Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2005-08-02
2005-08-02
Assaf, Fayez G. (Department: 2872)
Optical waveguides
With optical coupler
Input/output coupler
C385S004000, C385S024000, C385S039000, C385S129000
Reexamination Certificate
active
06925226
ABSTRACT:
Methods of tuning, switching or modulating, or, in general, changing the resonance of waveguide micro-resonators. Changes in the resonance can be brought about, permanently or temporarily, by changing the size of the micro-resonator with precision, by changing the local physical structure of the device or by changing the effective and group indices of refraction of the mode in the micro-resonator. Further changing the asymmetry of the index profile around a waveguide can alter the birefringence of the waveguide and allows one to control the polarization in the waveguide. This change in index profile may be used to change the polarization dependence or birefringence of the resonators.
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Kimerling Lionel C.
Lim Desmond R.
Assaf Fayez G.
Gauthier & Connors LLP
Massachusetts Institute of Technology
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