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Loopback Fiber Testers - FC, LC, SC, MPO, MTJR Connectors

ShowMeCables offers a variety of fiber optic loopback plugs with FC, LC, MTRJ, MPO, and SC connector types. Our loopback testers are available for single-mode (OS1) or multimode (OM1 and OM2) connections. These fiber optic loopback cables are available in LC-LC, SC-SC, and FC-FC configurations with 9/125, 62.5/125, or 50/125 microns, providing an economical solution for numerous fiber optic test applications. We use corning and cladding optical fiber with ceramic connectors for our single-mode and multimode duplex fiber cable loopbacks. The UPC (Ultra Physical Contact) polish used in these connectors from ShowMeCables offers a better surface finish with reduced back reflection. It includes a locking mechanism that ensures solid connections, as well as a yellow or orange riser-rated PVC zip cord jacket. Our loopback plugs are tested individually and use a sizable yet manageable fiber loop to avoid bend loss.

The loopback testers from ShowMeCables have an attenuation level of up to 20 dB, allowing direct (looping back) connection between the transmitter and receiver ports without requiring an additional fiber cable or inline attenuators. These attenuated fiber loopback plugs make it simple and quick to evaluate the functionality and provisioning of fiber optic network links. Our MPO loopback cables are 12-channel MPO connectors without alignment pins and are ideal in QSFP applications. Fiber optic loopback plugs are suitable for R&D, fiber labs, telecom and FTTX, testing, telecom and Datacom port provisioning, and troubleshooting applications.

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  1. LC/LC 62.5/125 Multimode Fiber Optic Loopback Cable - OM1
    LC/LC 62.5/125 Multimode Fiber Optic Loopback Cable - OM1
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    62.5 Microns | UPC Polish | Orange Jacket | OFNR Riser-Rated | For Testing Network Equipment Learn More
    SKU: 35-100-001
    Quantity Discount Pricing
    1-9 10-24 25-49 50-99 100+
    $22.79 $20.99 $20.19 $19.39 $18.59

    Quantity available: 34

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  2. LC/LC 9/125 Singlemode Fiber Optic Loopback Cable - OS1
    LC/LC 9/125 Singlemode Fiber Optic Loopback Cable - OS1
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    9 Microns | UPC Polish | Yellow Jacket | OFNR Riser-Rated | For Testing Network Equipment Learn More
    SKU: 35-100-002
    Quantity Discount Pricing
    1-9 10-24 25-49 50-99 100+
    $22.59 $20.79 $19.99 $19.19 $18.39

    Quantity available: 141

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  3. LC/LC 50/125 Multimode Fiber Optic Loopback Cable - OM2
    LC/LC 50/125 Multimode Fiber Optic Loopback Cable - OM2
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    50 Microns | UPC Polish | Orange Jacket | OFNR Riser-Rated | For Testing Network Equipment Learn More
    SKU: 35-100-003
    Quantity Discount Pricing
    1-9 10-24 25-49 50-99 100+
    $21.79 $20.19 $19.39 $18.59 $17.59

    Quantity available: 20

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  4. SC/SC 62.5/125 Multimode Fiber Optic Loopback Cable - OM1
    SC/SC 62.5/125 Multimode Fiber Optic Loopback Cable - OM1
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    62.5 Microns | UPC Polish | Orange Jacket | OFNR Riser-Rated | For Testing Network Equipment Learn More
    SKU: 35-200-001
    Quantity Discount Pricing
    1-9 10-24 25-49 50-99 100+
    $22.59 $20.79 $19.99 $19.19 $18.39

    Quantity available: 15

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  5. SC/SC 9/125 Singlemode Fiber Optic Loopback Cable - OS1
    SC/SC 9/125 Singlemode Fiber Optic Loopback Cable - OS1
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    9 Microns | UPC Polish | Yellow Jacket | OFNR Riser-Rated | For Testing Network Equipment Learn More
    SKU: 35-200-002
    Quantity Discount Pricing
    1-9 10-24 25-49 50-99 100+
    $22.59 $20.79 $19.99 $19.19 $18.39

    Quantity available: 39

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  6. SC/SC 50/125 Multimode Fiber Optic Loopback Cable - OM2
    SC/SC 50/125 Multimode Fiber Optic Loopback Cable - OM2
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    50 Microns | UPC Polish | Orange Jacket | OFNR Riser-Rated | For Testing Network Equipment Learn More
    SKU: 35-200-003
    Quantity Discount Pricing
    1-9 10-24 25-49 50-99 100+
    $22.59 $20.79 $19.99 $19.19 $18.39

    Quantity available: 12

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  7. FC/FC 62.5/125 Multimode Fiber Optic Loopback Cable - OM1
    FC/FC 62.5/125 Multimode Fiber Optic Loopback Cable - OM1
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    62.5 Microns | UPC Polish | Orange Jacket | OFNR Riser-Rated | For Testing Network Equipment Learn More
    SKU: 35-400-001
    Quantity Discount Pricing
    1-9 10-24 25-49 50-99 100+
    $25.99 $25.39 $24.39 $23.79 $22.99

    Quantity available: 14

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  8. FC/FC 9/125 Singlemode Fiber Optic Loopback Cable - OS1
    FC/FC 9/125 Singlemode Fiber Optic Loopback Cable - OS1
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    9 Microns | UPC Polish | Yellow Jacket | OFNR Riser-Rated | For Testing Network Equipment Learn More
    SKU: 35-400-002
    Quantity Discount Pricing
    1-9 10-24 25-49 50-99 100+
    $27.99 $25.39 $24.19 $22.59 $21.19

    Quantity available: 14

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  9. FC/FC 50/125 Multimode Fiber Optic Loopback Cable - OM2
    FC/FC 50/125 Multimode Fiber Optic Loopback Cable - OM2
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    50 Microns | UPC Polish | Orange Jacket | OFNR Riser-Rated | For Testing Network Equipment Learn More
    SKU: 35-400-003
    Quantity Discount Pricing
    1-9 10-24 25-49 50-99 100+
    $19.19 $17.79 $17.19 $16.79 $16.19

    Quantity available: 11

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  10. Fiber Loopback LC Multimode 50/125, xdB Attenuation
    Fiber Loopback LC Multimode 50/125, xdB Attenuation
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    xdB Attenuated Loopback | LC Connector | 50/125 Multimode | OFNR Riser-Rated

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    SKU: FLA-LCUMM-xxD
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  11. Fiber Loopback LC Single Mode 9/125, xdB Attenuation
    Fiber Loopback LC Single Mode 9/125, xdB Attenuation
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    xdB Attenuated Loopback | LC Connector | 9/125 Single Mode | OFNR Riser-Rated

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    SKU: FLA-LCUSM-xxD
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  12. Fiber Loopback MPO Female Single Mode, xdB Attenuation
    Fiber Loopback MPO Female Single Mode, xdB Attenuation
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    xdB Attenuated Loopback | MPO 12 Fiber Female Connector | Single Mode | OFNR Riser-Rated

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    SKU: FLA-MPF12SM-xxD
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  13. Fiber Loopback SC Multimode 50/125, xdB Attenuation
    Fiber Loopback SC Multimode 50/125, xdB Attenuation
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    xdB Attenuated Loopback | SC Connector | 50/125 Multimode | OFNR Riser-Rated

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    SKU: FLA-SCUMM-xxD
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  14. Fiber Loopback SC Single Mode 9/125, xdB Attenuation
    Fiber Loopback SC Single Mode 9/125, xdB Attenuation
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    xdB Attenuated Loopback | SC Connector | 9/125 Single Mode | OFNR Riser-Rated

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    SKU: FLA-SCUSM-xxD
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  15. L-Com Fiber Loopback Cable - MPO w/o Pins - 50/125
    L-Com Fiber Loopback Cable - MPO w/o Pins - 50/125
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    12 Fiber MPO Connector | No Alignment Pins | QSFP Applications | 100% Functionally Tested

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    SKU: FOL-MPO
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    1+
    $55.99

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