A communication system in which we use light signals to send information is optical networking. We can use it to send information between the points. They could be anything. For example, we can send information between two computers in an office. These two computers in an office are points. We can also send information between large urban centres in the global communication system. Here, these centres are the points. We can also send this information in several forms. First, we can make use of point-to-point networks. By using these point-to-point networks, we can create permanent pair of nodes for communication. Secondly, we can make use of point to multi-point networks. By using it, we can send the same information simultaneously to various points. Fibre-optic cables are the building blocks of optical networking.
How to Make Optical Networking Safe and Productive?
Fibre-optic cables are the building blocks of this form of networking. These cables carry information from node to node in this system. After carrying the information from node to node, it will reach the destination. Here, we will discuss the best ways about the safety and productivity of optical networking.
Use of Optical Signals:
There is a series of pulses in the optical signals. To create this series of pulses, we have to either turn on or off the laser beam. The speed of the pulses depends upon the rate of switching on and off the laser beam. These pulses will spread in a specific length. We call this length the dispersion. This dispersion depends upon the type of optical fibre. It also depends upon the nature of the optical fibre. Due to dispersion, we will have to face lots of problems distinguishing between the adjacent pulses. For the reduction of the dispersion effects, we can make use of the latest technology. For this reason, we can combine different types of fibres. For the faster transmission speeds, we have to compensate for the dispersion.
The fibre signals provide help for the transmission of light. To define the transmission capacity of fibre, we have to multiply the optical channels with the data rate. In the laboratory under controlled conditions, we can transmit 10 terabits/second through 100 km of fibre. Anyhow, when we use it for commercial use, it will not exceed from few hundred gigabits/second. If we want to achieve these high data rates, we have to use sophisticated channels. We have to pay enough attention to the designing of the fibres. Based on its design, we can easily limit the dispersion rate. For this reason, we can use semiconductor lasers.
Use of Amplifiers:
According to a dissertation writing firm, if we are using the clearest optical fibers, we can easily transmit the data over 100 kilometres. To transmit the data over 100 kilometres, we don't require amplifiers. Anyhow, if we have to send the signals at a longer distance, we have to use optical amplifiers. By using optical amplifiers, we can easily multiply its strength. To make it, we have to dope the fibres with the atoms of erbium. These are rare earth elements. These rare earth elements can easily absorb the energy from the external pump laser. After that, it will release the energy for the amplification of the weak optical signals. If we use them carefully, we can transmit the signals at large distances.
Use of Optical Switches:
In optical networking, we have to face a major challenge. This challenge is relevant to the switching of these signals. When they reach the required point, we have to separate it from other channels. For this reason, we have to use an optical filter. This optical filter will easily separate it from the rest of the wavelength. If there is an unoccupied wavelength, it will add a new signal to it. We have to operate the optical switches at a single wavelength. On the other hand, if we want to transmit all the wavelengths, we have to use fibre. Instead of using a fixed filter, we can use an optical switch. It will divert the desired wavelength of light.
As a result, this optical switch will divert the wavelength of light. We can also use optical switches to separate the lights into separate beams. Here, we can also make use of the moving mirror. It will direct one or more wavelengths in opposite directions. In other words, we can use these mirrors to tilt between two positions for optical networking. We call them all-optical switches. Its reason is that we are operating these switches on the light signals. There is another class of switches. These switches can convert these signals into electronic form. By using this class of signals, we can switch the signals electronically. As a result, we have to feed this signal into an optical transmitter. They will provide enough help in the generation of an optical signal.
Due to the advancement in technology, we have to use optical networking to the conversion of the signals into different wavelengths. To complete this process, we have to use Opto-electro-optical wavelength converters. By using it, we can easily convert the input optical signals. For this reason, we have to drive the transmitter. We have seen the demonstrations of these transmitters in the laboratory. Anyhow, these transmitters are not available for practical systems. We also require different laser sources for different wavelengths. We have also seen various demonstrations of these lasers in the laboratory. Anyhow, we are using some types in commercial production.
Conclusion:
We can use optical networking for the transfer of information. If we use optical networking for the transfer of information, we have to use light signals. Here, we can't use electronic signals. To send information between points, we can make use of optical fibers. If we want to make it safe and productive, we have to focus on three things. First, we have to create an arrangement of the pulse. We can easily create this series by using the laser beam. Secondly, we have to create amplifiers by using erbium elements. At last, we have to focus on optical switches. By using optical switches, we can easily separate the signals from the rest of the channels.
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