Camplex fiber optic cable.
Fiber optics is a communications medium that sends optical signals down hair-thin strands of pure glass cores. The light “pipe” is surrounded by cladding that traps the light in the core. The key difference between multimode and single mode fiber optic cable is the size of the core.
According to Camplex, a fiber optic solutions provider based in Saugerties, New York, fiber types are identified by the diameters of the core and cladding. These are expressed in microns. Multimode fiber is available in two sizes — 62.5 or 50 microns — and four classifications: OM1 (62.5/125 µm), OM2, OM3, OM4 (50/125 µm).
The diameter of a single mode core fiber cable, however, is nine microns. Both fiber types have a cladding diameter of 125 µm or microns.
In multimode fiber, light travels through through the large core in many rays. These are called modes. Due to refraction, the rays are reflected from the cladding surface back into the core as they move through the fiber.
Single mode fiber, on the other hand, has a much smaller core which forces the light to travel in one ray or mode (a single mode). There is little light reflection so the signal will travel further.
The user’s application requirements determine which mode is used. Single mode is typically used by outside broadcast vehicles, ENG crews, sports, live events and long haul networks. Multimode is often used by MADI digital audio, security systems, data centers, CCTV and Ethernet protocols.
The benefits of single mode fiber is lower signal loss, high signal quality and high bandwidth, while multimode fiber is less immune to contamination, less expensive and lower cost
You might also like...
When purchasing Cat5e, Cat6 or Cat6a network cables, buyers may notice an AWG specification printed on the cable jacket. AWG is a standardized system for describing the diameter of the individual conductors that make up a cable. But…
Following numerous private conversations and panel discussions at the recent 2018 NAB Show, it’s become clear that broadcasters are being challenged like never before to hold the line on CapEx spending while delivering more content across their linear platforms. Because o…
John Watkinson puts on his snake-oil-proof clothing and looks at speaker cables. Finally, some clarity behind the myths and magic that surround technical aspects of speaker interconnections.
Broadcasters have a flurry of changing parameters and imperfections to avoid when making the transition to single-link 12Gb/s connectivity. This article will provide some guidance to the needed decisions and key performance factors.
As higher resolutions become the “norm” in television production and broadcasting, improvements in coaxial cables and associated connectors to enhance performance in the 12G operating range provides a more practical solution for 4K transport.