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 Coupling laser-FO
- Space magnetic fields - plasma


Last updated on 30-Aug-2001.

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       Coupling laser-FO

Version française

Launching coupling efficiency calculation from optical system to single mode fiber

Technical documentation and User Manual.

Xavier Outhier

August 4, 1997

    Abstract and introduction

         The aim of this short report is to let a trace of the work done during 10 weeks at the Czech Technical University of Prague (Czech Republic) at the Faculty of Nuclear Physics in the department of Physical Electronics under the responsibility of Pr. Fiala. This report resumes the problem to solve and the implemented solution. The problem is to make a numerical code to compute the coupling efficiency of ligth that passed through an optical system to a single-mode fibre. We focus on the interface between the exit pupil plane of the optical system and the fiber. We suppose we know the field distribution of the source at the exit-pupil plane, the total aberration at the same plane and the relative position of the fiber with this plane. The solution is based upon the far field point of view [3] that permits to rely on with already existing ray-tracing programs for the computation of the incoming distribution of ligth. Moreover this permits to manage general aberration that is harder if the near-field point of view is used. The code itself is written in ANSI C/C++ and was tested on an Indy Sillicon Graphics under unix system.

    Theory and technical documentation:

           A complete documentation is available in
Postscript format: (325 KB)
PDF format: csmf1-manual.pdf (215 KB) (*)

           They are also availalbe in a zip format
zipped Postscript format: (70 KB)
zipped PDF format: (111 KB) (*)

Download the softwares to read these files on your platform. It's for free:

    Codes sources archives (**) :

Source archive in UNIX format in tar.gz .
Source archive in DOS format in zip .

    Authors and contact

The author is Xavier Outhier . Feel free to write me for any question.
The list might enlarge some persons are currently updating the code.

(*) The quality is not really good regarding text. Ghostview converter was used to convert from .ps to .pdf.
(**) Sources use librairy complex (that was on Sillicon Graphics I used). This is not ANSI C++ (C++ was not standadized at that time). It might be necessary to make some changed regarding that. If you adapt it to use the STL I will be pleased to add your version on this page.

http:/ / en/ projects/ realizations/ csmf_en.html