Signal wave generator apparatus with polarization control
AssigneeKing Fahd University of Petroleum and Minerals
InventorKhurram Karim Qureshi
Life of this patent
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Abstract
An optical logic device includes a distributed feedback laser configured to generate a first signal corresponding to distributed feedback laser output signal, the first signal being at a first wavelength. The device further includes a bandpass filter having a center frequency corresponding to the first wavelength. Additionally, the device can include an optical circulator having a first port coupled to a logic device input signal, a second port coupled to the first signal, and a third port coupled to the bandpass filter, wherein when the logic device input signal has a power above a predetermined threshold and there is a wavelength difference between the first wavelength and an input wavelength of the logic device input signal, a suppression of the first signal occurs.
Claims7
A signal wave generator apparatus with polarization control, comprising:
- an input signal wave generator including
- a first wave generator coupled to a first polarization controller and a first modulator configured to generate a first output, wherein the first modulator is configured to amplitude modulate the first output, and
- a second wave generator coupled to a second polarization controller and a second modulator configured to generate a second output, wherein the second modulator is configured to amplitude modulate the second output,
- wherein the input signal wave generator is configured to combine the first output and the second output at a first coupler generating a third output having a wavelength within an injection locking range of the first output, wherein the third output corresponds to the input signal generated by the input signal wave generator;
- and
- a logic device configured to receive the input signal generated by the input signal wave generator, the logic device including
- a laser configured to generate a fourth output at a first wavelength,
- a third wave generator configured to generate a fifth output at a second wavelength, the second wavelength being identified based on an injection locking range of the first output, wherein the fifth output is coupled with the input signal at a second coupler and configured to stabilize the input signal,
- a bandpass filter having a center frequency corresponding to the second wavelength, and
- an optical circulator having a first port coupled to the input signal wave generator and the third wave generator, a second port coupled to the laser, and a third port coupled to the bandpass filter.
Dependencies are inferred from the claim text.