Opto-electronic feedback for stabilizing oscillators
First Claim
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1. A device, comprising:
- an oscillator producing an electrical oscillation signal; and
an opto-electronic oscillator comprising a positive feedback loop which comprises an optical section, an electrical section, and an optical detector to connect the optical section and the electrical section, wherein the optical section comprises an optical modulator modulating light under control of an electrical output signal from the electrical section and an optical delay line to receive an optical output of the optical modulator,wherein the electrical section is coupled to receive the electrical oscillation signal from the oscillator and to send an electrical signal in the electrical section into the oscillator to suppress phase noise in the oscillator.
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Abstract
This application describes use of an opto-electronic feedback in oscillators to suppress phase noise based on the high Q factor of the opto-electronic feedback.
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Citations
27 Claims
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1. A device, comprising:
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an oscillator producing an electrical oscillation signal; and an opto-electronic oscillator comprising a positive feedback loop which comprises an optical section, an electrical section, and an optical detector to connect the optical section and the electrical section, wherein the optical section comprises an optical modulator modulating light under control of an electrical output signal from the electrical section and an optical delay line to receive an optical output of the optical modulator, wherein the electrical section is coupled to receive the electrical oscillation signal from the oscillator and to send an electrical signal in the electrical section into the oscillator to suppress phase noise in the oscillator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for stabilizing an oscillator, comprising:
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directing an output oscillation signal from a signal port of an oscillator into an electrical section of an opto-electronic oscillator having an optical section and the electrical section which form a closed loop with a positive feedback; and injecting an oscillation signal that is produced in the electrical section from an optical signal in the optical section into the signal port of the oscillator to stabilize the oscillator. - View Dependent Claims (24, 25, 26, 27)
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Specification