Optical waveguides – With optical coupler – Input/output coupler
Patent
1997-07-16
1999-08-17
Lee, John D.
Optical waveguides
With optical coupler
Input/output coupler
385 79, G02B 625, G02B 632
Patent
active
059405570
ABSTRACT:
Embodiments of the present invention provide optical fibre microlenses having anamorphic focusing means which have a major axis which is not perpendicular to the longitudinal axis of the optical fibre. In particular, a wedge-shaped optical fibre microlens whose tip is skewed with respect to the longitudinal axis of the optical fibre, is described. Such optical fibre microlenses find particular application in coupling light from semiconductor lasers having asymmetrical output radiation patterns, since they increase the coupling efficiency and reduce the level of back reflection from the microlens to the laser. This is of particular importance for semiconductor lasers used to pump optical fibre amplifiers.
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European Search Report, EP 96 30 5605, Feb. 01, 1997.
Hewlett--Packard Company
Kang Juliana K.
Lee John D.
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