Generation of arbitrary UWB waveforms: A low complexity optical approach

Abtahi, Mohammad‐Ali; Dastmalchi, Mansour; LaRochelle, Sophie; Rusch, Leslie A.

doi:10.1109/icuwb.2009.5288708

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2015

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“…Chang proposed the method to generate UWB monocycle or doublet pulses by a dual parallel Mach-Zehnder modulator (DPMZM) [12]. Optical pulse generation techniques for UWB have also been proposed based on optical spectral shaping and frequency-to-time conversion [13][14][15][16]. In this approach, the spectrum of a broadband source is shaped using a chirped grating to attain the optimized time domain shape in the frequency domain.…”

Section: Introductionmentioning

confidence: 99%

Ultrawideband monocycle pulse generation based on polarization modulator and low speed electrical NRZ signal

2015

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A novel ultrawideband (UWB) monocycle pulse generation system by modulating a polarization modulator (PolM) with a low speed electrical nonreturn-to-zero (NRZ) signal is proposed, which significantly reduce the bandwidth requirement of the driving signal. At each bit transition of the input NRZ signal, two polarity-reversed Gaussian pulses are generated. By properly setting the delay between these two Gaussian pulses, an optical UWB monocycle pulse can be generated. Biphase modulation (BPM) can be realized by electrically switching the polarization direction at the output of PolM, if an electrically tunable arbitrary wave plate (AWP) is employed.

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Section: Introductionmentioning

confidence: 99%