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Graphical illustration of a fiber optic communication system (iii)

Graphical illustration of a fiber optic communication system (iii)

“Via this concept and figure, it is easy to describe the functions and procedures as well as the requirements for specifying network requirements.” Fiber access network   An optical access network (OAN) is an access network that uses optical fibers as a transmission medium and uses optical

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Graphical illustration of a fiber optic communication system (ii)

Graphical illustration of a fiber optic communication system (ii)

“It can be seen from the following figure that the optical fiber communication system is mainly composed of three parts: an optical transmitter, an optical fiber and an optical receiver…” Composition of optical fiber communication systems   The optical fiber communication system, like all communication systems, consists

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Two major uses of photodetectors in optical communication systems

Two major uses of photodetectors in optical communication systems

Photoelectric detection and optical receiver   At the transmitting end of the optical fiber communication system, the light source is modulated with a low-frequency baseband electrical signal, and then the modulated light signal is transmitted via the optical fiber. Due to factors such as attenuation and dispersion

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FOT Lesson: Structure of EDFA

FOT Lesson: Structure of EDFA

Structure of EDFA   The structure of the erbium-doped fiber amplifier is shown in the figure below. Its key components are erbium-doped fiber, high-power pump source, wavelength division multiplexer (combiner) that is multiplexed as signal light and pump light, and light feedback and Reduce system noise, optical

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Graphical illustration of a fiber optic communication system

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

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VoIP services and the Access Network

VoIP services and the Access Network

Access network support the VoIP services   VoIP is the technology that the analog-to-speech signal is sampled, digitized, compressed and encapsulated into data packets, and then transmitted and processed in an IP network in the form of packet pairs.   The voice service is a basic telecommunication

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FOT Lesson: EDFA & Light Amplification Process

FOT Lesson: EDFA & Light Amplification Process

EDFA: Erbium-doped fiber amplifier   It is necessary to increase the capacity of the communication line and minimize its cost. The wavelength division multiplexing (WDM) system is the preferred solution. The maximum rate of the WDM commercial system has reached 40*10 Gbit/s, and the WDM technology develops

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Learn about optical repeater transmission system in minutes

Learn about optical repeater transmission system in minutes

“The emergence of optical fiber amplifiers is an important milestone in the history of optical fiber communications.” Optical signal; Photodetector; Low noise preamplifier; High gain main amplifier; Equalization circuit; Decision regeneration circuit; Optical modulator; light source; AGC circuit; Clock extraction circuit; Automatic power control;   The transmission

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How to choose a right transmitter by light source parameters?

How to choose a right transmitter by light source parameters?

LED: Light Emitting Diode; LD: Laser Diode; AM: Amplitude Modulation; FM: Frequency Modulation; PM: Phase Modulation; ASK: Amplitude Shift Keying; FSK: Frequency Shift Keying; PSK: Phase Shift Keying   The complete optical fiber communication system should consist of three main parts: Light emission, optical transmission and optical

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Learn to choose the right fiber in minutes

Learn to choose the right fiber in minutes

How to select a right optical fiber?   The basic requirement when selecting the optical fiber is that the optical power coupled into the optical fiber from the emitting light source should be large enough, and the distortion generated after the optical signal is transmitted through the

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