Conference Publication Details
Mandatory Fields
Madamopoulos, Nicholas; Riza, Nabeel A.
Proceedings of SPIE, 3160, Optical Technology for Microwave Applications VIII, Optical Science, Engineering and Instrumentation '97
Switched photonic delay line for phased array antenna control using externally modulated microwave fiber-optic kink
Optional Fields
Phased array antennas Photonic beam-forming Photonic delay lines Polarization switching Ferroelectric liquid crystals External modulation fiber-optic link Modulation Phased array optics Fiber optics Signal attenuation Photonic integrated circuits Polarization Signal to noise ratio
San Diego, CA, USA
The first demonstration of a 4-bit binary photonic delay line using ferroelectric liquid crystal (FLC) devices and externally modulated S/C band fiber-optic link is presented. A Mach-Zehnder integrated-optic modulator is used to modulate the light. This photonic delay line uses FLC optical on/off devices for optical path switching and active polarization noise filtering. Three dimensional imaging optics and antireflection coated optics are used to minimize photonic delay line insertion losses and interchannel crosstalk. Signal-to-noise ratio measurements as well as interchannel isolation crosstalk analysis is performed.
Grant Details