Results 91 to 100 of about 66,231 (314)

Waveguide Geometry–Driven Trade‐Offs in Resonant Cavity Sensor Performance

Advanced Optical Materials, EarlyView.
Waveguide geometry governs the interplay between sensitivity, intrinsic Q‐factor, and wavelength noise in silicon nitride resonant sensors. Contrary to intuition, higher sensitivity does not ensure superior performance. Low‐noise, high‐Q ridge resonators achieve the lowest detection limits, revealing that detection is ultimately constrained by noise ...
Mohammad Talebi Khoshmehr, Bakiye Imran Akca, Mateusz Słowikowski, Drecka Dagmara, Marcin Juchniewicz, Ryszard Piramidowicz, Muhammad Ali Butt   +6 more
wiley   +1 more source

Performance Analysis of a Broadband Second-Order Mode Converter Based on Multimode Interference Coupler and Phase Shifter

IEEE Photonics Journal, 2015
A novel mode converter with broad bandwidth, high mode conversion efficiency, and large fabrication tolerance is proposed and fabricated on a silicon-on-insulator (SOI) platform.
Jifang Qiu, Daolin Zhang, Ye Tian, Jian Wu, Yan Li, Yue Wang   +5 more
doaj   +1 more source

UV laser-assisted fabrication of ridge waveguides in lithium niobate crystals

, 2010
We present a UV laser-assisted method for the fabrication of ridge waveguides in lithium niobate. The UV laser irradiation step provides the refractive index change required for the vertical light confinement in the waveguide and also defines the ...
Sones, C.L., Ganguly, P., Mailis, S., Soergel, E., Ying, C.Y.J., Eason, R.W.   +5 more
core  

Temporal quadratic solitons and their interaction with dispersive waves in Lithium Niobate nano-waveguides

, 2019
We present a model of soliton propagation in waveguides with quadratic nonlinearity. Criteria for solitons to exist in such waveguides are developed and two example nano-waveguide structures are simulated as proof of concept.
William R. Rowe (14406204), Andrey V. Gorbach (14406207), Dmitry V. Skryabin (4328860)   +2 more
core   +1 more source

Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Microfabrication using nano‐ to micron‐sized blocks has transformative potential for next‐gen electronics, optoelectronics, and materials. Traditional methods are limited by scalability and precision. STIC, a single‐laser system for precise colloid manipulation and immobilization using femtosecond lasers, is introduced that enables efficient 3D ...
Krishangi Krishna, Jieliyue Sun, Wenyu Liu, Robert H. Hurt, Kimani C. Toussaint Jr.   +4 more
wiley   +1 more source

A multi-layer platform for low-loss nonlinear silicon photonics

APL Photonics, 2019
We demonstrate four-wave mixing (FWM) interactions in a-Si:H waveguides in a multilayer integrated silicon photonic chip. The a-Si:H waveguides are accessed through interlayer couplers from waveguides composed of SiNx.
Neil MacFarlane, Michael R. Kossey, Jasper R. Stroud, Mark A. Foster, Amy C. Foster   +4 more
doaj   +1 more source

Spiral Waveguides on Germanium-on-Silicon Nitride Platform for Mid-IR Sensing Applications

IEEE Photonics Journal, 2018
Spiral waveguides on a new germanium-on-silicon nitride (GON) platform with a wide transparency and a large core-clad index contrast for mid-infrared (mid-IR) sensing applications are demonstrated. Spiral waveguide sensors with a low bending loss on this
Wei Li, P. Anantha, Kwang Hong Lee, Hao Dong Qiu, Xin Guo, Simon Chun Kiat Goh, Lin Zhang, Hong Wang, Richard A. Soref, Chuan Seng Tan   +9 more
doaj   +1 more source

Photonic crystal waveguides in chalcogenide glasses

, 2011
The growing speed and bandwidth requirements of telecommunication systems demand all-optical on-chip solutions. Microphotonic devices can deliver low power nonlinear signal processing solutions. This thesis looks at the slow light photonic crystals in
Spurny, Marcel
core  

Elimination of the chirp of optical pulses through cascaded nonlinearities in periodically poled lithium niobate waveguides

, 2010
We propose and demonstrate a novel method for the elimination of arbitrary frequency chirp from short optical pulses. The technique is based on the combination of two cascaded second-order nonlinearities in two individual periodically poled lithium ...
Lee, Kwang Jo, David J. Richardson, Gallo, Katia,, Periklis Petropoulos, Katia Gallo, Liu, Sheng, Petropoulos, Periklis, Gallo, Katia, Richardson, David J., Kwang Jo Lee, Sheng Liu   +10 more
core   +1 more source

UTact: Underwater Vision‐Based Tactile Sensor with Geometry Reconstruction and Contact Force Estimation

Advanced Robotics Research, EarlyView.
Embedded flexible sensing technologies advance underwater soft robotics, yet most systems still suffer from hysteresis and limited perceptiveness. Instead, vision‐based tactile sensors provide reliable and rapid feedback essential for complex underwater tasks.
Qiyi Zhang, Zonghao Zuo, Haoxuan Wang, Bin Liu, Yilidusi Yilihamu, Li Wen   +5 more
wiley   +1 more source