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- W2037646812 abstract "The non-linear characteristics of semiconductor lasers have been exploited in order to generate low phase noise microwave and millimetre-wave frequencies for radio-over-fibre applications. This is achieved using the modulation characteristics of a MQW-DFB semiconductor laser. A high FM index MQW-DFB laser is directly modulated at the resonant frequency of its FM characteristic response in order to generate high order harmonics. By optimising the RF modulation drive power, high order sideband components can be generated, selected and mixed on a photodetector to generate microwave and millimetre-wave frequencies. This paper presents results utilising the direct modulation technique, which demonstrate the generation of beat frequencies up to 25GHz. Optimization of the optical filtering process and the effects of the drive source phase noise and of optical amplification on the phase noise of the generated beat frequency are also discussed. (6 pages)" @default.
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- W2037646812 date "1997-01-01" @default.
- W2037646812 modified "2023-10-16" @default.
- W2037646812 title "Optical generation and transport of microwave signals" @default.
- W2037646812 doi "https://doi.org/10.1049/ic:19970725" @default.
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