Abstract
AbstractA novel tunable coherence‐free microwave photonic filter configuration is presented. This all‐optical structure realizes negative taps and works as a bandpass notch filter. The configuration is based on a Sagnac loop interferometer containing a single‐drive intensity modulator and a polarization‐maintaining semiconductor optical amplifier that generates phase difference between the clockwise and counterclockwise propagating waves inside the Sagnac loop. Measured results demonstrate a robust tunable bandpass notch response. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 225–226, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23044
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