MEMS VOA – Compact, High-Precision Variable Optical Attenuation for DWDM & ROADM Systems
In modern high-speed optical networks, precise control of optical power is essential. Whether you are managing channel equalization in a ROADM node, protecting a sensitive receiver, or fine-tuning EDFA gain tilt, a reliable Variable Optical Attenuator (VOA) is a critical component.
Feiyi Optoelectronic introduces its MEMS-based VOAhttps://www.feiyi-oeo.com/product/mems-voa/, combining low insertion loss, wide attenuation range, and fast response in an ultra-compact form factor.
What is a MEMS VOA?
Our MEMS VOA uses Micro-Electro-Mechanical System (MEMS) technology to attenuate optical signals with high accuracy and repeatability. Unlike thermal or magneto-optic VOAs, MEMS VOAs offer:
- Low power consumption (as low as 10mW)
- Fast switching speed
- Excellent wavelength and polarization stability
Key Features at a Glance
| Parameter | Value |
|---|---|
| Wavelength range | 1310nm & 1550nm (others available) |
| Attenuation range | 25dB / 40dB / 60dB (Bright or Dark) |
| Insertion loss (max) | 0.8dB |
| Return loss (min) | 45dB |
| Repeatability @20dB | ≤0.08dB |
| Stability @20dB (10s) | ≤0.1dB |
| Response time | ≤5ms |
| Total optical power | 500mW |
| Operating temperature | -5℃ ~ +70℃ |
| Storage temperature | -40℃ ~ +85℃ |
| Dimensions (L×D) | 22.5mm × Φ5.4mm |
| Power consumption | ≤10mW |
Bright vs. Dark Configuration
Our MEMS VOA is available in two configurations:
- Bright type: Attenuation decreases with applied voltage (normally attenuated)
- Dark type: Attenuation increases with applied voltage (normally transparent)
Both types are available in low voltage (6.5V) and high voltage (15V) drive versions.
Applications
The MEMS VOA is designed for multiple roles in fiber optic systems, including:
- Optical channel on/off switching
- Channel power equalization in DWDM / VMUX
- Receiver protection (preventing overload damage)
- Power equalization in OADM and ROADM nodes
- EDFA gain-tilt control
Customization Options
Feiyi understands that every network is different. We offer flexible customization:
- Wavelength: 1525–1570nm, 1570–1610nm, 1310nm, 1490nm, 850nm, or specify
- Fiber type: Bare fiber or 900μm loose tube
- Connector: FC/PC, FC/APC, SC/PC, SC/APC, or others
- Fiber length: 0.5m, 1m, 2m, or specify
- Attenuation range: 0~20dB, 0~25dB, 0~30dB, 0~40dB, 0~60dB
Why Choose Feiyi’s MEMS VOA?
- High reliability – wear-out cycle up to 10⁹ cycles
- Low PDL (Polarization Dependent Loss) – consistent performance across varying input polarization states
- No active cooling required – operates from -5℃ to 70℃
- Small footprint – ideal for high-density circuit packs and optical modules
- Telcordia-grade – stable and repeatable even after millions of actuations
Ordering Information
Each MEMS VOA can be ordered by specifying:
- Lens type / Drive voltage (6.5V / 15V)
- Wavelength
- Fiber type & connector
- Fiber length
- Attenuation range (Bright or Dark)
Conclusion
For system integrators, equipment manufacturers, and network operators looking for a compact, precise, and reliable variable optical attenuator, Feiyi’s MEMS VOA provides an ideal balance of performance and cost.
Contact us today to request a datasheet, sample, or customized quote.
