23 citations · 48 across the 7 of their papers we have counts for
7 papers
Weak optical modes for high-density and low-loss photonic circuit
Hamed Nikbakht, Bob van Someren, Manfred Hammer +1
Dielectric optical waveguides constitute the main building blocks of photonic integrated circuits (PICs). Channels with high refractive index contrast can provide very compact PIC…
An asymmetric non-uniform 3-dB directional coupler with 300-nm bandwidth
Hamed Nikbakht, Mohammad Talebi Khoshmehr, Bob Van Someren +4
Here, we demonstrate a new type of 3-dB coupler that has an ultra-broadband operational range starting from 1300 nm to 1600 nm with low fabrication sensitivity. Overall device size…
Flexible source of correlated photons based on LNOI rib waveguides
L. Ebers, A. Ferreri, M. Hammer +4
Lithium niobate on insulator (LNOI) has a great potential for photonic integrated circuits, providing substantial versatility in design of various integrated components. To properl…
Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides
Jan Philipp Höpker, Varun B. Verma, Maximilian Protte +10
We demonstrate the integration of amorphous tungsten silicide superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides. We show proof-of-…
Full resonant transmission of semi-guided planar waves through slab waveguide steps at oblique incidence
Manfred Hammer, Andre Hildebrandt, Jens Förstner
Sheets of slab waveguides with sharp corners are investigated. By means of rigorous numerical experiments, we look at oblique incidence of semi-guided plane waves. Radiation losses…
A variational mode solver for optical waveguides based on quasi-analytical vectorial slab mode expansion
Alyona Ivanova, Remco Stoffer, Manfred Hammer
A flexible and efficient method for fully vectorial modal analysis of 3D dielectric optical waveguides with arbitrary 2D cross-sections is proposed. The technique is based on expan…