C + + wave band EDFA device with single-fiber bidirectional OSC

Abstract

The embodiment of the invention discloses a C + + wave band EDFA device with a single-fiber bidirectional OSC, and the device comprises a C + + wave band EDFA unit, the input and output of the C + + wave band EDFA unit are connected with the output of a first multiplexer / demultiplexer and the input of a DCM port, and the output of the DCM port is connected with the input of a second multiplexer / demultiplexer; a C + + wave band signal of 1524-1572 nm is output to the EDFA unit through the first wave combiner and splitter to be amplified, and then is output through the second wave combiner and splitter; a receiving end and a transmitting end of the first OSC unit are respectively connected with a first WDM and a second WDM, a common end and a reflecting end of the first WDM are respectively connected with a first wave combiner / splitter and a fourth WDM, and a 1510nm signal is relayed and amplified by the first OSC unit through an optical link and then output; the receiving and transmitting of the second OSC unit are respectively connected with the third WDM unit and the fourth WDM unit, the public end and the reflecting end of the second WDM are respectively connected with the second combiner / splitter and the third WDM, and the 1490nm signal is relayed and amplified by the second OSC unit through the optical link and then output. The EDFA with the OSC provided by the embodiment of the invention can amplify a C + + wave band signal.

Description

technical field [0001] The present application relates to the communication field, in particular to a C++ band Erbium-doped Fiber Amplifier (EDFA, Erbium-doped Fiber Amplifier) ​​device with a single-fiber bidirectional Optical Supervisory Channel (OSC, Optical Supervisory Channel). Background technique [0002] The rapid growth of data traffic has led to an increasingly urgent demand for fiber capacity growth. Fiber capacity depends on spectral efficiency and spectrum bandwidth. Spreading spectrum efficiency and using more complex modulation methods will gradually encounter bottlenecks. Expanding bands to increase spectrum bandwidth is the only way to improve at this stage. It is an effective means to increase the fiber capacity and increase the fiber capacity. The traditional C-band (ConventionalBand) application is from 1529 nanometers (nm) to 1561nm, from the frequency point of view, it is 196 terahertz (THz) to 192THz, the available spectral width is about 4THz, and it ...

AI Technical Summary

Problems solved by technology

With the development of high-speed and large-capacity optical fiber communication systems, more and more information services are concentrated on nodes and lines, which puts forward higher and higher requirements for the reliability of the optical network where the lines are located. Therefore, the protection of the optical path layer and Restoration has a significant impact on the survivability of the entire network. When the fiber loss of the main route of the large-capacity expansion C++ band system increases, resulting in a decline in communication quality or blockage of the fiber, it will cause huge communication losses and bring great harm to various industries in the national economy. incalculable loss

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