Multilayer Silicon Nitride Photonic Coupling System for Monolithic Integration of III/V Lasers

We demonstrate the integration for a silicon laser by a silicon nitride coupling system on a multilayer photonic platform. The system exhibits large vertical coupling distance of
$\boldsymbol{1.4\mu \mathrm{m}}$
, broad optical working bandwidth
$\boldsymbol{> 58\text{nm}}$
and small footprint with coupling efficiency of −9.5 dB @ 1550nm.