Variable Optical Attenuators
Linear Digitally Control MEMS Variable Attenuators
The PMOA Series Precision Variable Optical Attenuator (VOA) delivers fast response and precision attenuation with calibrated performance curves, enabling rapid and repeatable adjustments with excellent long-term stability. The design ensures low insertion loss, high repeatability, and drift-free operation under varying environmental conditions. The PMOA supports a wide range of fiber types, including single-mode, multimode, and polarization-maintaining, and operates across a broad spectral band from 750 to 2400 nm. This turnkey unit includes USB and RS232 interfaces with GUI software supporting sequential programming for automated control. A PCB sub-mount version is also available, offering UART control and 0–5 V power input for seamless OEM system integration.
Configuration options
Build & quote
Configure the options below and add your exact build to the enquiry — we confirm the part number and availability.
We confirm the exact part number for your configuration on enquiry.
Attenuation: >45dB · Interface: USB · Off State: Transparent · Wavelength: 1260~1650nm · Package: Regular · Fiber Type: SM 28 · Fiber Cover: 900um Loose Tube · Fiber Length: 1.0m · Connector: None
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Datasheets & documents
System integration
Integration and compatibility
Use these checks to connect Linear Digitally Control MEMS Variable Attenuators to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
- Optical interface and fiber
- Interface: USB, RS232 · Fiber Type: SM 28, 50/125, 62.5/125, SM460, SM600, Hi1060, PM1550, 780HP, PM460, PM630, PM780, PM980, SM2000
- Specify connector polish and fiber architecture together. FC/PC, FC/APC and SMA interfaces, and single-mode, multimode and polarization-maintaining fibers, impose different return-loss, mode-field and alignment requirements.
- Wavelength and loss budget
- Wavelength: 1260~1650nm, 460nm, 630nm, 780nm, 850nm, 1060nm, 2000nm
- Check the Variable Optical Attenuators passband, insertion loss, return loss and power handling at the actual source wavelength; a nominal telecom-band label is not a substitute for the configured range.
Technical FAQ
Integration questions for Linear Digitally Control MEMS Variable Attenuators
Which fiber and connector does the Linear Digitally Control MEMS Variable Attenuators use?
Interface: USB, RS232 · Fiber Type: SM 28, 50/125, 62.5/125, SM460, SM600, Hi1060, PM1550, 780HP, PM460, PM630, PM780, PM980, SM2000. Specify connector polish and fiber architecture together. FC/PC, FC/APC and SMA interfaces, and single-mode, multimode and polarization-maintaining fibers, impose different return-loss, mode-field and alignment requirements.
How should the Linear Digitally Control MEMS Variable Attenuators be included in an optical power budget?
Wavelength: 1260~1650nm, 460nm, 630nm, 780nm, 850nm, 1060nm, 2000nm. Check the Variable Optical Attenuators passband, insertion loss, return loss and power handling at the actual source wavelength; a nominal telecom-band label is not a substitute for the configured range.
Need this configured?
Share your wavelength, fiber type, connector, power handling and control requirements and we will qualify the matching configuration and part number.
Model selection
Nearby series comparison
Compare Linear Digitally Control MEMS Variable Attenuators with the closest available models in the Variable Optical Attenuators family.
| Selection parameter | Linear Digitally Control MEMS Variable Attenuators (current) | Large Core Fiber Variable Attenuator USB/RS232 | Manual No-Gap Broadband Variable Fiber Optical Attenuator — Low-Loss |
|---|---|---|---|
| Wavelength range | 1260~1650nm, 460nm, 630nm, 780nm, 850nm, 1060nm, 2000nm | 1240-1620, 1310, 1550, 850 | 350, 488, 532, 630, 780, 850, 980, 1060, 1310, 1550, 2000 |
| Optical performance | >45dB, >65dB, High Linear >45dB, High Linear >65dB | — | — |
| Fiber type | SM 28, 50/125, 62.5/125, SM460, SM600, Hi1060, PM1550, 780HP, PM460, PM630, PM780, PM980, SM2000 | 105/NA.22, 200/NA.22, 300/NA.22, 400/NA.22, 600/NA.22, 800/NA.22 | SM28, SM28e, Corning XB, SM400, SM450, SM600, Hi780, SM800, Hi980, Hi1060, SM1950, PM350, PM400, PM405, PM460, PM480, PM630, PM780, PM850, PM980, PM1310, PM1550, PM1950, GIF50, GIF625, 105/125, FG50LGA, FG105LCA, FG10LDA |
| Connector / control | None, FC/PC, FC/APC, LC/APC, Special | None, FC/PC, SC/PC, SMA, Special | None, FC/APC, FC/PC, SC/PC, SC/APC, ST/PC, LC/PC, LC/UPC, Special |
