Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2005-07-05
2005-07-05
Frech, Karl D. (Department: 2876)
Optical waveguides
With optical coupler
Particular coupling structure
C385S014000, C385S039000, C385S040000, C385S042000
Reexamination Certificate
active
06915047
ABSTRACT:
An optical tap is provided that includes an input waveguide having a first width for receiving an optical signal and a tap waveguide having a second width. The tap waveguide is coupled to the input waveguide in a junction region. An output waveguide, which has a third width, is coupled to the input waveguide in the junction region defined by the intersection of the input and tap waveguides. The input waveguide, tap waveguide and output waveguide respectively have input, tap and output longitudinal, centrally disposed optical axes. The input and tap axes define a first acute angle therebetween and the input and output axes define a second acute angle therebetween. A tapping ratio is defined by a ratio of optical output power from the tap waveguide to optical output power from the output waveguide. The tapping ratio is determined at least in part by the first, second and third widths and the first and second angles. The first, second and third widths and the first and second angles have values selected to produce a specified tapping ratio.
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Frolov Sergey
Mekis Attila
Frech Karl D.
Inplane Photonics, Inc.
Mayer Fortkort & Williams PC
Mayer, Esq. Stuart H.
Walsh Daniel
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