Optical Fiber TOPICS

Differences among Multimode (OM1, OM2, OM3, OM4, OM5) and Single Mode (OS1, OS2) Fiber

FOWIKI.comComments Off on Differences among Multimode (OM1, OM2, OM3, OM4, OM5) and Single Mode (OS1, OS2) Fiber
Share

What are OM and OS type fiber optic cables?
In ANSI/TIA-568.3-D, the TIA adopted the nomenclature for fiber found in the international standard ISO/IEC 11801. The multimode fiber is prefixed with “OM” and the singlemode mode “OS”.

The new designation in ANSI/TIA-568.3-D should alleviate some of the confusion associated with application support distance issues. Each “OM” has a minimum Modal Bandwidth (MBW) requirement.

 

Bandwidth and attenuation comparison between different OM fiber optic cables

Multimode FiberOverfilled launch bandwidth (MHz.km)Laser LaunchAttenuations (dB/km)
Fiber TypeTIA Fiber StandardCore diameter (um)850 nm1300 nm850 nm850nm1300nm
OM1492-AAAA62.5200500Not specified3.51.5
OM2492-AAAB50500500Not specified3.51.5
OM3492-AAAC5015005002,0002.30.6
OM4492-AAAD5035005004,7002.30.6
OM5492-AAAE5035005004,7002.40.6

Attenuation refered to YOFC Multimode Fiber.

 

Maximum channel length comparison between different OM fiber optic cables

 Fiber Mode100BASE1000BASE10GBASE40GBASE100GBASE
850nm1300nm850nm1300nm
OM1up to 2000m275m550m33mup to 300mNot specifiedNot specified
OM2up to 2000m550m550m82mup to 300mNot specifiedNot specified
OM3up to 2000m550m550m300mup to 300m100m100m
OM4up to 2000m1000m550m550m400m*150m150m
OM5up to 2000mNot specifiedNot specifiedNot specified400m*150m150m

 

Attenuation comparison between different OS fiber optic cables

1310 nm1383nm1550 nm
OS1(EN50173-1:Ed.2: 2010)1.0 dB/km1.0 dB/km1.0 dB/km
OS2(EN50173-1:Ed.2: 2010)0.4 dB/km0.4 dB/km0.4 dB/km
OS1(ISO/IEC11801Ed.2.2:2010)1.0 dB/kmNot specified1.0 dB/km
OS2(ISO/IEC11801Ed.2.2: 2010)0.4 dB/km0.4 dB/km0.4 dB/km
OS2(ISO/IEC24702: 2006)0.4 dB/km0.4 dB/km0.4 dB/km
FOWIKI.com
http://fowiki.com

Related Articles

100G & 400G TOPICS

Introduction to 100G QSFP28 Single Lambda Transceivers

FOWIKI.com

Introduction 100G Single Lambda transceivers were defined by 100G Lambda MSA (100G Lambda Multi-Source Agreement). The MSA 100G MSA uses 100G PAM4 optical signaling and encoding it is able to use 100Gb/s per channel to transmit from 2m up to 40KM via single-mode fiber. Advantages The traditional 100Gb/s optical standards such as 100GBASE LR4, 100GBASE […]

100G & 400G Data Center TOPICS

De ontwikkeling van nieuwe IEEE 802.3 Ethernet-standaarden

FOWIKI.com

25GBASE-SR Door de ontwikkeling van 100GBASE-SR4 in 2015 werd het noodzakelijk een nieuwe standaard te ontwikkelen voor een lagere snelheid in de vorm van 25GBASE-SR. Deze is in 2016 formeel vastgelegd als IEEE 802.3by Ontwikkeld voor het aggregeren van vier 25G server-poorten naar één 100G switch-poort De transceiver gebruikt de bekende SFP+ form factor met […]

100G & 400G TOPICS

TARLUZ launched MPO-16 to MPO-16 400G Fiber Cable Assembly

FOWIKI.com

Tarluz offers 400G MPO/MTP 16-core MTP/MPO fiber assemblies to meet future network bandwidth requirements. The assemblies are offered in single row 16-core fiber and 32-core fiber (2 lines x 16 fibers) configurations to achieve the highest density physical contact for multi fiber connectors in the market. This high-density trunk cable can directly couple into 16x25G […]