Last month, we mentioned centralized fiber local area networks (LANs) as a place where fiber optics are more cost effective than copper wiring. What exactly is a centralized fiber network and how is one designed and built?
CityNet Telecommunications Inc. has launched the first commercial deployment of a fiber optic network through a sewer system. The first-of-a-kind deployment was conducted in the city of Albuquerque, N.M.
Fiber optics is always expected to cost much more than copper cabling. Whatever you look at—cable, terminations, or networking electronics—fiber costs more. So isn’t it obvious that fiber networks are more expensive than copper? Maybe not! There is more to consider before deciding this.
Our local newspaper reported that the local phone company had completed installing fiber optic cables between their central offices in the Boston area. That didn’t surprise me, but what did was the description of the cables they were installing. Each cable had 864 fibers in it!
Up until a couple of years ago, one never thought about choosing the fiber in the fiber optic cable you bought. If you were buying cable for outside plant applications like telephone or CATV networks, you chose single-mode fiber.
It has the potential to be a classic cartoon: an electrician with a run of co-ax coming in on the left that needs to link to a run of fiber going out on the right. No amount of black tape will link the two. What is needed is a magic box.
Absorption: That portion of fiber optic attenuation resulting in conversion of optical power to heat.
Attenuation coefficient: Characteristic of the attenuation of an optical fiber per unit length, in dB/km.
Fiber optics technology is among the fastest-growing communications technologies in the world. It is increasingly being used for communications, signaling, and electrical control instead of older-technology hardwired systems.
Premises fiber optic cabling link testing requires precise referencing methods to obtain accurate and valid results. Loss testing for multimode fiber cabling is specified in ANSI/TIA/EIA-526-14A. This standard contains two test procedures: Method A and Method B.
In most high-technology fields today, the pace of change is mind boggling. If you buy a new PC, it's obsolete before you get it out of the door. New models are waiting in the stockroom to replace the one you bought, offering faster speeds, bigger hard drives, and features you never dreamed of.
If you look into the end of a fiber, the powerful laser signal transmitting through it will burn your eyeball. The effect is like a medical fiber optics gadget that burns warts off your finger or an endoscope used in laser surgery, right?
To those unfamiliar to fiber optics, the process of local area network (LAN) design may seem complicated and tricky. However, the evolution of fiber optic LANs and standards has significantly simplified this process. In fact, the design process is now straightforward.