Graphical illustration of a fiber optic communication system

“It can be seen from the graphical illustration that the optical fiber communication system mainly consists of three main parts: an optical transmitter (optical transmission equipment), a transmission optical fiber (optical cable), and an optical receiver (light receiving equipment).”

Composition of optical fiber communication systems

  The rapid development of optical fiber communication technology in recent years and the wide application range are rare in the history of communications, and are also important symbols of the world’s new technology revolution and the major transmission tools for various information in the future information society. A practical optical fiber communication system requires circuits, equipment, and auxiliary facilities configured to perform various functions to form a communication network entity before it can be put into operation, for example, interface circuits, management systems, and power supply facilities.

Optical fiber communication system work process

  The optical fiber communication system must determine the specific system structure according to the user’s needs, the types of services to be transmitted, and the transmission system and technology level used. Therefore, the specific structure of the optical fiber communication system takes various forms, but its basic structure is determined. The working process diagram of the optical fiber communication system.

Optical fiber communication system work process diagram

  It can be seen from the compositional structure of the optical fiber communication system that the optical fiber communication system mainly consists of three main parts: an optical transmitter (optical transmission equipment), a transmission optical fiber (optical cable), and an optical receiver (light receiving equipment). In this system, the electro-optical and optical-electrical conversion methods are usually Intensity Modulation with Direct Detection (IM/DD). The input baseband electrical signal may be an analog signal, such as a video image signal, an audio language signal, or the like, or a digital signal such as a computer data, a PCM (Pulse Code Modulation) coded signal, or the like. The processing of these electrical signals is done by the sending electrical terminal. The optical transmission device converts the input electrical signal into a current signal suitable for driving the light source device, and directly performs intensity modulation (IM) on the light source device to complete the electrical-optical conversion electrical function. The light source output electro-optical signal is directly coupled to the transmission fiber and is transmitted to the receiving end after being relayed over a certain distance to the optical fiber. At the receiving end, the photodetector of the light-receiving device performs direct detection (DD) on the input optical signal, converts the optical signal whose intensity varies with the baseband signal into a corresponding current signal, and then undergoes amplification, regeneration recovery, and the like. The signal processing process is used to compensate for signal damage during line transmission, such as loss, waveform distortion, etc. Finally, the electrical signal that is received by the receiving terminal and the original input baseband signal completes the entire information transmission process.

Typical Applications of Fiber Optic Communication Systems

Broadband ISDN Fiber Access System Topology

  The application of optical fiber is extensive. It can be used as a transmission line, broadband integrated services digital network (ISDN) and optical fiber subscriber line in public telecommunication networks. In addition, it can also be used as a communication line in special environments, such as power plants, chemical plants, and oil depots. Electricity, roads, railways, mines and other occasions. The following figure shows a typical application example: A schematic diagram of the topology of a broadband integrated service fiber access system.

Ask for more optical fiber communication systems Guide!

Latest Blog

About Us

Why FTTH can save telecom cost

FTTH: saving money

【Our Goal】

Benefits our customers via Fiber Network (FTTH).

【FOT Telecom】

Your reliable fiber network equipment and service provider: Read More

Contact us

Email: sales@fiberoptictel.com fiberoptictelecom@gmail.com SKYPE: fanny-lee2007 SKYPE: fiberoptictelecom Tel: +86-20-22098370
Add.: Jitang Industrial Zone, No.8 Nanyun Five road, Huangpu, Guangzhou. 510663
ContactUs.com