How fiber-optic media converter works?

Answer 1

There is a phenomenon in optics called "total internal reflection". Suppose a light ray is in some medium like glass and is about to exit into the air. If the ray is incident on the glass/air surface at a large enough angle then it gets totally reflected back into the glass. This phenomenon is used in fibre optics. Light is sent into the end of the fibre at an angle, so it travels a short distance and hits the side of the fibre glass tube. Because it is basically a glass/air surface it gets reflected back into the tube and ,of course, promptly hits the other side. But again it is reflected, rather then escaping into the air. So the light travels down the tube, bouncing off the sides as it goes. This is a really neat way of guiding the light along a path you want it to go. The "internal reflection" is highly efficient (meaning almost none escapes). The phenomenon only works when light is in a more dense medium (glass) then the surrounding medium (air). Another words it doesent work if the light is in air and about to enter the glass. In that case some light gets reflected but most of it will travel into the glass. You might try this effect in a swimming pool. Some night take a flashlight under water. First shine the light directly up. It will have no trouble escaping. Now slowly turn the flashlight so the beam hits the surface at an angle. There will be an angle ,called the critical angle, at which the beam is all of a sudden reflected from the surface, back into the pool. The water surface has to be nice and still for this to work but you should be able to see the beam go thru this change. And a person outside should see the bright spot on the surface almost dissapear, since the light is no longer escaping from the water.

Answer 2

Basically, the cable uses something called the critical angle to keep light inside it. This means the cable can be bent while still allowing light to travel through it. For more info go here:

http://en.wikipedia.org/wiki/Fibre_optic

NB please note that in some cases, the spelling FIBRE is used, this is the same thing.

Answer #2: To expand a bit on the first answer, light can travel down the optical fibre with low loss because each reflection on the wall of the fibre is "total internal reflection". The cable can be bent without significant loss but if you pinched the fibre, the change in shape would make the light hit the wall at the wrong angle and some would escape or be reflected. There is some loss in a fibre just as there is loss when light travels through a glass window. At the end of the cable, the signal can be converted back to an electrical signal with a sensor or it can enter optical circuitry.

Answer 3

information in form of electrical energy 1st converted in light energy using transducer, then it is feeded to optical fibre in which light undergoes total internal reflection due to which their is no loss of energy through core & info. travels wid speed of light.

Answer 4

Fiber optics get digital signals sent through them by LASERs. Between the origin and receiver there are usually repeaters to amplify the signal. They are received by a photo diode and amplified. Then they get converted in to their proper medium.

Answer 5

Pretty much the same way as wire only using photons of light instead of electrons. In most cases, that means binary data transmission. It's possible to use fiber optics for analog data, like analog telephony, but I'm unaware of any analog over fiber implementations in common use. The most notable benefits of light fiber data transmission over electrical are that it's faster, cooler, and less prone to interference.

Answer 6

You hear about fiber-optic cables whenever people talk about the telephone system, the cable TV system or the internet. Fiber-optic lines are strands of optically pure glass as thin as a human hair that carry digital information over long distances. They are also used in medical imaging and mechanical engineering inspection.

Learn More

• How FiOS Works
• Fiber-to-the-home Broadband
• How Home Theater Works

In this article, we will show you how these tiny strands of glass transmit light and the fascinating way that these strands are made.

FOR MORE OF THIS GO TO THIS WEBSITE: (see related link)

AT THIS WEBSITE YOU CAN WATCH VIDEOS

AND SEE PICTURES

Answer 7

Fibre optic technology is available to businesses in cities and states and across the world, making for internet access via fibre optic cables. These cables are a very powerful alternative to satellite and copper connections. Fibre optic cables work to transmit data with dozens or hundreds in the form of light, and fast travelling pulses of light. This layer of glass is called cladding, and this cladding is wrapped around the central fibre and causes light to constantly bounce off the walls of the string rather than blunder out at the edges, enabling the single to go further without attenuation.

Answer 8

Ethernet fiber Media Converter(fiber optical media converter) translates signals from a twisted-pair 10/100Base-Tx to 10/100Base-FX fiber optical cable.