Tight buffered fiber cables typically use which coating size?

Study for the BICSI OSP Design Test. Prepare using multiple choice questions, with hints and explanations to enhance understanding. Succeed in your exam journey!

Multiple Choice

Tight buffered fiber cables typically use which coating size?

Explanation:
Think about how the fiber is protected at the smallest scale. The glass itself is 125 µm in diameter, but it needs a protective coating. When fiber is tight-buffered, each individual fiber gets a single, uniform polymer coating around it, making handling and termination easier. That coating is typically 900 µm in diameter, so the fiber strand presented for terminations is about 900 µm wide. Larger numbers like 3.0 mm or 6.0 mm refer to the overall cable jacket or armor, not the coating around the glass. The bare 125 µm size is the glass itself, not a coating. So 900 µm is the standard coating size for tight-buffered cables.

Think about how the fiber is protected at the smallest scale. The glass itself is 125 µm in diameter, but it needs a protective coating. When fiber is tight-buffered, each individual fiber gets a single, uniform polymer coating around it, making handling and termination easier. That coating is typically 900 µm in diameter, so the fiber strand presented for terminations is about 900 µm wide. Larger numbers like 3.0 mm or 6.0 mm refer to the overall cable jacket or armor, not the coating around the glass. The bare 125 µm size is the glass itself, not a coating. So 900 µm is the standard coating size for tight-buffered cables.

More practice questions