Exfo FVA-3100-BW91 Variable Attenuator
The Exfo FVA-3100-BW91 is a variable optical attenuator designed for precise control of optical signal power. It features a wide wavelength range and high attenuation resolution, making it suitable for various testing and measurement applications in optical communication systems.
- Model
- Exfo FVA-3100-BW91
- Calibration
- Available on request
- Price
- $2,250
- Status
- In stock
- RFQ ref
- FVA-3100-BW91
This unit
The Exfo FVA-3100-BW91 is a variable optical attenuator that delivers precise, repeatable control of optical signal power across wide wavelength ranges. It achieves attenuation up to 100 dB with 0.005 dB resolution and ultra-low insertion loss (typically 1.5 dB maximum), making it essential for EDFA characterization, component loss simulation, power meter linearity verification, and spectral tuning in optical communication systems.
Technical Specifications
Attenuation: ≥ 65 dB to ≥ 100 dB depending on model and wavelength
Attenuation Resolution: 0.005 dB
Insertion Loss: Typically 1.5 dB, maximum 1.8 dB
Linearity: ± 0.1 dB
Spectral Uniformity: ± 0.1 dB across WDM spectrum (BW option)
Return Loss: > 55 dB (UPC connectors, singlemode); > 50 dB (APC connectors, singlemode)
Maximum Input Power: 25 dBm
Wavelength Range: 700 to 1350 nm or 1200 to 1650 nm
Wavelength Resolution: 0.1 nm
Key Features
Supports 9/125 µm singlemode and 50/125 µm, 62.5/125 µm, 100/140 µm multimode fibers
Programmable sequences up to 100 attenuation steps with dwell times to 1000 hours per step
Three attenuation modes: Absolute, Relative, and X+B (reference-based)
Front-panel manual control with user-defined steps and on-display value editing
Optional monitor output (select models) for receiver-end power-level verification
Remote control via GPIB (IEEE-488.1, IEEE-488.2) or RS-232
LabVIEW drivers and OCX controls available
Typical Applications
EDFA characterization and optimization
Component and system loss simulation
Instrument calibration and verification
Power meter linearity measurement
Automated bit-error-rate (BER) testing
Compatibility & Integration Configurable for both singlemode and multimode fiber systems. Operates as a standalone instrument or mounts in 19-inch rack. Dimensions: 117 mm (H) × 222 mm (W) × 333 mm (D); weight 2.6 kg. Operating temperature 0 °C to 40 °C.
Specifications
| Parameter | Value |
|---|---|
| Power Range (dBm) | '+25 dBm maximum input power | Wavelength Range: 700 to 1350 nm or 1200 to 1650 nm |
Exfo FVA-3100-BW91 — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Exfo FVA-3100-BW91. Calibration covers attenuation accuracy at 5 or more set values across the full range (0 to rated maximum dB), attenuation linearity, wavelength-dependent attenuation at 1310 nm, 1490 nm, and 1550 nm, insertion loss at minimum attenuation (0 dB position), and polarization-dependent loss (PDL) where applicable. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Exfo FVA-3100-BW91 faults: motor and gear mechanism wear (attenuation steps or loss of smooth control), optical port contamination, EEPROM calibration data corruption. Most common faults are motor or gear mechanism wear on variable attenuators causing attenuation steps or loss of smooth control, optical port contamination reducing dynamic range, and EEPROM calibration data corruption on digitally controlled models.
Exfo FVA-3100-BW91 price
This Exfo FVA-3100-BW91 is listed at $2,250. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Exfo FVA-3100-BW91 calibration cost
NIST-traceable calibration for the Exfo FVA-3100-BW91 is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers attenuation accuracy at 5 or more set values across the full range (0 to rated maximum dB), attenuation linearity, wavelength-dependent attenuation at 1310 nm, 1490 nm, and 1550 nm, insertion loss at minimum attenuation (0 dB position), and polarization-dependent loss (PDL) where applicable. Turnaround is 1 to 3 business days after receipt. See full calibration details →
