DESCRIPTION
This SC/APC Fixed Fiber Optic Attenuator (Male-Female Type) is designed to reduce optical signal power by a fixed level without distorting the signal waveform. Ideal for singlemode fiber applications, it features a simple plug-in form factor compatible with SC/APC connector interfaces. The attenuator is constructed with high-quality ceramic ferrules and precision doped fiber or air gap structure to ensure reliable attenuation performance and signal stability over a wide range of frequencies.
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Feature Details
- High Attenuation Precision: Guarantees consistent output levels, perfect for high-speed network environments.
- Laser-Optimized Design: Effectively handles high-power input signals, ensuring safe transmission.
- Easy to Use: Plug directly into SC/APC adapter ports without special tools or configuration.
- Long-Term Durability: Excellent mechanical and environmental stability with robust plastic housing and zirconia ferrule.
Product Specifications
| Parameter | Description |
| Connector Type | SC/APC Male to Female |
| Fiber Type | Singlemode (SM) 9/125μm |
| Attenuation Range | 1dB to 25dB (±0.5dB tolerance) |
| Return Loss | ≥60 dB |
| Insertion Loss | ≤0.6 dB (excluding attenuation value) |
| Operating Wavelength | 1260~1625 nm |
| Operating Temperature | -40°C to +80°C |
| Storage Temperature | -40°C to +85°C |
| Body Material | High-density plastic with ceramic ferrule |
| Durability | > 1000 mating cycles |
Application Details
- In metro and access networks, these attenuators are critical for signal equalization when fiber links vary in length.
- In FTTx deployments, it ensures all optical network terminals (ONT/ONU) receive standardized power input from the OLT.
- In optical lab environments, it supports test equipment tuning, calibration, and simulation scenarios.
- In cross-connect systems, they are ideal for managing link budgets across patch panels or distribution frames.
Selection Notes
- Typically selected in PON/FTTx and access networks where SC/APC ports need a fixed, known attenuation value (1–25 dB) to keep receiver input power within range and maintain stable link budgets across different fiber lengths.
- May not be appropriate when the required attenuation target, wavelength plan (1260–1625 nm usage), or the site’s SC/APC ecosystem consistency isn’t clearly defined, since an incorrect fixed value can under-power the receiver or mask real link issues during troubleshooting.
FAQ
Q1: What is the function of a fixed fiber optic attenuator?
It reduces optical signal power by a fixed amount to protect receivers and stabilize network performance.
Q2: What attenuation values are available for this SC/APC attenuator?
Standard fixed values range from 1 dB to 25 dB.
Q3: Why is SC/APC preferred in PON and FTTx networks?
SC/APC provides very low back reflection, which is critical for reflection-sensitive access networks.
Q4: Is this attenuator suitable for single-mode fiber only?
Yes, this model is designed specifically for 9/125 µm single-mode fibers.
Q5: How is the attenuator installed?
It features a plug-in male-to-female design and installs directly into an SC/APC adapter port.
Q6: Can it be used for optical testing and calibration?
Yes, it is commonly used to adjust signal levels for power meter testing and diagnostics.
Q7: How durable is this attenuator?
It is rated for more than 1000 mating cycles with stable optical performance.
