Polarization-insensitive broadband 2 x 2 3 dB power splitter based on silicon-bent directional couplers

摘要

We present and demonstrate a broadband and polarizationinsensitive 2 x 2 3 dB power splitters based on silicon-bent directional couplers (DCs). The working bandwidth can be from 1520 to 1630 nm for both TE and TM polarizations, with an excess loss less than 1 dB. The total size for the fabricated device can be as small as 50 mu m, and the measurement results show good agreement with the simulations. (C) 2017 Optical Society of America