15/04/2021

Fiber-Optic

So what happens when you need to decide which cable which connector which sfp do you need.

Here is a simple guide.

Cable Text

SM 9/125um LSZH 05/2018 1561M –> SM single mode

LSZH OM3 50/125 12/2021 3767M

MM 50/125um LSZH 05/2017 07490M –> MM-> multi-mode 50–> fiber diameter 125 cable diameter

LSZH –> low smoke zero halogen.

CISCO SFPs

GLC-LX-SM-RGD=Cisco 1000BASE-LX/LH SFP transceiver module for MMF and SMF, 1300-nm wavelength,
SFP-10G-LRCisco 10GBASE-LR SFP+ transceiver module for SMF, 1310-nm wavelength
GLC-T=1000BASE-T SFP transceiver module for copper networks,
SFP-10G-SRCisco 10GBASE-SR SFP+ transceiver module for MMF, 850-nm wavelength
GLC-FE-100LX=100BASE-LX10 SFP module for 100-Mb ports, SMF, 1310-nm wavelength,
GLC-LH-SM=Cisco 1000BASE-LX/LH SFP transceiver module for MMF and SMF, 1300-nm wavelength,
GLC-SX-MM=Cisco 1000BASE-SX SFP transceiver module for MMF, 850-nm wavelength,
GLC-LH-SMD=Cisco 1000BASE-LX/LH SFP transceiver module for MMF and SMF, 1300-nm wavelength
GLC-SX-MMD=Cisco 1000BASE-SX SFP transceiver module for MMF, 850-nm wavelength, extended operating temperature range.

Some concept

1000BASE-SX is an optical fiber Gigabit Ethernet standard for operation over multi-mode fiber for intra-building links in large office buildings, co-location facilities, and carrier-neutral Internet exchanges.

1000BASE-LX10 the new name of 1000BASE-LX/LH achieves longer distances up to 10 km over a pair of single-mode fiber due to higher quality optics. Before it was standardized, 1000BASE-LX10 was essentially already in widespread use by many vendors as a proprietary extension called either 1000BASE-LX/LH or 1000BASE-LH.

10GBASE-LR (long reach) is a port type for single-mode fiber and uses 1310 nm lasers.

10GBASE-SR (“short range”) is a port type for multi-mode fiber and uses 850 nm lasers.

 1000BASE-SX10GBASE-SR40GBASE-SR4100GBASE-SR10
OM1275 m33 mNot specifiedNot specified
OM2550 m82 mNot specifiedNot specified
OM3Not specified300 m100 m100 m
OM4Not specified400 m*150 m150 m
OM5Not specified400 m*150 m150 m
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Connectors

Different types of fiber optic cable connectors with various features

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