Results 91 to 100 of about 35,955 (312)

Guided acoustic and optical waves in silicon-on-insulator for Brillouin scattering and optomechanics

APL Photonics, 2016
We numerically study silicon waveguides on silica showing that it is possible to simultaneously guide optical and acoustic waves in the technologically important silicon on insulator (SOI) material system.
Christopher J. Sarabalis, Jeff T. Hill, Amir H. Safavi-Naeini   +2 more
doaj   +1 more source

Modelling of the effects of thermal gradients on optical propagation in polymer multimode tapered waveguides in optical backplanes

, 2004
Finite difference beam propagation modelling (FD-BPM) calculates the effect of thermal gradients in an optical backplane on the optical field propagation in a polymer multimode linearly tapered waveguide.
Rashed, A.M., Selviah, D.R.
core  

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Advances in modified gallium lanthanum sulphide (Ga:La:S) glass for optical fibre devices

, 2001
The advantages of gallium lanthanum sulphide (GLS) based glass over other competing glasses for active and infrared applications are evident through its low-phonon energy, high rare-earth solubility, high transition temperature and non-toxicity.
Harwood, D.W.J., Fu, A., Petrovich, M., Arshad K. Mairaj, A. Fu, L.N. Ng, N. G. Broderick, Mairaj, A., Daniel W. Hewak, Petrovich, Marco N., Monro, T.M., Harwood, D., Hewak, D., Mairaj, Arshad K., Tanya M. Monro, D. W. J. Harwood, West, Y., Monro, T., Broderick, N., Yvonne D. West, Marco N. Petrovich, Broderick, N.G., Ng, L., West, Yvonne D., Ng, L.N.   +24 more
core   +1 more source

Broadband single-mode microfiber coupler for OCT [PDF]

, 2009
We present a bi-conical microfiber coupler (MFC) with a specifically designed transition region as an efficient tool to filter higher-order modes in multimode waveguides.
David J. Richardson, Jung, Y., Richardson, D.J., Gilberto Brambilla, Brambilla, G., Yongmin Jung   +5 more
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

All-optical signal processing using cascaded quadratic interactions in periodically poled lithium niobate waveguides

, 2012
This thesis investigates all-optical signal processing using cascaded quadratic nonlinearities in periodically poled lithium niobate (PPLN) waveguides for telecommunication applications.
Liu, Sheng
core  

Record Performance in Vertically Stacked, Solution‐Processed ZTO Schottky Diodes

Advanced Materials Technologies, EarlyView.
Schottky diodes based on solution processed sustainable zinc—tin–oxide thin films present an eco‐friendly and versatile alternative to conventional CMOS based technologies. Beyond state‐of‐the‐art performance for vertically stacked solution‐based oxide diodes was achieved, including rectification ratios exceeding nine orders of magnitude, and intrinsic
Carlos Silva, Asal Kiazadeh, Raquel Azevedo Martins, António Dias, Jorge Martins, Luís Mendes, João Vaz, Rodrigo Martins, Elvira Fortunato, Emanuel Carlos, Jonas Deuermeier   +10 more
wiley   +1 more source

High-index contrast waveguides for microparticle guidance

, 2008
Design, fabrication and optimization of high refractive-index contrast Tantalum Pentoxide (Ta2O5) nanoscale waveguides are reported. The strong evanescent field in such nanoscale (150nm-250nm thick) and high-refractive index contrast (Delta.n ~ 0.65 ...
Ahluwalia, B.S., Hellesø, O.G., Subramanian, A.Z., Wilkinson, J.S.   +3 more
core  

Proposal for a simple polarization converter based on integrated optical ion exchanged waveguide [PDF]

, 2010
A simple, compact, low-cost electro-optic polarization converter based on a nematic liquid crystal (LC) sandwiched between two ion-exchanged glass channel waveguides is proposed.
Zheng, Jie, Farrell, G., null Pengfei Wang, null Qiang Wu, Semenova, Y., Semenova, Yuliya, Brambilla, G., G. Brambilla, Wu, Qiang, Brambilla, Gilberto, G. Farrell, Farrell, Gerald, Y. Semenova, Wang, Pengfei, null Jie Zheng   +14 more
core   +1 more source