All-optical microwave notch filter incorporating an S-bending-based wavelength-spacing tunable dual-wavelength fibre laser

摘要

A novel photonic microwave notch filter with capability of frequency tuning is demonstrated by using S-bending based wavelength-spacing tunable dual-wavelength fibre laser. Experimental results show that the notch rejection of more than 30 dB and the flexible tunability of notch frequency in the range of 1.4–6.7 GHz.