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Phased-Array Optically Controlled Receiver Using a Serial Feed

By Boris Tsap Yian, Boris Tsap, Yian Chang, Harold R. Fetterman, A. F. J. Levi, David A. Cohen and Irwin Newberg


Extension of a new optically controlled serially fed phased-array system to the receive mode of operation has been demonstrated. Our system uses the pulsed nature of microwave radars in a manner similar to clocked systems used in digital configurations. This novel approach requires only the use of one tunable laser, one optical modulator, and one chirped fiber grating unit. In this letter, we present an experimental demonstration of a two-element serially fed wide frequency range receiver that validates the feasibility of this novel concept. Our system can be readily expanded with multiple elements and transmit/receive modules for a complete phased array system. Index Terms---Directional communications, fiber gratings, optical control, optical fiber delay line, phased-array radar. I. INTRODUCTION W E HAVE recently reported the development of a novel optically controlled phase array transmit configuration, suitable for numerous applications, including phased array radar and directio..

Year: 1998
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