Conference Agenda

TOM1 S02: Silicon Photonics and Guided-Wave Optics
Wednesday, 14/Sept/2022:
9:00am - 10:30am

Session Chair: Graham Trevor Reed, University of Southampton, United Kingdom
Location: B116

1st floor, 70 seats

9:00am - 9:30am
ID: 378 / TOM1 S02: 1
TOM 1 Silicon Photonics and Guided-Wave Optics

Ge/SiGe quantum wells for mid infrared integrated photonics

Jacopo Frigerio

Politecnico di Milano, Polo Territoriale di Como - L-NESS Lab, Italy

Ge/SiGe quantum wells for mid infrared integrated photonics

9:30am - 9:45am
ID: 301 / TOM1 S02: 2
TOM 1 Silicon Photonics and Guided-Wave Optics

Hybrid integration methodology for quantum cascade lasers with germanium waveguides in mid-IR

Colin James Mitchell1, Ahmed Osman1, Ke Li1, Jordi S. Penadés1, Milos Nedeljković1, Longqi Zhou2, Kristian M. Groom2, Jon Heffernan2, Goran Mashanovich1

1University of Southampton, United Kingdom; 2University of Sheffield, United Kingdom

Mid-infrared quantum cascade lasers (QCLs) operating around 5.7 µm have been integrated with germanium waveguides on silicon substrates. QCL bars have been designed and fabricated at the University of Sheffield for the purpose of integration. This hybrid approach uses flip-chip technology that has been successfully transferred from a silicon-on-oxide (SOI) platform working at communication wavelengths, demonstrating the flexibility of this approach. Integration challenges are introduced, and solutions discussed, leading to the next iteration of design presented here.

9:45am - 10:15am
ID: 381 / TOM1 S02: 3
TOM 1 Silicon Photonics and Guided-Wave Optics

Visible single-photon avalanche detectors

Thomas Ang

A*STAR, Singapore

Visible Single-Photon Avalanche Detectors

10:15am - 10:30am
ID: 334 / TOM1 S02: 4
TOM 1 Silicon Photonics and Guided-Wave Optics

Polarization independent 2×2 multimode interference coupler with bricked subwavelength metamaterial

Carlos Pérez-Armenta1, Alejandro Ortega-Moñux1, José Manuel Luque-González1, Robert Halir1,2, Pedro J. Reyes-Iglesias1, Jens H. Schmid3, Pavel Cheben3, Íñigo Molina-Fernández1,2, J. Gonzalo Wangüemert-Pérez1,2

1Telecommunication Research Institute (TELMA) Universidad de Málaga, CEI Andalucía TECH, Louis Pasteur 35, 29010 Málaga; 2Bionand Center for Nanomedicine and Biotechnology, Parque Tecnológico de Andalucía, Málaga 29590, Spain; 3National Research Council Canada, Ottawa, Ontario K1A 0R6, Canada

The silicon-on-insulator (SOI) platform enables high integration density in photonic integrated circuits while maintaining compatibility with CMOS fabrication processes. Nevertheless, its inherently high modal birefringence hinders the development of polarization-insensitive devices. The dispersion and anisotropy engineering leveraging subwavelength grating (SWG) metamaterials makes possible the development of polarization agnostic waveguide components. In this work we build upon the bricked SWG metamaterial nanostructures to design a polarization independent 2×2 multimode interference (MMI) coupler for the 220 nm SOI platform, operating in the telecom O-band. The designed device exhibits a 160 nm bandwidth with excess loss, polarization dependent loss and imbalance below 1 dB and phase error lower than 5°.