True time-delay scheme for feeding optically controlled phased-array antennas using chirped-fiber gratings

Author

Corral, J.L. ; Marti, J. ; Fuster, J.M. ; Laming, R.I.

Author_Institution

ETSI Telecommunicacion, Univ. Politecnica de Valencia, Spain

Volume

9

Issue

11

fYear

1997

Firstpage

1529

Lastpage

1531

Abstract

A novel approach of true-time delay (TTD) optical feeder for phased-array antennas is proposed and demonstrated. A compact size continuously variable TTD is achieved by employing tunable lasers and one wide bandwidth chirped-fiber grating as dispersive element. A high-resolution performance (5.3 ps) is obtained for a 26-GHz phased-array antenna employing narrow tuning bandwidth lasers with a wavelength stability of 0.005 nm and a 4 nm bandwidth chirped grating.

Keywords

antenna phased arrays; chirp modulation; delays; diffraction gratings; high-speed optical techniques; laser stability; laser tuning; optical fibres; optical modulation; optical resolving power; 2 to 6 GHz; 5.3 ps; GHz phased-array antenna; bandwidth chirped grating; chirped-fiber gratings; compact size; continuously variable; dispersive element; high-resolution performance; narrow tuning bandwidth lasers; optically controlled phased-array antennas; phased-array antennas; true time-delay scheme; true-time delay optical feeder; tunable lasers; wavelength stability; wide bandwidth chirped-fiber grating; Antenna feeds; Bandwidth; Chirp; Delay; Gratings; Laser stability; Laser tuning; Optical control; Optical variables control; Tunable circuits and devices;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.634731

Filename

634731