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Method for reducing optical signal crosstalk

A technology of light signal and weak light signal

Inactive Publication Date: 2018-09-28
浙江科易理想量子信息技术有限公司
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Problems solved by technology

[0005] The invention provides a method for reducing optical signal crosstalk to solve the current problem of optical signal interference

Method used

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  • Method for reducing optical signal crosstalk
  • Method for reducing optical signal crosstalk
  • Method for reducing optical signal crosstalk

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Embodiment Construction

[0020] Such as figure 1 , figure 2 and image 3 As shown, when the method for reducing optical signal crosstalk of the present invention is used, the device connection method is: at the transmitting end, several strong optical signals are first connected to the adjustable attenuator, and the attenuator is then connected to the multiplexed wavelength division multiplexing system (hereinafter referred to as: WDM module) on the channel of the corresponding wavelength, and several weak optical signals are directly connected to the corresponding channel of the WDM module, and then the signal is transmitted to the WDM module at the receiving end through the long-distance communication transmission cable ; At the receiving end, the strong optical signal separated by the WDM module is directly connected to the corresponding optical device responsible for signal reception, and the weak optical signal is first connected to the narrow band-pass filter matching the transmission waveleng...

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Abstract

The invention discloses a method for reducing optical signal crosstalk, which at least comprises the steps as follows: emitting a strong light signal; attenuating the strong light signal via an adjustable attenuator; emitting a weak light signal; combining the attenuated strong light signal and the weak light signal; transmitting the combined light signal; partitioning the combined light signal; receiving the attenuated strong light signal; and receiving the weak light signal, thereby effectively solving the situation of interference generated when the intensity difference between different optical signals is large. The problem in the prior art is effectively solved, and the cost is basically equivalent to the cost in the prior art.

Description

【Technical field】 [0001] The invention relates to the field of optical communication, in particular to the optical communication of a wavelength division multiplexing system. 【Background technique】 [0002] The WDM wavelength division multiplexing system is mainly used to realize the combined transmission of multiple optical signals of different wavelengths. It mainly relies on the multi-stage filtering of WDM internal devices to realize the multiplexing of different wavelength optical signals at the transmitting end and the demultiplexing at the receiving end. Therefore, a single optical fiber can be fully used to transmit multiple optical signals, and the transmission capacity of the optical fiber and cable can be improved and tapped, which is widely used in the transmission network of the existing optical communication system. [0003] In the existing WDM technology, a small part of the optical signal between each channel and the scattered light generated by it will enter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/69H04J14/02
CPCH04B10/697H04J14/02
Inventor 吴峡
Owner 浙江科易理想量子信息技术有限公司
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