Optical waveguides – With optical coupler – Input/output coupler
Patent
1994-06-28
1996-08-13
Bovernick, Rodney B.
Optical waveguides
With optical coupler
Input/output coupler
G02B 632
Patent
active
055464874
ABSTRACT:
A cylindrical lens for coupling light from a line of emitting facets of laser diodes to a line of entrance faces of respective fiber waveguides. The lens is biaspheric, i.e., it includes two aspheric refractive surfaces which, in planes transverse to the lens axis, have curvatures that are other than of a conic in cross-section. The surfaces are shaped to correct for spherical aberrations, coma, and other off-axis aberrations. A system places the lens to image the emitting facets of the laser diode line onto the entrance facets of the fiber waveguides so that coupling efficiency between the two is relatively insensitive to lateral misalignment.
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Bovernick Rodney B.
Caufield Francis J.
Polaroid Corporation
Wise Robert E.
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