Results 61 to 70 of about 3,885 (181)

Optical Neuromorphic Technology Catalyzes the Next‐Generation Mobile Communication Technology

Advanced Intelligent Systems, Volume 7, Issue 11, November 2025.
Advancements in optical computing could revolutionize next‐generation wireless communication. The review highlights the role of photonic integrated circuits in implementing neural network operations and discusses their benefits, such as high computational density.
Xiaoxiong Song, Ziling Fu, Jiajia Wang, Dapeng Wang, Nan Li, Zhenping Hu, Xingyuan Xu   +6 more
wiley   +1 more source

Cost efficient narrow linewidth laser transmitter for coherent detection [PDF]

, 2008
Authors present a cost efficient narrow linewidth laser transmitter for future coherent detection systems. The spectral purity of the laser allows the phase modulation of data signals at bit rates as low as 155 Mb ...
Anandarajah, Prince M., Barry, Liam P., Ellis, A.D., Kaszubowska-Anandarajah, Aleksandra, Kelly, Brian, Mishra, A.K., O'Gorman, J., Perry, Philip, Phelan, Richard, Reid, Douglas A.   +9 more
core   +1 more source

Interference fringe mitigation in short-delay self-heterodyne laser phase noise measurements

Optics Express
Self-heterodyne techniques are widely used for laser phase noise characterization due to their simple experimental setup and the removal need for a reference laser. However, when investigating low-noise lasers, optical delay paths shorter than the laser coherence length become necessary.
Jasper Riebesehl, David C. Nak, Darko Zibar   +2 more
openaire   +2 more sources

On the delayed self-heterodyne interferometric technique for determining the linewidth of fiber lasers

Optics Express, 2006
The delayed self-heterodyne interferometric technique, first proposed in the context of semiconductor lasers, has been commonly used for over 20 years in the determination of the optical linewidth of lasers. We examine this technique in the light of recent work on fiber lasers, and point out further constraints in the applicability of these ...
Horak, Peter, Loh, Wei H.
openaire   +3 more sources

Nanoscale Analysis beyond Imaging by Atomic Force Microscopy: Molecular Perspectives on Oncology and Neurodegeneration

Small Science, Volume 5, Issue 11, November 2025.
Cancer and neurodegeneration share interconnected nanosized molecular pathways. Novel nanobiomedicine approaches promise targeted biomarkers and therapies. Atomic force microscopy (AFM) is invaluable to characterize nanosized biomolecular processes beyond imaging.
Carlos Marcuello, KeeSiang Lim, Giacomo Nisini, Vadim S. Pokrovsky, João Conde, Francesco Simone Ruggeri   +5 more
wiley   +1 more source

Optical Chaos Generation and Applications

Advanced Photonics Research, Volume 6, Issue 9, September 2025.
This review comprehensively examines optical chaos generation via feedback, injection, and optoelectronic methods, emphasizing bandwidth enhancement and time‐delay suppression. Applications include chaos‐synchronized secure communication, physical random number generation, chaotic lidar for cm‐level detection, distributed fiber sensing, and terahertz ...
Wenhui Chen, Xiaoxin Mao, Junli Wang, Rong Zhang, Longsheng Wang, Zhiwei Jia, Pu Li, Anbang Wang, Yuncai Wang   +8 more
wiley   +1 more source

Quantum random number generation

, 2016
Quantum physics can be exploited to generate true random numbers, which play important roles in many applications, especially in cryptography. Genuine randomness from the measurement of a quantum system reveals the inherent nature of quantumness ...
Cao, Zhu, Ma, Xiongfeng, Qi, Bing, Yuan, Xiao, Zhang, Zhen   +4 more
core   +1 more source

Narrow Linewidth Laser Based on Extended Topological Interface States in 1D Photonic Crystals

Laser &Photonics Reviews, Volume 19, Issue 15, August 7, 2025.
This work introduces a novel 1D‐TISE‐PhC semiconductor laser structure achieving uniform photon distribution, reduced linewidth (126 kHz), robust single‐mode performance (SMSR up to 50 dB), precise wavelength control, and tolerance to fabrication variations, demonstrated experimentally in an eight‐channel array.
Xiao Sun, Zhibo Li, Yiming Sun, Yupei Wang, Jue Wang, John H. Marsh, Stephen J. Sweeney, Anthony E. Kelly, Lianping Hou   +8 more
wiley   +1 more source

Narrow-Linewidth Distributed Feedback Channel Waveguide Laser in Al$_2$O$_3$:Er$^{3+}$ [PDF]

, 2010
We report on the fabrication and characterization of a distributed feedback channel waveguide laser in erbium-doped aluminium oxide on a standard thermally oxidized silicon substrate.
Agazzi, L., Bernhardi, E.H., Pollnau, M., Ridder, R.M. de, Wörhoff, K.   +4 more
core   +1 more source

Hybrid Encoder for Discrete and Continuous Variable QKD

Advanced Quantum Technologies, Volume 8, Issue 8, August 2025.
This work demonstrates a hybrid QKD encoder that bridges the advantages of discrete and continuous variables. Utilizing a self‐compensating iPOGNAC design, the encoder is compatible with space‐based and terrestrial quantum networks. The approach simplifies system complexity, improves stability, and ensures cost‐effective integration, paving the way for
Mattia Sabatini, Tommaso Bertapelle, Paolo Villoresi, Giuseppe Vallone, Marco Avesani   +4 more
wiley   +1 more source