2024-03-11
When using optical modules, we definitely consider their wiring issues. How do we choose the right fiber optic patch cord based on the optical module? We have summarized this.
1. Transmission Distance and Data Rate
Optical modules come with various transmission rates and distances. When selecting fiber optic patch cords for optical modules, it's essential to choose cords that match their specifications. The Multi-Source Agreement (MSA) provides detailed specifications for different optical modules, including operating wavelengths, transmission distances, data rates, and recommended fiber types. This information serves as a reference for selecting fiber optic patch cords. Below is a table detailing the specifics of optical modules.
|
Optical Module Types |
Operating Wavelength |
Fiber Type |
Data Rate |
Transmission Distance |
|
SR |
850nm |
Multimode |
10G |
300m |
|
LR |
1310nm |
Single mode |
10G |
10Km |
|
ER |
1550nm |
Single mode |
10G |
40Km |
|
ZR |
1550nm |
Single mode |
40G |
80Km |
|
SR4 |
850nm |
Multimode |
40G |
100m |
|
SR10 |
850nm |
Multimode |
100G |
100m |
2. Interface Style
OM1 62.5/125 multimode fiber optic cable, dual-core LC/LC
When choosing fiber optic patch cords, the interface is an essential consideration. Typically, optical modules have two ports (one for receiving optical signals and one for transmitting optical signals), either duplex SC or duplex LC. Therefore, duplex SC/LC fiber optic patch cords are needed.
However, in recent years, newly introduced optical modules have only one port (capable of both receiving and transmitting optical signals), hence requiring simplex fiber optic cables. Different connectors can be inserted into different devices. If the ports at both ends of the equipment are the same, we can use MPO-MPO/LC-LC/SC-SC fiber optic patch cords. If connecting devices with different port types, LC-SC/LC/ST/LC-FC fiber optic patch cords can be used.
|
Interface Type |
Application |
|||
|
56.4mm MPO/MTP Interface |
Multifiber Transceivers, 40G QSFP+/100G QSFP+ Optical Modules |
|||
|
2.5mm SC Interface |
Data communication, electronic communication, GPON, EPON, X2, XENPAK optical modules |
|||
|
2.5mm ST Interface |
Data communication, FTTH, military, campus, corporate networks |
|||
|
2.5mm FC Interface |
Data communication, electronic communication, measurement equipment, single-mode lasers |
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|
1.25mm LC Interface |
High-density cabling, SFP SFP+ optical modules, XFP optical modules |
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3. Common Fiber Optic Patch Cords for Optical Modules
|
Fiber Optic Patch Cord Name |
Applicable Optical Modules |
|||
|
24 core MPO/F-MPO/，F50/125 Multimode Fiber Optic Patch Cord |
CFP2-100G-SR10，CXP-100G-SR1 |
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|
12 core MPO/F-MPO/F，50/125 Multimode 10 Gigabit Fiber Optic Patch Cord |
QSFP-100G-SR4，QSFP-40G-SR4，QSFP-40G-eSR4，QSFP-40G-CSR4 |
|||
|
12 core MPO/F-MPO/F，9/125 Single mode Fiber Optic Patch Cord |
QSFP-100G-PSM4，QSFP-40G-PLR4L，QSFP-40G-IR4，QSFP-40G-LR4 |
|||
|
Dual-core LC-LC，9/125 Single mode Fiber Optic Patch Cord |
SFP-XG-LH-SM1550，SFP-XG-LX-SM1310 |
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|
Dual-core LC-LC，50/125 Multimode 10 Gigabit Fiber Optic Patch Cord |
QSFP-40G-BIDI-SR-MM850，QSFP-40G-UNIV，SFP-XG-SX-MM850，SFP-XG-LX220-MM1310 |
|||
MPO/LC fan-out, 0.9mm diameter, 12-core, multimode OM3 50/125μm
After considering these three factors, let's take an example. The transmission rate of the optical module QSFP-100G-SR4-MM850 is 100Gbps, typically used with multimode fiber (MMF), with a central wavelength of 850nm, and a connector type of MPO. In this case, a 12-core MPO/F-MPO/F fiber optic patch cord can be used, with a fiber diameter of 50/125um and a transmission distance of 70m.
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