Title :
Effects of optical modulation on continuously variable millimeter-wave delay lines based on optical fiber gratings
Author :
Corral, J.L. ; Marti, J. ; Fuster, J.M.
Author_Institution :
ETSI Telecomunicacion, Valencia, Spain
Abstract :
The performance of a continuously variable millimeter-wave true time delay unit based on one chirped fiber grating is analyzed. Different optical modulations schemes (DSB+C, SSB+C, self-heterodyne) are studied and the main limitations introduced. Microwave signal level influence on time delay and amplitude ripple on detected signal is analyzed. The theoretical results have been confirmed with measurements on a 4 nm bandwidth chirped fiber grating.
Keywords :
antenna accessories; diffraction gratings; microwave photonics; millimetre wave antenna arrays; optical delay lines; optical fibres; optical modulation; DSB+C scheme; SSB+C scheme; amplitude ripple; chirped fiber grating; continuously variable MM-wave delay lines; microwave signal level influence; millimeter-wave delay lines; optical beamforming networks; optical fiber gratings; optical modulation; phased arrays; self-heterodyne scheme; true time delay unit; Bandwidth; Chirp; Delay effects; Delay lines; Fiber gratings; Optical mixing; Optical modulation; Optical network units; Radio frequency; Signal detection;
Conference_Titel :
Microwave Symposium Digest, 1999 IEEE MTT-S International
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
0-7803-5135-5
DOI :
10.1109/MWSYM.1999.779583
