We propose the use of tuned electro-optic or electroabsorption external modulators to implement high-quality (high-Q) factor, single-bandpass photonic filters for microwave signals. Using this approach, we experimentally demonstrate a transversal finite impulse response with a Q factor of 237. This is to our knowledge the highest value ever reported for a passive finite impulse-response microwave photonic filter.
© 2005 Optical Society of America
(230.0230) Optical devices : Optical devices
J. Capmany, J. Mora, B. Ortega, and D. Pastor, "High-Q microwave photonic filter with a tuned modulator," Opt. Lett. 30, 2299-2301 (2005)