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FOC Blog

Considering the Tg when selecting an epoxy

QUESTION:  Why do we need to consider the Tg when selecting an epoxy?    ANSWER:   One reason to consider the Tg is in selecting an epoxy that is appropriate for an application.  For an application requiring a flexible epoxy, a low Tg, something below 0°C is...

IL @ 1310 higher than 1550

IL @ 1310 higher than 1550 A connector, or an entire product design, showing a significantly higher Insertion Loss at 1310 than at 1550 indicates a likely problem in core-to-core alignment between the two mated ferrules.   The difference may be small, and indeed may...

The advantage of using coated flock pile pads

QUESTION:   What is the advantage of using coated flock pile pads?   ANSWER:  CMP flock pile pads have gone from being a good idea – but problematic – to becoming an advanced process that offers repeatable, predictable results. In the early days of MT process...

Epoxy past expiration

QUESTION: Our epoxy is past expiration – can it still be used?   ANSWER: Fiber Optic Center recommends that you test the material before using it in your production process. Cure it to see if it sets as expected. However, it’s difficult to determine if it has,...

How precise epoxy packaging weights are

QUESTION:  How precise are the epoxy packaging weights?   ANSWER: The fiber optic world is driven by precision. If you purchase a 4-gram package, you can rely on getting 4 grams of epoxy. This is a data point to consider as you determine which package size best...

Fiber stripping and damage tips

Fiber Stripping: Damage to the fiber during stripping may not always cause the fiber to break immediately.  It is very possible for a damaged fiber to remain unbroken during the production line processing.  Unless the weakened fiber breaks during production...

Implementing a cross-sectioning capability IN-HOUSE

When you implement a cross-sectioning capability IN-HOUSE, this enables you to conduct routine audits and rapid failure analysis. Implementing a cross-sectioning capability in-house, in your own testing environment We can help you set up the equipment, then train you...

IL @ 1310 and 1550 similar

IL @ 1310 and 1550 similar If made properly, the cable assembly will test about the same at either 1310 or 1550.  1550 Insertion Loss results are generally better by a few hundredths of a dB, due to, in part, its lower fiber attenuation.    It’s normal that Insertion...

Tricks to keep the polishing film from moving

QUESTION:  Is there a trick to keep the polishing film from moving?   ANSWER:   When fiber optic cable assembly houses set up a new polishing machine and establish their polishing process, they often find that film slipping or coming off the pad is an issue. To...

Premixed, frozen epoxy: best for the process

QUESTION:  Would premixed, frozen epoxy work better for my process?   ANSWER: Our customers who use premixed, frozen epoxy report two major benefits: (1) No need to worry about improper mixing due to operator error. Epoxy that is overmixed, undermixed, or has...

Fiber height variation

When polishing an MT ferrule, it is virtually impossible to polish an array of fibers to EXACTLY the same heights. There will always be some deviation in height between fibers in the array. But, when the fibers and ferrule are mated and under load, they undergo a...

AngstromLap polishing film and other brands

QUESTION: Does FOC have many customers using AngstromLap polishing film or are other brands more prevalent?   ANSWER: Hundreds of fiber optic cable assembly facilities around the world use Fiber Optic Center’s AngstromLap polishing film, including multiple...

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