The Keysight 81576A features excellent wavelength flatness and can handle high input power levels. Additionally, the 81576A features a power control to set the output power level of the attenuator
Features:
- Attenuation Range : 0dB to 60dB
- High Input Power Level: 2W
- Wavelength Flatness: < 0.05dB
- High Attenuation Accuracy < 0.1dB
- Repeatability < 10mdBBuilt-in Power Meter for Monitoring
- Low Signal Distortion due to low PDL, PMD, CD
- Wide Wavelength Range: 1200nm to 1700nm (SM)
- Built-in Shutter for Power Meter Zeroing
- Built-in Calibration Capability
Benefits:
- The optional integrated power meter allows you to set the transmitted power not the attenuation thus obtaining consistent test results.
- 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 with Power Control (Single Mode Fibers)
| 81576A | 81577A | ||||||
| Connectivity | Straight connector, versatile interface | Angled connector, versatile interface | |||||
| Fiber type | 9/125 μm SMF | ||||||
| Wavelength range | 1250 nm to 1650 nm | ||||||
| Attenuation range | 0 to 60 dB | ||||||
| Resolution | 0.001 dB | ||||||
| Attenuation setting | Power setting | Attenuation setting | Power setting | ||||
| Repeatability | ± 0.010 dB | ± 0.015 dB 2 | ± 0.010 dB | ± 0.015 dB 2 | |||
| Accuracy (uncertainty) 1, 3, 4, 5 | ± 0.1 dB | ± 0.1 dB | |||||
| Settling time 6 | Typ. 100 ms | Typ. 300 ms | Typ. 100 ms | Typ. 300 ms | |||
| Transition speed | Typ. 0.1 – 12 dB/s | ||||||
| Relative power meter uncertainty 7, 8 | ± 0.03 dB ± 200 pW | ||||||
| Attenuation flatness 1, 5, 9, 10 |
± 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 11 | Typ. ± 0.003 dB | ||||||
| Insertion loss 3, 5, 12, 13 |
Typ. 0.9 dB (excluding connectors) 1.8 dB; typ. 1.2 dB (including connectors) 14 |
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| Insertion loss flatness 1, 4 | Typ. ± 0.1 dB (1420 nm < λ < 1615 nm) 5 | ||||||
| Polarization dependent loss 3, 12, 14 | 0.10 dBpp; typ. 0.05 dBpp | ||||||
| Return loss 12, 14 | Typ. 45 dB | Typ. 57 dB | |||||
| Maximum input power 15 | + 33 dBm | ||||||
| Shutter isolation | Typ. 100 dB | ||||||
| Dimensions (H x W x D) | 75 mm x 64 mm x 335 mm (2.8” x 2.6” x 13.2”) | ||||||
| Weight | 1.3 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 temperature
2. Output power > –40 dBm, input power < +27 dBm. For input power > +27 dBm add typ. ± 0.01 dB
3. Temperature within 23 °C ± 5°
4. Input Power < +30 dBm; λ = 1550 nm ± 15 nm; typ. for 1250 nm < λ < 1650 nm
5. For unpolarized light
6. Step size < 1 dB; for full range: typ. 6 seconds
7. Wavelength and SOP constant; temperature constant and between 23 °C ± 5 °C; λ < 1630 nm; 1s averaging time
8. Output power > –45 dBm, input power ≤ 27 dBm, for input power > + 27 dBm add typ. ± 0.02 dB
9. Relative to reference at 0 dB attenuation
10. 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
11. Linewidth of source ≥ 100 MHz
12. For λ = 1550 nm ± 15 nm
13. Add typ. 0.1 dB for λ = 1310 nm ± 15 nm
14. Measured with Keysight reference connectors
15. Keysight Technologies Deutschland GmbH assumes no responsibility for damages caused by scratched or poorly cleaned connectors.