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We propose and demonstrate experimentally a novel microwave-photonic filter using a variable polarization delay line based on a high-birefringence linear chirped fiber Bragg grating. The filter is free from the problems associated with the optical coherence interference of the laser. It provides a continuous tuning capability without the need to change the wavelength of the input optical carrier, and offers high resolution filtering for real-time signal processing in radio frequency systems.
Date of Publication: May 2003