Photonic microwave reconfigurable filter based on a tunable polymeric ring resonator

An integrated photonic microwave reconfigurable filter was proposed and realized incorporating a tunable polymeric ring resonator. Its passband could be shaped electrically by shifting the resonant peaks of the resonator via the thermo-optic effect. As for the achieved performance, the center frequency was 20 GHz, the extinction ratio similar to 15 dB, the bandwidth 2 GHz, and the corresponding quality factor 10. The microwave output within the passband was varied efficiently by similar to 27 dB with the rate of similar to 6.7 dB/mW, while the wavelength tuning rate of the resonator was -0.02 nm/mW. (c) 2007 Elsevier B.V. All rights reserved.