Optimisation of optical bandpass filters for all-optical wavelength conversion using genetic algorithms
| Autor: | Z. Li, Y Yong Liu, J.M. Vazquez, H.J.S. Dorren, GD Giok-Djan Khoe, S. Zhang, Eduward Tangdiongga, Daan Lenstra |
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| Přispěvatelé: | Electro-Optical Communication, Center for Wireless Technology Eindhoven |
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
Optical amplifier
Physics business.industry Bandwidth (signal processing) Condensed Matter Physics Transfer function Atomic and Molecular Physics and Optics Interferometry Optics Band-pass filter Optical transfer function Electrical and Electronic Engineering Center frequency Optical filter business |
| Zdroj: | IEEE Journal of Quantum Electronics, 24(1), 57-64. Institute of Electrical and Electronics Engineers |
| ISSN: | 0018-9197 |
| Popis: | We propose using genetic algorithms to numerically optimize optical band-pass filters (OBFs) for inverted and noninverted wavelength conversion based on semiconductor optical amplifiers. A fourth order Hermite-Gaussian sum series is used to describe the filter transfer function. Signal eye openings greater than 30 dB are obtained for both inverted and noninverted output signals. The dependence of the eye opening, overshoot and pulse amplitude fluctuation on variations in the filter center frequency and bandwidth is explored. We find that for an optimized eye opening in the noninverted signal the filter should be detuned towards lower frequency with respect to the probe frequency. Finally, we show that the optimum filter transfer function obtained with the genetic algorithm can be approximated with good agreement using an asymmetric Mach-Zehnder interferometer combined with a Gaussian OBF |
| Databáze: | OpenAIRE |
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