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HomeFreeWhat are Fiber spectrum bands?

What are Fiber spectrum bands?

Last Updated: August 16, 2025
1 min read
107

Band Description

Wavelength Range (nm)

850 Multimode Window

800-910

O Original

1260-1360

E Extended

1360-1460

S Short

1460-1530

C Conventional (EDFA Window)

1530-1565

L Long (Extended EDFA)

1565-1625

U Ultra Long Haul

1625-1675

Sanjay Yadav

Optical Communications & Network Automation Expert | Author of 3 Books for Optical Engineers | Founder, MapYourTech

Optical networking engineer with nearly two decades of experience across DWDM, OTN, coherent optics, submarine systems, and cloud infrastructure. Founder of MapYourTech.

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