How Compatible are 62.5µm & 50µm Multimode Fiber Optic Cables when you mix them?

  • Last modified: December 28, 2023

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How Compatible are 62.5µm & 50µm Multimode Fiber Optic Cables when you mix them

Multimode fiber optic cables usually come with two different diameters. One is 62.5/125µm and the other one is 50/125µm. The numbers 60 and 50 µm signify the diameters of the glass or the plastic core inside the fiber optic cable. 125 µm is the core to cladding diameter. It keeps the light inside the cable. The bandwidth of the cable depends on the core size.

Categories of Fiber Optic Cables

Multimode fiber optic cables usually come with two different diameters. One is 62.5/125µm and the other one is 50/125µm. The numbers 60 and 50 µm signify the diameters of the glass or the plastic core inside the fiber optic cable. 125 µm is the core to cladding diameter. It keeps the light inside the cable. The bandwidth of the cable depends on the core size.

Cross Section of Multimode Fiber Optic Cables

Multimode fiber optic cables usually come with two different diameters. One is 62.5/125µm and the other one is 50/125µm. The numbers 60 and 50 µm signify the diameters of the glass or the plastic core inside the fiber optic cable. 125 µm is the core to cladding diameter. It keeps the light inside the cable. The bandwidth of the cable depends on the core size.

Why Do Two Fiber Cables need to be Mixed?

The basic idea behind this fusion is to achieve more speed. Normally, LED and 62.5 µm fiber cables have compatibility with 10/100Mbps Ethernet. When you are upgrading for high-rates, you’ll need vertical-cavity surface-emitting laser (VCSEL). VCSELs can switch rapidly, thus making them perfect for higher data transfer rates.

If you are planning for longer transmissions, you’ll need to go with 50 µm fiber cables. Therefore, most of the buildings are now using laser-optimized 50/125 µm cables for 1/10/100 Gigabit Ethernet. But our existing cabling system still prefers the 62.5/125 µm fiber for many applications, resulting in a need to mix two different cables. 

Barriers in Mixing Fiber Optic Cables

Multimode fiber optic cables usually come with two different diameters. One is 62.5/125µm and the other one is 50/125µm. The numbers 60 and 50 µm signify the diameters of the glass or the plastic core inside the fiber optic cable. 125 µm is the core to cladding diameter. It keeps the light inside the cable. The bandwidth of the cable depends on the core size.

Multimode fiber optic cables usually come with two different diameters. One is 62.5/125µm and the other one is 50/125µm. The numbers 60 and 50 µm signify the diameters of the glass or the plastic core inside the fiber optic cable. 125 µm is the core to cladding diameter. It keeps the light inside the cable. The bandwidth of the cable depends on the core size.

Multimode fiber optic cables usually come with two different diameters. One is 62.5/125µm and the other one is 50/125µm. The numbers 60 and 50 µm signify the diameters of the glass or the plastic core inside the fiber optic cable. 125 µm is the core to cladding diameter. It keeps the light inside the cable. The bandwidth of the cable depends on the core size.

Specification Cat5e Cat6 Cat6a
Cable Jacket Plenum, Riser & PVC Plenum, Riser & PVC Plenum & Riser
Wire Gauge 24-AWG 23-AWG 23-AWG Highly Twisted
Frequencies 350 MHZ 550 MHZ 750 MHZ
Installation Temp 0°C to 60°C 0°C to 60°C 0°C to 60°C
Pairs 4 Twisted Pairs 4 Twisted Pairs 4 Twisted Pairs
Package Easy Pull Box Easy Pull Box Wood Spool
Colors Black, Blue, White, Red, Green, Yellow Black, Blue, White, Red, Green, Yellow Black, Blue, White, Red, Green, Yellow
Standard Compliance ETL, FCC, CE, CSA, ISO/IES, RoHS FCC, CE, CSA, ISO/IES, RoHS ETL, FCC, CE, CSA, ISO/IES, RoHS
Jasper Tanner

Jasper Tanner, our fiber optic guru, simplifies the intricacies of high-speed connectivity. Count on his blogs to navigate the world of fiber optics effortlessly.


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