In extreme mechanical, thermal and other environmental conditions the survival of synthetic fused silica optical fiber depends on the packaging, handling and additional protective coatings used, not so much on the glass itself. In addition to buffer coatings optical fiber is often cabled in assemblies or given a second buffer coating or over-jacket. These materials and the cable package design are key to the survival of the fibers in their final application. It is best to team with someone experienced in designing optical fiber assemblies or cables to assure a reliable end product. Polymicro has years of experience in this type of custom and production assembly design work and is ready to assist you with your design.

Buffered synthetic fused silica optical fiber can easily survive –55ºC to 125º+C required by many specifications. Depending on the buffer coating, temperatures up to 400º+C are survivable as well as below –55ºC. Polymicro’s polyimide buffered fibers have been used in liquid nitrogen environments, as well as at 300ºC continuous operation with intermittent use up to 400ºC, and with aluminum buffered fibers up to about 500ºC.

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