Results 41 to 50 of about 1,276 (131)

Synchronous Clock Recovery of Photon-Counting Underwater Optical Wireless Communication Based on Deep Learning

Photonics, 2022
In photon-counting underwater optical wireless communication (UOWC), the recovery of the time slot synchronous clock is extremely important, and it is the basis of symbol synchronization and frame synchronization.
Haodong Yang, Qiurong Yan, Ming Wang, Yuhao Wang, Peng Li, Wei Wang   +5 more
doaj   +1 more source

Rotating Fluorescent Nanodiamond Assemblies With Focused Laguerre–Gaussian Beams

Advanced Optical Materials, Volume 14, Issue 31, August 21, 2026.
Self‐assembled fluorescent nanodiamond clusters are optically trapped and driven into controlled two‐dimensional rotation with Laguerre–Gaussian beams. With localized optical excitation, optically detected magnetic resonance spectra are collected at defined points along the orbit in a uniform external magnetic field.
Adam Stewart, Anthony J. El‐Helou, Ying Zhu, David McGloin, David A. Simpson, Peter J. Reece   +5 more
wiley   +1 more source

Supercritical Angle Fluorescence and Raman Techniques in Biophotonics

Laser &Photonics Reviews, Volume 20, Issue 15, 7 August 2026.
Supercritical angle fluorescence (SAF) microscopy and supercritical angle Raman (SAR) spectroscopy have emerged as powerful tools in the field of biophotonics, enabling high‐resolution imaging and spectroscopy of biological specimens near interfaces. This review article provides a comprehensive overview of the principles, techniques, applications, and ...
Subir Das, Nathalia Simea Münch, Stefan Seeger   +2 more
wiley   +1 more source

Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies

Laser &Photonics Reviews, Volume 20, Issue 15, 7 August 2026.
Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil, Rajshree Swarnkar, Jonas L. Moos, Sebastian Töpfer, Sergio Tovar‐Pérez, Jorge Fuenzalida, Markus Gräfe   +6 more
wiley   +1 more source

Weaving Intelligence: Thermally Drawn Multimaterial Fibers Toward AI‐Enabled Smart Textiles

Advanced Materials, Volume 38, Issue 40, 17 July 2026.
Thermally drawn multimaterial fibers are rapidly advancing as intelligent structural units for next‐generation smart textiles. Integrating multimaterial architectures with neuromorphic and spiking‐neural‐network principles enables fabrics that can sense, compute, and adapt autonomously.
Vuong Dinh Trung, Jiaxiang Yi, Hieu Nguyen‐Duc, Tien Nu Hoang Lo, Weili Zhao, Chaoqun Dong, Fabien Sorin, Baris Caglar, Lei Wei, Tung Nguyen‐Dang   +9 more
wiley   +1 more source

Wireless, Deep‐Seeing Smart Pill: A NIR‐II Fluorescence Imaging Capsule Endoscope for Gastrointestinal Cancer

Advanced Science, Volume 13, Issue 42, 28 July 2026.
A novel near‐infrared‐II fluorescent imaging capsule endoscope that detects specific fluorescence signals above 900 nm enables highly sensitive, targeted imaging of gastrointestinal cancer tissue. This wirelessly powered and magnetically controlled “smart pill” achieves high sensitivity and deep tissue penetration, allowing precise, non‐invasive ...
Weicheng Wang, Jinlei Jiang, Zhengting Wang, Shuqi Liu, Wei Wang, Xi Chen, Qirui Zhao, Xinyuan Cui, Cheng Zhou, Shengsheng Cui, Daxiang Cui   +10 more
wiley   +1 more source

Time-Domain Fluorescence Lifetime Imaging Techniques Suitable for Solid-State Imaging Sensor Arrays

Sensors, 2012
We have successfully demonstrated video-rate CMOS single-photon avalanche diode (SPAD)-based cameras for fluorescence lifetime imaging microscopy (FLIM) by applying innovative FLIM algorithms. We also review and compare several time-domain techniques and
Robert K. Henderson, Jochen Arlt, David Tyndall, Justin Richardson, Daniel R. Matthews, Viput Visitkul, Richard Walker, David Day-Uei Li, Simon Ameer-Beg   +8 more
doaj   +1 more source

Security‐Enhanced Differential Binary‐Phase‐Shift‐Keying Quantum Key Distribution With a Wavelength‐Switchable Single‐Photon Carrier

Advanced Photonics Research, Volume 7, Issue 6, June 2026.
A single‐chip dual‐wavelength coherent photon source is proposed to add parametric uncertainty and improve the security of single‐photon differential binary‐phase‐shift‐keying quantum key distribution. This wavelength‐uncertain coding or decoying operation enables flexible and secure D‐BPSK‐QKD transmission over a wavelength‐division‐multiplexed ...
Sze‐En Lai, Chih‐Hsien Cheng, Atsushi Matsumoto, Kouichi Akahane, Gong‐Ru Lin   +4 more
wiley   +1 more source

A Fully Digital Indirect Time-of-Flight Image Sensor With Multi-Frame Integration and Time-Gated Single-Photon Counting Method

IEEE Access
This paper presents an indirect time-of-flight (iToF) image sensor, based on a single-photon avalanche diode (SPAD) and a time-gated single-photon counting (TGSPC) method.
Byungchoul Park, Hyeon-June Kim
doaj   +1 more source

Modeling and Analysis of BER Performance in a SPAD-Based Integrated Fiber Optical Receiver

IEEE Photonics Journal, 2018
An analytical approach to model and analysis of the bit-error ratio (BER) performance in multi-single photon avalanche diode (SPAD) optical receivers is presented.
Hiwa Mahmoudi, Michael Hofbauer, Bernhard Steindl, Kerstin Schneider-Hornstein, Horst Zimmermann   +4 more
doaj   +1 more source