The Keysight 81577A features excellent wavelength flatness and can handle high input power levels. Additionally, the 81577A features a power control to set the output power level of the attenuator
The Keysight 81577A variable optical attenuator features lowest insertion loss and excellent wavelength flatness over a complete attenuation range of 60 dB, for characterizing optical network components for telecomunication and data communication in systems. Keysight’s 81577A attenuator features power control functionality that allows you to set the output power level of the attenuator.
Key performance specifications, Features:
- Attenuation Range: 0dB - 60dB
- High Input Power Level: 2W
- Wavelength Flatness: < 0.05dB
- High Attenuation Accuracy < 0.1dB
- Repeatability < 10mdB
- Built-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.