Connor Craven, Steve Alexander, Bill Gartner discussed on 7 Layers

7 Layers


To the exploding amount of smart devices around us. I'm your host. Connor craven associate editor 's central before we dive in. I'd like to remind you to subscribe to seven layer so you never miss an episode example. Next week we are going to have our first ever expert panel. The panelists are steve alexander chief technology officer in senior vice president at sienna. Bill gartner senior vice president and general manager of optical systems at the optical group at cisco in robert shore senior vice president of marketing. At infant era. I am so excited for you to hear this panel. It went very well in my opinion. And as always if you want to learn more about the current state of technology you can head on over to sdn central dot com today. I'm going to cover optical networks as you may have guessed from the titles in companies of some of the panelists for next week these networks use glass fibers to send data as light over various distances. A most famously. Over very long distances such as across oceans the way optical networks transmit information is by modulating the light when it is sent in variations in the measurements of the light. When it is received depending on the variations the light can be interpreted as various combinations of ones and zeros. I'll get into that more. When i talked about coherent optics. Multiple streams of data can be sent over an optical fiber by using different wavelengths literally the colors of light in this episode we will cover what optical networking is optical use cases and the benefits and challenges the infrastructure of optical networks consist of cables transceivers multiplex irs amplifiers in certain cases repeaters. Optical cables are un's of fiber which is what the light travels through is similar to how copper wires work with electricity but made of course rounded by cladding the core is the innermost part of the fiber. It is typically made of class in his the medium that light passes through cladding is wrapped around the glass and keeps the light from escaping. It can be made of a variety of materials but usually is plastic or glass that is a different density from the core. Why is sent into the court angle. Forty two degrees or less. So that when the light hits the cladding after entering the glass. It is reflected in remains in the core. This is called total internal reflection. The light waves basically are bouncing back and forth hitting reflecting off the cladding as they transverse the fiber. Now the words the light waves are not traveling in a straight path down. The fiber transceivers are devices that can do both transmission and reception of signals. They receive electrical signals and turn them into the light that has sent over the fiber at the other end of the connection. Another transceiver detects light in terms of back until electrical signals for other devices to use and sends it over the last mile of transmission. Transceivers can be tuned to achieve different per wavelength line.

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