AQ23332A Variable Optical Attenuator (2CH, High speed)
High-Speed, Dual-Channel Optical Attenuation with Output Monitoring and APC
The AQ23332A is a high-speed, two-channel variable optical attenuator module with integrated output monitoring for the AQ2300 Series Test Platform. Its dual-channel design increases measurement density and supports simultaneous attenuation control of multiple optical signals.
An Auto Power Control function automatically adjusts attenuation to maintain a constant optical output level. The module is suitable for optical transceiver evaluation, receiver testing, and automated measurements requiring controlled changes in optical power.
Key Specifications
- Insertion loss: 1.8 dB (typ.)
- Wavelength range: 1260 to 1640 nm
- Maximum attenuation: 40 dB
- Attenuation setting speed: 80 dB/s to 4 dB/s
- Applicable fiber: SMF
- Connector: FC/PC, FC/Angled PC
Optical transceiver measurements
The AQ2300 provides comprehensive optical transceiver evaluation by combining optical power measurement, optical attenuation, optical path switching, and ASE noise loading within a modular system. Multiple transceiver channels can be routed through optical switches, while variable optical attenuators enable controlled adjustment of optical signal levels. When combined with the AQ6151B Optical Wavelength Meter and the AQ6361/AQ6370E Optical Spectrum Analyzer, the system also delivers comprehensive wavelength and spectral analysis. The AQ23191A ASE Light Source can also be incorporated into the optical path to evaluate transceiver performance under controlled ASE noise-loading conditions.
[Measurement items] Optical power, wavelength, Spectrum, optical power adjustment, ASE noise loading
Optical Fiber Amplifier Measurements
The AQ2300 supports optical fiber amplifier evaluation under wavelength-division multiplexed (WDM) conditions. Multiple optical signals at different wavelengths can be independently controlled, attenuated, and multiplexed to create realistic inputs for the amplifier under test. Combined with the AQ6370E/AQ6361 Optical Spectrum Analyzer, the system can evaluate gain, gain flatness, noise figure, and ASE across multiple wavelength channels. The AQ6370E/AQ6361 provides dedicated optical amplifier analysis capabilities for gain and noise figure evaluation, while the AQ2300 enables flexible control of optical power levels and measurement paths for multi-wavelength testing.
[Measurement items] Gain, gain flatness, noise figure, ASE noise
Specifications
AQ23332A Variable Optical Attenuator (2 CH, with Monitor)
| Items | Specifications | |
|---|---|---|
| Model | AQ23332A | |
| Number of channels (Slot widths) | 2 channels (1 slot) | |
| Wavelength range | 1260 to 1640 nm | |
| Insertion loss | Typical | 1.8 dB (typ.)*2, *3, *4, *6, *9 |
| Maximum | 3.0 dB or less*2, *3, *5, *6, *9 | |
| Maximum attenuation | 40 dB*6 | |
| Attenuation accuracy | 0 to 10 dB | ±0.15 dB (typ.) or less*2, *3, *6, *8, *9, *10 |
| 10 to 20 dB | ±0.20 dB (typ.) or less*2, *3, *6, *8, *9, *10 | |
| 20 to 40 dB | ±0.45 dB (typ.) or less*2, *3, *6, *8, *9, *10 | |
| Attenuation repeatability | 0 to 20 dB | ±0.10 dB (typ.) or less*2, *3, *6, *8, *9, *10, *14 |
| 20 to 40 dB | ±0.15 dB (typ.) or less*2, *3, *6, *8, *9, *10, *14 | |
| Display resolution | 0.01 dB | |
| Output monitor accuracy | ±5% or less (setting range: −50 to +20 dBm)*2, *3, *4, *6, *9, *13 | |
| Optical return loss | 40 dB or less*2, *3, *6, *9 | |
| Polarization dependence | 0 to 10 dB | ±0.3 dBp-p or less*2, *3, *6 |
| 10 to 20 dB | ±0.4 dBp-p or less*2, *3, *6 | |
| 20 to 30 dB | ±0.6 dBp-p (typ.)*2, *3, *6 | |
| Maximum input power | +23 dBm | |
| Shutter isolation | 70 dB or more [operating life: 10 million cycles (typ.)] | |
| Attenuation setting speed | 80 dB/s to 4 dB/s | |
| Applicable optical fiber | SMF (ITU-T G.652.D) | |
| Monitor port option | — | |
| Optical connector | FC/PC, FC/Angled PC | |
| Dimensions (excluding protrusions) | 106.5 (H) × 31 (W) × 321.5 (D) mm | |
| Weight | Approx. 0.8 kg | |
*All values in the specifications assume a warm-up period of one hour. The environmental conditions are subject to the specification of frame controller.
*Unless otherwise noted, all specifications include the connector.
*1: Wavelength: 1310±15 nm, 1550±15 nm
*2: Ambient temperature: 23±2°C (constant temperature)
*3: When using the Yokogawa reference master cord (SMF)
*4: Connectors not included
*5: Connectors are included
*6: Wavelength: 1550±15 nm
*7: 0.15 dB or less if the wavelength is 1310±15 nm
*8: 2 σ
*9: Polarization dependence is not included.
*10: 1 minute after setting the attenuation
*11: Any one wavelength within 1310±15 nm or 1550±15 nm
*12: When using PC connectors (return loss 48 dB or more)
*13: Output power: ‒10 dBm
*14: Under step operation (0, 10, 20, 30, 40 dB)
