Title :
Dispersion-induced bandwidth limitation of variable true time delay lines based on linearly chirped fibre gratings
Author :
Corral, J.L. ; Marti, J. ; Fuster, J.M. ; Laming, R.I.
Author_Institution :
ETSI Telecommun., Univ. Politecnica de Valencia, Spain
fDate :
1/22/1998 12:00:00 AM
Abstract :
The electrical bandwidth limitation of continuous variable time delay units based on chirped fibre gratings is studied. The radiofrequency response of a linearly chirped fibre grating with an optical bandwidth of 4 nm and a dispersion of nearly 850 ps/nm has shown a -3 dB bandwidth of 6.4 GHz. To overcome this limitation, the use of a single-sideband plus carrier generator employing a dual-drive electro-optical modulator is experimentally demonstrated
Keywords :
chirp modulation; diffraction gratings; electro-optical modulation; optical delay lines; optical fibre dispersion; 6.4 GHz; dispersion-induced bandwidth limitation; dual-drive electro-optical modulator; linearly chirped fibre gratings; optical bandwidth; radiofrequency response; single-sideband plus carrier generator; variable true time delay lines;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19980164
