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Proceedings Paper

Opportunity Of Ion Assisted Deposition In Production Of High Performance Optical Coatings For Demultiplexing In Spatial Telecommunications
Author(s): C. Grezes-Besset; G. Albrand; C. Amra; F. Flory; E. Pelletier
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Paper Abstract

To meet specifications that are required for demultiplexing in optical telecommunication, we are interested in complex multilayer systems with narrow pass band and high rejection. For spatial application, these filters must have very good optical and mechanical properties and we are led to use hard materials such as oxides. However, these materials deposited with classical vacuum evaporation-condensation techniques have a refractive index highly sensitive to atmospheric conditions. Optical properties of these systems are then very different in vacuum and in air. We show here that a solution consists in using new deposition techniques such as Ion Assisted Deposition. Some examples of multilayers produced with this deposition technique are given and optical performances that we reach are pratically independant of thermodynamical surrounding conditions.

Paper Details

Date Published: 6 October 1989
PDF: 9 pages
Proc. SPIE 1131, Optical Space Communication, (6 October 1989); doi: 10.1117/12.961533
Show Author Affiliations
C. Grezes-Besset, Universitaire de St Jerome (France)
G. Albrand, Universitaire de St Jerome (France)
C. Amra, Universitaire de St Jerome (France)
F. Flory, Universitaire de St Jerome (France)
E. Pelletier, Universitaire de St Jerome (France)


Published in SPIE Proceedings Vol. 1131:
Optical Space Communication

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