Optical waveguides – With optical coupler – Particular coupling function
Reexamination Certificate
2007-01-09
2007-01-09
Kim, Ellen E. (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling function
Reexamination Certificate
active
10891023
ABSTRACT:
A tunable dispersion compensator and a tunable dispersion compensation method having an excellent dispersion compensation characteristic are provided. A tunable dispersion compensator201is constructed of first to fourth ring resonators2021to2024connected in series along a common linear waveguide203. The linear waveguide203is provided with first to fifth mode filters2041to2045in such a way as to sandwich the ring resonators2021to2024respectively. These mode filters2041to2045eliminate high-order mode noise components which transmit through the linear waveguide203. The mode filters2041to2045are constructed with the width of a central waveguide reduced or in a curved shape.
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