Modal field transforming fiber between dissimilar waveguides

1986 ◽  
Vol 60 (12) ◽  
pp. 4293-4296 ◽  
Author(s):  
Kimio Shigihara ◽  
Kazuo Shiraishi ◽  
Shojiro Kawakami
Keyword(s):  
Modal Field ◽  
Field Transforming

Modal field transforming quartz single-mode fibre

1988 ◽  
Vol 24 (8) ◽  
pp. 500 ◽  
Author(s):  
S. Tammela ◽  
P. Kiiveri ◽  
P. Pöyhönen
Keyword(s):  
Single Mode ◽  
Single Mode Fibre ◽  
Modal Field ◽  
Field Transforming ◽  
Mode Fibre

A Circular Plane-Mirror Laser Interferometer Containing an Angular-Limiting Device

1973 ◽  
Vol 51 (19) ◽  
pp. 2114-2117
Author(s):  
K. O. Hill ◽  
C. K. Campbell
Keyword(s):  
Integral Equation ◽  
Steady State ◽  
Laser Interferometer ◽  
Plane Mirror ◽  
Field Distributions ◽  
Modal Field ◽  
Circular Plane

The integral equation is derived for the steady-state modal-field distributions in a circular plane-mirror laser interferometer containing a symmetrically positioned angular-limiting device. It is shown that this equation reduces to the corresponding Fox and Li formulation in the limit when the aperture is fully opened.

A Novel and Simple Formalism for Study of Effect of Kerr Nonlinearity on Petermann I and II Spot Sizes of Single-Mode-Graded Index Fiber

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Jayanta Aich ◽  
Anup Kumar Maiti ◽  
Angshuman Majumdar ◽  
Sankar Gangopadhyay
Keyword(s):  
Power Series ◽  
Single Mode ◽  
Kerr Nonlinearity ◽  
Linear Optics ◽  
Graded Index ◽  
Non Linear Optics ◽  
Simple Formalism ◽  
Element Technique ◽  
Modal Field ◽  
Analytical Expressions

AbstractWe present investigation of Petermann I and II spot sizes in the presence of Kerr nonlinearity. Our study is based on the simple power series formulation for fundamental modal field of single-mode-graded index fiber developed by Chebyshev formalism. Based on the said power series expression in the absence of nonlinearity, analytical expressions of the said spot sizes can be prescribed. Using the analytical expressions of the said spot sizes in the absence of nonlinearity, we apply iterative technique in order to predict the said propagation characteristics in presence of Kerr nonlinearity. In this context, we choose some typical single-mode step and parabolic index fibers. We show that the our results agree excellently with the exact results which can be obtained by using rigorous finite-element technique. This leads to verification of accuracy of our simple technique. Moreover, evaluation of the concerned parameters by our formalism involves little computation. Thus, our method provides an accurate but simple alternative to the existing rigorous methods in this context. Accordingly, this novel and simple formalism will prove user friendly to the system engineers in the field non linear optics.

High Birefringence Photonic Crystal Fibers

2010 ◽  
Vol 663-665 ◽  
pp. 713-716
Author(s):  
Shu Qin Guo ◽  
Min Ge ◽  
Pan Zhuang ◽  
Li Ping Chang
Keyword(s):  
Photonic Crystal ◽  
Solid Core ◽  
Crystal Fiber ◽  
The Core ◽  
Crystal Fibers ◽  
Section Structure ◽  
General Section ◽  
Birefringence Effect ◽  
Modal Field ◽  
Air Hole

Photonic crystal fiber (PCFs) offer new possibilities of realizing highly birefringence fibers due to a higher intrinsic index contrast compared to conventional fibers. Here, based on general section structure of PCFs, we take some mend in the core configuration, and achieve highly birefringence effect. A elliptic air hole and its inscribed circular high refractive material form the core of PCFs together. Especially to mention, they are being tangent at two points. By optimally selecting parameters, the effective refractive index difference between two orthogonal directions neff can reach the magnitude of 10-2. After numerical calculation, we find that increase the size of circular solid core, or long axe size of elliptic air hole, birefringence parameter of modal field can become more highly. Moreover, by matching structure parameters appropriately, the modal field diameters can be equivalent in the two orthogonal directions. A Gaussian modal field with highly birefringence character can be acquired.

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