The Keysight 81571A feature excellent wavelength flatness and can handle high input power levels
Features:
- Attenuation Range: 0dB to 60dB
- High Input Power Level: 2W
- Wavelength Flatness: < 0.05dB
- High Attenuation Accuracy < 0.1dB
- Repeatability < 10mdB
- Wide Wavelength Range: 1200nm to 1700nm (SM)
- Low Signal Distortion due to low PDL, PMD, CD
- Built-in Shutter for Power Meter Zeroing
- Built-in Calibration Capability
Benefits:
- The high optical performance enables testing of transmission systems and components with minimal impact on the input signal.
- Unique combination of optical performance parameters gives you the flexibility to use and reuse the modular attenuator in different setups and applications.
- The integrated shutter protects test equipment and simplifies referencing and power meter zeroing without changes in the setup.
- Enhanced internal calibration feature reduces uncertainties and speeds up calibration in multi wavelength applications.
Variable Optical Attenuator Modules (Single Mode Fibers)
| 81570A | 81571A | ||
| Connectivity | Straight connector, versitile interface | Angled connector | |
| Fiber type | 9/125 μm SMF28 | ||
| Wavelength range | 1200 nm to 1700 nm | ||
| Attenuation range | 0 dB to 60 dB | ||
| Resolution | 0.001 dB | ||
| Repeatability 1 | ± 0.01 dB | ||
| Accuracy (uncertainty) 1, 2, 3, 4 |
± 0.1 dB (at 1550 nm) Typ. ± 0.1 dB (1250 nm to 1650 nm) |
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| Settling time 5 | Typ. 100 ms | ||
| Transition speed | Typ. 0.1 to 12 dB/s | ||
| Attenuation flatness 1, 4, 6, 8 |
± 0.07 dB; typ. ± 0.05 dB (1520 nm < λ < 1620 nm) Typ. ± 0.10 dB (1450 nm < λ < 1640 nm) |
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| Spectral ripple 7 | Typ. ± 0.003 dB | ||
| Insertion loss 2, 4, 9, 10 |
Typ. 0.7 dB (excluding connectors) < 1.6 dB (typ. 1.0 dB) (including connectors) 11 |
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| Insertion loss flatness 1, 11 | Typ. ± 0.1 dB (1420 nm < λ <1615 nm) 4 | ||
| Polarization dependent loss 2, 11 | 0.08 dBpp; typ. 0.03 dBpp (at 1550 nm ± 15 nm) | ||
| Return loss 11 | Typ. 45 dB (at 1550 nm ± 15 nm) | Typ. 57 dB (at 1550 nm ± 15 nm | |
| Maximum input power 12 | +33 dBm | ||
| Shutter isolation | Typ. 100 dB | ||
| Dimensions (H x W x D) | 75 mm x 32 mm x 335 mm (2.8” x 1.3” x 13.2”) | ||
| Weight | 0.9 kg | ||
| Recommended recalibration period | 2 years | ||
| Operating temperature | 10 °C to 45 °C | ||
| Humidity | Non-condensing | ||
| Warm-up time | 30 minutes | ||
1. At constant operating conditions
2. Temperature within 23 °C ± 5 °C
3. Input power < +30 dBm
4. For unpolarized light
5. Step size < 1 dB, for full range: typ. 6 seconds
6. Relative to reference at 0 dB attenuation
7. Linewidth of source ≥ 100 MHz
8. λ disp set to 1550 nm; attenuation ≤ 20 dB;
for attenuation > 20 dB:
add typ. 0.01 dB (α [dB] – 20) for 1520 nm < λ < 1620 nm
add typ. 0.02 dB (α [dB] – 20) for 1450 nm < λ < 1640 nm
9. For λ = 1550 nm ± 15 nm
10. Add typ. 0.1 dB for λ = 1310 nm ± 15 nm
11. Measured with Keysight reference connectors
12. Keysight Technologies Deutschland GmbH assumes no responsibility for damages caused by scratched or poorly cleaned connectors.