Describe the two different shapes and polishes currently used on SMF ferrules to reduce back reflection.
What will be an ideal response?
ANSWER: Shapes and polishes currently used on SMF ferrules to reduce back reflection include:
* UPC (Ultra Polished Connector)-Extensive polishing of the tips creates a rounded surface on a UPC (Ultra Polished Connector), which allows the two internal fibers to meet and increases efficiency over older types of connections.
* APC (Angle Polished Connector)-The latest advancement in ferrule technology uses the principles of reflection to its advantage. The APC (Angle Polished Connector) still uses a polished curved surface, but the end faces are placed at an angle to each other. The industry standard for this angle is 8 degrees.
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