Experimental demonstration of high-Q MRR based on a germanium-on-insulator platform with an yttria insulator in the mid-IR range

J Lim, J Shim, I Kim, SH Kim - Photonics Research, 2023 - opg.optica.org
We experimentally demonstrate an all-pass microring resonator (MRR) based on a Y_2O_3
BOX germanium-on-insulator (GeOI) platform operating in the mid-IR region. The ring …

Freestanding Germanium Photonic Crystal Waveguide for a Highly Sensitive and Compact Mid-Infrared On-Chip Gas Sensor

I Kim, J Lim, J Shim, J Park, SY Ahn, H Lim… - ACS sensors, 2024 - ACS Publications
The performance of mid-infrared (MIR) on-chip gas sensors, operating via laser absorption
spectroscopy, hinges critically on light–matter interaction dynamics, significantly influenced …

Ultrasensitive Mid-Infrared Optical Gas Sensor Based on Germanium-on-Insulator Photonic Circuits with Limit-of-Detection at Sub-ppm Level

J Lim, J Shim, I Kim, SK Kim, H Lim, SY Ahn… - ACS …, 2024 - ACS Publications
Optical waveguide structures guiding a strongly localized field in an external region for mid-
IR integrated gas sensors using the IR tunable diode laser absorption spectroscopy …

[HTML][HTML] Thermally tunable microring resonators based on germanium-on-insulator for mid-infrared spectrometer

J Lim, J Shim, I Kim, SK Kim, DM Geum, S Kim - APL Photonics, 2024 - pubs.aip.org
We present a thermally tunable microring resonator (MRR) implemented on a Ge-on-
insulator (Ge-OI) photonic platform tailored for mid-infrared spectrometer applications …

Room-temperature waveguide-integrated photodetector using bolometric effect for mid-infrared spectroscopy applications

J Shim, J Lim, I Kim, J Jeong, BH Kim, SK Kim… - arXiv preprint arXiv …, 2024 - arxiv.org
Waveguide-integrated mid-infrared (MIR) photodetectors are pivotal components for
developing molecular spectroscopy applications, leveraging mature photonic integrated …

Design of GaSb-based monolithic passive photonic devices at wavelengths above 2 µm

MSI Sumon, S Sankar, W You, II Faruque… - Journal of Physics …, 2023 - iopscience.iop.org
In this paper, we report, for the first time, a theoretical study on passive photonic devices
including optical power splitters/combiners and grating couplers (GCs) operating at non …

Slot Track Micro Ring Assisted Mach Zender Interferometric Optical Electric Field Sensor

K Ke, Q Yang, N Chen, Z Zhang… - Journal of Lightwave …, 2024 - ieeexplore.ieee.org
Within the framework of “clean, low-carbon, and smart integration,” a pivotal element of the
global energy Internet digital transformation lies in sensing technology. This paper …

Fully CMOS-Compatible Room-Temperature Waveguide-Integrated Bolometer Based on Germanium-on-Insulator Platform at Mid-Infrared Operating Beyond 4 μm

J Shim, J Lim, I Kim, SK Kim, SY Ahn… - 2023 International …, 2023 - ieeexplore.ieee.org
We propose a novel concept of an uncooled waveguide-integrated bolometer on a Ge-on-
insulator (Ge-OI) platform at mid-infrared (MIR) wavelength of 4.18 μm. To induce heat …

Subwavelength grating coupler for mid-infrared light coupling to an ultra-thin silicon waveguide

C Zou, O Lang, R Guo, Y Wang, J Wang… - 2024 22nd …, 2024 - ieeexplore.ieee.org
Subwavelength grating coupler for mid-infrared light coupling to an ultra-thin silicon
waveguide Page 1 IEEE979-8-3503-6765-2/24/$31.00 ©2024 IEEE Subwavelength grating …

Numerical study on thickness-dependent crosstalk optimization in Germanium-on-Insulator platform

Y Shin, I Kim, SH Kim, S Kim - 2024 IEEE Silicon Photonics …, 2024 - ieeexplore.ieee.org
Germanium-on-Insulator (GOI) is an emerging integrated photonic platform for infrared
applications like gas sensing. Here, we numerically explore the effect of anisotropic …