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In-line Variable Optical Attenuator

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

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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.