Max Power for Fiber Connectors?

In summary, it seems that connectors with different tip dimensions experience bigger burns because of the misalignment in the fiber cores.
  • #1
n0_3sc
243
1
Max Power for Fiber Connectors??

Does anyone know the maximum peak or average power for FC/APC fiber optic connectors?

My system is constantly burning the cores of these connectors.
I have a maximum of 600mW (average) and 1KW (peak) passing through these connectors.
 
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  • #2
I did a google search and found this article (cached):
http://209.85.207.104/search?q=cach...er&hl=en&ct=clnk&cd=1&gl=us&client=firefox-a"

A number of events can damage fiber optic connectors. Unprotected connector ends can experience damage by impact, airborne dust particles, or excess humidity or moisture. The increased optical output power of modern lasers also have the potential to damage a connector, an often overlooked factor in discussions about handling and caring for optical fibers and connectors. Most designers tend to think of the power levels in optical fibers as relatively insignificant. However, a few milliwatts at 850 nm will do permanent damage to a retina. Today, optical amplifiers can generate optical powers of 1 Watt of more into a single-mode fiber. This becomes quite significant when one considers that the optical power is confined in the optical core only a few microns in diameter. Power densities in a single-mode fiber carrying an optical power of 1 Watt (+30 dBm) can reach 3 megawatts/cm2 or 30 gigawatts/m2! To put it in everyday terms, sunlight at the surface of the Earth has a power density of about 1,000 Watts/m2. Most organic materials will combust when exposed to radiant energies of 100 kilowatts/m2. Clearly, power densities of 30 gigawatts/m2 deserve attention.
Effects on Fiber Optic Connectors

One should never clean an optical connector attached to a fiber that is carrying light. Optical power levels as low as +15 dBm, or 32 milliwatts, may cause an explosive ignition of the cleaning material when it contacts the end of the optical connector, destroying the connector. Typical cleaning materials, such as tissues saturated with alcohol, will combust almost instantaneously when exposed to optical power levels of +15 dBm or higher. The micro-explosions at the tip of the connector can leave pits in the end of the connector and crack the connector’s surface, destroying its ability to carry light with low loss. Figure 5 shows an optical connector that has been heavily damaged by high optical power levels. Usually the damage is limited to less severe pitting.
Hope this helps.
 
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  • #3
Thanks a lot - I don't know why I couldn't manage to find that page.

I have obeyed all those cleaning procedures, and I disbelieve that the high power I am using is burning these connectors. The reason is, the burnt pair of connectors are not directly from the amplifier. Their is another pair before it that DOES NOT burn.

Something weird is going on...
 
  • #4
ok problem solved...
Turns out NOT ALL FC/APC connectors have the same connector tip dimensions hence a slight misalignment in the fiber cores thus bigger loss = bigger burns.

Let this be a lesson to all.
 
  • #5
Thanks n0_3sc for letting us know the reason for you problem. So do you change the connectors type or is there a way to align?
 
  • #6
dlgoff said:
Thanks n0_3sc for letting us know the reason for you problem. So do you change the connectors type or is there a way to align?

Sorry I don't know if your being sarcastic but taking your question seriously:
There are only one type of fiber joiners. So I snipped of the one connector and spliced a new one on, with similar tip dimensions.

Yes you may align them through free space mechanisms but this is far too lossy.
 
  • #7
I wasn't trying to be sarcastic. Not being an expert in this area (had a little experience years ago), I didn't know if there were ways I wasn't aware of.

Glad you've solved the problem.
 

What is the maximum power for fiber connectors?

The maximum power for fiber connectors varies depending on the type of connector and the specific application. Generally, the maximum power ranges from 1 to 10 watts, with some specialized connectors allowing for higher power.

Why is it important to know the maximum power for fiber connectors?

Knowing the maximum power for fiber connectors is important because it ensures that the connectors are not overloaded with too much power, which can cause damage or failure. It also helps in selecting the appropriate connector for a specific application.

How is the maximum power for fiber connectors determined?

The maximum power for fiber connectors is determined through testing and measurement. This involves subjecting the connector to different levels of power and monitoring its performance and reliability. The results are then used to determine the maximum power that the connector can handle safely.

Can the maximum power for fiber connectors be increased?

In most cases, the maximum power for fiber connectors cannot be increased. It is determined by the design and materials used in the connector and cannot be altered without risking damage or failure. It is important to choose the right connector with the appropriate maximum power for your specific application.

What are the consequences of exceeding the maximum power for fiber connectors?

Exceeding the maximum power for fiber connectors can result in damage or failure of the connector, which can lead to network downtime and costly repairs or replacements. It can also cause signal loss and interference, impacting the performance of the fiber optic system. It is crucial to always stay within the limits of the maximum power for fiber connectors to ensure optimal performance and reliability.

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