Variable Optical Attenuators
Manual Variable Fiber Optical Attenuator — Regular
This Manal VOA is based on a pair of fiber collimator coupling between a movable blocker, featuring low cost. It has a broadband AR coating.

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.
Type: Normally Open · Wavelengths: 1250-1640nm · Fiber Type: SM28 · Fiber Cover: Bare fiber · Fiber Length: 0.25m · Connectors: FC/APC
System integration
Integration and compatibility
Use these checks to connect Manual Variable Fiber Optical Attenuator — Regular to the surrounding optical, mechanical and control system. Every value shown is taken from this model's own specification record.
- Optical interface and fiber
- Fiber Type: SM28, PM 1550, PM 1310, 50 μm, 60 μm · Fiber Cover: Bare fiber, 900um tube, 3mm tube
- 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
- Wavelengths: 1250-1640nm, 1310nm, 850nm, 850-1310nm
- 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 Manual Variable Fiber Optical Attenuator — Regular
Which fiber and connector does the Manual Variable Fiber Optical Attenuator — Regular use?
Fiber Type: SM28, PM 1550, PM 1310, 50 μm, 60 μm · Fiber Cover: Bare fiber, 900um tube, 3mm tube. 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 Manual Variable Fiber Optical Attenuator — Regular be included in an optical power budget?
Wavelengths: 1250-1640nm, 1310nm, 850nm, 850-1310nm. 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 Manual Variable Fiber Optical Attenuator — Regular with the closest available models in the Variable Optical Attenuators family.
| Selection parameter | Manual Variable Fiber Optical Attenuator — Regular (current) | Manual No-Gap Broadband Variable Fiber Optical Attenuator — Low-Loss | MEMS Broadband Optical Attenuator – Fiber-Fiber™ |
|---|---|---|---|
| Wavelength range | 1250-1640nm, 1310nm, 850nm, 850-1310nm | 350, 488, 532, 630, 780, 850, 980, 1060, 1310, 1550, 2000 | 405 – 532 nm / 480 – 650 nm / 620 – 650 nm / 760 – 800 nm / 830 – 870 nm / 980 – 1550 nm / 960 – 1080 nm / 1020 – 1900 nm / 1.7 – 2.3 µm |
| Fiber type | SM28, PM 1550, PM 1310, 50 μm, 60 μm | 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 | SM400 / SM450 / SM600 / Hi780 / SM800 / Hi980 / Hi1060 / SM28 / SM1950 |
| Connector / control | FC/APC | None, FC/APC, FC/PC, SC/PC, SC/APC, ST/PC, LC/PC, LC/UPC, Special | — |
Related variable optical attenuators
Linear Digitally Control MEMS Variable Attenuators
Large Core Fiber Variable Attenuator USB/RS232
SFP Variable Optical Attenuator 12
High Power Inline Variable Fiber Attenuator up to 20W USB/RS232
Ultra-Mini MEMS Variable Attenuation Array
High Speed Premium Variable Fiber Optical Attenuator 350-2400nm, 18dB