Photonic Crystal Fiber Beamformer for Multiple X -Band Phased-Array Antenna Transmissions

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 trans...

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Veröffentlicht in:	IEEE photonics technology letters 2008-03, Vol.20 (5), p.375-377
Hauptverfasser:	Chen, M.Y., Subbaraman, H., Chen, R.T.
Format:	Artikel
Sprache:	eng
Schlagworte:	Antenna arrays Antennas Beams (radiation) Delay effects Dispersion Dispersions Laser beams Lasers optical beamforming Optical beams Optical fibers Optical modulation Optical receivers Optical transmitters phased-array antenna (PAA) photonic crystal fiber (PCF) Photonic crystal fibers Photonic crystals Radio frequencies Radio frequency Transmitting antennas true-time delay (TTD) Wavelengths
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Beschreibung
Zusammenfassung:	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.
ISSN:	1041-1135 1941-0174
DOI:	10.1109/LPT.2008.916907