Corning Scientific Center

St.Petersburg, Russia

Corning Scientific Center

St.Petersburg, Russia
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Downie J.D.,Corning Inc. | Hurley J.,Corning Inc. | Roudas I.,Corning Inc. | Koreshkov K.,Corning Scientific Center | Mlejnek M.,Corning Inc.
2015 IEEE Photonics Conference, IPC 2015 | Year: 2015

We study four different measurement methods of multi-path interference (MPI) in quasi-single-mode (QSM) fibers and compare their consistency and accuracy. Three methods agree to within 1.7 dB in each case while one overestimates MPI. © 2015 IEEE.

Downie J.D.,Corning Inc. | Hurley J.E.,Corning Inc. | Kuksenkov D.V.,Corning Inc. | Lynn C.M.,Corning Inc. | And 2 more authors.
Optics Express | Year: 2011

We investigate transmission of 112 Gb/s PM-QPSK signals over 50 μm core diameter OM3 multimode fiber using the center launch approach. We demonstrate successful transmission of 16 DWDM channels over a distance of 635 km for a capacity-distance product of 1016 Tb/s-km. The limiting impairment appears due to mode coupling and multipath interference effects. © 2011 Optical Society of America.

Mlejnek M.,Corning Inc. | Mlejnek M.,Corning Scientific Center | Roudas I.,Corning Inc. | Roudas I.,Corning Scientific Center | And 6 more authors.
IEEE Photonics Journal | Year: 2015

We use the power coupled-mode theory to study the interplay between multipath interference (MPI) and differential mode attenuation (DMA) in quasi-single mode (QSM) fibers. The analytical expressions derived assuming two mode propagation in QSM fibers show that MPI scales differently as a function of the span length for low and high DMA. Furthermore, we derive analytical expressions for the performance improvement of long-haul coherent optical communication systems using QSM fibers, taking into account the impact of excess loss and MPI on system performance. From these expressions, we calculate the maximum allowable coupling coefficient for different values of the DMA. We show, for example, that a QSM fiber with an effective area of 250 μm2, a coupling coefficient κ ≥ 6 × 10-4 km-1, and DMA equal to 4 dB/km offers a 1-dB performance advantage over a reference pure silica core single-mode fiber for spans of 100 km. © 2009-2012 IEEE.

Schermerhorn A.,Corning Inc. | Khodosevich K.,Corning Scientific Center | Joshi A.,Corning Inc. | Boger T.,Corning Inc.
Filtration | Year: 2012

Particulate filters are a key after-treatment component employed in all modern diesel engines. Key perfor-mance criteria of particulate filters are pressure drop and filtration performance. Both are determined by geometric design parameters such as size, cell density and wall thickness, as well as intrinsic wall scale material properties. The latter are usually related to the properties of the pore space such as porosity, pore size and pore morphology. In this paper tools to simulate the motion and deposition of discrete diesel soot particles through and on a finite section of a porous filter wall are discussed. The tools and models developed are solved for the com-plex flow through the pore space, either using the commercial software (FLUENT) or an internally developed Lattice-Boltzmann solver. The flow is combined with an internally developed discrete particle dynamics tracking routine to advance the particle motions in time. In the model the flow field is continually updated, taking account of the accumulation of soot. The simulated effect of mean pore size and porosity are dis-cussed for examples of synthetic microstructures. A comparison with experimental data shows good agree-ment for clean permeability.

Makovejs S.,Corning Inc. | Behrens C.,Deutsche Telekom AG | Braun R.-P.,Deutsche Telekom AG | Ten S.,Corning Inc. | And 5 more authors.
Journal of Optical Communications and Networking | Year: 2015

We use the analytical Gaussian noise model to assess the achievable capacity over a fully transparent network with 18 nodes and 26 physical connections. By applying a network-centric approach, we show that the use of adaptive modulation in combination with ultralow loss fiber can provide an increase in the achievable capacity. The use of ultralow loss, large effective area fibers can allow for further capacity increase. © 2015 Optical Society of America.

Lobanov S.,Corning Scientific Center | Sterlingov P.,Corning Scientific Center | Kaliteevskiy N.,Corning Scientific Center | Ten S.,Corning Inc. | And 2 more authors.
Optics InfoBase Conference Papers | Year: 2010

We consider 50GHz-spaced WDM transmission of 100Gbit/s PM-QPSK over a 2836km link. Theoretical performance on a "lumped" dispersion map is within 1dBQ of the optimal performance achievable with no dispersion compensation. © 2010 Optical Society of America.

Chivilikhin M.S.,Corning Scientific Center | Kuandykov L.L.,Corning Scientific Center | Cerato-Noyerie C.,Corning Inc. | Woehl P.,Corning Inc. | Lavric E.D.,Corning Inc.
Chemical Engineering Transactions | Year: 2011

Corning® Advanced-Flow™ glass reactors are continuous flow reactors with hydraulic diameters in the millimetre range. These devices enable the switch of chemical reactions from batch mode to continuous processing through more efficient, more economical and safer processes. In addition, these reactors provide a platform for developing innovative chemistries that have never been considered industrially practical, either for hazard or yield reasons. Corning proprietary apparatuses are compact, adaptable and scalable, optimizing overall production cost and quality of high-value specialty, fine, and pharmaceutical chemicals. Corning Advanced-Flow ™ glass reactors are composed of multiple inter-connected devices having different designs, offering the advantages of process intensification. This paper presents the comparison between experimental and CFD modelling results for the residence-time distribution of a family of glass devices. As the simulated residence-time distribution curves compared very well with experimental data, CFD was used to predict the flow behaviour of new, much smaller devices that are more difficult to characterize experimentally. Copyright © 2011, AIDIC Servizi S.r.l.

PubMed | Corning Scientific Center, Corning European Technology Center and Saint Petersburg State University of Information Technologies, Mechanics and Optics
Type: Journal Article | Journal: Physical review. E | Year: 2016

Ultrasonic near-field levitation allows for contactless support and transportation of an object over vibrating surface. We developed an accurate model predicting pressure distribution in the gap between the surface and levitating object. The formulation covers a wide range of the air flow regimes: from viscous squeezed flow dominating in small gap to acoustic wave propagation in larger gap. The paper explains derivation of the governing equations from the basic fluid dynamics. The nonreflective boundary conditions were developed to properly define air flow at the outlet. Comparing to direct computational fluid dynamics modeling our approach allows achieving good accuracy while keeping the computation cost low. Using the model we studied the levitation force as a function of gap distance. It was shown that there are three distinguished flow regimes: purely viscous, viscoacoustic, and acoustic. The regimes are defined by the balance of viscous and inertial forces. In the viscous regime the pressure in the gap is close to uniform while in the intermediate viscoacoustic and the acoustic regimes the pressure profile is wavy. The model was validated by a dedicated levitation experiment and compared to similar published results.

Kaliteevskiy N.A.,Corning Scientific Center | Korolev A.E.,Corning Scientific Center | Koreshkov K.S.,Corning Scientific Center | Nazarov V.N.,Corning Scientific Center | Sterlingov P.M.,Corning Scientific Center
Optics and Spectroscopy (English translation of Optika i Spektroskopiya) | Year: 2013

A phenomenological two-mode coupling model in few mode fibers (FMF) is developed. It uses a mode coupling coefficient and the differential modal delay as the input parameters and the split-step approach. The model is consistent with the experimental results demonstrating distributed mode coupling effects in FMF and may be used for multipath interference estimation based on statistical analysis of fluctuations. © 2013 Pleiades Publishing, Ltd.

Chamrai D.,Corning Scientific Center
WIT Transactions on Ecology and the Environment | Year: 2011

The concept of process intensification has been around for at least a decade in chemical process engineering. Conventional "batch" synthesis, with mixing and reactions done in bulky meter-scale vessels, often generates by-products and suffers from energy and material waste. Also, safety could become a concern when high-energy processes or highly toxic reagents are involved. As one of its key aspects, process intensification considers development of new equipment allowing substantially smaller, cleaner, safer and more energy-efficient and scalable methods for industrial-scale production of pharmaceutical and specialty chemical products. These needs can be addressed through the continuous-flow technology of Corning's Advanced-Flow™ glass reactors, which consist of modules with millimeter-scale channels that allow optimization of thermal and interfacial mass transfer for reducing overall heat and mass transfer resistances. This paper will describe Corning® Advanced-Flow™ reactor technology and several application cases in which these reactors demonstrated their high potential for industrial deployment and process intensification due to their ability to increase the efficiency, scalability, and quality of chemical processing - all while reducing environmental impact, performance variability and cost. © 2012 WIT Press.

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