Tunable and Compact SiP Quasi-Dichroic Filter with ≥ 10 dB/nm Roll-Off Across C- & L-bands

We report simulated performance for an integrated and compact silicon photonic quasi-dichroic filter with ≥10dB/nm roll-off and ≥20dB extinction ratio between pass and stop bands. Additionally, the cutoff wavelength and compensation for fabrication error are each thermally tunable. The functional dichroic bandwidth is $\approx$80nm, which spans most practical use cases.