Efficient Phase Shifter with Inkjet-Printed Liquid Crystal on an Integrated Photonics Platform
Year: 2025
Type: conference-paper
Abstract: In large interferometric circuits on SOI-platforms a high number of phase tuners is required to control the flow of light. Furthermore, reconfigurable circuits rely on the control of the phase in each arm of a balanced Mach-Zehnder interferometer (MZI) to create a 2x2 coupler with full control on the coupling and phase difference between the output ports [1]. Consequently, such circuits require a large amount of phase shifters densely integrated on the chip surface. To enable this, each phase shifter should have a 2π tuning range at a low voltage to ease to co-integration with the driver electronics. Furthermore, as the mesh size increases the insertion loss (IL) should be limited to avoid signal degradation. Since these devices are densely integrated in such circuits, both the footprint and optical length should be as small as possible while avoiding cross-talk between neighbouring devices.
Authors: Lukas Van Iseghem, Umar Khan, Ewout Picavet, Pierre Edinger, Alain Yuji Takabayashi, Peter Verheyen, Niels Quack, Kirstin B. Gylfason, Klaartje De Buysser, Jeroen Beeckman, Wim Bogaerts
Language: English
Topic: Photonic and Optical Devices
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4413458589