Optical Communication Comparison Guide | Optical Transceiver Technology丨C-LIGHT

By C-LIGHT Marketing 丨 Feb 25, 2026

DR and LR are two optical reach classes for single-mode fiber transceivers. DR uses parallel single-mode lanes at 1310 nm for 500-meter links. LR uses LAN-WDM or a single 1310 nm wavelength for 10-kilometer links

FR vs LR

By C-LIGHT Marketing 丨 Feb 24, 2026

FR and LR are two optical reach classes for single-mode fiber transceivers. FR uses CWDM wavelengths at 1310 nm for 2-kilometer links. LR uses LAN-WDM or a single 1310 nm wavelength for 10-kilometer links.

SR vs FR

By C-LIGHT Marketing 丨 Feb 23, 2026

SR and FR are two optical reach classes for Ethernet transceivers. SR uses multimode fiber at 850 nm for 100-meter links. FR uses single-mode fiber at 1310 nm for 2-kilometer links.

SR vs LR

By C-LIGHT Marketing 丨 Feb 22, 2026

SR and LR are two optical reach classes for Ethernet transceivers. SR uses multimode fiber at 850 nm for 100-meter links. LR uses single-mode fiber at 1310 nm for 10-kilometer links.

DR vs ER

By C-LIGHT Marketing 丨 Feb 21, 2026

DR reaches 500 meters over parallel single-mode lanes with MPO connectors. ER reaches 30 to 40 kilometers over LAN-WDM or 1550 nm wavelengths with duplex LC.

ER vs LR

By C-LIGHT Marketing 丨 Feb 20, 2026

LR reaches 10 kilometers over LAN-WDM wavelengths on a duplex LC pair. ER reaches 30 to 40 kilometers with higher launch power, greater receiver sensitivity, and the option of 1550 nm amplification.

LR vs ZR

By C-LIGHT Marketing 丨 Feb 19, 2026

LR delivers 10 km over LAN-WDM wavelengths with direct-detect optics. ZR delivers 80 to 120 km over DWDM with coherent detection, DSP, and a tunable laser.

ER vs ZR

By C-LIGHT Marketing 丨 Feb 18, 2026

ER reaches 30 to 40 kilometers with direct-detect PAM4 and fixed-wavelength lasers. ZR reaches 80 to 120 kilometers with coherent detection, tunable lasers, and DWDM line systems.

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