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Abstract
We propose and demonstrate a novel scheme to generate ultra-wideband (UWB) triplet pulses based on four-wave mixing and phase-to-intensity modulation conversion. First a phase-modulated Gaussian doublet pulse is generated by four-wave mixing in a highly nonlinear fiber. Then an UWB triplet pulse is generated by generating the first-order derivative of the phase-modulated Gaussian doublet pulse using an optical filter serving as a frequency discriminator. By locating the optical signal at the linear slope of the optical filter, the phase modulated Gaussian doublet pulse is converted to an intensity-modulated UWB triplet pulse which well satisfies the Federal Communications Commission spectral mask requirements, even in the extremely power-restricted global positioning system band.
Highlights
Ultra-wideband (UWB) has been considered as a promising radio technology for future shortrange high-capacity wireless communication and sensor networks due to its numerous advantages, such as low power consumption, immunity to multipath fading, and high data rate [1,2]
By locating the optical signal at the linear slope of the optical filter, the phase modulated Gaussian doublet pulse is converted to an intensity-modulated UWB triplet pulse which well satisfies the Federal Communications Commission spectral mask requirements, even in the extremely power-restricted global positioning system band
This paper presents a Federal Communications Commission (FCC)-compliant UWB triplet pulse generation technique using fourwave mixing (FWM) and phase-to-intensity modulation (PM-IM) conversion
Summary
Ultra-wideband (UWB) has been considered as a promising radio technology for future shortrange high-capacity wireless communication and sensor networks due to its numerous advantages, such as low power consumption, immunity to multipath fading, and high data rate [1,2]. The U.S Federal Communications Commission (FCC) has approved the unlicensed use of spectral band from 3.1 to 10.6 GHz with power density lower than –41.3 dBm/MHz [1] Such low spectral density in a wide spectral range leads to a limited propagation distance (typically
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