Numerical simulations on spatial filtering efficiency with optical fibers and integrated optics components

2003 ◽  
Author(s):  
Phillipe Leproux ◽  
Valerie Weber ◽  
Isabelle Schanen-Duport ◽  
Pierre Haguenauer ◽  
Valerie Doya ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Integrated Optics ◽  
Optical Fibers ◽  
Spatial Filtering ◽  
Filtering Efficiency

DYNAMICS OF SUPER-SECH SOLITONS IN OPTICAL FIBERS

2010 ◽  
Vol 19 (02) ◽  
pp. 339-370 ◽  
Author(s):  
PATRICE GREEN ◽  
DANIELA MILOVIC ◽  
AMARENDRA K. SARMA ◽  
DAWN A. LOTT ◽  
ANJAN BISWAS
Keyword(s):  
Variational Principle ◽  
Numerical Simulations ◽  
Optical Fibers ◽  
Optical Solitons

This paper obtains the parameter dynamics of super-sech optical solitons propagating through optical fibers. The variational principle is applied to obtain these parameter dynamics. Both polarization preserving fibers as well as birefringent fibers are studied in this paper. The study is then finally extended to the case of DWDM systems. The adiabatic parameter dynamics of soliton parameters is then obtained in the presence of perturbation terms. The numerical simulations are also obtained to complete the analysis.

scholarly journals Integrated Optics in Astronomical Interferometry

1994 ◽  
Vol 158 ◽  
pp. 261-271 ◽  
Author(s):  
V. Coudé du Foresto
Keyword(s):  
Integrated Optics ◽  
Single Mode ◽  
Spatial Filtering ◽  
Coherent Beam ◽  
Optical Components ◽  
Polarization Behavior ◽  
Integrated Optical ◽  
Fringe Tracking ◽  
And Control

Integrated optical components (mostly single-mode fibers and couplers) can be used to achieve several functions that are needed in interferometry: coherent beam transportation and recombination, pathlength modulation and control for fringe tracking and double Fourier interferometry, spatial filtering of the wavefront and interferogram calibration. Their potential is assessed and the main problems encountered in their implementation are discussed: dispersion, polarization behavior, and especially starlight injection.

A Dual-Scale LES Subgrid Model for Turbulent Liquid/Gas Phase Interface Dynamics

2015 ◽  
Author(s):  
Marcus Herrmann
Keyword(s):  
Surface Tension ◽  
Numerical Simulations ◽  
Gas Phase ◽  
Isotropic Turbulence ◽  
Phase Interface ◽  
Spatial Filtering ◽  
Direct Numerical Simulations ◽  
Scale Model ◽  
Interface Dynamics ◽  
Dual Scale

Turbulent liquid/gas phase interface dynamics are at the core of many applications. For example, in atomizing flows, the properties of the resulting liquid spray are determined by the interplay of fluid and surface tension forces. The resulting dynamics typically span 4–6 orders of magnitude in length scales, making direct numerical simulations exceedingly expensive. This motivates the need for modeling approaches based on spatial filtering or ensemble averaging. In this paper, a dual-scale modeling approach is presented to describe turbulent two-phase interface dynamics in a large-eddy-simulation-type spatial filtering context. To close the unclosed terms related to the phase interface arising from filtering the Navier-Stokes equation, a resolved realization of the phase interface dynamics is explicitly filtered. This resolved realization is maintained on a high-resolution over-set mesh using a Refined Local Surface Grid approach [1] employing an un-split, geometric, bounded, and conservative Volume-of-Fluid method [2]. The required model for the resolved realization of the interface advection velocity includes the effects of sub-filter surface tension, dissipation, and turbulent eddies. Results of the dual-scale model are compared to recent direct numerical simulations of an interface in homogeneous isotropic turbulence [3].

Passive and active data porting to composite integrated optical fibers via integrated optics

2008 ◽  
Author(s):  
M. E. Teitelbaum ◽  
D. J. O'Brien ◽  
E. D. Wetzel ◽  
K. W. Goossen
Keyword(s):  
Integrated Optics ◽  
Optical Fibers ◽  
Integrated Optical ◽  
Active Data
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