The use of uncooled FP laser in microwave photonic filters

摘要

A microwave photonic filter that uses an uncooled Fabry-Perot (FP) laser as the optical source is presented, which can realize low-pass magnitude response and wide passband characteristic, by optically shaping the laser signal. The configuration can overcome the frequency and power drift of the uncooled FP laser by using a feedback structure. Experimental results demonstrate a 6-tap microwave photonic filter with a free spectral range (FSR) of 2.5 GHz.