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Ultracompact optical filter based on a stub resonator in GaInAsP/InP optical wire technology

Sophie Maricot1, Marie Lesecq, Jean-Pierre Vilcot

  • 1Institut d'Electronique, de Microélectronique et de Nanotechnologie, UMR 8520, Université des Sciences et Technologies de Lille, Villeneuve d'Ascq, France. sophie.maricot@iemn.univ-lille1.fr

Optics Letters
|July 3, 2009
PubMed

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Related Concept Videos

Active Filters01:25

Active Filters

Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is: