Results 61 to 70 of about 39,830 (276)
Laser &Photonics Reviews, EarlyView.The miniaturization of metrology and precision spectroscopy systems requires robust, turn‐key microcombs with broad bandwidth, low threshold, and high efficiency. Here, high‐Q, dispersion‐engineered microresonators in a high‐confinement nonlinear SiC platform, combined with waveguide‐enabled thermal management and laser cooling, enable deterministic ...
Yi Zheng +7 more
wiley +1 more source
European Conference and Exhibition on Optical Communication, 2012 The present paper aims to describe other functionalities for an arrayed waveguide grating (AWG)-based device, showing that this widely used configuration can be designed not only to frequency multiplex/demultiplex wavelength division multiplexing (WDM) signals, but also to perform the discrete Fourier transform (DFT) and the discrete fractional Fourier
openaire +5 more sources
Non‐Uniform Programmable Photonic Waveguide Meshes
Laser &Photonics Reviews, EarlyView.Integrating defect cells into uniform hexagonal waveguide meshes overcomes the fundamental spectral and temporal limitations of programmable photonics. By leveraging the Vernier effect through non‐uniform coupled cavities, this architecture achieves a tenfold increase in free spectral range and ultra‐fast sampling times, paving the way for next ...
Cristina Catalá‐Lahoz, José Capmany
wiley +1 more source
III-V-on-silicon photonic devices for optical communication and sensing [PDF]
, 2015 In the paper, we review our work on heterogeneous III-V-on-silicon photonic components and circuits for applications in optical communication and sensing.
Abbasi, Amin +33 more
core +4 more sources
Laser &Photonics Reviews, EarlyView.This work demonstrates a high‐fidelity stability transfer from an optical reference to a high‐repetition‐rate microcomb using a mode‐locked laser bridge. By employing electro‐optic sampling timing detection, femtosecond‐level synchronization and 10−18‐level fractional frequency stability are achieved.
Changmin Ahn +4 more
wiley +1 more source
Trade-off between end-to-end reliable and cost-effective TDMA/WDM passive optical networks [PDF]
, 2012 Hybrid TDMA/VVDM (TWDM) Passive Optical Network (PON) is a promising candidate for Next-Generation PON (NG-PON) solutions. We propose end-to end reliable architectures for business users and a cost-effective network for residential users. We evaluate the
Colle, Didier +4 more
core +1 more source
Subthalamic Nucleus Deep Brain Stimulation Improves Kinetic Tremor in Parkinson's Disease
Movement Disorders Clinical Practice, EarlyView.Abstract Background Although resting tremor is a characteristic feature of Parkinson's disease (PD), many patients also suffer from action tremor. Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is effective in reducing motor symptoms. However, it is unclear to what extent STN‐DBS improves action tremor in PD, particularly kinetic tremor.
Iwan Grooters +8 more
wiley +1 more source
Muscle &Nerve, EarlyView.ABSTRACT Introduction Weight loss in people with amyotrophic lateral sclerosis (pwALS) is a poor prognostic factor. We aimed to develop an intervention to support pwALS to increase calorie intake and explore feasibility and acceptability. Methods Intervention development was underpinned by the Capability, Opportunity and Motivation (COM‐B) model and ...
Alys Wyn Griffiths +24 more
wiley +1 more source
Guangtongxin yanjiu, 2003 阵列波导光栅 （ AWG）复用 /解复用器的优化设计计算是集成光波导器件设计计算中的难点 .文章应用 AWG光信号传输特性和光栅方程 ,提出了 AWG组成部分输入 /输出波导、阵列波导、平板波导相关参数及阵列波导结构优化设计的数值计算方法 ,给出了具体的计算数值 ;该计算方法解决了 AWG复用器优化设计计算的问题 ,为进一步建立 AWG的计算机辅助设计提供了基础 .
郭爱煌, 傅君眉
doaj
External modulation method for generating accurate linear optical FMCW [PDF]
, 2017 Frequency modulation continuous wave (FMCW) lasers are key components in modern optical imaging. However, current intracavity modulation lasers do not exhibit low-frequency jitter rate and high linearity due to the inherent relaxation oscillations ...
Ge, Chunfeng +7 more
core +1 more source