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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Advanced Optical Processing of Microwave Signals Beatriz Ortega | EURASIP Journal on Applied Signal Processing 2005 10 1462-1484 2005 Hindawi Publishing Corporation Advanced Optical Processing of Microwave Signals Beatriz Ortega Grupo de Comunicaciones Opticas ITEAM Universidad Politécnica de Valencia Camino de Vera s n 46022 Valencia Spain Email bortega@dcom.upv.es Daniel Pastor Grupo de Comunicaciones Opticas ITEAM Universidad Politécnica de Valencia Camino de Vera s n 46022 Valencia Spain Email dpastor@dcom.upv.es Jose Mora Grupo de Comunicaciones Opticas ITEAM Universidad Politécnica de Valencia Camino de Vera s n 46022 Valencia Spain Email jmalmer@iteam.upv. es Jose Capmany Grupo de Comunicaciones Opticas ITEAM Universidad Politeécnica de Valencia Camino de Vera s n 46022 Valencia Spain Email jcapmany@dcom.upv. es Miguel V. Andres Grupo de Semiconductors y Fibras Opticas ICMUV Universidad de Valencia Dr. Moliner 50 46100 Burjassot Valencia Spain Email miguel.andres@uv.es Received 16 April 2004 Revised 20 September 2004 The authors present a review on the recent approaches proposed to implement transversal RF filters. Different tunable transversal filters consisting of wavelength tunable optical taps and those employing the tunability of dispersive devices are presented showing their high-performance characteristics. A comprehensive review of the fundamentals and a discussion on the main limitation of these structures are also included. Keywords and phrases microwave photonics transversal filters optical fibers delay lines. 1. INTRODUCTION Over the last 25 years microwave photonics has been a discipline under constant active research because of the unique properties that photonic devices and systems bring to the generation transport processing and detection of microwave and millimeter wave signals 1 . The possibility of using photonic devices to implement flexible filters for microwave and radiofrequency RF signals with larger bandwidth is one of the applications that first attracted the interest of the researchers 2 3 4 5 6