The cleanroom

See below for an overview of the work performed by the team creating the active nanophotonic platform and also designers on the MPW platform.


Competitive performance, including high side-mode-suppression ratio (SMSR) lasers, ultrafast photodiodes, and significant improvement in critical dimension control.
Indium Phosphide Membrane Nanophotonic Integrated Circuits on Silicon, appearing in Physica Status Solidi (A), vol. 217, p. 1900606, 2020.


An overview of recent developments regarding technology and devices, including include low propagation losses, plasmonic waveguides, a variety of laser structures, and improved wavelength demuliplexers.

InP Membrane on Silicon (IMOS) Photonics, appearing in IEEE Journal of Quantum Electronics, vol. 56, pp. 1-7, 2020.


High speed devices

A perspective showing the high potential for breaking speed, energy and density bottlenecks in conventional photonic integration technologies. This paper explains the concept of the InP membrane, discusses the versatility of various technology approaches and reviews the recent advances in this field.

InP membrane integrated photonics research, appearing in Semiconductor Science and Technology, vol. 36, p. 013001, 2020.

Photon anti-bunching

The antibunching properties of multiple single photons located are confirmed at distinct optical modes in a quantum frequency comb. These are generated by cavity-enhanced spontaneous four-wave mixing in an InP membrane micro-ring resonator. Research performed with the team at the Chinese University of Hong Kong.

InP membrane micro-ring resonator for generating heralded single photons, appearing in Journal of Optics, vol. 21, p. 115201, 2019.


Phase change materials

The first successful integration of integrating non-volatile phase change material (PCM) on InP photonic circuits. Strong light-matter interaction is guaranteed by the IMOS waveguide, even when the PCM is as thin as 30 nm. This leads to a giant phase shift of p in a length of only 20 mm. This also showcases that IMOS is a suitable platform to investigate novel photonic materials. Research performed with the team at the Singapore University of Technology and Design.

Reconfigurable InP waveguide components using the Sb2S3 phase change material, accepted in Journal of Optics,

Ultrasharp bends

The investigation of the validity of the coupled mode theory (CMT) applied to directional coupler structures with high index contrast and study the effect of different topological choices including ultra sharp corner bends and the effect of fabrication tolerances on the different guided mode polarizations. Research performed with the team at University of Bologna

Experimental characterization of directional couplers in InP photonic membranes on silicon

(IMOS), appearing in OSA Continuum, vol. 2, pp. 2844-2854, 2019.

Quantum interference

Measurements using photon pairs generated via cavity enhanced spontaneous four-wave mixing. The circuit comprises an indium phosphide membrane micro-ring resonator and research is performed with the Chinese University of Hong Kong.

Entangled photon pair generation from an InP membrane micro-ring resonator, appearing in Applied Physics Letters, vol. 114, pp. 021104, 2019.


Optical beam-forming

A compact beamformer exhibiting a large steering angle (±90˚ at 26 GHz), high throughput (12 Gbps), and fast reconfiguration time (~250 ns) has been demonstrated in collaboration with the Electro-optic Communications research group at TU/e.

Photonic-assisted wideband RF beamformer on InP membrane on silicon platform, appearing in the 26th Optoelectronic and Communications Conference (OECC) virtual meeting, paper W4C.3., 2021.