Figure 4
From: Design of polarization-insensitive high-visibility silicon-on-insulator quantum interferometer
The normalized transmittances of the proposed directional coupler versus (a) MMI width (b) wavelength. TE polarization and Channel 1: red diamond; TE polarization and Channel 2: red solid; TM polarization and Channel 1: blue circle; TM polarization and Channel 2: blue dashed.
