FREQUENCY TUNABLE TERAHERTZ CONTINUOUS WAVE GENERATOR
First Claim
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1. A frequency tunable terahertz continuous wave generator comprising:
- an optical signal generator that generates a double-sideband optical signal by modulating an optical signal with a single wavelength output from a single light source in a Double-sideband-Suppressed Carrier (DSB-SC) scheme, feeds back and modulates the double-sideband signal n times (where n is an integer of at least
1) in the DSB-SC scheme, and generates two optical signals with different wavelengths by selectively removing an unnecessary optical signal from among multiple double-sideband optical signals generated by feeding back the double-sideband optical signal; and
an optical signal converter that performs conversion into a terahertz continuous wave by photomixing the two optical signals with the different wavelengths generated by the optical signal generator.
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Abstract
A frequency tunable terahertz continuous wave generator controls the number of feedbacks of an optical signal output from an optical intensity modulator by adding a feedback loop between input and output terminals of the optical intensity modulator, thereby simply tuning a frequency of a terahertz continuous wave.
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Citations
12 Claims
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1. A frequency tunable terahertz continuous wave generator comprising:
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an optical signal generator that generates a double-sideband optical signal by modulating an optical signal with a single wavelength output from a single light source in a Double-sideband-Suppressed Carrier (DSB-SC) scheme, feeds back and modulates the double-sideband signal n times (where n is an integer of at least
1) in the DSB-SC scheme, and generates two optical signals with different wavelengths by selectively removing an unnecessary optical signal from among multiple double-sideband optical signals generated by feeding back the double-sideband optical signal; andan optical signal converter that performs conversion into a terahertz continuous wave by photomixing the two optical signals with the different wavelengths generated by the optical signal generator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification