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US 6,888,986 B2Granted
Method and apparatus of a semiconductor-based tunable optical dispersion compensation system with multiple system with multiple channels
AssigneeIntel Corporation
InventorsShlomo Ovadia, Ansheng Liu
Life of this patent
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Abstract
A semiconductor-based tunable optical dispersion compensation method and apparatus for multiple channels. In one aspect of the present invention, an apparatus according to an embodiment of the present invention includes a semiconductor material. An optical path through the semiconductor material is included. The optical path is optically coupled to receive an optical beam. A nonlinearly chirped Bragg grating is disposed in the semiconductor material. The optical path includes the nonlinearly chirped Bragg grating to substantially reduce chromatic dispersion in the optical beam.
Claims31
An apparatus, comprising:
- a semiconductor material;
- an optical path through the semiconductor material, the optical path optically coupled to receive an optical beam, the optical beam including one or more wavelengths;
- and
- a nonlinearly chirped Bragg grating disposed in the semiconductor material, the optical path including the nonlinearly chirped Bragg grating to substantially reduce chromatic dispersion in the optical beam, the nonlinearly chirped Bragg grating including regions of silicon and polysilicon disposed in the semiconductor material along the optical path to provide a plurality of perturbations of a refractive index along the optical path.
1 more element
A method, comprising:
- directing an optical beam through a semiconductor material and to a nonlinearly chirped Bragg grating disposed in the semiconductor material;
- reflecting portions of the optical beam matching a Bragg condition of the nonlinearly chirped Bragg grating to provide a first chromatic dispersion to the optical beam;
- and
- adjusting the Bragg condition of the nonlinearly chirped Bragg grating to adjust the first chromatic dispersion provided to the optical beam, the Bragg condition adjusted by adjusting a temperature of the nonlinearly chirped Bragg grating.
1 more element
A system, comprising:
- a first optical device to transmit an optical beam;
- a second optical device optically coupled to receive the optical beam from the first optical device;
- and
- a tunable dispersion compensation device optically coupled between the first and second optical devices, the optical beam directed from the first optical device through an optical fiber and to the tunable chromatic dispersion compensation device to the second optical device, the tunable dispersion compensation device including:
- a semiconductor material;
- an optical path through the semiconductor material, the optical path optically coupled to receive the optical beam;
- and
- a nonlinearly chirped Bragg grating disposed in the semiconductor material along the optical path, the nonlinearly chirped Bragg grating having a tunable Bragg condition, the nonlinearly chirped Bragg grating optically coupled to reflect the optical beam with reduced chromatic dispersion in the reflected optical beam.
5 more elements
A system, comprising:
- a first optical device to transmit an optical beam;
- a second optical device optically coupled to receive the optical beam from the first optical device;
- and
- a tunable dispersion compensation device optically coupled between the first and second optical devices, the optical beam directed from the first optical device through an optical fiber and to the tunable chromatic dispersion compensation device to the second optical device, the tunable dispersion compensation device including:
- a semiconductor material;
- an optical path through the semiconductor material, the optical path optically coupled to receive the optical beam;
- and
- a plurality of charge modulated regions disposed in the semiconductor material along the optical path, the plurality of charge modulated regions provided with a plurality of insulated electrodes distributed along the optical path to form a nonlinearly chirped Bragg grating having a tunable Bragg condition, the nonlinearly chirped Bragg grating optically coupled to reflect the optical beam with reduced chromatic dispersion in the reflected optical beam.
5 more elements
An apparatus, comprising:
- a semiconductor material;
- an optical path through the semiconductor material, the optical path optically coupled to receive an optical beam, the optical beam including one or more wavelengths;
- and
- a nonlinearly chirped Bragg grating disposed in the semiconductor material, the optical path including the nonlinearly chirped Bragg grating to substantially reduce chromatic dispersion in the optical beam, the nonlinearly chirped Bragg grating including a plurality of charge-modulated regions disposed in the semiconductor material along the optical path to provide a plurality of perturbations of a refractive index along the optical path.
1 more element
A method, comprising:
- directing an optical beam through a semiconductor material and to a nonlinearly chirped Bragg grating disposed in the semiconductor material;
- reflecting portions of the optical beam matching a Bragg condition of the nonlinearly chirped Bragg grating to provide a first chromatic dispersion to the optical beam;
- and
- adjusting the Bragg condition of the nonlinearly chirped Bragg grating to adjust the first chromatic dispersion provided to the optical beam, the Bragg condition adjusted by adjusting a concentration of charge in each of a plurality of charge modulated regions disposed in the semiconductor material along an optical path.
1 more element
Dependencies are inferred from the claim text.