Abstract
A multitap negative and positive coefficient radio-frequency transversal filter is implemented by using a digital-micromirror-device spatial light modulator for weighting-factor control and a chirped fiber Bragg grating for time-delay control. The demonstrated architecture is reconfigurable, has high speed and low loss, and is robust through digital programmability for a wide variety of filtering algorithms. A design using an interleaver for differential detection realizes an ultrahigh bandwidth with a maximum processable frequency of . A multitap low-pass filter, a negative tap notch filter with attenuation, and a multitap negative coefficient bandpass filter are experimentally demonstrated. The results are in agreement with theory.
© 2006 Optical Society of America
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