Antara muka optik Ethernet

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Ethernet optical interfaces follow a naming pattern like 10GBASE-SR. Reading the suffix tells you the medium, reach and wavelength a transceiver is built for.

Reading the suffix

S — short reach on multi-mode fibre, 850 nm.
L — long reach on single-mode fibre, 1310 nm.
E / Z — extended/very long reach on single-mode, around 1550 nm.
R — 64b/66b line coding (10G and above).
A trailing number is the lane count — SR4 and LR4 use four lanes.

Common examples

Interface	Fibre	Wavelength
1000BASE-SX	MMF	850 nm
1000BASE-LX	SMF	1310 nm
10GBASE-SR	MMF	850 nm
10GBASE-LR	SMF	1310 nm
100GBASE-SR4	MMF (8 fibres)	850 nm ×4
100GBASE-LR4	SMF	1295–1310 nm (CWDM ×4)

In CodingBox

The module reports its supported interface and wavelength in memory; CodingBox decodes these fields on the Check transceiver screen so you can confirm a transceiver matches the link before deploying it.

Many of these interfaces (CWDM4, PSM4, FR/LR, ZR) started as industry MSAs rather than IEEE clauses — who defined what, and which pairs interoperate: Optical interface MSAs.

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