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Frequency agile microwave photonic notch filter with anomalously high stopband rejection

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Abstract

We report a novel class microwave photonic (MWP) notch filter with a very narrow isolation bandwidth (10 MHz), an ultrahigh stopband rejection (>60dB), a wide frequency tuning (1–30 GHz), and flexible bandwidth reconfigurability (10–65 MHz). This performance is enabled by a new concept of sideband amplitude and phase controls using an electro-optic modulator and an optical filter. This concept enables energy efficient operation in active MWP notch filters, and opens up a pathway toward enabling low-power nanophotonic devices as high-performance RF filters.

© 2013 Optical Society of America

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