LC UPC Duplex SM Loop Back

OPTICO fiber optic circulator is mainly used for signal return in test system or network system.
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Product Details

LC UPC Duplex SM Loop Back

Through the return signal (mainly connecting the TX transmitting end to the receiving end of the RX in pairs), various potential abnormalities in the network link can be detected to achieve the test and evaluation of a single component or interface on the optical fiber network and the network. It is an ideal choice for testing the transmitted optical power and receiving sensitivity.


High temperature stability

Precise connector

Excellent mechanical capability

Compliant with ISO9001:2008,RoHS standard and Telcordia GR-326-CORD


Cabling system,ODF

Optical data transmission

Building network access


Some details of our product line

Front end

Middle end


One of our office near the factory


Types of our certificates


Various delivery way to keep your products safe

Delivery way

7-15 days are promised

LC UPC Duplex SM Loop Back is matched with 40G/100G optical module, used for fiber test, network repair and diagnosis of equipment failure. It is an ideal choice for testing the transmitted optical power and receiving sensitivity.

If interested,welcom to consult!

Fiber Optic Loop Back
Duplex MTRJ/Female, MTRJ/Male
Fiber Type9/125 SMF-28 or equivalent (Singlemode) OS1 50/125, 62.5/125 (Multimode) OM2&OM1 50/125,
10G (Multimode) OM3
Cable TypeSimplex, Duplex (Zipcord) Φ3.0mm, Φ2.0mm, Φ1.8mm Φ1.6mm PVC or LSZH Φ0.9mm, Φ0.6mm buffered fiber
Polishing MannerUPC, APC (8°& 6°)
Insertion Loss≤ 0.2dB (For Singlemode Master) ≤ 0.3dB (For Singlemode Standard);
≤ 0.5dB (For Multimode) Tested by JDS RM 3750
Return Loss (For Singlemode)UPC ≥ 50dB, APC ≥ 60dB (typ.65dB)
Durability±0.2dB typical change,1000 matings
Interchangeablity≤ 0.2dB
Operating Temperature -40°C to 85°C
Storage Temperature -40°C to 85°C
Geometry Requirement
(For Singlemode)
Ferrule Endface Radius 7mm ≤ R ≤ 12mm (For APC) 10mm ≤ R ≤ 25mm (For Standard) Apex Offset ≤ 30 μm (For Master) Apex Offset ≤ 50 μm (For Standard) Undercut -50nm ≤ U ≤ 50nm

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