Large, deterministic and tunable thermo-optic shift for all photonic platforms
B. Lopez Rodriguez (TU Delft - ImPhys/Esmaeil Zadeh group)
Naresh Sharma (TU Delft - ImPhys/Esmaeil Zadeh group)
Zizheng Li (TU Delft - ImPhys/Esmaeil Zadeh group)
R.J.H. van der Kolk (TU Delft - QN/Kavli Nanolab Delft, TU Delft - ImPhys/Esmaeil Zadeh group)
J. Van der Boom (TU Delft - Support EKL)
T.C. Scholte (TU Delft - ImPhys/Pereira group)
Jin Chang (TU Delft - QN/Groeblacher Lab)
S.F. Pereira (TU Delft - ImPhys/Pereira group)
I.Z. Zahed (TU Delft - ImPhys/Esmaeil Zadeh group)
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Abstract
Achieving high degree of tunability in photonic devices has been a focal point in the field of integrated photonics for several decades, enabling a wide range of applications from telecommunication and biochemical sensing to fundamental quantum photonic experiments. We introduce a novel technique to engineer the thermal response of photonic devices resulting in large and deterministic wavelength shifts across various photonic platforms, such as amorphous Silicon Carbide (a-SiC), Silicon Nitride (SiN) and Silicon-On-Insulator (SOI). In this paper, we demonstrate bi-directional thermal tuning of photonic devices fabricated on a single chip. Our method can be used to design high-sensitivity photonic temperature sensors, low-power Mach-Zehnder interferometers and more complex photonics circuits.