Title :
Continuously Tunable Microwave Photonic Filter Using a Multiwavelength Fiber Laser
Author :
Abreu-Afonso, Javier ; Díez, Antonio ; Cruz, Jose Luis ; Andrés, Miguel V.
Author_Institution :
Dept. de Fis. Aplic., Univ. de Valencia, Burjassot, Spain
Abstract :
A tunable microwave photonic filter is demonstrated by employing a stable multiwavelength erbium-doped fiber laser and a dispersive medium. The specific configuration of the multiwavelength laser allows for adjustment of the number of laser lines, i.e., the optical taps of the filter and their spectral spacing. The transfer function of the filter is continuously tunable, exhibiting transmitted bands of less than 1-GHz bandwidth and sidelobe suppression of -17 dB in the 10-30 GHz frequency range.
Keywords :
erbium; fibre lasers; laser stability; laser tuning; microwave filters; microwave photonics; optical fibre dispersion; optical fibre filters; optical transfer function; dispersive medium; frequency 10 GHz to 30 GHz; laser lines; optical taps; sidelobe suppression; spectral spacing; stable multiwavelength erbium-doped fiber laser; transfer function; transmitted bands; tunable microwave photonic filter; Masers; Microwave filters; Optical fiber dispersion; Optical fiber filters; Optical fibers; Microwave photonic filter; microwave photonics; photonic signal processing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2222877