SC Attenuator
SC Attenuator is part of the fiber optic attenuator range built by Ever Expresslink Limited in Ningbo, China. It is built on the SC (Subscriber Connector) interface.
Controlled loss, for when a receiver is being overdriven
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Product Overview
SC Attenuator is part of the fiber optic attenuator range built by Ever Expresslink Limited in Ningbo, China. It is built on the SC (Subscriber Connector) interface.
We supply female to male SC fiber optic attenuator and bulkhead SC fiber optic attenuator. They fit typical 1310nm and 1550nm single mode fiber applications. Attenuation range is from 1dB to 30dB. We supply both SC UPC fiber optic attenuator and SC APC fiber optic attenuator.
The SC fiber attenuators are with SC connector interface. They are with premium ceramic sleeves. Plug type SC fiber attenuator is a female to male type, while bulkhead SC fiber attenuator is a female to female type. The SC fiber optic attenuators operation wavelength range is 1240nm to 1620nm. They are used inline to decrease the optical power light in the systems for both lab and commercial applications. The SC fiber optic attenuators are very good performance and fairly good price.
SC pairs a 2.5 mm ferrule with a square push-pull housing that clicks into the adapter and releases by pulling the body straight back. SC bodies clip together into duplex pairs. Check polarity before you clip, because a reversed duplex clip is easy to build and hard to spot in a cabinet.
Key Benefits
- Supplied as SC Attenuator, so the part you receive matches the designation you ordered against
- Available across the main connector types and both polish styles
- Low back-reflection versions for return-loss-sensitive paths
- Known, stable loss instead of improvised fiber coils
- Fixed values for production use and tunable versions for the bench
Problems It Solves
- Commissioning delays while power levels are brought into range
- Ad-hoc attenuation methods that drift with temperature
- Receiver saturation on short links built with high-power transmitters
- Bit errors that look like contamination but are actually overload
Application Scenarios
- Enterprise backbone links
- Characterising receiver sensitivity on a test bench
- Simulating span loss during equipment qualification
- Correcting an over-powered PON path at the splitter output
- Bringing a short DWDM or long-reach link into receiver range
Who It Is For
- Test laboratories characterizing receivers
- CATV and RF-over-glass operators balancing distribution levels
- Maintenance teams diagnosing overload symptoms
- Commissioning engineers bringing links into their power window
Technical Features
- SC (Subscriber Connector) interface
- SC bodies clip together into duplex pairs. Check polarity before you clip, because a reversed duplex clip is easy to build and hard to spot in a cabinet.
- Male-to-female plug style for direct insertion into a port
- UPC and APC polish options
- Fixed attenuation values across the common dB steps
- Tunable versions with a continuously adjustable range
Materials
- Doped fiber or coated-ferrule attenuating element
- Zirconia ceramic ferrule
- Metal or thermoplastic housing
- Precision adjustment mechanism on tunable versions
Specifications
| Product Designation | SC attenuator |
|---|---|
| Product Family | Fiber Optic Attenuator |
| Connector Interface | SC (Subscriber Connector) |
| Manufactured In | Ningbo, China |
| Warranty | One year against defects in materials and workmanship |
Values shown are those carried by the product designation. Dimensional and optical values for a specific order are confirmed on the quotation.
Manufacturing Process
- Attenuating element preparation to the target value
- Connector assembly and polish
- Attenuation calibration against a reference
- Return loss verification
- Marking, capping and packing
Quality Control
- Attenuation value verified per unit against a calibrated reference
- Return loss measured on every unit
- Wavelength response checked on sample units
- Temperature stability sampled per production lot
- Marking accuracy checked against the measured value
Customization Options
- Attenuation value to your specification
- Fixed, tunable or MEMS variable format
- Connector type and polish
- Low back-reflection versions
- Matched sets for multi-channel balancing
Compared With Other Options
| LC | LC is half the footprint and doubles port density; SC is easier to handle in a crowded closure |
|---|---|
| FC | FC's threaded nut resists vibration; SC is faster to patch and re-patch |
Handling SC Attenuator
Before You Order
- Measure the actual received power before choosing a value
- Choose the value that lands mid-window, not at the edge of the receiver range
- Install on the receive side rather than the transmit side
In Service
- Use APC versions on paths where return loss is critical
- Re-measure after installation to confirm the link is inside its window
- Record the installed value in the link documentation
Questions About SC Attenuator
What do you need from us to quote SC Attenuator?
The quantity, the destination and anything that has to match on your side: connector and polish at each end, fiber mode and core size, and length where the item is an assembly. If you are matching a part you already buy, send the sample and we will quote against it.
Can SC Attenuator be supplied with a different connector interface?
Yes. SC (Subscriber Connector) is what this designation carries, and the same family is stocked across the other mainstream connector standards. Tell us the port you have to mate with and we will confirm the equivalent part.
Where should the attenuator go, transmit or receive side?
The receive side. Attenuating at the transmitter reduces the margin available for the span itself, whereas attenuating at the receiver directly addresses the overload.
What is the difference between fixed and tunable attenuators?
Fixed units hold one calibrated value and are what you install in production. Tunable units let you sweep a range, which is what a test bench or a commissioning engineer wants while finding the right value.
Do you supply APC attenuators?
Yes. Use APC on PON, CATV and RF-over-glass paths where back reflection has to stay low. The polish is specified per order.
More Fiber Optic Attenuator
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MU Attenuator
We supply both UPC MU fiber optic attenuator and APC MU fiber optic attenuators for single mode applications.
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We supply single mode LC fiber optic attenuators including the bulkhead LC attenuator and female to male LC fiber attenuator.
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Request Pricing For SC Attenuator
Tell us the quantity and destination. If you are matching a part you already buy, send the sample and we will quote against it.