Variable Optical Attenuators
Compact variable optical attenuator in bench top or rack mount, available in 1 to 4 channels with single mode, PM or multimode fiber. Attenuation is set from the front panel or remotely, with optional optical power monitoring and control.
Technical overview
The series covers more than 60 dB of attenuation across 1260-1650 nm on single mode and PM fiber, or 700-1400 nm on multimode fiber, with plus/minus 0.1 dB accuracy in the 0-10 dB band and plus/minus 0.05 dB repeatability. Switching time is under 10 ms and the attenuator is rated for more than 10^7 cycles. Optional power monitoring spans +10 to -40, -55 or -65 dBm with plus/minus 0.2 dB setting accuracy. The quoted size and weight are for a bench top cabinet of up to 4 channels; higher channel counts and rack mount cabinets differ.
Features
- From 1 to 4 Channels
- Single mode, Multimode & PM Fiber
- Power Monitoring & Control
- Front Panel & Remote Control
- Available in Rack Mount and Bench Top cabinets
Specifications
| Parameter | Value |
|---|---|
| Attenuation Range (all fiber types) | > 60 dB |
| Fiber Interface - Single Mode | 9 µm |
| Fiber Interface - Polarization Maintaining | 9 PM µm |
| Fiber Interface - Multimode | 50 or 62.5 µm |
| Wavelength Range - Single Mode | 1260 to 1650 nm |
| Wavelength Range - Polarization Maintaining | 1260 to 1650 nm |
| Wavelength Range - Multimode | 700 to 1400 nm |
| Calibration Wavelengths - Single Mode | 1310, 1490, 1550, 1610 nm |
| Calibration Wavelengths - Polarization Maintaining | 1310, 1550 nm |
| Calibration Wavelengths - Multimode | 850, 1310 nm |
| Accuracy, 0 to 10 dB (at calibration wavelengths) | ±0.1 dB |
| Accuracy, 10 to 20 dB (at calibration wavelengths) | ±0.2 dB |
| Accuracy, 20 to 40 dB (at calibration wavelengths) | ±0.3 dB |
| Accuracy, 40 to 60 dB (at calibration wavelengths) | ±0.5 dB |
| Return Loss - Single Mode (with APC connectors) | > 55 dB |
| Return Loss - Polarization Maintaining (with APC connectors) | > 55 dB |
| Return Loss - Multimode (with APC connectors) | > 30 dB |
| Insertion Loss (all fiber types) | < 2.0 dB |
| Polarization Dependent Loss - Single Mode (at 0 dB attenuation) | < ±0.05 dB |
| Polarization Dependent Loss - Polarization Maintaining | N/A |
| Polarization Dependent Loss - Multimode (at 0 dB attenuation) | < ±0.05 dB |
| Polarization Extinction Ratio - Polarization Maintaining (without connectors) | > 18 dB |
| Repeatability - Single Mode | ±0.05 dB |
| Repeatability - Polarization Maintaining | ±0.2 dB |
| Repeatability - Multimode | ±0.05 dB |
| Maximum Input Power | 500 mW |
| Switching Time | < 10 ms |
| VOA Life | > 10^7 cycles |
| AC Power | 100 - 240 V AC, 50 - 60 Hz |
| Power Consumption | 15 VA |
| Control | Front panel and remote |
| Power Monitoring - Power Range | +10 to -40, +10 to -55, +10 to -65 dBm |
| Power Monitoring - Power Setting Time - Single Mode | ≤ 200 ms |
| Power Monitoring - Power Setting Time - Polarization Maintaining | ≤ 200 ms |
| Power Monitoring - Power Setting Time - Multimode | ≤ 500 ms |
| Power Monitoring - Power Setting Accuracy | ±0.2 dB |
| Dimensions (bench top, up to 4 channels) | 238 x 105 x 220 mm |
| Weight (bench top, up to 4 channels) | 2.6 kg |
| Operating Temperature | 0 to 60 °C |
| Storage Temperature | -20 to +70 °C |
| Humidity (non-condensing) | 95% at 0 °C to 40 °C |
Applications
- R&D optical testing
- Manufacturing test
- General purpose attenuation in single mode, PM and multimode links
Blocked on: Jake / manufacturer. This block is intentionally styled to be unmistakable — it is not draft copy, it is absent copy.
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