Optical phase shifter having an integrated planar optical waveguide and phase shifter element
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United States of America Patent
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Aug 6, 2002
Grant Date -
N/A
app pub date -
Nov 22, 2000
filing date -
Nov 23, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
An optical phase shifter including a constant phase shift element or a variable phase shift element, each introducing a desired and predetermined phase shift into an optical signal passing through the phase shifter. The phase shifter has coaxial first and second waveguides each with a core defining an optical path, through the first waveguide and having an output facet, and which waveguides are separated from each other by a predetermined distance. The phase shift element is disposed between the waveguides and an actuator is coupled to the phase shift element for causing selective movement of the phase shift element.
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