Ultra-compact, Low V-L electro-optic Modulators Based on BaTiO3 Integrated on Silicon-on-insulator
Abstract
Approved for Public ReleaseThe main objective of the proposal is the development of a low noise, energy efficient, ultra-compact, wide band electro optic modulator (EOM) based on SOI-integrated-BaTiO3. The team will consider two types of EOMs, the microring modulator (MRM) and Mach-Zehnder interferometer (MZI). Both hybrid and monolithic approaches will be considered and we will investigate the effect of BaTiO3 (BTO) crystallographic polarization on the efficiency and loss of both MRM and MZI devices fabricated from waveguide structures supporting TE and TM mode propagation. We have already demonstrated compact (150-850 #m in size) TE mode MZIs based on the hybrid approach, with V#·L of about 0.4 V·cm. Low optical loss (~1 dB/cm) has been measured in intrinsic BTO, for slab mode propagation, before poling (for comparison LiNbO3-based devices offer 0.1 dB/cm loss). Thus, a primary goal of the program is to understand the origin of the relatively higher loss and develop mechanisms and device architectures to reduce optical loss. BTO has alsobeen demonstrated to exhibit a strong Pockels effect at frequencies up to 270 GHz. Our goal is to develop ultra-compact EOMs, with V#·L of about 0.2 V·cm, and less than 1 dB/cm loss, operating at frequencies up to 40 GHz at the telecom wavelength of 1.55 #m.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 24, 2024
- Source ID
- N000142412063
Entities
People
- Alexander A Demkov
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at Austin