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EU1401-4-2 Assembly Instructions    [Pre-assembled]

.9mm Buffered Fiber Pre-assembled Instructions (13 Steps)

Specifications:

Type:  FC, Field Installable, FC Compatible

Mode:  Multimode

Ferrule Material:  All Borosilicate glass ferrule

Curing Type:  Anaerobic, Epoxy, and UV Curable

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Step 1

Slide tapered end of .9mm boot onto .9mm buffered fiber.

 

Step 2

Measure and mark .800", on the .9mm buffer tube, from the end of the .9mm buffered fiber.  Strip the buffer tube from in front of the .9mm buffered fiber with No Nik strippers.

 

Step 3

This step is very important.  Clean stripped fiber with isopropyl alcohol soaked lint free cloth or a dry lint free cloth.  To clean fold cloth in half over fiber and gently squeeze on the fiber and pull it through the cloth.  This will clean the fiber of debris.  Carefully set aside stripped fiber.

[Diagram]

 

Step 4 - Gluing the Fiber (Anaerobic, Epoxy, and UV)

Anaerobic Instructions

  1. Take Loctite RC680 adhesive with flat end needle and insert into the knurled end of the silver locking piece of the pre-assembled connector. When it bottoms out, gently squeeze adhesive until a green dot forms in front of the ferrule. Then slowly withdraw adhesive (while maintaining pressure to allow some adhesive to coat the inside of the ferrule and ferrule shank.)

  2. Brush the stripped part of the fiber approx. .675” of the fiber from in front of the buffer (leaving 1/8”(.125”) from the front end of the stripped part of the fiber uncoated) and ¼” of the buffer with Loctite 7649 primer. Wait 15 seconds to allow primer to dry.

  3. Thread the fiber through the knurled end of the silver locking piece of the pre-assembled connector until it bottoms out.

  4. Proceed to Step 5.

Epoxy Instructions

  1. Mix Epo Tek 353ND epoxy (recommended).

  2. After mixing epoxy, fill a syringe with epoxy. Place needle tip over syringe and insert into knurled end of the silver locking piece of the pre-assembled connector. When needle tip bottoms out, inject epoxy until a yellow dot forms in front of the ferrule. Slowly withdraw syringe (while continuing to inject epoxy to allow some epoxy to coat the inside of the ferrule holder).

  3. Thread the fiber through the knurled end of the silver locking piece of the pre-assembled connector until it bottoms out.

  4. Place in fiber optic curing oven at 120° C or more for 3 minutes to accelerate and reduce chemical bond time. Remove from oven and allow to cool. (PVP curing oven recommended.)

  5. Proceed to Step 5

UV Instructions

  1. Apply about one drop of Norland 81 UV Optical Adhesive into the knurled end of the silver locking piece of the pre-assembled connector. Allow 6 seconds for the capillary action to draw the adhesive in the shank.

  2. Thread the fiber through the knurled end of the silver locking piece of the pre-assembled connector until it bottoms out.

  3. Place ferrule shank with threaded fiber in UV curing fixture. Place blue UV light over fiber and entire glass ferrule. Cure for 1 minute.

  4. Proceed to Step 5.

Step 5

After curing, slide up .9mm boot onto knurled end of the silver locking piece.

 

Step 6

Using cleaving tool, lightly score fiber at the point where the fiber comes out of the ferrule tip.  Then pull up on the fiber until it separates from the ferrule.

(Note: Do not snap off, pull directly off.)  (Caution: Cleaved fibers can be very sharp.)

 

Step 7

Place PVP rubber mat over PVP lapping plate and line with 15, 5, 1, and .3 micron lapping film.

 

Step 8

Add 3 drops of water to each lapping film.  Place connector into polishing puck.

 

Note for Steps 9 through 12: 

Be sure to blow off connector and puck after each lapping sequence to prevent contamination scratching of core. 

 

Step 9

Do 10 figure 8's using light even pressure, with 15 micron lapping film.

[Diagram]

 

Step 10

Do 14 more figure 8's using 5 micron lapping film.

[Diagram]

 

Step 11

Do 15 figure 8's using 1 micron lapping film.

[Diagram]

 

Step 12

Do 15 figure 8's using .3 micron lapping film.

[Diagram]

 

Step 13

Then insert ferrule straight up into 100x Inspection Microscope and inspect fiber core.  If connector is polished correctly, it should appear as it does in the picture or check against our

acceptable and unacceptable polishing outcomes diagrams.

[Picture]  [Acceptable]  [Unacceptable]

 

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       2008 Pine Valley Precision, Inc.
       Last modified: 02/27/08