Results 71 to 80 of about 391,142 (222)
Rayleigh Fading Suppression in One-Dimensional Optical Scatters
IEEE Access, 2019 A highly coherent wave is favorable for applications in which phase retrieval is necessary, yet a high-coherence wave is prone to encounter Rayleigh fading phenomenon as it passes through a medium of random scatters.
Shengtao Lin +8 more
doaj +1 more source
Space-division multiplexing for fiber-wireless communications [PDF]
, 2018 We envision the application of optical Space-division Multiplexing (SDM) to the next generation fiber-wireless communications as a firm candidate to increase the end user capacity and provide adaptive radiofrequency-photonic interfaces. This approach relies on the concept of fiber-distributed signal processing, where the SDM fiber provides not only ...
arxiv +1 more source
Coherent perfect absorption in a weakly absorbing fiber [PDF]
arXiv, 2017 Short-length fiber lasers are key elements for device integration in fiber systems. However, efficiently absorbing a pump beam in a short ion-doped fiber remains a challenge. We present an approach that renders a weakly absorbing short-length Er-doped fiber completely absorbing.
arxiv
Security and SafetyIn this paper, we study an unmanned aerial vehicle (UAV)-assisted communication system, where the UAV is dispatched to implement simultaneous transmission and reception (STR) in the existence of multiple malicious jammers.
Huang Zhiyu +4 more
doaj +1 more source
Introduction to microstructured optical fibers [PDF]
arXiv, 2005 This article recounts definition, classification, history, and applications of microstructured optical fibers.
arxiv
Simulation of Optical Fiber Amplifier Gain Using Equivalent Short Fibers [PDF]
, 2019 Electromagnetic wave propagation in optical fiber amplifiers obeys Maxwell equations. Using coupled mode theory, the full Maxwell system within an optical fiber amplifier is reduced to a simpler model. The simpler model is made more efficient through a new scale model, referred to as an equivalent short fiber, which captures some of the essential ...
arxiv +1 more source
Light: Science & ApplicationsWe report the development of a head-mounted photoacoustic fiberscope for cerebral imaging in a freely behaving mouse. The 4.5-gram imaging probe has a 9-µm lateral resolution and 0.2-Hz frame rate over a 1.2-mm wide area.
Xiaoxuan Zhong +6 more
doaj +1 more source
Low-frequency vibration measurement by a dual-frequency DBR fiber laser
Photonic Sensors, 2017 A dual-frequency distributed Bragg reflector (DBR) fiber laser based sensor is demonstrated for low-frequency vibration measurement through the Doppler effect.
Bing Zhang +5 more
doaj +1 more source
Multimode optical fiber radiation modal decomposition [PDF]
arXiv, 2013 We proposed the method of the optical fiber modal decomposition of the radiation propagating in a multimode optical fiber with a step like refractive index profile. The field distribution at the output end of the fiber was used. The method is based on the field decomposition by non-orthogonal modes.
arxiv
Bio-Chemical Sensors Based on Excessively Tilted Fiber Grating
Photonic SensorsExcessively tilted fiber gratings (ExTFGs) are a type of special optical fiber grating device different from traditional fiber Bragg gratings, long period fiber gratings, and tilted fiber Bragg gratings.
Fudan Chen +3 more
doaj +1 more source