Title :
Photonic Crystal Fiber Beamformer for Multiple X -Band Phased-Array Antenna Transmissions
Author :
Chen, Maggie Yihong ; Subbaraman, Harish ; Chen, Ray T.
Author_Institution :
Omega Opt., Inc., Austin
fDate :
3/1/2008 12:00:00 AM
Abstract :
A multiple-beam optical beamformer based on highly dispersive photonic crystal fibers (PCFs) is presented. Each radio-frequency (RF) beam can be independently controlled to steer continuously. The dispersion of the fabricated PCFs is as high as -600 ps/nmldrkm at 1550 nm. Simultaneous two-beam transmission is demonstrated using two lasers with different optical wavelengths. The two wavelengths generate two independent sets of time delays, which correspond to two independent RF beams.
Keywords :
antenna phased arrays; light transmission; optical fibre dispersion; optical fibre fabrication; photonic crystals; multiple X-band phased-array antenna transmissions; optical wavelengths; photonic crystal fiber beamformer; photonic crystal fiber dispersion; photonic crystal fiber fabrication; radiofrequency beam; time delays; wavelength 1550 nm; Antenna arrays; Delay effects; Laser beams; Optical beams; Optical modulation; Optical receivers; Optical transmitters; Photonic crystal fibers; Radio frequency; Transmitting antennas; Dispersion; optical beamforming; phased-array antenna (PAA); photonic crystal fiber (PCF); true-time delay (TTD);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.916907
