How to Choose a Suitable Fiber Optic Jumper according to the Optical Module?

fiber optic jumper

When using an optical module, we must consider its wiring problem. How to choose a suitable fiber jumper according to the optical module?

1. Transmission distance and data rate
Optical modules have a variety of different transmission rates and transmission distances. When we choose optical fibers for optical modules, we must choose matching optical fiber jumpers. The multi-source agreement (MSA) specifies the working wavelength, transmission distance and data rate of various optical modules in detail. It also lists the suitable fiber types, which also has a certain reference effect on the selection of fiber jumpers. The following table is the specific details of the optical module.

Optical module typeOperating wavelengthFiber typeData rateTransmission distance
LR1310nmsingle mode10G10Km
ER1550nmsingle mode10G40Km
ZR1550nmsingle mode40G80Km

2. Interface
When choosing a fiber optic jumper, the interface is an essential consideration. Usually, the interface of the optical module usually has 2 ports (one for receiving optical signals and one for transmitting optical signals), that is, duplex SC or duplex LC, therefore, requires the use of duplex SC/LC fiber. However, the newly launched optical modules in recent years have only one port (which can receive optical signals and transmit optical signals), so simplex optical fibers need to be used. Different connectors can be inserted into different devices. If the ports at both ends of the device are the same, we can use MPO-MPO/LC-LC/SC-SC fiber optic patch cords. If you want to connect devices with different port types, you can use LC-SC/LC/ST/LC-FC hybrid fiber patch cords.

fiber jumper interface

Interface TypeApplication
56.4mm MPO/MTP interfacemulti-fiber transceiver, 40G QSFP+/100G QSFP+ optical module
2.5mm SC interfacedata communication, electronic communication, GPON, EPON, X2, XENPAK optical module
2.5mm ST interfacedata communication, FTTH, military, campus, corporate network
2.5mm FC interfacedata communication, electronic communication, measurement equipment, single-mode laser
1.25mm LC interfacehigh-density wiring, SFP SFP+ optical module, XFP optical module

3. Optical fiber jumpers commonly used in optical modules

Fiber jumperApplicable optical module
24-core MPO/F-MPO/, F50/125 multimode fiber optic jumperCFP2-100G-SR10,CXP-100G-SR1
12-core MPO/F-MPO/F, 50/125 multimode 10 Gigabit fiber optic jumperQSFP-100G-SR4,QSFP-40G-SR4,QSFP-40G-eSR4,QSFP-40G-CSR4
12-core MPO/F-MPO/F, 9/125 single-mode fiber optic jumperQSFP-100G-PSM4,QSFP-40G-PLR4L,QSFP-40G-IR4,QSFP-40G-LR4
Duplex LC-LC, 9/125 single-mode fiber optic jumperSFP-XG-LH-SM1550,SFP-XG-LX-SM1310
Duplex LC-LC, 50/125 multimode 10 Gigabit fiber optic jumperQSFP-40G-BIDI-SR-MM850,QSFP-40G-UNIV,SFP-XG-SX-MM850,SFP-XG-LX220-MM1310

fiber jumper


After reading these three factors that need to be considered before choosing, let’s give an example. The transmission rate of the optical module QSFP-100G-SR4-MM850 is 100Gbps, and it is usually used with multimode fiber (MMF). The center wavelength is 850nm. The device type is MPO, which can use 12-core MPO/F-MPO/F fiber optic jumper, the fiber diameter is 50/125um, and the transmission distance is 70m.

Echo Huang

Echo Huang is an expert wordsmith and marketing professional at Bonelinks with more than 8 years of experience in high technology businesses – fiber optics, IoT, and telecommunication. She is very glad to share industry knowledge and communicate with others.

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