Prepare to Perform the Final Polish

SECTION F

Polishing Process for Single-mode Connector Return Loss >40dB

7.PREPARE TO PERFORM THE FINAL POLISH

Using an isopropyl alcohol dampened lint-free cloth, clean the ferrule and the polishing jig.

Clean a sheet of the final polishing film and place it shiny side down onto the clean polishing pad. Section the film into four (4) quarters. Mark the section 1, 2, 3 and 4. Place a few drops of water on section 1 of the film (Fig. F9).

8.PERFORM THE FINAL POLISH

Insert the ferrule into the jig and lower it gently onto the moistened polishing film.

Using the same medium pressure as in step 6, perform small circles in a spirograph pattern as shown in (Fig. F10). Perform 25 circular strokes. Wipe the ferrule dry with a lint-free cloth and inspect the ferrule end using the 100X microscope. The fiber should be completely smooth and free of any scratches (Fig. F11). If scratches are present in the fiber, perform an additional 3 to 5 strokes on an unused area of the film and inspect again. If necessary a final lapping of 3 to 5 strokes can be performed.

Note: The final polishing film can be used to polish up to 4 ferrule ends. Be sure to use a fresh area of the polishing film each time a new connector is to be polished.

Fig. F9

Fig. F10

Fig. F11

FC, PC3 specifications

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