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E Cleaning Information Why is it important to clean optical devices ?

274 E6000C Mini-OTDR User’s Guide, E0302

Why is it important to clean

optical devices ?

In transmission links optical fiber cores are about 9 µm

(0.00035") in diameter. Dust and other particles, however,

can range from tenths to hundredths of microns in

diameter. Their comparative size means that they can

cover a part of the end of a fiber core, and as a result will

reduce the performance of your system.

Furthermore, the power density may burn dust into the

fiber and cause additional damage (for example, 0 dBm

optical power in a single mode fiber causes a power

density of approximately 16 million W/m

). If this

happens, measurements become inaccurate and non-

repeatable.

Cleaning is, therefore, an essential yet difficult task.

Unfortunately, when comparing most published cleaning

recommendations, you will discover that they contain

several inconsistencies. In this section, we want to

suggest ways to help you clean your various optical

devices, and thus significantly improve the accuracy and

repeatability of your lightwave measurements.

What do I need for proper

cleaning?

Some Standard Cleaning Equipment is necessary for

cleaning your instrument. For certain cleaning

procedures, you may also require certain Additional

Cleaning Equipment.

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Agilent Technologies 6002A Guia do Utilizador Página 274