S131000, C385S144000, C372S009000, C372S045010
Reexamination Certificate
active
07409134
ABSTRACT:
A semiconductor laser device incorporates a beam control layer for reducing far field and beam divergence. Within the beam control layer, a physical property of the semiconductor material varies as a function of depth through, the beam control layer, by provision of a first sub-layer in which the property varies gradually from a first level to a second level, and a second sub-layer in which the property varies from said second level to a third level. In the preferred arrangement, the conduction band edge of the semiconductor has a V-shaped profile through the beam control layer.
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Bovernick Rodney
Intense Limited
Momkus McCluskey, LLC
Perkins Jefferson
Rojas Omar
LandOfFree
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