Title :
All-optical WDM microwave filter with negative coefficients
Author :
Vidal, B. ; Corral, J.L. ; Martí, J.
Author_Institution :
Fiber Radio Group, Univ. Politecnica de Valencia, Spain
fDate :
3/1/2005 12:00:00 AM
Abstract :
A novel all-optical incoherent microwave filter with negative coefficients based on multiple optical carriers and a dispersive medium is presented. Negative coefficients are obtained by means of the π phase inversion in a single electrooptic Mach-Zehnder modulator and the modulator Vπ dependence with wavelength. In this way, negative coefficients can be implemented using a single modulator. Finally, experimental results for a notch filter showing the feasibility of the technique are provided.
Keywords :
electro-optical modulation; microwave filters; microwave photonics; notch filters; optical communication equipment; optical filters; wavelength division multiplexing; π phase inversion; all-optical WDM microwave filter; electrooptic Mach-Zehnder modulator; multiple optical carriers; negative coefficients; notch filter; Electrooptic modulators; Microwave filters; Microwave photonics; Optical feedback; Optical filters; Optical modulation; Optical wavelength conversion; Phase modulation; Transfer functions; Wavelength division multiplexing; Microwave photonics; optical delay lines; photonic microwave filters;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.840925
