Optical waveguides – With optical coupler – Input/output coupler
Patent
1994-11-07
1997-05-27
Lee, John D.
Optical waveguides
With optical coupler
Input/output coupler
385 43, G02B 634
Patent
active
056339658
ABSTRACT:
Optical fiber elements, such as narrow pass-band filters, dispersion equalizers, and channel dropping filters, are constructed from 2.times.2 single mode optical fiber fused tapered couplers having formed on one side of coupling regions Bragg distributed gratings in the two fibers from which the coupler is constructed. By making the gratings at a point where the fibers remain fused together in side-by-side contact it is ensured that they lie equidistant from the coupling region.
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Bricheno Terry
Fielding Alan
Grant Michael F.
Lee John D.
Northern Telecom Limited
Palmer Phan T. H.
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