Remote pump amplifier and optical communication system
An amplifier and remote pumping technology, which is applied in the field of large-capacity and ultra-long-span optical communication systems and remote pumping amplifiers, can solve the problems of increasing the pumping power into the erbium fiber, high cost of remote pumping amplifiers, and low conversion efficiency. Reduce the cost of line laying, improve the pump conversion efficiency, and have good performance stability
Active Publication Date: 2020-08-04
GUANGXUN SCI & TECH WUHAN
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Problems solved by technology
Since the remote pump amplifier needs much longer erbium-doped fiber to amplify the L-band signal than the C-band signal, the C-band optical path structure of the conventional remote pump amplifier will encounter some problems when directly used in the L-band remote pump amplifier, such as the noise figure Large, low conversion efficiency
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[0052] The essence of the technical solutions of the embodiments of the present application will be explained in detail below in conjunction with the accompanying drawings.
[0053]figure 1 A schematic structural diagram of the C+L band large-capacity remote pump amplifier provided for the embodiment of the present application, such as figure 1 As shown, the C+L band large-capacity remote pump amplifier of the embodiment of the present application includes a remote gain unit 1, an optical cable 2 and a remote pump unit 3, wherein the remote gain unit 1 is separated from the remote pump unit 3, and the remote pump unit Placed at the output end of the optical cable 2, the remote gain unit 1 is placed in the transmission line of the optical cable 2 to achieve the purpose of passive transmission line.
[0054] Such as figure 1 As shown, the remote gain unit 1 specifically includes a first wavelength division multiplexer 11, a second wavelength division multiplexer 12, a third wav...
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Abstract
The embodiment of the invention discloses a remote pump amplifier and an optical communication system. The remote pump amplifier comprises: a remote gain unit used for receiving C+L wave band signal light, dividing the C+L wave band signal light into C wave band signal light and L wave band signal light, amplifying the C wave band signal light and the L wave band signal light respectively, and combining the amplified C wave band signal light and L wave band signal light, wherein the beam splitter is used for receiving the remote pump light, splitting the remote pump light, the C-band signal light and the L-band signal light which are subjected to wave combination, and outputting the C-band signal light and the L-band signal light which are subjected to wave combination; and a remote pumping unit which is used for providing remote pumping light so as to carry out Raman amplification on the C-band signal light and the L-band signal light, and providing pumping light for the remote gain unit at the same time, wherein the remote pumping unit and the remote gain unit are connected and separated through an optical cable, the remote pumping unit is arranged at the output end of the optical cable, and the remote gain unit is arranged in the transmission line of the optical cable.
Description
technical field [0001] The embodiment of the present application relates to optical fiber communication technology, in particular to a C+L band large-capacity remote pump amplifier, which is mainly applied to large-capacity and ultra-long-span optical communication systems. Background technique [0002] With the construction of UHV AC and DC power grids and strong smart grids, it is necessary to manage massive real-time data, which will put forward higher requirements for the bandwidth and network structure of power communication data networks. needs are becoming increasingly urgent. The traditional C-band (192.1-196.1THz) channel can no longer meet the bandwidth requirements, and the system's demand for L-band (186.9-190.9THz) signals is becoming more and more urgent. However, as the transmission capacity increases, the single-span transmission distance will gradually decrease. Therefore, it is of great practical significance to extend the transmission span of the system w...
Claims
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IPC IPC(8): H04B10/293H04B10/294H04B10/25
CPCH04B10/25H04B10/293H04B10/294
Inventor 孙淑娟徐健龙函吴剑军段明雄喻杰奎罗清王文忠黄丽艳成炬新项旻
Owner GUANGXUN SCI & TECH WUHAN