Pulse Propagation And Dispersion In Arbitrary Optical Fibers

M. D. Feit; J. A. Fleck Jr.

doi:10.1117/12.957779

13 November 1980 Pulse Propagation And Dispersion In Arbitrary Optical Fibers

M. D. Feit, J. A. Fleck Jr.

Proceedings Volume 0190, Los Alamos Conference on Optics 1979; (1980) https://doi.org/10.1117/12.957779
Event: Los Alamos Conference on Optics '79, 1979, Los Alamos, United States

Abstract

We have developed a general treatment of light propagation and dispersion in arbitrary refractive index profile optical fibers. The method is based on the accurate numerical solution of the scalar wave equation by a combination of operator splitting and Fourier transform techniques. The Fourier representation of the propagating beam allows a dual description of the electric field in both (x,y) and transverse wavenumber space. This dual description affords a precise characterization of such propagation properties as spatial beam confinement, angular confinement (numerical aperture) and losses, all as a function of propagation distance z. In addition, Fourier transformation of the field autocorrelation function with respect to z yields the complete power spectrum containing trapped, "leaky," and radiation modes. The trapped modes appear as distinct spectral lines whose position (modal wavenumber) and amplitude (modal weight) are the ingredients needed to characterize the dispersion of the light pulse. The numerical tools developed allow a general characterization of realistic refractive index profiles including, e.g., losses and fiber bends as appropriate. The method has been applied to a fiber having a square law refractive index profile with a central dip. The cladding was surrounded with a strong absorber so that leaky modes would be rapidly attenuated. The central dip is found to profoundly alter the mode spectrum, principally by removing some of the degeneracy of the square law modes. In addition, the spread of modal group delays is increased by nearly two orders of magnitude, leading to much less favorable dispersive properties.

Citation Download Citation

M. D. Feit and J. A. Fleck Jr. "Pulse Propagation And Dispersion In Arbitrary Optical Fibers", Proc. SPIE 0190, Los Alamos Conference on Optics 1979, (13 November 1980); https://doi.org/10.1117/12.957779

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
1 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Beam propagation method

Refractive index

Optical fibers

Light wave propagation

Wave propagation

Cladding

Fourier transforms

Show All Keywords

Keywords/Phrases

Search In:

Publication Years