Title :
A Dispersion Tolerant Analog Optical Receiver for Directly Modulated RF Photonic Links
Author_Institution :
L-3 Photonics, Carlsbad, CA
fDate :
3/15/2007 12:00:00 AM
Abstract :
A dispersion tolerant optical receiver has been theoretically analyzed and experimentally demonstrated to mitigate the effects of fiber chromatic dispersion on directly modulated radio-frequency photonic links. The technique is based on a carrier-suppressed photonic image rejection down-converter implemented with a dual-electrode Mach-Zehnder modulator and a transmission mode fiber-Bragg-grating filter. The chromatic dispersion effect is significantly suppressed and a nearly frequency-independent intermediate-frequency response is experimentally observed over the band of 6 to 14 GHz
Keywords :
microwave photonics; optical fibre dispersion; optical fibre filters; optical modulation; optical receivers; radio-over-fibre; 6 to 14 GHz; Mach-Zehnder modulator; analog receiver; carrier suppression; chromatic dispersion effect; direct modulation; dispersion tolerant receiver; dual-electrode modulator; fiber chromatic dispersion; fiber-Bragg-grating filter; frequency-dependent response; intermediate-frequency response; optical receiver; photonic image rejection downconverter; radiofrequency photonic links; transmission mode filter; Chromatic dispersion; High speed optical techniques; Optical distortion; Optical feedback; Optical fiber filters; Optical filters; Optical modulation; Optical receivers; Optical transmitters; Radio frequency; Carrier suppression; dual-electrode Mach–Zehnder modulators (DE-MZMs); fiber chromatic dispersion; image-rejection down-converter; radio-frequency (RF) photonics;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.892905
