How does an electrostatic charge get onto a fiber optic ferrule and how does that create contamination issues?
The electrostatic charge that gets onto a ferrule is usually caused by contract friction also known as triboelectric charging. Triboelectric charging happens when the surface electronics of two different materials move from the surface when during contact. Many people have experienced triboelectric charging when they walk across a carpet during the cold, dry winter months and touch a metal door knob. The static charge was caused by the contact friction of your shoes and the carpet.
If one material surface loses some electronics in the contact process, it will become a positively charged surface. The second material that picked up the electronics will have a negative charge because of the extra electrons.
Contact friction happens all the time with fiber optic connectors. There is contact friction when a connector is inserted into an adapter. There is contact friction when the connector surface is being wiped during the cleaning process. Connector end faces near equipment cooling fans are vulnerable. The dust in the air makes contact with the friction of the fan blades. The dust becomes electrostatically charged and bonds with oppositely charged surfaces.
The most common contamination problem with fiber connectors are dust particulates. When a ferrule end face becomes electrostatically charged, it is going to attract oppositely charged dust particles so the surface can return to an electrically neutral state.
Answered by AskFOC Technical Team WITH the Sticklers MicroCare Corporation Team July 1, 2017
Have a technical question for Fiber Optic Center?
Please email your question to AskFOC@focenter.com and we will respond ASAP.
In addition to replying, we will post your question and our answer here on the AskFOC page. Everyone remains anonymous when we post so feel comfortable asking your questions. You can also search to see if your question has already been answered in the FAQs section below.
- From the Industry: End Supply Chain Friction By Changing This One Thing About Your Quality Control Process… - November 16, 2017
- From the Industry: Study by Lockheed, Cinch, and FiberQA to be Presented during AVFOP 2017 - November 1, 2017
- Fiber Optic Center AskFOC: Can you use expired epoxy? - November 1, 2017
- Fiber Optic Center AskFOC: Determining minor or normal slight binder indentation on buffer tubes - October 16, 2017
- Press Release: Fiber Optic Center, Inc. introduces Viavi FiberChek Sidewinder, first fully autonomous handheld inspection and analysis solution for multifiber connectors - October 10, 2017
- Press Release: Fiber Optic Center, Inc. announces the promotion of William Sorell to Shipping Supervisor - October 5, 2017
- Fiber Optic Center AskFOC: Where does dust based end face contamination come from? - August 16, 2017
- Fiber Optic Center AskFOC: What is the highest capacity fiber count an OCETS can handle? - August 9, 2017
- Fiber Optic Center AskFOC: Why is it important to clean both ends of the connector pair? - August 8, 2017
- Fiber Optic Center AskFOC: How residue based contamination cause signal loss between a mated connector pair? - August 2, 2017