Patent
Optical RF downconverter
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TLDR
An optical downconverter with very wide bandwidth operable to separately ically downconvert individual spectrum sections of an RF spectrum, comprising the steps of modulating an optical carrier with the RF spectral width to be downconverted, spatially separating via optical gratings the different sections of the spectrum of the optical carrier sidebands into a plurality of optical channels, generating a different phase-coherent optical local oscillator signal for each optical channel at an appropriate frequency such that the difference between the LO frequency and the particular spectrum section on the given optical channel is equal to a predetermined differenceAbstract:
An optical downconverter with very wide bandwidth operable to separately ically downconvert individual spectrum sections of an RF spectrum, comprising the steps of modulating an optical carrier with the RF spectral width to be downconverted, spatially separating via optical gratings the different sections of the spectrum of the optical carrier sidebands into a plurality of optical channels, generating a different phase-coherent optical local oscillator signal for each optical channel at an appropriate frequency such that the difference between the LO frequency and the particular spectrum section on the given optical channel is equal to a predetermined difference frequency; and mixing each optical channel with its appropriate frequency L.O. and detecting the difference frequency resulting therefrom.read more
Citations
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References
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Patent
Optical multiplexer and demultiplexer
TL;DR: An optical multiplexer and/or optical demultiplexer as discussed by the authors comprises a plurality of optical filters each of which transmits a predetermined wavelength and reflects other wavelengths, said optical filters being arranged so that an optical beam is transmitted or reflected via each optical filter in sequence in a zigzag fashion.
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