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Proceedings Paper

Behavior of polymer cladding materials under extremely high temperatures
Author(s): Timothy E. Clark; Selee Chang; SeungJo Kwak; Jung Hyun Oh
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Paper Abstract

Polymer claddings with low refractive indices for silica core fibers were developed. Applications include fiber lasers and transmission of high power lasers in surgery. For many applications, operating fibers under high temperatures is desirable. In a previous publication, the results of testing polymer cladded silica core fiber at 150°C for 6400 hours were given, along with 5000 hours of testing polymer films. The results at 150°C were encouraging, with little additional loss measured. Here we test polymers under more severe conditions, at 270°C, for periods up to 10 hours. The polymers' cured indices range from 1.374 to 1.397 (at 852 nm). Changes in Young's modulus, refractive index, yellowing, weight, hardness, strength, and elongation were observed. While these polymers cannot function at 270°C for extended periods, it is possible to expose them for shorter durations without significant damage. Some polymer properties actually improved after 4 hours of heating. Fibers clad with such polymers have been successfully jacketed with extruded materials, and have endured high temperatures for a few minutes. It is possible that a sensor, fiber laser or other fiber device could function in these temperatures for short periods without the coating properties changing beyond values required for operation.

Paper Details

Date Published: 30 January 2012
PDF: 6 pages
Proc. SPIE 8218, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XII, 82180U (30 January 2012); doi: 10.1117/12.909306
Show Author Affiliations
Timothy E. Clark, SSCP USA (United States)
Selee Chang, SSCP Co., Ltd. (Korea, Republic of)
SeungJo Kwak, SSCP Co., Ltd. (Korea, Republic of)
Jung Hyun Oh, SSCP Co., Ltd. (Korea, Republic of)

Published in SPIE Proceedings Vol. 8218:
Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XII
Israel Gannot, Editor(s)

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