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Fiber Optic Attenuators – Precision Power Control for Reliable Networks
High-quality fiber optic attenuators – fixed and variable types, LC/SC/FC/ST/MPO connectors, UPC/APC polish, 1dB to 30dB attenuation values. Low insertion loss, factory-tested with test reports. OEM/ODM available.
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What is Fiber Optic Attenuator?
A fiber optic attenuator is a passive device used to reduce the optical power level in a fiber optic link to prevent receiver saturation or to balance signal strength across multiple channels. By introducing controlled insertion loss, attenuators ensure that optical receivers operate within their optimal input power range, maintaining signal integrity and preventing bit errors. They are essential components in telecommunications networks, CATV systems, data centers, and test equipment. YRTFIBER offers a comprehensive range of high‑performance fiber optic attenuators in LC, SC, FC, and ST styles, available in both fixed and variable types, with UPC or APC polish options, to meet diverse network requirements.
Fiber Attenuator Types
Fixed Attenuators – Provide a constant, predetermined level of attenuation. Available in male‑to‑female (plug‑style) and female‑to‑female (adapter‑style) configurations. Ideal for permanent installations where consistent power reduction is required.
Variable Attenuators – Allow adjustable attenuation levels, typically via a mechanical mechanism. Suitable for test and measurement applications where flexible power control is needed.
In‑Line Attenuators – Attenuators integrated into a fiber patch cord, providing attenuation while also extending the fiber link. Ideal for space‑constrained installations.
MPO Attenuators – Multi‑fiber attenuators for high‑density applications, supporting 8 to 24 fibers in a single interface. Designed for 40G/100G/400G data center environments.
Key Specifications
Attenuation values: 1dB to 30dB (standard), custom values available on request
Connector types: LC, SC, FC, ST, MPO (UPC or APC polish)
Fiber types: G.652D, G.657A (singlemode); multimode on request
Attenuation tolerance: ±0.5dB (typical), ±0.3dB available on request
Return loss: ≥ 50 dB (UPC) / ≥ 60 dB (APC)
Operating wavelength: 1260nm – 1650nm (broadband)
Operating temperature: -40 to 85°C
Durability: ≤ 0.2 dB change after 500 mating cycles
Compliance: Telcordia GR‑910, IEC 61753‑2‑3, RoHS, REACH
Typical Applications
Telecom and CATV networks – balancing signal power across long‑haul links
Data center interconnects – preventing receiver saturation in high‑power transceivers
Test and measurement equipment – simulating link loss for system validation
FTTH/FTTx networks – adjusting power levels in PON splitters and distribution
WDM systems – equalizing channel power across multiple wavelengths
Why Choose YRTFIBER?
15+ years of experience, 4M+ fiber‑km annual capacity
Precision attenuation with tight tolerance for consistent performance
100% factory tested – each attenuator comes with attenuation test report
Virgin Corning / Yangtze compatible fiber
Factory pricing – 10–20% more competitive
7–15 working days lead time
3‑year warranty + free engineering support
OEM/ODM available – custom attenuation values, connectors, and packaging
Ordering Process
Inquiry with attenuation value, connector type, polish (UPC/APC), quantity
Quote within 24 h (proforma invoice + lead time + freight)
30% deposit + confirm connector / marking details
Production with in‑process photos/videos
FAT + balance – attenuation test reports reviewed before shipment
Shipping and after‑sales support
Certifications & Standards
ISO 9001 / ISO 14001
Telcordia GR‑910
IEC 61753‑2‑3
RoHS, REACH, CE
UL / CPR on request
Packaging & Shipping
Individual PE bags or plastic trays with protective dust caps
Clear labeling with attenuation value, connector type, polish, and test data
Carton packaging for safe transport
Customized packaging available for OEM orders
Frequently Asked Questions
Fixed or variable attenuator – which should I choose? Fixed attenuators are ideal for permanent installations where consistent power reduction is required. Variable attenuators offer adjustable attenuation and are preferred for test and measurement applications.
What attenuation value do I need? The required attenuation depends on your link power budget and receiver sensitivity. Common values range from 3dB to 20dB. Consult your system specifications or contact our engineers for recommendations.
Male‑to‑female or female‑to‑female – what's the difference? Male‑to‑female (plug‑style) attenuators connect directly to a transceiver or adapter; female‑to‑female (adapter‑style) attenuators connect between two patch cords, similar to a bulkhead adapter.
UPC or APC connector? APC (angled) offers higher return loss (≥ 60 dB) and is preferred for analog video and PON applications; UPC (≥ 50 dB) is standard for most digital networks.
MOQ? From 10 pieces; best pricing from 500 pieces.
Warranty? 3‑year on materials and workmanship.
Ready to order fiber optic attenuators? Send your specs to our engineers now → Reply within 24 working hours.
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