3D-Nanoprinted Fibre-to-Chip and Chip-to-Chip Coupler

Inhalt:
We present a versatile off-chip coupling solution using 3D nanoprinting for both fibre-to-chip and chip-to-chip connections. The design employs elliptical-shaped reflectors that manage mode-size-conversion over a wide bandwidth. We experimentally demonstrate 0.8dB fibre-to-chip and 2.8dB chip-to-chip coupling loss over a 140nm wavelength range.