BLUELAN BlueOptics Singlemode SC Simplex 2dB Fibre Optic Attenuator (SFA22BK2)

The BLUELAN BlueOptics SFA22BK2 is a fixed 2dB fiber optic attenuator with SC simplex connectors, built for precise signal reduction in singlemode networks. Unlike variable attenuators that can drift, this fixed attenuator maintains a stable 2dB attenuation level across a wide wavelength range from 1260nm to 1650nm, making it suitable for both 1310nm and 1550nm transmission windows.

Highlights

• Fixed 2dB attenuation with tight ±0.5dB tolerance
• SC simplex male-to-female configuration with UPC polish
• Ceramic ferrule and nickel-plated brass housing for durability
• High return loss ≥50dB and low PDL ≤0.2dB
• Operating temperature range -40°C to +85°C

In daily use

Install the SFA22BK2 inline to reduce optical power at the receiver, preventing overload and bit errors in short links or high-power transmitters. The SC connectors provide a push-pull latching mechanism for secure connections, and the metal housing withstands repeated mating cycles in patch panels or equipment interfaces.

Full specifications

• Product type: Fiber optic attenuator
• Fiber mode: Singlemode
• Attenuation level: 2 dB
• Connector type: SC simplex
• Polish type: UPC
• Ferrule material: Ceramic
• Housing material: Nickel-plated brass
• Wavelength range: 1260 nm - 1650 nm
• Attenuation tolerance: ±0.5 dB
• Return loss: ≥50 dB
• Polarization dependent loss (PDL): ≤0.2 dB
• Maximum optical power: 200 mW (+23 dBm)
• Operating temperature: -40°C to +85°C
• Storage temperature: -40°C to +85°C
• Durability: >1000 mating cycles

Final note

The SFA22BK2 is a reliable fixed attenuator for precise power adjustment in singlemode fiber links, offering stable performance and robust construction for long-term use.