Title :
Chirped fiber Bragg gratings for electrically tunable time delay lines
Author :
Italia, Vincenzo ; Pisco, Marco ; Campopiano, Stefania ; Cusano, Andrea ; Cutolo, Antonello
Author_Institution :
Dept. Eng., Univ. of Sannio, Benevento, Italy
Abstract :
In this paper, a continuously variable delay line for phased array antennas is presented. The proposed delay line operates at a single wavelength and is based on properly designed linearly chirped fiber Bragg gratings. Continuous true time delay can be achieved by changing the temperature or strain along the grating region. Numerical results show that the delay line can be used for wide-band beamforming at radio frequencies up to 30 GHz with 1 ps as minimum time delay.
Keywords :
Bragg gratings; antenna phased arrays; chirp modulation; microwave photonics; optical communication equipment; optical delay lines; optical fibre networks; optical fibres; 1 ps; 30 GHz; chirped gratings; continuously variable delay line; electrically tunable delay lines; fiber Bragg gratings; phase array antennas; time delay lines; wide-band beamforming; Antenna arrays; Array signal processing; Capacitive sensors; Delay effects; Delay lines; Gratings; Phased arrays; Radio frequency; Temperature; Wideband; Fiber Bragg grating; optical delay lines; optical fiber devices;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2005.846533
