In-line Variable Optical Attenuator

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Description

Optical attenuator is a passive device used to reduce the power level of an optical signal. It is generally used in single-mode long-haul applications to prevent optical overload at the receiver. Optical attenuator is widely used in CWDM&DWDM, CATV systems, data center networks, test equipment and other high power applications.

In-line VOA comprises a dual fiber collimator and a reflection component separated by a linear moveable ND filter. They are used to permit dynamic control of optical power levels in a fiber and can be applied to adjust power level of signal in the optical communication at the output of light sources, E/O converters and for the linear or dynamic range of power meter.

Collimator variable optical attenuator is an useful tool for the optical components and systems test.

 

Features:

  • Wide attenuation range 0dB to 60dB
  • High Stability &High Reliability
  • Low original loss&PDL
  • Compact size

Specification

Specification:

Parameter 1310nm 1550nm 1310/1550 Dual window 850nm/1310nm
Wavelength (nm) 1310 ± 40 1550 ± 40 1310 ± 40 & 1550 ± 40 850 ± 40 &1310 ± 40
Attenuation range (dB) 0.6 ~ 60 0.6 ~ 60 0.8 ~ 60 0.8 ~ 40
Original loss (dB) ≤0.6 ≤0.6 ≤0.8 ≤0.8
Adjustment Precision (dB) 0.02
Return loss (dB) ≥50 ≥25
Fiber Type SMF-28e 50/125 or 62.5/125
PDL (dB) ≤0.15
Operating& Storage temperature (℃) -40 ~ +85
Cable Length 1M-2M

 

Drawing:

 

Application:

Variable in-line optical attenuators comprises a dual fiber collimator and a reflection component separated by a linear moveable ND filter. They are used to permit dynamic control of optical power levels in a fiber and can be applied to adjust power level of signal in the optical communication at the output of light sources, E/O converters and for the linear or dynamic range of power meter.

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