532-2050nm PMVOA Polarization Maintaining Variable
Kernstech’s 532-2050nm PMVOA Polarization Maintaining Variable Optical Attenuator (PMVOA) is a high-precision optical device designed to manage optical power in fiber optic systems. This PMVOA operates across a broad wavelength range from 532 nm to 2050 nm, making it suitable for various applications in optical communications, fiber sensors, and research settings. With high accuracy, low insertion loss, and a wide attenuation range, this device ensures reliable and precise control of optical signal strength. Its polarization-maintaining design ensures optimal performance even in sensitive environments where polarization effects are critical.
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Product Description
| Parameter | Spec | Unit | |||||
| Center Wavelength | 20,502,000 | 15,501,310 | 1,064,980 | 850,780 | 633,532 | nm | |
| Operating Wavelength Range | ±40 | ±40 | ±20 | ±20 | ±20 | nm | |
| Attenuation Range | 08~60 | 06~60 | 06~60 | 06~60 | 08~60 | dB | |
| Max.Insertion Loss | 0.8 | 0.6 | 0.6 | 0.6 | 0.8 | dB | |
| Min.Extinction Ratio@23℃ | 18 | 20 | 20 | 20 | 18 | dB | |
| Min.Return Loss | 50 | dB | |||||
| Adjustment Accuracy | 0.02 | dB | |||||
| Max.power | 500 | mW | |||||
| Fiber Type | PM Panda Fiber | / | |||||
| Operating temperature | 0~+70 | ℃ | |||||
| Storage temperature | -40~+85 | ℃ | |||||
| Package Dimensions | 26×18×8 | mm | |||||
Product Description
The 532/2050nm PMVOA is a specialized variable optical attenuator designed for polarization-maintaining fiber systems operating at 532 nm (green) and 2050 nm (mid-infrared) wavelengths. It utilizes a magneto-optic or MEMS-based mechanism to achieve electrically controlled, continuous attenuation while preserving the input polarization state. The device features a compact form factor (≤30mm x 15mm) and low insertion loss, making it ideal for precision applications requiring both polarization integrity and dynamic power adjustment. The PMVOA is hermetically sealed to protect against dust and moisture, ensuring stable performance in challenging environments.
Features
Dual-Wavelength Support: Optimized for 532 nm (green laser) and 2050 nm (mid-IR), with optional support for 1550 nm.
High Polarization Stability: Maintains PER ≥25 dB and polarization-dependent loss (PDL) ≤0.3 dB across the attenuation range.
Precision Attenuation: Offers 0–30 dB attenuation with 0.1 dB resolution and low noise (≤0.05 dB ripple).
Fast Response Time: ≤10 ms for full-scale attenuation adjustment, suitable for real-time feedback systems.
High Power Handling: Supports up to 200 mW (532 nm) and 500 mW (2050 nm) optical power without damage.
Applications
Medical Lasers: Adjusts power in 532 nm photodynamic therapy (PDT) and 2050 nm surgical lasers while maintaining beam quality.
Spectroscopy: Controls light intensity in mid-IR spectrometers for gas sensing and material analysis.
Quantum Optics: Fine-tunes photon flux in polarization-entangled quantum state generation.
Fiber Sensors: Stabilizes signal levels in interferometric sensors operating at non-telecom wavelengths.
Research Labs: Used in laser alignment, optical testing, and wavelength-specific power calibration.
Faq
Q: Why is polarization maintenance important at 532 nm and 2050 nm?
A: Many applications at these wavelengths, like nonlinear optics or imaging, require consistent polarization for optimal performance.
Q: Can the attenuation be adjusted manually?
A: No, it requires a DC voltage input (0–5 V) for electronic control; manual adjustment is not supported.
Q: What is the operating temperature for 2050 nm operation?
A: -10°C to 60°C, with thermal drift ≤0.1 dB/°C.
Q: Does it introduce phase noise to the signal?
A: No, the passive attenuation mechanism ensures minimal phase distortion.
Q: Are custom wavelengths available?
A: Yes, we can design PMVOAs for other wavelengths (e.g., 1064 nm, 1940 nm) upon request.
