Microscale mode-selective photonic lantern multiplexer compatible with 3D nanoprinting technology

We design mode-selective photonic lantern multiplexer using 3D waveguides made of photopolymer core and air cladding. Although the waveguides exhibit high index contrast, low loss (0.14dB), MDL (-0.06db), and mode group crosstalk (-21.2dB) are obtained. © 2022 The Author(s)