Optical communication is a communication technology that utilizes the properties of light to transmit information. Optical communication has the advantages of fast transmission speed, large bandwidth, and strong anti-interference ability, and thus has been widely used in the field of communication. Let's learn more about the development of optical communication.
What is optical communication?
In optical communication, the light source converts the information into optical signals, which are transmitted through optical fibers, and the receiving end then converts the optical signals into electrical signals for decoding. Optical communication is widely used in telecommunications, Internet, data centers, medical care, broadcasting and other fields. With the continuous progress of technology, the transmission rate and capacity of optical communication are constantly improving, bringing more convenience to people's life and work.
Advantages of Optical Communication
1.Huge communication capacity
Theoretically, an optical fiber can simultaneously transmit 10 billion voice paths, and currently transmits 500,000 voice paths at the same time the test has been successful, thousands or even hundreds of thousands of times higher than the traditional coaxial cable, microwave and so on.
2.Long relay distance
Optical fiber has a very low attenuation coefficient, with appropriate optical transmission, optical receiving equipment, optical amplifiers, forward error correction and other technologies, which can make its relay distance of thousands of kilometers or more, while the traditional cable can only be transmitted 1.5km, microwave 50km, can not be compared with it.
3.Strong adaptability
With no fear of external strong electromagnetic field interference, corrosion resistance and other advantages.
4.Good confidentiality performance
5.Small size and light weight
Disadvantages of Optical Communication
1.Fiber structure is fragile, poor mechanical strength, need to be protected
2.fiber cutting and connecting operations require high technical requirements
3.Tap, coupling operation is more cumbersome
Principle of Optical Communication
Optical communication uses the transmission characteristics of light to convert information into optical signals, which are transmitted through optical fibers and then converted into electrical signals for decoding. The main equipment of optical communication includes light source, optical fiber, optical receiver and other components. The light source can be a laser or light-emitting diode, etc. The switch of the light source and the intensity of the light are controlled by electrical signals to produce light pulse signals. These signals are transmitted through an optical fiber to reach the receiving end, where they are converted into electrical signals by the optical receiver.
Application Scenarios of Optical Communicationformation
Telecommunication field: Optical communication technology has become one of the important technologies in the field of telecommunication and is widely used in telephone, broadband, mobile communication and other fields.
Data center: Data centers need high-speed and large-capacity data transmission, optical communication technology can meet this demand and improve data transmission rate and capacity.
Medical field: Optical communication technology can be used for medical diagnosis and treatment, such as optical coherence tomography (OCT) technology can be used for diagnosis in ophthalmology, dermatology and other fields.
