System and method for shaping a waveform
OwnerTim Olson, Colby Dill, III +1inventors
InventorsTim Olson, Colby Dill, III, Ulf L. Osterberg
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Abstract
An optical transmission system for transmitting an optical pulse in a dielectric waveguide, the system including a filter for altering a shape of the optical pulse in both amplitude and phase with respect to time so as to substantially suppress the generation of third-order nonlinearities and increase a power level of the optical pulse, the filter further providing a secure encrypted optical waveform that may be decrypted by a matching optical filter, the system allowing for energy sharing of the pulses to substantially increase system bandwidth.
Claims20
A method for transmitting data as an optical pulse along a dielectric waveguide comprising the steps of:
- identifying a third-order nonlinearity threshold;
- generating an optical pulse including input data, the optical pulse having a shape and a power level which exceeds the identified third-order nonlinearity threshold;
- altering the optical pulse shape in both amplitude and phase with respect to time to form a modified shape which is substantially maintained below said third-order nonlinearity threshold so as to avoid development of third-order nonlinearities occurring in the dielectric waveguide during transmission of said optical pulse;
- and
- inputting the optical pulse into the optical fiber for propagation down the dielectric waveguide.
A system for transmitting data as an optical pulse along a dielectric waveguide comprising:
- a third-order nonlinearity threshold;
- an optical pulse generator for generating an optical pulse having a power level that exceeds said third-order nonlinearity threshold, said optical pulse including input data to be transmitted;
- a first filter coupled to said optical pulse generator, said first filter receiving the optical pulse, said first filter coupled to the dielectric waveguide;
- said first filter altering a shape of the optical pulse in both amplitude and phase with respect to time to form a modified optical pulse shape, which is substantially maintained below said third-order nonlinearity threshold so as to suppress generation of third-order nonlinearities in the dielectric waveguide.
A method for securely transmitting data in the form of an optical pulse along a dielectric waveguide comprising the steps of:
- generating an optical pulse including input data to be transmitted;
- altering a shape of the optical pulse in amplitude and phase with respect to time to encrypt the input data within the optical pulse;
- inputting the modified optical pulse into the dielectric waveguide for propagation down the dielectric waveguide;
- and
- altering the modified optical pulse shape in amplitude and phase with respect to time to de-crypt the data within the optical pulse;
- and
- converting the optical pulse to output data substantially corresponding to the input data.
A system for securely transmitting data in the form of an optical pulse along an dielectric waveguide comprising:
- an optical pulse generator for generating an optical pulse including input data to be transmitted;
- a filter coupled to said optical pulse generator, for receiving the optical pulse, said first filter formed according to the following formula:
- h
-
- (
- t
- )
- =
- ∫
- -
- ∞
- ∞
-
- H
-
- (
- w
- )
-
-
- -
- j
-
-
- wt
-
-
-
- w
- where H(w) is a data transfer function that is determined as a function of frequency;
- said first filter altering a shape of the optical pulse in both amplitude and phase with respect to time to encrypt the optical pulse;
- said first filter coupled to the dielectric waveguide;
- and
- said encrypted optical pulse inputted into and transmitted along the dielectric waveguide.
A system for transmitting data as an optical pulse along a dielectric waveguide comprising:
- a third-order nonlinearity threshold;
- an optical pulse generator for generating an optical pulse having a power level that exceeds said third-order nonlinearity threshold, said optical pulse including input data to be transmitted;
- a filter coupled to said optical pulse generator, for receiving the optical pulse, said filter having an impulse response h(t), which is a Fourier transform of a data transfer function H(w);
- said first filter altering a shape of the optical pulse in both amplitude and phase with respect to time to form a modified optical pulse shape, which is substantially maintained below said third-order nonlinearity threshold so as to suppress generation of third-order nonlinearities in the dielectric waveguide.
Dependencies are inferred from the claim text.