MEMS Variable Optical Attenuator
MEMS Variable Optical Attenuator is part of the fiber optic attenuator range built by Ever Expresslink Limited in Ningbo, China.
Controlled loss, for when a receiver is being overdriven
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Product Overview
MEMS Variable Optical Attenuator is part of the fiber optic attenuator range built by Ever Expresslink Limited in Ningbo, China.
It is one of 10 items in this range. A typical application is correcting an over-powered PON path at the splitter output. What the range is built to give you there: known, stable loss instead of improvised fiber coils.
The problem it addresses is bit errors that look like contamination but are actually overload. A practical note that applies across this range: install on the receive side rather than the transmit side. Specifications for a particular configuration are confirmed on the quotation rather than assumed from the designation.
Key Benefits
- Supplied as MEMS Variable Optical Attenuator, so the part you receive matches the designation you ordered against
- Known, stable loss instead of improvised fiber coils
- Fixed values for production use and tunable versions for the bench
- Male-to-female plug styles that drop straight into an existing port
- Available across the main connector types and both polish styles
Problems It Solves
- Test benches that need a repeatable, known loss rather than a coil of fiber
- 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
Application Scenarios
- Bringing a short DWDM or long-reach link into receiver range
- Balancing levels across a CATV optical distribution network
- Characterising receiver sensitivity on a test bench
- Simulating span loss during equipment qualification
Who It Is For
- Maintenance teams diagnosing overload symptoms
- Commissioning engineers bringing links into their power window
- Data-center teams running long-haul optics over short distances
- Test laboratories characterizing receivers
Technical Features
- UPC and APC polish options
- Fixed attenuation values across the common dB steps
- Tunable versions with a continuously adjustable range
- MEMS variable versions for programmable bench work
Materials
- Doped fiber or coated-ferrule attenuating element
- Zirconia ceramic ferrule
- Metal or thermoplastic housing
- Precision adjustment mechanism on tunable versions
Specifications
| Product Designation | MEMS Variable Optical Attenuator |
|---|---|
| Product Family | Fiber Optic Attenuator |
| 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
Handling MEMS Variable Optical 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 MEMS Variable Optical Attenuator
What do you need from us to quote MEMS Variable Optical 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 an attenuator fix errors caused by a dirty connector?
No, and the two are easy to confuse. Clean and inspect first. Only when power is genuinely above the receiver's maximum input is an attenuator the right answer.
How do I choose the right attenuation value?
Measure the received power with a power meter, compare it against the receiver's specified input range, and pick the value that puts you near the middle of that range rather than at its edge.
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.
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Request Pricing For MEMS Variable Optical 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.