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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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FOT Lessons: Key technologies of optical networks

FOT Lessons: Key technologies of optical networks

  The main advantage of the future all-optical network is that the optical signal does not need to undergo optical-electrical and electro-optical conversion when passing through the optical switching unit. Therefore, it is not limited by the response speed of photoelectric devices such as detectors and modulators,

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Wavelength Division Multiplexing (WDM) optical fiber technology

Wavelength Division Multiplexing (WDM) optical fiber technology

Brief Introduction   WDM (Wavelength Division Multiplexing) is a unique technology in optical fiber transmission. It is a method of sending signals of different wavelengths together at the transmitting end into one optical fiber for transmission, and then separating the signals of each wavelength at the receiving

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10GEPON key technologies: Asymmetric–rate and Symmetric–rate PHY for PON

10GEPON key technologies: Asymmetric–rate and Symmetric–rate PHY for PON

“PRX power budget describes asymmetric–rate PHY for PON operating at 10 Gbit/s downstream and 1 Gbit/s upstream. PR power budget describes symmetric–rate PHY for PON operating at 10 Gbit/s downstream and 10 Gbit/s upstream.” Physical Medium Dependent Sublayer   10GEPON defines and expands the parameters related to

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Learn about 10GEPON technology in minutes

Learn about 10GEPON technology in minutes

Symmetric and Asymmetric 10GEPON Keywords of 10GEPON Technology PMA: Physical Medium Attachment; PHY: Physical Layer Device; PMD: Physical Medium Dependent; RS: the reconciliation sublayer; PCS: physical coding sublayer; GMII: Gigabit Media Independent Interface; XGMII: 10 Gigabit MII; MPCP:MultiPoint Control Protocol; OAM: Operations, Administrations, and Maintenance   The

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The EoC access technology is never out: Baseband EoC

The EoC access technology is never out: Baseband EoC

“The baseband is defined as a transmission signal that contains more than just a single frequency from 0 Hz to the highest frequency component.” What does the Baseband EoC look like?   The baseband EoC does not change the frame format of the original Ethernet signal, but

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