Refractive-index profiling of single-mode graded-index optical planar waveguides by the inverse Wentzel-Kramers-Brillouin method with improved accuracy

2005 ◽  
Vol 44 (5) ◽  
pp. 054601 ◽  
Author(s):  
Kin Seng Chiang
Keyword(s):  
Refractive Index ◽  
Single Mode ◽  
Planar Waveguides ◽  
Graded Index ◽  
Optical Planar Waveguides ◽  
Improved Accuracy

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.

Waveguides Fabricated in LiNbO3 by Proton Implantation

1991 ◽  
Vol 244 ◽  
Author(s):  
P. Moretti ◽  
P. Thevenard ◽  
K. Wirl ◽  
P. Hertel
Keyword(s):  
Refractive Index ◽  
Refractive Index Profile ◽  
Planar Waveguides ◽  
Optical Barrier ◽  
Dark Line ◽  
Wide Range ◽  
Ion Energies ◽  
Optical Planar Waveguides ◽  
Proton Implantation ◽  
Mode Spectroscopy

ABSTRACTOptical planar waveguides, with a controllable thickness in a very wide range, typically from 3 to 20 μm, can be fabricated by thermally controlled proton implantation in LiNbO3. In the nuclear stopping region at the end of the ion's tracks a sufficient decrease in refractive index is obtained, thus forming an adequate optical barrier. The mode confinement was investigated by dark line mode spectroscopy, and the refractive index profiles were reconstructed. The effects of different ion fluences and ion energies in the Mev range on the refractive index profile at 300 K have been investigated.

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
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