Opto-electronic oscillator including a tunable electro-optic filter
First Claim
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1. An opto-electronic oscillator comprising:
- a modulator to modulate light in response to a modulation control signal and to output modulated light;
a tunable optical filter to receive at least one portion of the modulated light output from the modulator and to spectrally filter the received portion of the modulated light to produce a filtered optical signal;
a photodetector to receive and convert the filtered optical signal into a detector signal; and
a feedback section to receive the detector signal and to produce the modulation control signal to the modulator.
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Abstract
An opto-electronic oscillator including a modulator for outputting modulated light and a tunable filter for receiving modulated light output from the modulator.
91 Citations
42 Claims
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1. An opto-electronic oscillator comprising:
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a modulator to modulate light in response to a modulation control signal and to output modulated light;
a tunable optical filter to receive at least one portion of the modulated light output from the modulator and to spectrally filter the received portion of the modulated light to produce a filtered optical signal;
a photodetector to receive and convert the filtered optical signal into a detector signal; and
a feedback section to receive the detector signal and to produce the modulation control signal to the modulator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for generating an oscillatory signal, the method comprising:
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generating light;
modulating the light into sideband optical signals;
selecting a single sideband optical signal from the modulated light using a tunable filter;
mixing the single sideband optical signal with the light;
generating an electrical signal based on the mixed single sideband optical signal and light;
amplifying the electrical signal; and
controlling the modulation of the light using the amplified electrical signal. - View Dependent Claims (30, 31, 32, 33, 34, 35)
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36. An opto-electronic oscillator, comprising:
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an optical modulator having an input optical port to receive input continuous-wave light, a control port to receive a modulation control signal, and an output optical port to export modulated light, wherein the optical modulator modulates the input continuous-wave light in response to the modulation control signal; and
an active feedback loop having an input end coupled to the output optical port of the optical modulator to receive at least a portion of the modulated light and an output end coupled to the control port to supply the modulation control signal, wherein the active feedback loop comprises;
a tunable optical resonator to filter the received portion of the modulated light;
a photodetector to mix light after being filtered by the tunable optical resonator and a portion of the input continuous-wave light to produce a detector output; and
an amplifier to amplify the detector output to produce the modulation control signal. - View Dependent Claims (37, 38, 39, 40, 41, 42)
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Specification