Fiber Optic Network MPO/MTP Loopback


Our MPO loopback tester uses a snap-on mechanism with an MPO connector to fasten optic cables.


Installing fiber optics requires careful and meticulous handling, as the integrity of the signal is sensitive to any type of manipulation.

To diagnose and calibrate any errors that may affect fiber optics performance, many tools are available, including loopback testers.

These simple yet effective tools are compact in size and thorough in determining signal continuity from one end to the other.

Our MPO loopback tester uses a snap-on mechanism with an MPO connector to fasten optic cables, making it a reliable and efficient solution for testing fiber optics.

By using our loopback tester, you can quickly determine the source of any problems and address the situation, ensuring that your fiber optic data transfer operates smoothly as intended.

Technical Data

1xN PLC Splitter Specification
Operating Wavelength(nm) 1260~1650
Fiber Type G657A1 or as customers' order
Port Configuration 1x2 1x4 1x8 1x16 1x32 1x64 1x128
Insertion Loss (dB) 3.8/4.0 7.1/7.3 10.2/10.5 13.5/13.7 16.5/16.9 20.5/21.0 23.8/24.2
Loss Uniformity (dB) 0.4 0.6 0.8 1.2 1.5 2.0 2.5
Polarization Dependent Loss(dB) 0.2 0.2 0.2 0.25 0.3 0.35 0.4
Wavelength Dependent Loss(dB) 0.3 0.3 0.3 0.5 0.5 0.5 0.5
Temperature Dependent Loss (-40~85 ) (dB) 0.4 0.4 0.4 0.5 0.5 0.5 0.5
Return Loss (dB) 55/50
Operating Temperature -40~+85
Directivity (dB) ≥ 55
Storage Temperature -40~+85

Info & Guides


· Wide operating wavelength range:from 1260nm to 1650nm
· Wide Operating Temperature: from -40ºC to 85ºC
· Good channel-to-channel uniformity
· High reliability and small size
· Adopt high strength stainless steel, pass salt spray test
· Adopt 100% new raw material, ROHS compliance
· Low Insertion loss&Low PDL Compact Design



· FTTx
· Cable television (CATV)
· Local area networks (LAN)
· Test equipment
· Passive optical networks(PON)


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FIBEYE’s supply chain has been in the fiber optic communication field for more than 18 years, starting from the copper cable era in 1992. Today, FIBEYE mainly has 3 production centers, located in Ningbo, Anhui and Northeast China.

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