sales@foscoconnect.com
(510) 319-9878
Silicon Valley, CA, USA
Overview
The MU Attenuator is a precision optical component designed to reduce signal power in singlemode fiber optic systems. Featuring a male-to-female (build-out) configuration, this device allows for direct connection between existing network components, such as patch cords and adapters, to balance power levels across a link.
Engineered with high-quality doped fiber, this attenuator provides stable performance across both 1310nm and 1550nm operating wavelengths. It is intended for use in professional telecommunications, data center interconnects, and outside plant fiber installations where signal attenuation is required to prevent receiver saturation.
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Key Features
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Dual-Wavelength Operation
Optimized for use in both 1310nm and 1550nm singlemode applications, ensuring flexibility across common network deployments. -
Male-to-Female Configuration
The build-out design allows for easy integration into existing fiber paths without requiring additional patch cords. -
Doped Fiber Technology
Uses specialized doped fiber construction to provide consistent and repeatable attenuation levels. -
Precision UPC Polish
Features a UPC (Ultra Physical Contact) polish to minimize back-reflection and maintain high return loss. -
Compact Form Factor
The small MU footprint saves valuable space in high-density rack and patch panel environments. -
Fixed Attenuation
Provides a permanent 4dB reduction in optical power, eliminating the variability associated with variable attenuators.
Applications
- Telecommunications and CATV networks
- Data center equipment interconnection
- Fiber optic test and measurement
- Power level balancing in DWDM systems
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | F19521A04 |
| Connector Type | MU (Male to Female) |
| Attenuation Value | 4dB |
| Fiber Type | Singlemode |
| Operating Wavelength | 1310nm / 1550nm |
| Polish | UPC |
Frequently Asked Questions
What is the primary function of this attenuator?
It is used to reduce the signal strength of a singlemode fiber optic link by 4dB to ensure it falls within the required operating range of receivers.
Can this be used on multimode fiber?
No, this is specifically designed for singlemode fiber optic systems.
Is the attenuation fixed?
Yes, this is a fixed attenuator with a set value of 4dB.
What does the male-to-female designation mean?
It means one end connects directly into a bulkhead adapter (male side), and the other end accepts a connector (female side), acting as a build-out.
Is this compatible with 1550nm networks?
Yes, it is designed for both 1310nm and 1550nm wavelengths.

