The Difference Between Multimode Fiber: OM1, OM2, OM3, OM4 And OM5

- May 25, 2020-

The Difference Between Multimode Fiber: OM1, OM2, OM3, OM4 And OM5

 

Since OM1 and OM2 optical fibers cannot support data transmission speeds of 25 Gbps and 40 Gbps, OM3 and OM4 are the main options for multimode optical fibers that support 25G, 40G, and 100G Ethernet.

 

OM1

Color is orange

Core size-62.5um

Data rate-1GB @ 850nm

Distance-up to 300 meters

Applications-Short-range networks, local area networks (LAN) and private networks

OM1

 

OM2

Color is orange

Core size-50um

Data rate-1GB @ 850nm

Distance-up to 600 meters

Usually used for shorter distances • 2 times the distance capacity of OM1

Applications-Short-range networks, local area networks (LAN) and private networks

OM2

 

OM3 laser optimized multimode

Color-Aqua

Core size-50um

Date rate-10GB @ 850nm

Distance-up to 300 meters

Use fewer light modes to increase speed

Can run 40GB or 100GB to 100 meters with MPO connector

Application-Larger private network

OM3

 

OM4

Color-Aqua

Core size-50um

Data rate-10GB @ 850nm

Distance-up to 550 meters

100GB to 150m can be run using MPO connector

Applications-High-speed Internet-Data centers, financial centers and corporate parks

OM4

 

OM5

According to ISO / IEC 11801, OM5 fiber specifies a wider wavelength range between 850nm and 953nm. It was created to support Short Wavelength Division Multiplexing (SWDM), which is one of many new technologies developed for the transmission of 40Gb / s and 100Gb / s. In June 2016, the new broadband multimode fiber standard ANSI / TIA-492AAAE was approved for publication. In October 2016, OM5 fiber was announced as the official name of the wiring that includes WBMMF (Broadband Multimode Fiber) in ISO / IEC 11801. Since then, OM5 may become a potential new option for data centers that require greater link distance. Higher speed.

OM5


OM4 and OM5: What is the difference?

Since OM1 and OM2 optical fibers cannot support data transmission speeds of 25 Gbps and 40 Gbps, OM3 and OM4 are the main options for multimode optical fibers that support 25G, 40G, and 100G Ethernet. However, as bandwidth requirements increase, the cost of fiber optic cables supporting the next-generation Ethernet speed migration is also increasing. In this context, OM5 fiber was born to expand the advantages of multimode fiber in the data center.

The key difference between them is that at 4700 MHz-km, the EMB of the OM4 fiber is only specified at 850 nm, while the OM5 EMB value is specified at 850 nm and 953 nm. The value at 850 nm is greater than OM4. Therefore, OM5 fiber provides users with longer distances and more fiber options. In addition, TIA has designated lime green as the official cable jacket color for OM5, while OM4 is the water jacket. OM4 is designed for 10Gb / s, 40Gb / s and 100Gb / s transmission, but OM5 is designed for 40Gb / s and 100Gb / s transmission, which can reduce the number of optical fibers for high-speed transmission.

In addition, the OM5 cable can support four SWDM channels, each channel carrying 25G data, using a pair of multimode fiber to provide 100G Ethernet. In addition, it is fully compatible with OM3 and OM4 fibers. OM5 can be used for installation in a variety of enterprise environments worldwide, from campus to building to data center. In short, OM5 fiber is better than OM4 in transmission distance, speed and cost.

 

OPTICO COMMUNICATION (www.fiberopticom.com) focuses on the development of fiber optic network communication product lines and provides a comprehensive solution to the fiber connectivity system components. We supply fiber optic components, such as fiber patch cord, PLC splitter, SFP transceiver, MTP/MPO, CWDM/DWDM, FTTH solution, Data center wiring solution, etc. All the products adopt strict quality standards in the production and inspection, ensuring excellent operation performance and good product stability, and safely and reliably ensuring the long-term use of products.

For more details, pls visit OPTICO website: www.fiberopticom.com.