Attenuators adjust optical input strength and are frequently used to level the strength of optical signals
coming from multiple sources or adjust the strength of output from an erbium-doped fiber amplifier(EDFA).
They are available in fixed and variable models. SC,FC,LC type etc.

Characteristics:

High power endurance
Low back reflection
 Low wavelength dependent loss

Applications:

Optical fiber communications
 LAN, CATV Systems
Optical network equipments
 Optical test equipments

Parameters Fixed Type Attenuators       (Connector / Adapter Type) Variable Type Attenuators
Operation wavelength (nm) 13,101,550 1200-1600
Attenuation Value (dB) 0.5dB (10dB) 1~30dB
 1.0dB (10dB) 
Max. Optical Input Power (mW) 500 500
Max. PDL (dB) ≤0.1 ≤0.1
Return Loss (dB) PC ≥45 
 UPC ≥55 
 APC ≥60 
Operating Temperature  -30~+75 -30~+75
Storage Temperature  -40~+85 -40~+85