Polarization correction to the propagation constant during weakly guiding optical fiber analysis based on Gaussian approximation

2006 ◽  
Author(s):  
Anton V. Bourdine
Keyword(s):  
Optical Fiber ◽  
Gaussian Approximation ◽  
Propagation Constant ◽  
Fiber Analysis ◽  
Polarization Correction

An in-line optical fiber analysis system for well crude oil

2005 ◽  
Author(s):  
Haifeng Xuan ◽  
Yanbiao Liao ◽  
Ming Zhang ◽  
Shurong Lai ◽  
Shuming Liu
Keyword(s):  
Optical Fiber ◽  
Crude Oil ◽  
Fiber Analysis ◽  
Analysis System

scholarly journals Improved time-resolved acousto-optic technique for optical fiber analysis of axial non-uniformities by using edge interrogation

2015 ◽  
Vol 23 (6) ◽  
pp. 7345 ◽  
Author(s):  
E. P. Alcusa-Sáez ◽  
A. Díez ◽  
M. González-Herráez ◽  
M. V. Andrés
Keyword(s):  
Optical Fiber ◽  
Time Resolved ◽  
Fiber Analysis

Performance analysis of an in-line optical fiber analysis system for well crude oil

2007 ◽  
Author(s):  
Dehuan Meng ◽  
Haifeng Xuan ◽  
Min Zhang ◽  
Shurong Lai ◽  
Yanbiao Liao
Keyword(s):  
Performance Analysis ◽  
Optical Fiber ◽  
Crude Oil ◽  
Fiber Analysis ◽  
Analysis System

Marcuse’s power loss model tested for optical fiber coils of small radius.

2012 ◽  
Vol 1484 ◽  
Author(s):  
Karina R. Carmona ◽  
Alberto H. Armendáriz ◽  
José D. Moller ◽  
Alfredo M. Lucero
Keyword(s):  
Optical Fiber ◽  
Power Loss ◽  
Propagation Constant ◽  
Optical Path ◽  
Wave Guide ◽  
Small Radius ◽  
Mode Propagation ◽  
Optical Time Domain Reflectometer ◽  
Loss Parameter ◽  
Optical Time

ABSTRACTRecently, the usage of optical fiber coils has increased significantly, especially in the design of physic and chemical sensors. Therefore, it is important to test the theoretical current models developed to predict the power loss throughout optical fiber. In this paper a pioneer and popular model, the Marcuse model of power loss, was studied and evaluated for optical fiber coils of small radii. Power attenuation in a bent fiber data was collected using an Optical Time Domain Reflectometer (OTDR), and it was compared to the theoretical predictions of the Marcuse model. It was observed that the model predicts correctly the attenuation behavior for usual curvature radii, however, it fails to predict accurately the attenuation behavior for small curvature radii, underestimating considerably the actual power loss. Also, it has been observed that at small radii the power loss parameter 2α and the mode propagation constant of the wave guide β stop being constants and become functions of the optical path, particularly of the number of loops in the coil. It is possible that new mechanisms of light leaking are present, due to the extreme distortion of the modes configuration into the fiber at small radii. Those mechanisms cannot be described by a model that considers a power loss parameter 2α, and more specifically the mode propagation constant of the wave guide (β) as constants. Then it is important to develop other models where the previous parameters can be considered as functions of the optical path.

scholarly journals Fast and Simple Method for Evaluation of Polarization Correction to Propagation Constant of Arbitrary Order Guided Modes in Optical Fibers with Arbitrary Refractive Index Profile

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Anton Bourdine
Keyword(s):  
Refractive Index ◽  
Optical Fibers ◽  
Arbitrary Order ◽  
Propagation Constant ◽  
Refractive Index Profile ◽  
Computational Error ◽  
Index Profile ◽  
Simple Method ◽  
Polarization Correction ◽  
Guided Modes

This work presents fast and simple method for evaluation of polarization correction to scalar propagation constant of arbitrary order guided modes propagating over weakly guiding optical fibers. Proposed solution is based on earlier on developed modified Gaussian approximation extended for analysis of weakly guiding optical fibers with arbitrary refractive index profile in the core region bounded by single solid outer cladding. Some results are presented that illustrate the decreasing of computational error during the estimation of propagation constant when polarization corrections are taken into account. Analytical expressions for the first and second derivatives of polarization correction are derived and presented.

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