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US 6,888,661 B1Granted
Square filter function tunable optical devices
AssigneeCheetah Omni, LLC
InventorsMohammed N. Islam, Amos Kuditcher
Life of this patent
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Abstract
A tunable optical device includes a thin film device. The thin film device includes a plurality of cavities each including an electro-optic material. The electro-optic material includes an optical characteristic capable of being manipulated by application of an electric field. In this embodiment, at least some of the plurality of cavities are coherently coupled to others of the plurality of cavities. In this embodiment, the plurality of cavities include a sufficient number of cavities to result in an approximately square frequency response for the device.
Claims65
A tunable optical device comprising:
- thin film device comprising a plurality of cavities each comprising an electro-optic material, the electro-optic material comprising an optical characteristic capable of being manipulated by application of an electric field;
- wherein at least some of the plurality of cavities are physically coupled to others of the plurality of cavities;
- and
- wherein the plurality of cavities comprise a sufficient number of cavities to result in an approximately square frequency response for the device, the approximately square frequency response comprising a frequency response with a −1 decibel bandwidth of no less than 20 GHZ.
1 more element
A tunable optical device comprising:
- a thin film device comprising at least one cavity comprising an electro-optic material, the electro-optic material comprising an optical characteristic capable of being manipulated by application of an electric field;
- wherein at least a portion of a multiple wavelength optical signal incident on the thin film device is transmitted through the at least one cavity and wherein at least a portion of the optical signal is reflected from the thin film device, the determination of the transmitted and reflected signal portions based at least in part on the electric field applied to the electro-optic material residing in each cavity;
- and
- wherein the thin film device substantially achieves polarization independence and substantially achieves a polarization dependent loss of two (2) decibels or less for at least one wavelength of the multiple wavelength optical signal.
1 more element
A tunable optical device comprising:
- a thin film device comprising at least one cavity comprising an electro-optic material, the electro-optic material comprising an optical characteristic capable of being manipulated by application of an electric field;
- wherein at least a portion of a multiple wavelength optical signal incident on the thin film device is transmitted through the at least one cavity and wherein at least a portion of the optical signal is reflected from the thin film device, the determination of the transmitted and reflected signal portions based at least in part on the electric field applied to the electro-optic material residing in each cavity;
- and
- wherein a ripple penalty associated with the at least a portion of the multiple wavelength signal that travels through the at least one optical cavity comprises approximately one (1) decibel or less.
1 more element
A method of selectively communicating an optical signal from a tunable optical device, comprising:
- receiving a multiple wavelength signal at a thin film device comprising a plurality of cavities each comprising an electro-optic material;
- manipulating an optical characteristic associated with the electro-optic material by application of an electric field to the thin film device;
- and
- selectively communicating one or more wavelengths of the multiple wavelength signal based at least in part on the applied electric field;
- wherein at least some of the plurality of cavities are physically coupled to others of the plurality of cavities;
- and
- wherein the plurality of cavities comprises a sufficient number of cavities to result in an approximately square frequency response for the device, the approximately square frequency response comprising a frequency response with a −1 decibel bandwidth of no less than 20 GHZ.
4 more elements
A tunable optical device comprising:
- a thin film device comprising at least three (3) cavities, each cavity comprising an electro-optic material, the electro-optic material comprising an optical characteristic capable of being manipulated by application of an electric field;
- wherein at least a portion of a multiple wavelength optical signal incident on the thin film device is transmitted through the at least three (3) cavities and wherein at least a portion of the optical signal is reflected from the thin film device, the determination of the transmitted and reflected signal portions based at least in part on the electric field applied to the electro-optic material residing in each cavity;
- and
- wherein the thin film device substantially achieves polarization independence and wherein the thin film device substantially achieves a polarization dependent loss of two (2) decibels or less for at least one wavelength of the multiple wavelength optical signal.
1 more element
A tunable optical device comprising:
- a thin film device comprising at least one cavity comprising a liquid crystal material, the liquid crystal material comprising an optical characteristic capable of being manipulated by application of an electric field;
- wherein at least a portion of a multiple wavelength optical signal incident on the thin film device is transmitted through the at least one cavity and wherein at least a portion of the optical signal is reflected from the thin film device, the determination of the transmitted and reflected signal portions based at least in part on the electric field applied to the liquid crystal material residing in each cavity;
- and
- wherein the thin film device substantially achieves polarization independence and wherein the thin film device substantially achieves a polarization dependent loss of two (2) decibels or less for at least one wavelength of the multiple wavelength optical signal.
1 more element
A tunable optical device comprising:
- a thin film device comprising at least one cavity comprising an electro-optic material, the electro-optic material comprising an optical characteristic capable of being manipulated by application of an electric field, wherein the electro-optic material comprises a crystal axis that is substantially parallel to the electric field applied to the thin film device;
- wherein at least a portion of a multiple wavelength optical signal incident on the thin film device is transmitted through the at least one cavity and wherein at least a portion of the optical signal is reflected from the thin film device, the determination of the transmitted and reflected signal portions based at least in part on the electric field applied to the electro-optic material residing in each cavity;
- and
- wherein the thin film device substantially achieves polarization independence and wherein the thin film device substantially achieves a polarization dependent loss of two (2) decibels or less for at least one wavelength of the multiple wavelength optical signal.
1 more element
A tunable optical device comprising:
- a thin film device comprising at least three (3) cavities, each cavity comprising an electro-optic material, the electro-optic material comprising an optical characteristic capable of being manipulated by application of an electric field;
- wherein at least a portion of a multiple wavelength optical signal incident on the thin film device is transmitted through the at least three (3) cavities and wherein at least a portion of the optical signal is reflected from the thin film device, the determination of the transmitted and reflected signal portions based at least in part on the electric field applied to the electro-optic material residing in each cavity;
- and
- wherein the thin film device reduces a ripple penalty associated with the at least a portion of the multiple wavelength signal that travels through the at least three (3) optical cavities, the ripple penalty associated with the at least a portion of the multiple wavelength signal comprising approximately three (3) decibels or less.
1 more element
Dependencies are inferred from the claim text.