Variable Optical 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
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
Application context
Application guidance is tied to the configured wavelength, fiber interface and optical-budget fields for this family.
Linear Digitally Control MEMS Variable Attenuators: Optical power control depends on preserving the optical budget through the complete path. The 1260~1650nm, 460nm, 630nm, 780nm, 850nm, 1060nm, 2000nm wavelength specification sets source and detector compatibility. The fiber/interface entry (SM 28, 50/125, 62.5/125, SM460, SM600, Hi1060, PM1550, 780HP, PM460, PM630, PM780, PM980, SM2000) must match the connected components.
Linear Digitally Control MEMS Variable Attenuators: Receiver calibration depends on preserving the optical budget through the complete path. The 1260~1650nm, 460nm, 630nm, 780nm, 850nm, 1060nm, 2000nm wavelength specification sets source and detector compatibility. The fiber/interface entry (SM 28, 50/125, 62.5/125, SM460, SM600, Hi1060, PM1550, 780HP, PM460, PM630, PM780, PM980, SM2000) must match the connected components.
Downloads
System integration
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.
Technical FAQ
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: 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.
Share your wavelength, fiber type, connector, power handling and control requirements and we will qualify the matching configuration and part number.
Model selection
Compare Linear Digitally Control MEMS Variable Attenuators with the closest available models in the Variable Optical Attenuators family. Confirm option-dependent values on the final configuration before ordering.
| 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 | Confirm for this model | Confirm for this model |
| 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 | USB, RS232 | USB, RS232 | None, FC/APC, FC/PC, SC/PC, SC/APC, ST/PC, LC/PC, LC/UPC, Special |
