BTO-silicon photonic integrated circuits for optical communications
The presentation will be in English / La présentation sera en anglais.
Abstract:
The demand for continuous increase in the bandwidth of optical transceivers creates a need for technological innovation of photonic integrated circuits (PICs). In particular, the modulators are often the limiting electro-optic component. Silicon photonics has provided a scalable platform for small, cost-effective, and highly integrated PICs, but silicon-based modulators have limited bandwidth and relatively large insertion-loss.
Barium titanate (BTO) has emerged as a material for high-speed, low-loss electro-optic modulators that can be integrated into silicon photonic platforms. It is a stable oxide material, with large Pockels coefficients that can be produced on 300 mm wafers, which enables high-performance transmitter PICs with the same level of integration as silicon photonics.
This talk will review the work that has been done by various researchers to develop BTO as a photonic platform, including various device demonstrations, the integration with silicon photonics, and its potential for applications in different fields. It will also discuss the commercial 200 mm BTO-silicon platform that Lumiphase has developed and the recent PIC demonstrations.
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- McGill University
- 3480 rue University
- Montreal, Quebec
- Canada H3A 0C3
- Building: McConnell Engineering building
- Room Number: MC603
- Starts 26 March 2026 04:00 AM UTC
- Ends 17 April 2026 04:00 AM UTC
- No Admission Charge
Speakers
Felix Eltes of Lumiphase
BTO-silicon photonic integrated circuits for optical communications
Abstract:
The demand for continuous increase in the bandwidth of optical transceivers creates a need for technological innovation of photonic integrated circuits (PICs). In particular, the modulators are often the limiting electro-optic component. Silicon photonics has provided a scalable platform for small, cost-effective, and highly integrated PICs, but silicon-based modulators have limited bandwidth and relatively large insertion-loss.
Barium titanate (BTO) has emerged as a material for high-speed, low-loss electro-optic modulators that can be integrated into silicon photonic platforms. It is a stable oxide material, with large Pockels coefficients that can be produced on 300 mm wafers, which enables high-performance transmitter PICs with the same level of integration as silicon photonics.
This talk will review the work that has been done by various researchers to develop BTO as a photonic platform, including various device demonstrations, the integration with silicon photonics, and its potential for applications in different fields. It will also discuss the commercial 200 mm BTO-silicon platform that Lumiphase has developed and the recent PIC demonstrations.
Biography:
Felix Eltes received his PhD (2019) from ETH Zurich for research on BTO photonics carried out at IBM Research – Zurich. After finishing his PhD, he co-founded Lumiphase to develop commercial BTO-silicon photonics for optical communications.