DESCRIPTION
The FC Single Mode Plug-in Fixed Fiber Optic Attenuator is specifically designed for precise signal control in a variety of optical networks. Its robust construction and accurate attenuation make it a dependable choice for telecommunication networks, data centers, and FTTH deployments. The plug-in male-to-female design simplifies installation and enhances flexibility.
Feature Details

- Accurate Signal Attenuation: Ensures reliable and consistent performance, maintaining optimal network efficiency.
- Rugged Construction: Built for durability and reliability in demanding environments.
- Superior Optical Performance: Offers low insertion loss and high return loss for optimal signal transmission.
- Broad Compatibility: Suitable for various single mode fiber applications, ensuring versatile usage.
- User-Friendly Installation: Male/female plug-in configuration simplifies system integration and maintenance.
Product Specifications
| Fiber Connector | FC UPC/APC |
|---|---|
| Transfer Mode | Single mode |
| Connector Gender | Fixed Male to Female |
| Attenuation Range | 0-25dB |
| Attenuation Accuracy | ±0.5dB(1dB-10dB);±1.0dB(11dB-25dB) |
| Available Wavelengths | 1310nm,1550nm,1310&1550nm |
| Wavelength Dependence | <0.3dB Change in insertion loss for 1310-1550nm |
| Return Loss | ≥50dB(UPC);≥60dB(APC) |
| Polarization Dependent Loss | ≤0.2dB |
| Temperature Range | -40-80°C(≤0.2dB in insertion loss) |
| Humidity Range | +/-0.2dB Change in 10% to 90% relative Humidity Range |
| Vibration | ≤0.1dB Change between 10Hz to 55Hz |
| Drop | +/-0.2dB after 8 drops from 1.8meters onto a hard surface |
| Maximum Optical Input Power | 200mW |
Application Details

- Telecommunication Networks: Regulates signal levels for reliable data transmission.
- Data Centers: Balances optical signals for efficient and high-speed data processing.
- FTTH Networks: Prevents signal overload, ensuring stable connections in fiber-to-the-home installations.
- Optical Distribution Frames: Facilitates precise signal management and routing in complex network setups.
Selection Notes
- Typically selected when an FC single-mode link needs a fixed, known attenuation value (up to 25 dB) to prevent receiver overload or to stabilize optical power during commissioning/testing, using a male-to-female plug-in format for quick insertion at ODF/patch points.
- May not be appropriate when the attenuation target, wavelength plan (1310/1550), or polish convention (FC/UPC vs FC/APC) isn’t clearly defined for the link segment, since an incorrect fixed value or polish mismatch can under-power the receiver or mask underlying link issues.
FAQ
Q1: What is the purpose of a fixed fiber optic attenuator?
It reduces optical signal power by a defined value to prevent receiver overload and stabilize network performance.
Q2: What attenuation values are available?
Fixed attenuation options are available from 1 dB up to 25 dB.
Q3: What is the difference between FC/UPC and FC/APC attenuators?
UPC offers low insertion loss, while APC provides higher return loss for reduced back reflection.
Q4: Is this attenuator suitable for single-mode networks only?
Yes, this model is designed specifically for single-mode fiber applications.
Q5: How is the attenuator installed?
It uses a male-to-female plug-in design for quick installation without special tools.
Q6: Can it be used in FTTH systems?
Yes, it is widely used to manage optical power levels in FTTH access networks.
Q7: What is the maximum supported optical input power?
The attenuator supports optical input power up to 200 mW.









