LC-LC OM3 Fiber Optic Loopback module Patch cables OM3 , OM4 , 50 /125 LSZH With Plastic Shell

Fiber Optic Loopback modules are also called optical loopback adapters.They are designed for testing, engineering and the burnin stage of boards or other equipment. Optical loopback adapters provide systemtest engineers a simple but effective way of testing the transmission capability and the receiver sensitivityof network equipment.

Fiber Optic Loopback is provide a media of return patch for a fiber optic signal. Typically it is used for fiber optic testing applications or network restorations.

When used in testing applications, loopback signals are used for diagnosing problems. The best practice is to send a loopback test to network equipment, one at a time for isolating the problem.

Fiber optic loopbacks are designed in a compact footprint. They are compliant with fast Ethernet, fiber channel, ATM and Gigabit Ethernet.

Mini LC multimode loopback is suit for 0.9mm cable and 0.25mm fiber.

Connector’s Standard:

LC: TIA/EIA, FOCIS10, GR-326 EIA/TIA-604-10, IEC61754-20 and JIS C5973.

Specification:

Product Details

Application in Data Center

Collocated with 10G or 40G or 100G LC/UPC interface transceivers

Which to Choose for a Specific Transceiver?

Considering the common features of the transceiver and the loopback, we should think about the connector type, polish type, and cable type when selecting a loopback for the transceiver. The selection guide for some mostly used transceiver modules is summarized in the following tables.

Table 1: Loopback choices for 10G SFP+ transceivers

Model	Interface type	Cable Type	Suited Loopback
10GBASE-USR	LC Duplex (PC)	MMF	LC/UPC Duplex Multimode Fiber Loopback
10GBASE-SR	LC Duplex (UPC)	MMF
10GBASE-LR	LC Duplex (UPC)	MMF
10GBASE-ER	LC Duplex (UPC)	SMF	LC/UPC Duplex Single-mode Fiber Loopback
10GBASE-ZR	LC Duplex (PC)	SMF

Table 2: Loopback choices for 40G QSFP+ transceivers

Model	Interface type	Cable Type	Suited Loopback
40GBASE-CSR4	MTP/MPO (UPC)	MMF	8/12 Fibers MTP/UPC Multimode Fiber Loopback
40GBASE-SR4	MTP/MPO (UPC)	MMF
40GBASE-PLRL4	MTP/MPO (APC)	SMF	8/12 Fibers MTP/APC Single-mode Fiber Loopback
40GBASE-PLR4	MTP/MPO (APC)	SMF
40GBASE-LR4	LC Duplex (PC)	SMF	LC/UPC Duplex Single-mode Fiber Loopback
40GBASE-LR4L	LC Duplex (UPC)	SMF
40GBASE-ER4	LC Duplex (UPC)	SMF
40GBASE-LX4	LC Duplex (UPC)	MMF/SMF	LC/UPC Duplex Multimode/Single-mode Fiber Loopback

Table 3: Loopback choices for 100G QSFP28 transceivers

Model	Interface type	Cable Type	Suited Loopback
100GBASE-SR4	MTP/MPO (UPC)	MMF	8/12 Fibers MTP/UPC Multimode Fiber Loopback
100GBASE-PSM4	MTP/MPO (APC)	SMF	8/12 Fibers MTP/APC Single-mode Fiber Loopback
100GBASE-LR4	LC Duplex (UPC)	SMF	LC/UPC Duplex Single-mode Fiber Loopback

Table 4: Loopback choices for CFP transceivers

Model	Interface type	Cable Type	Suited Loopback
40GBASE-SR4 CFP	MPO/MTP (UPC)	MMF	8/12 Fibers MTP/UPC Multimode Fiber Loopback
40GBASE-LR4 CFP	SC Duplex (UPC)	SMF	SC/UPC Duplex Single-mode Fiber Loopback
40GBASE-FR CFP	SC Duplex (UPC)	SMF
100GBASE-LR4 CFP	SC Duplex(PC/UPC)	SMF
100GBASE-ER4 CFP	SC Duplex(PC/UPC)	SMF
100GBASE-SR4 CFP	MPO/MTP (UPC)	MMF	24 Fibers MTP/UPC Multimode Fiber Loopback

Conclusion

This post discusses specific fiber loopback choices for some most commonly used fiber optic transceivers. For other transceiver modules that are not mentioned in this post, we can also know how to choose a suitable loopback for it by getting details about its interface type, physical contact and cable type.

High Quality Fiber Optic Cable Guarantee

Comprehensive performance testing makes sure the cable work more secure and data transmission more reliable and stable in your network.

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Certification:

Our products are confirmed by these certifications

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         OMC industry co., limited, An ISO 9001:2015 certificated Manufacturer, which was founded by an expert team, has been manufacturing and  exporting FTTX cabling products since 2007. We focus on providing innovative and integrated FTTX cabling solutions for a variety of applications/Networks. Our capabilities include product/solution design, development, enhancement and integration. Our products are among the highest performing in the industry and truly represent the best values in the industry. We help you select the right products for your Optical network’s needs.

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