Variable Optical Attenuation Solutions for Fiber Projects
What Is a Variable Optical Attenuator?
A variable optical attenuator (VOA) is an essential instrument for professional fiber optic networks, designed to precisely adjust optical power levels in technical and test environments.
Unlike fixed attenuators, this instrument allows technicians, telecommunications engineers and optical network specialists to simulate real transmission conditions, protect optical receivers or verify operating margins in active equipment.
How Does It Work?
A VOA adjustably reduces the transmitted optical power using mechanical (manual) or electronic (automated) mechanisms. It is commonly used by FTTH installers, test engineers, WDM network integrators and optical laboratories.
Available models:
- Manual (with mechanical adjustment knob)
- Digital / Electronic (control via display, USB, software or network)
Technical Benefits for Professionals
- Fine adjustment of optical levels in communication systems
- Simulation of distances and losses in optical links
- Ideal for testing with DWDM, CWDM, PON, GPON and FTTH equipment
- Compatible with single-mode and multimode fibers
- Recommended for verifying optical transceivers (SFP, QSFP, XFP)
- Protects sensitive equipment during installation or maintenance
- Portable and benchtop versions for field and laboratory use
Common Applications
- Optical test laboratories
- Installation and maintenance of fiber optic networks
- Optical link certification
- Simulation of network conditions in development environments
- Optical receiver tolerance validation in factories
- Testing in data centers and metropolitan area networks (MAN)
Variable Optical Attenuator Comparison – Professional Brands
|
Brand / Model |
Type |
Attenuation Range |
Accuracy |
Control |
Professional Applications |
|
EXFO FVA-600 |
Electronic |
0 – 60 dB |
±0.15 dB |
Display / USB |
FTTH and DWDM testing, SFP equipment |
|
Viavi OVA-5000 |
Electronic |
0 – 50 dB |
±0.2 dB |
Remote (USB) |
Advanced optical networks / remote control |
|
Thorlabs VOA50-FC |
Manual mechanical |
0 – 50 dB |
±0.1 dB |
Manual |
Optical laboratory, test benches |
|
Yokogawa AQ2200-311 |
Modular electronic |
0 – 60 dB |
±0.2 dB |
AQ2200 system |
Production and automation in optical laboratories |
|
JDSU HA9 |
Manual |
0 – 40 dB |
±0.3 dB |
Mechanical |
Field, installation and PON network testing |
Equipment Available for Sale
- Portable digital optical attenuators with real-time readout
- Electronic units with USB or network software control
- Laboratory attenuators with FC, SC and LC connectors
- Optical test kits with laser source and power meter
- Modules for automated test platforms
Why Choose Us?
- Wide catalog of equipment certified to ISO/IEC and ITU-T standards
- Specialized technical support for engineers and technicians
- Training on the use and calibration of optical attenuators
- Dedicated service for FTTH integrators and contractors
- Competitive pricing for industrial and telecommunications projects
Contact us for quotes and professional advice.
Nationwide shipping with warranty.
