Results 101 to 110 of about 50,260 (318)

Waveguiding and photoluminescence in Er³⁺-doped Ta₂O₅ planar waveguides [PDF]

, 2009
The optimization of erbium-doped Ta2O5 thin film waveguides deposited by magnetron sputtering onto thermally oxidized silicon wafer is described. Optical constants of the film were determined by ellipsometry.
OTON NIETO, CLAUDIO JOSE, Wilkinson, James S., Claudio J. Oton, Robert Greef, Ananth Z. Subramanian, Subramanian, Ananth Z., James S. Wilkinson, Oton, Claudio J., Greef, Robert, Subramanian, Ananth Z   +9 more
core   +1 more source

Simultaneous Multi-Core Fiber-to-Fiber Self-Coupling With Near-Infrared Light-Induced Self-Written Optical Waveguide

IEEE Access
Multi-core fibers (MCF) and multichannel optical waveguides have garnered significant attention as viable technologies for enhancing transmission capacity.
Tsuyoshi Namekawa, Hidetaka Terasawa, Keisuke Kondo, Okihiro Sugihara   +3 more
doaj   +1 more source

Comparative Study of Nano-Slot Silicon Waveguides Covered by Dye Doped and Undoped Polymer Cladding

Applied Sciences, 2018
Nonlinear optical dyes doped in optical polymer matrices are widely used for electro-optical devices. Linear optical properties change with dye concentration, which leads to a change in modal properties, especially in nano-structured integrated ...
Siegfried Bondarenko, Claus Villringer, Patrick Steglich   +2 more
doaj   +1 more source

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

Analysis of Mode Characteristics in Semiconductor Lasers With Asymmetric Coupled Cavities Based on Quasi Parity-Time

IEEE Photonics Journal
This study presents a novel asymmetrically coupled cavity (ACC) semiconductor laser structure designed to achieve stable single-mode operation in wider ridge waveguides, enhancing output power.
Tianqi Zhang, Yinli Zhou, Gaohui Yuan, Jingfei Mu, Jianwei Zhang, Chao Chen, Zhuo Zhang, Tianjiao Liu, Xiaoyan Gao, Yu Cao, Yongqiang Ning, LiJun Wang   +11 more
doaj   +1 more source

Optical Planar Waveguide Sensor with Integrated Digitally-Printed Light Coupling-in and Readout Elements

Sensors, 2019
Optical planar waveguide sensors, able to detect and process information from the environment in a fast, cost-effective, and remote fashion, are of great interest currently in different application areas including security, metrology, automotive ...
Jorge Alamán, María López-Valdeolivas, Raquel Alicante, Carlos Sánchez-Somolinos   +3 more
doaj   +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

Highly efficient coupling between a monolithically integrated photonic crystal cavity and a bus waveguide

, 2012
We experimentally demonstrate a new optical filter design comprising of a photonic crystal cavity and a low index bus waveguide which are monolithically integrated on a silicon-on-insulator (SOI) platform.
Ferrera, Marcello, Krauss, Thomas Fraser, Lidzey, David, Thomas F. Krauss, O'Faolain, Liam, Kieran Deasy, Debnath, Kapil, Karl Welna, Welna, Karl Peter, David Lidzey, Liam O'Faolain, Kapil Debnath, Deasy, Kieran, Marcello Ferrera   +13 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

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

Advanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source