Extension of inverse WKB method for refractive-index profiling of single-mode graded-index planar waveguides

2002 ◽  
Author(s):  
K.S. Chiang ◽  
C.L. Wong ◽  
S.Y. Cheng ◽  
H.P. Chan
Keyword(s):  
Refractive Index ◽  
Single Mode ◽  
Planar Waveguides ◽  
Wkb Method ◽  
Graded Index

A Simple Method for Prediction of Effective Core Area and Index of Refraction of Single-mode Graded Index Fiber in the Low V Region

2014 ◽  
Vol 35 (4) ◽  
Author(s):  
Angshuman Majumdar ◽  
Satabdi Das ◽  
Sankar Gangopadhyay
Keyword(s):  
Refractive Index ◽  
Single Mode ◽  
Index Of Refraction ◽  
Core Area ◽  
Exact Results ◽  
Simple Method ◽  
Graded Index ◽  
Core Areas ◽  
V Region ◽  
User Friendly

AbstractBased on the simple power series formulation of fundamental mode developed by Chebyshev formalism in the low V region, we prescribe analytical expression for effective core area of graded index fiber. Taking step and parabolic index fibers as examples, we estimate the effective core areas as well as effective refractive index for different normalized frequencies (V number) having low values. We also show that our estimations match excellently with the available exact results. The concerned predictions by our method require little computation. Thus, this simple but accurate formalism will be user friendly for the system engineers.

Refractive-index profiling of graded-index planar waveguides

2001 ◽  
Author(s):  
Kin Seng Chiang ◽  
Chi L. Wong ◽  
Hau P. Chan
Keyword(s):  
Refractive Index ◽  
Planar Waveguides ◽  
Graded Index

scholarly journals Influence of Temperature and Pressure on Dispersion Properties of Nonlinear Single Mode Optical Fibers

1970 ◽  
Vol 4 (2) ◽  
Author(s):  
Mostafa H. Ali, Ahmed E. Elsamahy, Maher A. Farhoud and Taymour A. Hamdalla
Keyword(s):  
Refractive Index ◽  
Optical Fibers ◽  
Propagation Constant ◽  
Error Function ◽  
Near Field ◽  
Single Mode ◽  
Computer Code ◽  
Graded Index ◽  
Runge Kutta Method ◽  
Delay Factor

Near field distribution, propagation constant and dispersion characteristics of nonlinear single-mode optical fibers have been investigated. Shooting-method technique is used and implemented into a computer code for both profiles of step-index and graded-index fibers. An error function is defined to estimate the discrepancy between the expected electric-field radial derivative at the core-cladding interface and that obtained by numerically integrating the wave equation through the use of Runge-Kutta method. All of the above calculations done under the ocean depth in which the depth will affect the refractive index that have a direct effect on all the optical fiber parameters.KeyWords: Nonlinear refractive index, Normalized propagation constant, Mode delay factor, Material dispersion, Waveguide dispersion.

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