BWN-LB-LC-SM
MPO Loopback
LC/UPC Singlemode Fiber Optic Loopback
The BWNFiber LC/UPC Singlemode Fiber Optic Loopback is a compact passive testing device that creates a direct optical return path between the TX and RX channels of an LC duplex port. It is built with G.657A2 bend-insensitive singlemode fiber and is designed for rapid verification of singlemode optical ports and transceivers without external cabling.
LC/UPC Singlemode Fiber Optic Loopback Specifications
| Item | Value |
|---|---|
| Part Number | BWN-LB-LC-SM |
| Description | LC/UPC Singlemode Fiber Optic Loopback |
| Fiber Type | Singlemode G.657A2 |
| Connector Type | LC/UPC duplex |
| Insertion Loss | ≤1.0dB @1310nm,1550nm |
| Return Loss | ≥60dB |
| Operating Temperature | -20℃~+75℃ |
| Storage Temperature | -40℃~+75℃ |
Purpose-Built Optical Return Path for Equipment Testing
The BWNFiber LC/UPC Singlemode Fiber Optic Loopback is a compact passive testing device that creates a direct optical return path between the TX and RX channels of an LC duplex port. It is built with G.657A2 bend-insensitive singlemode fiber and is designed for rapid verification of singlemode optical ports and transceivers without external cabling.
The compact LC duplex format helps technicians verify supported switch, server and transceiver ports without installing a separate remote link. The internal optical path uses G.657A2 singlemode (9/125 µm) and keeps the test setup contained at the equipment interface.
Connector: LC/UPC duplexInterface selected for the specified optical equipment and test port.
Fiber: G.657A2 singlemode (9/125 µm)Internal fiber type matched to the intended optical interface.
Insertion Loss: ≤ 1.0 dB @ 1310/1550 nmFactory-tested optical loss limit for the finished loopback assembly.
Return Loss: ≥ 60 dBSpecified reflected-power performance for the singlemode optical path.
Typical Applications
- SFP / SFP+ / SFP28 singlemode transceiver testing
- Singlemode switch and router port verification
- Server optical interface validation
- Laboratory and production burn-in testing
Use note: This passive loopback supports port-level checks. It does not replace a calibrated optical power meter or certify an installed fiber link.
Why Source Fiber Loopbacks from BWNFiber?
- 100% optical testing: finished assemblies are checked against the stated optical requirements before shipment.
- Sample evaluation: verify the loopback with your target equipment before moving to a larger order.
- Project identification: discuss labeling, packaging and traceability requirements for deployment or production use.
- Configuration review: share the equipment model, interface and channel requirements for an application-level check.
Want to Test Before You Commit?
Send the target equipment model and quantity to request a sample, configuration review, datasheet or bulk quotation.
FAQ
Frequently Asked Questions
What does the LC/UPC Singlemode Fiber Optic Loopback test?
It routes transmitted optical power back to the receive path so connected equipment can run supported port checks, alarms and diagnostic routines. The loopback is passive and does not create a measurement result by itself.
How do I confirm compatibility before ordering?
Check the connector interface, fiber type, optical power range and test method. For MPO products, also confirm gender, pin configuration, polarity, fiber count and TX/RX channel mapping.
Can I request samples before a bulk order?
Yes. Include the target equipment, expected quantity and any labeling or packaging requirements so the sample configuration can be reviewed before shipment.
Can labeling and packaging be customized?
Project-specific identification and packaging can be discussed. Provide your labeling format, traceability requirements and packing quantities for review.
Related Products
Related Products
Explore additional fiber optic products related to this item and suitable for similar network deployment needs.
