Abstract
We propose a scheme to generate ultrawideband (UWB) monocycle pulses using delayed interference of a phase-shift keying (PSK) signal. The PSK signal is generated with an optical phase modulator. A fiber-based delay interferometer is used to provide the delay together with a phase shift between the signals in its two arms before the interference. The two opposite phase shifts correspond to the generation of a pair of polarity-reversed UWB monocycle pulses. The full width at half maximum of the pulses is and the fractional bandwidth is 168%.
© 2011 Optical Society of America
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