Termination optical fiber is a coreless silica fiber. It is useful for eliminating back reflections from unused branches of a multi-port device as well as performing return loss measurement.

A termination of better than 65 dB is achieved by splicing approximately 0.25 meters of this fiber to the desired component. A fusion splice also provides higher reliability and long-term stability over conventional termination methods.

There is excellent repeatability since there is no potential for subsurface damage, fiber breakage, or fiber contamination as with polished or angled cleaves. A quality termination using a patented method (U.S. Patent No. 5,263,103) is possible for all fiber designs including high delta fibers such as erbium-doped fiber.
Unit of Measure

Coating/Buffer Descriptions

Coating Material


Operating Temperature Range

N/A -65 to +300 ºC

Dimensions/Geometric Properties

Glass Diameter (detail)

N/A 125 ± 2 µm

Core Non-Circularity

N/A < 2 %

Coating Diameter (detail)

N/A 155 ± 5 µm

Coating Concentricity

N/A ≥ 80%

Mechanical and Testing Data

Proof Test Level

N/A ≥ 100 kpsi

How To Order:


N/A OFS polyimide optical fibers are known to operate in environments up to 300 °C. Performance is application dependent. Contact our Technical Sales department to discuss your specific application requirements. 1-860-678-6636