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Proceedings Paper • Open Access

Radhard optical patchcords and packaging for satellites using liquid crystal polymers
Author(s): S. O'Riorden; A. Mahapatra

Paper Abstract

There are many advantages to employing fiber optics for high capacity satellite communication. However, optical cables can be susceptible to high radiation, temperature extremes and vacuum environment. Any hardware used in these systems must be rugged, durable and immune to the detrimental effects of the aforementioned conditions.

Standard COTS optical fiber will darken when exposed to high levels of radiation limiting the effectiveness of the communications system. Of particular concern to satellites in GEO are energetic electrons, bursts of heavy particles due to solar storms which can cause total dose and single event effects (SEE). Conventional fiber optic cables have several issues performing in high radiation environments. Linden has patented and developed a novel cable using an extruded layer of Liquid Crystal Polymer (LCP) applied to commercially available fiber. Total dose effects are minimized by shielding with Liquid Crystal Polymer jacketing. It is a simple, inexpensive way to increase the radiation shielding and mechanical performance of cables in satellites while concomitantly providing hermeticity and thus increased fatigue factor for optical glass.

• LCPs exposed to 5000 Mrad dose of gamma rays retain in excess of 90% of their mechanical properties.

• LCPs exposed to 1 Mrad radiation dose with energetic protons retain almost 100% of their mechanical strength. Tensile modulus increases with exposure to the radiation.

• Weight for weight the proton absorbing power of LCP is 25% better than that of aluminum.

We will present experimental data on radhard optical patchcords.

Paper Details

Date Published: 20 November 2017
PDF: 11 pages
Proc. SPIE 10564, International Conference on Space Optics — ICSO 2012, 105641I (20 November 2017); doi: 10.1117/12.2309239
Show Author Affiliations
S. O'Riorden, Linden Photonics, Inc. (United States)
A. Mahapatra, Linden Photonics, Inc. (United States)

Published in SPIE Proceedings Vol. 10564:
International Conference on Space Optics — ICSO 2012
Bruno Cugny; Errico Armandillo; Nikos Karafolas, Editor(s)

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