Optical communication (OpTIcal CommunicaTIon) is a communication method that uses light waves as the carrier wave. There are two ways to increase the bandwidth of the optical path: one is to increase the single-channel transmission rate of the fiber; the other is to increase the number of wavelengths transmitted in a single fiber, that is, wavelength division multiplexing (WDM).
Optical communication is a technology that uses light to transmit information to the other party.
The basic structure of optical communication
Computers and mobile phones around us send information through electrical signals "0 and 1". Optical communication is composed of a "transmitter" that converts electrical signals into optical signals, a "receiver" that converts optical signals into electrical signals, and a loop "optical fiber" that transmits light.
Advantages of optical communication
1. Long transmission distance, economical and energy-saving
2. Transmit massive amounts of information at once
3. Fast communication speed
(1) Long transmission distance, economical and energy-saving
Assuming that 10Gb of information (10 billion signals) is to be transmitted within 1 second, if electrical communication is used, the signal must be adjusted every 100 meters. In contrast, if optical communication is used, it is necessary to adjust the interval to 100 kilometers or more. The fewer times the signal is adjusted, the fewer machines are used, so it has the effect of economical and energy-saving.
(2) Transmission of massive amounts of information at one time
A large number of users can receive the required information (movies or news, etc.) at the same time. In 1 second, electrical communication can only transmit up to 10Gb (10 billion 0 and 1 signals) of information. In contrast, optical communication can transmit up to 1Tb (1 trillion 0 and 1 signals) of information.
(3) Fast communication speed
Electric communication will cause errors due to electric noise, resulting in a decrease in communication speed. However, optical communication is not affected by noise, so signals can be transmitted quickly.
Optical communication is communication that uses light waves as carrier waves. There are two ways to increase the bandwidth of the optical path: one is to increase the single-channel transmission rate of the fiber; the other is to increase the number of wavelengths transmitted in a single fiber, that is, wavelength division multiplexing (WDM). In fact, optical communication equipment is only suitable for the last few The distance of kilometers is used.
optical communication parts