Manuel Ackermann

RWTH Aachen University · Chair for Integrated Photonic

We demonstrate an O-band resonantly enhanced Mach–Zehnder modulator utilizing highly overcoupled resonators with staggered resonance wavelengths that achieves an operating range of 6.6 nm (7.1 nm) with a 1 dB (3 dB) optical modulation amplitude penalty. It can be operated in a power-efficient lumped-element configuration without any tuning of the r...

We demonstrate a resonantly enhanced Mach-Zehnder modulator utilizing highly overcoupled ring resonators with staggered resonances to achieve a 7-nm 1-dB- penalty operating range. It can be operated lumped element without tuning any of the resonators.

We demonstrate a flow cytometer in which structured light illumination is used to attribute fluorescent and scattering signals to their excitation wavelength. A suitable multi-color light source emitting structured illumination patterns at 405, 488, 561 and 640 nm is developed based on a silicon nitride photonic integrated circuit and cytometry exp...

Silicon photonics ring resonators in rib waveguide configuration are among the most important components for wavelength-division-multiplexed communication networks. While the rib waveguide enables simple electrical connectivity in microring modulators and add-drop multiplexers, it also results in unacceptable bending losses once the circumference i...