Results 61 to 70 of about 19,917 (275)

Volume diffraction gratings for optical telecommunications applications: design study for a spectral equalizer [PDF]

, 2004
The main characteristics required for a diffraction grating used for demultiplexing functions in spectral equalizing systems are investigated, both theoretically and experimentally.
Chevallier, Raymond, Heggarty, Kevin, Loukina, Tatiana, Massenot, Sébastien, Shigapova, N.M., Skochilov, A.F   +5 more
core   +3 more sources

Applying implicit training to polarization-division-multiplexed coherent optical systems

Optics Express, 2013
We report the use of implicit training-aided channel estimation (ITA-CE) for polarization-division-multiplexed (PDM) single-carrier coherent optical systems. With the concept of ITA-CE, where the training sequence (TS) is arithmetically added onto the information symbols rather than appearing in separate time slots, overhead-free transmission can be ...
Chen, Zhu, An V, Tran, Fabio, Pittalà, Fabian N, Hauske, Trevor, Anderson, Efstratios, Skafidas   +5 more
openaire   +2 more sources

Exploring the Potential of Zero‐Dimensional Carbon Nanomaterials in Photoluminescent, Electrochemiluminescent and Electrochemical Sensors

Advanced Materials Interfaces, EarlyView.
Zero‐dimensional carbon nanomaterials are presented as multifunctional platforms linking structure, property, and sensing performance. Surface engineering and heteroatom doping modulate electron‐transfer and luminescent behavior, enabling electrochemical, photoluminescent, and electrochemiluminescent detection. Fundamental design principles, analytical
Gustavo Martins, Jeferson Luiz Gogola, Ava Gevaerd, Cristiane Kalinke, Paulo Roberto de Oliveira, Fabio Roberto Caetano, Bruno Campos Janegitz, Márcio Fernando Bergamini, Luiz Humberto Marcolino‐Junior   +8 more
wiley   +1 more source

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

State-of-the-Art and Perspectives on Silicon Waveguide Crossings: A Review

Micromachines, 2020
In the past few decades, silicon photonics has witnessed a ramp-up of investment in both research and industry. As a basic building block, silicon waveguide crossing is inevitable for dense silicon photonic integrated circuits and efficient crossing ...
Sailong Wu, Xin Mu, Lirong Cheng, Simei Mao, H.Y. Fu   +4 more
doaj   +1 more source

Frequency Multiplexing for Quasi-Deterministic Heralded Single-Photon Sources

, 2016
Single-photon sources based on optical parametric processes have been used extensively for quantum information applications due to their flexibility, room-temperature operation and potential for photonic integration.
Clemmen, Stéphane, Farsi, Alessandro, Gaeta, Alexander L., Joshi, Chaitali, Ramelow, Sven   +4 more
core   +2 more sources

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

Emergence of highly profibrotic and proinflammatory Lrat+Fbln2+ HSC subpopulation in alcoholic hepatitis

Hepatology, EarlyView., 2022
Lrat+ quiescent hepatic stellate cells (qHSC) give rise to Lrat+Fbln2+ activated HSC (aHSC) in alcohol‐associated hepatitis and this subpopulation is highly profibrotic, inflammatory, and immunoregulatory based on their single cell transcriptomic profile. Abstract Background and Aims Relative roles of HSCs and portal fibroblasts in alcoholic hepatitis (
Steven Balog, Reika Fujiwara, Stephanie Q. Pan, Khairat B. El‐Baradie, Hye Yeon Choi, Sonal Sinha, Qihong Yang, Kinji Asahina, Yibu Chen, Meng Li, Matthew Salomon, Stanley W.‐K. Ng, Hidekazu Tsukamoto   +12 more
wiley   +1 more source

Four Wave Mixing-Based Time Lens for Orthogonal Polarized Input Signals

IEEE Photonics Journal, 2017
We present highly efficient time-lenses for orthogonal polarized signal waves with a specific state of polarization. Our four-wave mixing based time-lenses exploit polarization mode dispersion to compensate for chromatic dispersion.
Avi Klein, Shir Shahal, Gilad Masri, Hamootal Duadi, Moti Fridman   +4 more
doaj   +1 more source

Strong Anisotropy of Multilayer γ‐InSe‐Enabled Polarization Division Multiplexing Photodetection

Advanced Photonics Research, 2022
Polarized light detection is consequential for optical communication and polarized light imaging. InSe is considered a promising candidate for narrow‐bandgap photodetector. However, monolayer γ‐InSe is an indirect bandgap semiconductor and is ignored for
Xusheng Wang, Bo Wen, Siyan Gao, Xiaolin Li, Zezhou Lin, Luping Du, Xi Zhang   +6 more
doaj   +1 more source