For high-speed optical transfer and WDM, there is more and more energy of over 1W output power from laser LD. How is it going if there exits pollution and dust on the end face? ● Fiber may fuse because of pollution and dust heating. (In foreign countries,it is limited that the fiber connectors and adapters should suffer over 75 ℃). ● It can cause damage to the laser equipment and influence the communication system because of light reflex (OTDR is very sensitive).   Effect of Dust Heating by High-Energy Laser ● Burn the fiber stub ● Fuse the surrounding of fiber stub ● Melt the surrounding metal powder of fiber stub   Comparison

Tools	Reasons of Undesired Effects
Optic Fiber Stick and Electronic Optic Fiber  Cleaner	1)  Though it is good  at the first cleaning, there is secondary pollution after repeated use.  (Secondary pollution is avoided by our CLEP because the cleaning part will be  updated after use). 2)  High cost.
Non-Woven Fabrics (Clothes or Towel) and  Cotton Ball Rod	1)  It is not suitable  for the final cleaning because of the depilation.It may cause of failure. 2)  The Metal powder and dust will  cause damage to the fiber end face.
High Pressure Gas	1)  It is good for the  floating dust at a non-contact method. However there is little effect to the  backlog dust. 2)  There is little  effect to the oil.

● Optical Transceiver Module Port ● Tosra End Face ● Yin-Yang Optical Attenuator End Face ● Patch Panel Port ● Optical Transmitter And Receiver Port