Planar waveguide-based variable optical attenuator
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United States of America Patent
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Issued Date -
Sep 21, 2006
app pub date -
Mar 10, 2006
filing date -
Mar 11, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A planar waveguide-based variable optical attenuator having excellent mass-productiveness and suitable for miniaturization is provided at a low cost. The planar waveguide-based variable optical attenuator includes a multimode interference optical waveguide having an incoming end and an outgoing end, and a thin-film heater arranged at a predetermined position on one side of left and right sides of an optical axis of the multimode interference optical waveguide. The thin-film heater is arranged at a predetermined position including at least a part of fields, among field groups appearing on the multimode interference optical waveguide, on one side of left and right sides of the optical axis.
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