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Untappable communication channels over optical fibers from quantum-optical noise
AlphaEta quantum-optical noise fiber optics
2016/1/25
Coherent light, as produced by lasers, gives rise to an intrinsic noise, known as
quantum noise, optical noise or shot noise. AlphaEta is a protocol which exploits this physical
phenomenon to obtain...
Resolution of Biological Microstructure Through In Situ Fluorescence Emission Spectra: An Oceanographic Application Using Optical Fibers
Situ Fluorescence Emission Spectra Biological Microstructure
2015/8/19
One of the challenges we face as oceanographers is the wide range of spatial and temporal scales over which we must measure the physical, biological, and chemical properties and processes in the ocean...
Designing Optical Fibers: Fitting the Derivatives of a Nonlinear Pde-Eigenvalue Problem
Symmetric Indefinite Eigenvalue Gradient Optical Fiber Design
2013/1/30
When trying to fit data to functions of the eigensystem of a pde-eigenvalue problem, such as Maxwell’s equation, numerical differentiation is ineffective and analytic gradients must be supplied. In ou...
IR Bismuth active centers in optical fibers: Combined excitation-emission spectroscopy
IR Bismuth active centers excitation-emission spectroscopy
2011/9/2
Впервые получены 3-мерные спектры люминесценции (интенсивность люминесценции в зависимости от длин волн возбуждения и эмиссии) легированных висмутом волоконных световодов различного состава в широком ...
Demonstrating Novel Functionality of Air-holes to Realize Large-mode-area Optical Fibers
Fiber characterization Fiber design fabrication Microstructured fibers
2015/5/25
A new functionality of air-holes, worked as prevention for micro-deformation induced loss without affecting other properties, is demonstrated. A fiber with Aeff of 150μm 2 was fabricated by utilizing ...
Bi:SiO 2 optical fibers – a possible way to understand the nature of Bi-related emitting centers
Fiber materials Fiber optics amplifiers oscillators Lasers fiber
2015/5/22
Excitation-emission properties of Bi:SiO 2 optical fibers (without other dopants) were investigated in the wavelength region 400-1600nm. Laser generation in fibers of such composition was demonstrated...
Strong fiber Bragg gratings in Bi-Al co-doped H 2 -loaded optical fibers using CW-Ar + laser
Fiber Bragg gratings photosensitivity Lasers fiber
2015/5/22
Bragg gratings with reflectivity >93% were fabricated in Bi-Al co-doped H 2 -loaded optical fibers. Average index changes as high as +2.5×10 -3 were obtained. Positive core stress changes indicate a c...
Nonlinearities in Silicon Optical Fibers
Fiber characterization Fiber materials Nonlinear optics fibers
2015/5/22
The nonlinear propagation characteristics in a hydrogenated amorphous silicon core optical fiber are investigated to demonstrate ultra-fast all-optical switching by cross-absorption modulation.
Cooperative Light Scattering Effects in Optical Fibers, Lasers, and Amplifiers
Nonlinear optics fibers Lasers fibers
2015/5/20
We overview Rayleigh, Brillouin and Raman scattering in optical fibers, fiber amplifiers and lasers focusing on their mutual cooperation dynamics and explaining associated effects such as multi-cascad...
The quantization of the light field is important for understanding some aspects of optical fiber systems: the quantum limit of amplifiers, the dynamics of solitons below shot noise and the appearance ...
Minimally Intrusive Identification of Traffic-Bearing Optical Fibers
Traffic-Bearing Optical Fibers Minimally Intrusive Identification
2015/5/18
An ongoing problem in any network finds craft personnel opening incorrect optical circuits for diagnosis. We demonstrate an instrument that non-intrusively induces a time-varying loss on optical fiber...
Ultra wide range tunable delay line using dynamic grating reflectors in optical fibers
fiber optics nonlinear optics fibers scattering stimulated Brillouin Bragg reflectors
2015/6/10
We experimentally demonstrate a novel technique to realize a tunable delay line based on dynamic Brillouin gratings in a high birefringence fiber. A 8ns pulse signal is continuously delayed up to 184n...
Nano-Engineered Optical Fibers and Applications
Fiber design fabrication Fiber characterization
2015/6/9
This paper reviews a technology for making nano-engineered optical fibers. Key features and advantages of nano-enginneered glass fibers are discussed. Fiber designs and their applications are presente...
The fundamental power scaling limits for diffraction limited fiber lasers are reviewed.Relationships between the limits show there is an upper bound for single aperture power of conventional fiber las...
Channel Capacity of Step-Index Polymer Optical Fibers: Experiments and Simulation with Realistic Parameters
Fiber optics communications Modulation
2015/6/4
Step-index Polymer Optical Fibers (SI-POF) are candidates for broadband in-house networks. For the first time, we give a comprehensive overview over the real channel capacity of POF links up to 100 m,...