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Proceedings Paper

One application of the coherent light communication system: measurement distance with ultrasonic sensor
Author(s): J. Paredes Jaramillo; J. Castillo Mixcóatl; G. Beltrán Pérez; S. Aguirre Muñoz; J. A. Palma Vargas
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Paper Abstract

The coherent light communication systems have several advantages compared to the intensity-modulation direct-detection systems (IM-DD). The most important advantages are that offer increases transmission capacity and in principle they will limit only by the shot noise. However, there are important conditions for these systems, are that the beams must be mutually coherent, with the same polarization and, mechanisms to compensate the slow shift phase. Therefore the construction of these systems is generally most expensive that IM-DD systems. Nevertheless the use of adaptive photodetectors allows an easy implementation of this type of systems. In this work the results of a system that evaluates distances by means of an ultrasonic sensor and a coherent light communication system to send the information, with an adaptive detector based on the photo-EMF effect, are shown.

Paper Details

Date Published: 16 May 2007
PDF: 7 pages
Proc. SPIE 6422, Sixth Symposium Optics in Industry, 642205 (16 May 2007); doi: 10.1117/12.742304
Show Author Affiliations
J. Paredes Jaramillo, Benemérita Univ. Autónoma de Puebla (Mexico)
J. Castillo Mixcóatl, Benemérita Univ. Autónoma de Puebla (Mexico)
G. Beltrán Pérez, Benemérita Univ. Autónoma de Puebla (Mexico)
S. Aguirre Muñoz, Benemérita Univ. Autónoma de Puebla (Mexico)
J. A. Palma Vargas, Benemérita Univ. Autónoma de Puebla (Mexico)

Published in SPIE Proceedings Vol. 6422:
Sixth Symposium Optics in Industry

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