Optical waveguides – With optical coupler – Particular coupling function
Patent
1995-05-31
1996-06-04
Bovernick, Rodney B.
Optical waveguides
With optical coupler
Particular coupling function
385 29, 385 11, 385 43, 385 45, G02B 626
Patent
active
055241565
ABSTRACT:
An optical waveguide circuit comprises a mode splitter and an input guide (1/4/6.1) and first and second output guides (6.2/2, 6.3/3), and a mode converter (5) incorporated in the input guide for converting a fraction of an optical signal (I.sub.i), entering via the input waveguide, of a first propagation mode into a second propagation mode having mutually different order. The mode converter (5) has a first waveguiding section (5.1) and a second waveguiding section (5.2), which adjoin each other via a single discontinuity (7). The first and second sections (5.1 and 5.2) have propagation modalities, as a result of which, at the discontinuity, a coupling can take place between two propagation modes of different order, whereas the extent (x) of discontinuity determines the fraction of conversion for obtaining a desired splitting ratio in emitting signals (I.sub.o1, I.sub.o2).
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Bovernick Rodney B.
Koninklijke PTT Nederland N.V.
Michaelson Peter L.
Sunghavi Hemang
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