Journal article
Ultrawideband pulse generation based on overshooting effect in gain-switched semiconductor laser
We demonstrate an alternative procedure to achieve ultrawideband (UWB) radio-frequency (RF) doublet impulses. It is based on the overshooting effect appearing by biasing a semiconductor laser close to the threshold with a large-amplitude signal. Specifically, with an optical bandpass filter and an electrical lowpass filter, we easily obtain doublet-like impulses whose RF spectrum meets the UWB regulations.
Furthermore, we have been able to propagate such signals through an optical fiber link of 118-km length. Though the technique is not flexible in terms of waveform generation, our method constitutes a reliable, easy, and low-cost alternative for RF UWB impulse generation.
| Language: | English |
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| Publisher: | IEEE |
| Year: | 2008 |
| Pages: | 1299-1301 |
| ISSN: | 19410174 and 10411135 |
| Types: | Journal article |
| DOI: | 10.1109/LPT.2008.926905 |
| ORCIDs: | Tafur Monroy, Idelfonso |
Band pass filters Fiber lasers Low pass filters Microwave photonics Optical fiber filters Optical filters Optical pulse generation Pulse generation Radio frequency Semiconductor lasers Ultra wideband technology band-pass filters doublet-like impulses electrical low-pass filter gain-switched semiconductor laser impulse generation low-pass filters microwave photonics optical bandpass filter optical fiber link optical fibre communication optical filters optical links optical pulse generation overshooting effect pulse propagation semiconductor lasers ultrawideband (UWB) ultrawideband radio-frequency doublet impulses waveform generation
