Variable Optical Attenuators
In-Line Fixed Fiber Attenuator
The ILFA series of In-Line Fixed Attenuators is designed for precise optical power adjustment to a desired level. Featuring a fused passthrough fiber design, it ensures high reliability, making it suitable for airborne and space applications. The attenuator provides fixed attenuation levels ranging from 0 dB to 20 dB, with 0.5 dB increments for fine-tuned power control. We offer custom configurations to meet specific application requirements, including different connector types and end-face configurations. PM Panda fiber (PM780-HP, PM980, PM1550, PM1950)
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.
Wavelength: 780nm · Attenuation: 1dB · Optical Power: 0.5W · Fiber Type: SMF-28 · Package: 3x54 Tube · Fiber Buffer: 0.9mm Tube · Fiber Length: 1.0 m · Connector: FC/APC · Space Application: Non
System integration
Integration and compatibility
Use these checks to connect In-Line Fixed Fiber Attenuator 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: SMF-28, SM1950, 780HP, SM800, SM980, Hi1060, PM1550, PM1950, PM1310, PM850, PM980, PM780, MM 50/125μm, MM 62.5μm, 105/125μm, PLMA 10/125 · Fiber Buffer: 0.9mm 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
- Wavelength: 780nm, 830nm, 980nm, 1060nm, 1310nm, 1410nm, 1550nm, 1990nm, 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 In-Line Fixed Fiber Attenuator
Which fiber and connector does the In-Line Fixed Fiber Attenuator use?
Fiber Type: SMF-28, SM1950, 780HP, SM800, SM980, Hi1060, PM1550, PM1950, PM1310, PM850, PM980, PM780, MM 50/125μm, MM 62.5μm, 105/125μm, PLMA 10/125 · Fiber Buffer: 0.9mm 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 In-Line Fixed Fiber Attenuator be included in an optical power budget?
Wavelength: 780nm, 830nm, 980nm, 1060nm, 1310nm, 1410nm, 1550nm, 1990nm, 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 In-Line Fixed Fiber Attenuator with the closest available models in the Variable Optical Attenuators family.
| Selection parameter | In-Line Fixed Fiber Attenuator (current) | High Speed Premium Variable Fiber Optical Attenuator 350-2400nm, 35dB | Large Core Fiber Variable Attenuator USB/RS232 |
|---|---|---|---|
| Wavelength range | 780nm, 830nm, 980nm, 1060nm, 1310nm, 1410nm, 1550nm, 1990nm, 2000nm | 1550nm, 780nm, 850nm, 1310nm, 1060nm | 1240-1620, 1310, 1550, 850 |
| Optical performance | 1dB, 2dB, 3dB, 5dB, 10dB, 15dB, 20dB | — | — |
| Fiber type | SMF-28, SM1950, 780HP, SM800, SM980, Hi1060, PM1550, PM1950, PM1310, PM850, PM980, PM780, MM 50/125μm, MM 62.5μm, 105/125μm, PLMA 10/125 | SMF-28, HI1060, HI780, PM850, PM1550, PM980 | 105/NA.22, 200/NA.22, 300/NA.22, 400/NA.22, 600/NA.22, 800/NA.22 |
| Connector / control | FC/APC, FC/PC | None, FC/APC, Special | None, FC/PC, SC/PC, SMA, Special |
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