Optical EngineeringVariable time-delay system for broadband phased array and other transversal filtering applications
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A variable time-delay system for broadband phased array receiving and other transversal filtering applications is presented. The approach uses a segmented mirror device (SMD) and a linear fiber array to realize a quantized variable delay line. The use of the SMD allows for extremely high packing density withoutthe large losses usually associated with switched fiber schemes. The system presented is compatible with a SMD-based true time-delay transmitter that has been developed. Experimental results are presented.