Download Computer Controlled Experimental Setup for Selective Excitation of

Abstract
Mode group diversity multiplexing uses each mode group as an independent
transmission channel over a multimode fibre. The division in different group
modes is based on selective excitation of mode groups. Studies on this technique require very accurate spatial launching conditions, where a computer controlled motorized setup provides the necessary high repeatability indispensable
to achieve reliable experiment conditions and results. The aim of this project is
then to implement a computer controlled motorized setup that satisfies mainly
the desired accuracy, repeatability and resolution. To do so, a software application for a common computer is developed in Labview programming. It is
capable of controlling relative positions of several optical components according
to the optical setup specific details and requests by translation of movement
stages. This software will establish a computer-controller communication. The
computer transmits simple commands which the controller decodes and executes by controlling stages movements. This process is transparent for the user,
which only has to input some optical system parameters and desired launching
conditions. The software will automatically calculate the correspondent necessary movements and confirm that they are performed. The program can realize
other features as free and independent stages movements or position information. The software can be used in different setups as setup system parameters
are user-defined.