The Yin-Yang Type Fixed Optical Attenuator is a fiber optic device designed to precisely reduce optical power, featuring adjustable attenuation, multiple connector types, and high reliability across standard wavelengths.

Key Specifications

• Connector and Adapter Type: One end functions as a connector, the other as an adapter, allowing dual functionality for easy integration into optical links .
• Attenuation Range: Typically adjustable from 0 to 30 dB, with common fixed values such as 1 dB or 20 dB available .
• Wavelength Compatibility: Operates effectively across 1250–1650 nm, with single-mode applications commonly at 1310 nm and 1550 nm and multi-mode at 850 nm and 1300 nm .
• Connector Types: Available in SC, LC, FC, ST, and MU; ferrule types include PC and APC with 8-degree angled polish for APC variants .
• Return Loss: High return loss ensures minimal signal reflection, typically UPC ≥50 dB, APC ≥60 dB for single-mode fibers, and ≥35 dB for multi-mode fibers .
• Reliability and Standards: Compliant with IEC and RoHS standards, and meets Telcordia GR-910-CORE requirements for telecommunications reliability .
• Operating Temperature: Stable performance across -40°C to +80°C, suitable for diverse environmental conditions .
• Physical Design: Compact, yin-yang (binaural) style for easy identification and handling, with solid construction for repeated use .

Applications

• Device Testing: Calibration and performance testing of optical instruments .
• Inter-device Connections: Ensures optimal optical power between devices and patch cords .
• Network Infrastructure: Used in CATV, MANs, WANs, FTTx, and data center fiber networks .
• Specialized Systems: Suitable for microwave systems, radar anti-interference setups, and automatic gain control circuits .

Summary

The Yin-Yang Type Fixed Optical Attenuator provides precise optical power control, high interchangeability, and reliable performance across standard fiber optic systems. Its versatility in connector types, attenuation values, and wavelength compatibility makes it suitable for both testing and operational network applications, ensuring signal integrity and preventing receiver overload.