The MTP loop contains the MTP back ring jumping line in the LOOPBACK, and puts both ends of the fiber into an MTP connector to achieve the light path in the same connector. The launch capacity and receiving sensitivity of the device, especially in 40/100G network communication, can locate various potential phenomena by returning signals to achieve effective testing and evaluation of a single coMTPnent or interface on the fiber network.
The MTP loop contains the MTP back ring jumping line in the LOOPBACK, and puts both ends of the fiber into an MTP connector to achieve the light path in the same connector. The launch capacity and receiving sensitivity of the device, especially in 40/100G network communication, can locate various potential phenomena by returning signals to achieve effective testing and evaluation of a single coMTPnent or interface on the fiber network.
There are many configurations of optical fiber circuit, which can accommodate 8 -core, 12 -core and 24 -core MTP connector and several fiber fiber configurations to adapt to the port in the test.8F MTP Fiber Loopback Module allows verification and testing of transceivers featuring MTP interface – 40GBASE-SR4/CSR4 QSFP+ devices. 12F MTP Fiber Loopback Module allows verification and testing of transceivers featuring MTP interface – 40GBASESR4 QSFP+ or 100GBASE-SR4 devices. 24F MTP Fiber Loopback Module allows verification and testing of transceivers featuring MTP interface – 100GBASESR10 CXP/CFP devices.
MTP Loopback modules provides a looped signal to test the transmit and receiving functions. It used widely within testing environment especially within parallel optics 40 and 100G networks. Loopbacks are built to link Transceivers (TX) and Receivers (RX) positions of MTP transceivers interfaces. MTP loopbacks can facilitate and speed up IL testing of optical networks segments by connecting them to MTP trunks/patch leads.
OMC offers a line of MTP fiber optic loopback assemblies for burn-in and testing of MTP network coMTPnents and systems. These MTP Loopback Assemblies are used to effectively test transmitter capability and receiver sensitivity of network equipment, particularly for telecom and datacom requirements. They are packaged in a compact housing for the highest density available for these applications.
Connectors’ Industrial Standard:
Connector
Reference
Housing Details
MTP Singlemode
EIA/TIA-604-5
SM APC: Green connectors+black boot (Standard Loss MTP)
SM APC: Yellow connectors+black boot (Super low loss MTP)
MTP Multimode
EIA/TIA-604-5
OM1&OM2 PC: Beige connectors+black boot (Standard Loss MTP)
OM3&OM4 PC: Aqua connectors+black boot (Standard&Super low loss MTP)
OM3&OM4 PC: Heather Violet connectors+black boot (Standard loss MTP)
Meets IEC Standard IEC-61754-7; IEC61755, Telcordia GR-1435-CORE, JIS C5982; TIA-604-5(FOCIS5) compliant Structured cabling per TIA-568-C
10G Fiber Channel Compliant
40G and 100G IEEE 802.3
Material’s details
Optical Specifications:
Item
Parameter
Fiber Type
Singlemode
Fiber Diameter
9/125um
Insertion loss
SM(G657A1)<1.0dB
Return loss
SM>50dB
Insert-pull Test
Above 600 times, IL<0.5dB
Operation Temperature (℃)
-40℃~ +80℃
Fiber Optic Loopback Testing :
Typically, a loopback test is a test in which a signal is sent from a communication device and looped back to the device as a way to determine whether it is functioning well or as a way to troubleshoot a defective node in the network. As for fiber optic loopback testing, optical loopbacks are used to verify the operational reliability of the device. Using fiber optic loopback cable or fiber optic loopback module for data transmission, the signal emitted by the device is looped from the transmit (Tx) end of an active component back to the receive (Rx) end of the same component.
Application:
When it comes to practical application, fiber optic loopback test is often employed for checking fiber optic transceivers. Since transceiver has two ports for receiving and transmitting the light signal, it is necessary to test the ports to see whether they are still under operation. Thus, fiber optic loopback test is the most convenient way for transceiver maintenance. The testing process is by routing the laser signal from the transmitter port back to the receiver port. Then the transmitted pattern is compared with the received pattern to make sure they are identical and have no error.
Collocated with 40G or 100G MTP/MTP interface transceivers
Loopback Module can be used for testing the transmission capability and receiver sensitivity of fiber optic network equipment.
Naming Rules&Order Confirmation Information:
Polarity (Channel Alignment)
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/MTP (UPC)
MMF
8/12 Fibers MTP/UPC Multimode Fiber
Loopback
40GBASE-SR4
MTP/MTP (UPC)
MMF
40GBASE-PLRL4
MTP/MTP (APC)
SMF
8/12 Fibers MTP/APC Single-mode Fiber Loopback
40GBASE-PLR4
MTP/MTP (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
Table 3: Loopback choices for 100G QSFP28 transceivers
Model
Interface type
Cable Type
Suited Loopback
100GBASE-SR4
MTP/MTP (UPC)
MMF
8/12 Fibers MTP/UPC Multimode Fiber
Loopback
100GBASE-PSM4
MTP/MTP (APC)
SMF
8/12 Fibers MTP/APC Single-mode Fiber Loopback
100GBASE-LR4
LC Duplex (PC)
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
MTP/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
MTP/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.
Zion Communication’s Hot MPO/MTP Fiber Optic Loopback
Zion Code
Zion Description
7236013
ZCM1111HXA1
8F MPO SM Fiber Optic Loopback Module /Cable
7236014
ZCM1121HXA1
12F MPO SM Fiber Optic Loopback Module/Cable
7236015
ZCM1141HXA1
24F MPO SM Fiber Optic Loopback Module /Cable
7236016
ZCM1116HXA1
8F MPO OM3 Fiber Optic Loopback Module /Cable
7236017
ZCM1126HXA1
12F MPO OM3 Fiber Optic Loopback Module /Cable
7236018
ZCM1146HXA1
24F MPO OM3 Fiber Optic Loopback Module /Cable
7236019
ZCM1117HXA1
8F MPO OM4 Fiber Optic Loopback Module /Cable
7236020
ZCM1127HXA1
12F MPO OM4 Fiber Optic Loopback Module /Cable
7236021
ZCM1147HXA1
24F MPO OM4 Fiber Optic Loopback Module /Cable
7236022
ZCM2111HXA1
8F MTP SM Fiber Optic Loopback Module /Cable
7236023
ZCM2121HXA1
12F MTP SM Fiber Optic Loopback Module /Cable
7236024
ZCM2141HXA1
24F MTP SM Fiber Optic Loopback Module /Cable
7236025
ZCM2116HXA1
8F MTP OM3 Fiber Optic Loopback Module /Cable
7236026
ZCM2126HXA1
12F MTP OM3 Fiber Optic Loopback Module /Cable
7236027
ZCM2146HXA1
24F MTP OM3 Fiber Optic Loopback Module /Cable
7236028
ZCM2117HXA1
8F MTP OM4 Fiber Optic Loopback Module /Cable
7236029
ZCM2127HXA1
12F MTP OM4 Fiber Optic Loopback Module /Cable
7236030
ZCM2147HXA1
24F MTP OM4 Fiber Optic Loopback Module /Cable
Packaging
This easily taken and well-protected fiber optical cable package has been labelled and marked by OMC as default. Standard carton size: 34*22*15 cm; 44*34*24 cm ; 54*39*34 cm . Which carton to be used depends on goods Qty. Packing can be customized.
OEM/ODM service for you
1. Cable color, printing word, material of cable jacket, connector’s color
2. OEM Label, Identify ring, cable’s label,box, shipping marks
3. Different quality Level.
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