Wavelength division multiplexing optical transmission system composed of single-fiber bidirectional optical modules

A single-fiber bidirectional, transmission system technology, applied in the field of optical communication, can solve the problem of incapable of maximizing the utilization of optical fiber resources, save optical fiber resources and wavelength division multiplexing devices, and make good use of optical fiber resources and wavelength resources. Effect

Pending Publication Date: 2019-04-05
宇捷光子科技(南京)有限公司
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Problems solved by technology

In this sense, the original dual-fiber bidirectional transceiver

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  • Wavelength division multiplexing optical transmission system composed of single-fiber bidirectional optical modules
  • Wavelength division multiplexing optical transmission system composed of single-fiber bidirectional optical modules
  • Wavelength division multiplexing optical transmission system composed of single-fiber bidirectional optical modules

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Embodiment Construction

[0023] In order to better understand and illustrate the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] figure 2 It is the topology diagram of the single-fiber bidirectional transmission wavelength division multiplexing system in the prior art (n is an even number), and only a group of wavelength division multiplexing / demultiplexing devices and a single-mode communication fiber are needed to complete the wavelength division multiplexing system For opposite transmission, but each channel must use two wavelengths for transmission, for example, one channel uses λ 1 and lambda 2 For sending and receiving, for example, N / 2 channels use λ n / 2-1 and lambda n / 2 Transmit and receive, so the number of channels is only N / 2.

[0025] image 3 The application topology diagram of the embodiment of the present invention in the coarse wavelength division multiplexing system is shown. The coarse w...

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Abstract

The invention discloses a wavelength division multiplexing optical transmission system composed of single-fiber bidirectional optical modules. The two sets of single-fiber bidirectional optical modules, a pair of wavelength division multiplexing/demultiplexing devices 201 and 202 and a communication optical fiber 300 connected with the first wavelength division multiplexing/demultiplexing device 201 and the second wavelength division multiplexing/demultiplexing device 202 are included; and the two sets of single-fiber bidirectional optical modules are n pairs of single-fiber bidirectional optical modules with the same wavelength, the two sets of single-fiber bidirectional optical modules 101n and 102n with the working wavelength being lambda1, lambda 2,..., lambda n are connected to the communication optical fiber 300 through the first wavelength division multiplexing/demultiplexing device 201 and the second wavelength division multiplexing/demultiplexing device 202, and n is larger than or equal to 2. By means of the system, the working characteristics of the single-fiber bidirectional optical modules transmitted at the same wavelength are mainly used, the aim of bidirectionally transmitting wavelength division multiplexed signals in the same long-distance optical fiber is achieved, one pair of wavelength division multiplexing/demultiplexing devices and one long-distance optical fiber are saved on the premise that the communication band is not reduced by 50%, and communication resources are maximized.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a wavelength division multiplexing optical transmission system composed of single-fiber bidirectional optical modules for transmission at the same wavelength. Background technique [0002] Before the commercialization of single-fiber bidirectional optical modules that transmit and receive at the same wavelength, most wavelength division multiplexing systems need to use two single-mode fibers to achieve bidirectional transmission, such as figure 1 shown. It is also possible to use a single single-mode fiber to complete bidirectional transmission of different wavelengths, at the cost of reducing the number of channels by 50%, such as figure 2 . In this sense, the original dual-fiber bidirectional transceiver optical module cannot maximize the use of optical fiber resources. Contents of the invention [0003] In order to solve the above problems, the present inve...

Claims

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Application Information

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IPC IPC(8): G02B6/293
CPCG02B6/293G02B6/2938
Inventor 郑锐之
Owner 宇捷光子科技(南京)有限公司
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