Wavelength and Bandwidth Tunable Silicon Photonic Filter Over O+C+L Band

We propose and demonstrate a wavelength and bandwidth tunable silicon photonic filter over the O+C+L band using novel Mach-Zehnder interferometers and vernier microring resonators. All bands show ultra-high out-of-band extinction ratios over -35 dB. In C and L bands, the 3dB bandwidth can be tuned from 27.48 pm to 53.77 pm, with the total insertion loss varying from −2.31 dB to −11.27 dB. In the O band, the 3dB bandwidth varies from 4.74 pm to 23.4 pm, with the total insertion loss from −2.21 dB to −6.72 dB.