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Erbium-doped fiber amplifier and method with high radiation resistance

A technology of erbium-doped optical fiber and radiation characteristics, which is applied in nonlinear optics, optics, instruments, etc., can solve the problems of lack of theoretical research and high radiation-resistant EDFA, and achieve the reduction of bit error rate and the smooth design and production process. The effect of complexity, avoiding complicated experimental process and high process requirements

Active Publication Date: 2017-01-18
NANJING UNIV
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Problems solved by technology

There are not many existing literatures on the radiation characteristics of EDFA, and the research on radiation-resistant EDFA also relies more on experiments to change the material, lacking theoretical research, and the existing technology does not provide a high-radiation-resistant EDFA that meets the actual system

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  • Erbium-doped fiber amplifier and method with high radiation resistance
  • Erbium-doped fiber amplifier and method with high radiation resistance
  • Erbium-doped fiber amplifier and method with high radiation resistance

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0032] The present invention utilizes the theoretical model of O. Berne's, on the basis of researching the gain characteristics of EDFA, constructs an EDFA whose configuration is dynamically adjustable as the radiation dose changes. An erbium-doped fiber amplifier with high anti-radiation characteristics, including a receiving module, a pumping and emitting module, a radiation detection module, a control module, a 1×n first optical switch, a 1×n second optical switch, and n optical switches with different lengths Erbium-doped optical fiber and combiner, n is an integer greater than or equal to 2; where,

[0033] The receiving module is used to receive the laser signal in the space, and the laser signal is input to the combiner after sequentially passing through the 1×n first optical switch and n erbium-doped optical fibers arranged in parallel;

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Abstract

The invention discloses an erbium-doped optical fiber sensor with high radiation resistance. The erbium-doped optical fiber sensor comprises a receiving module, a pumped transmitting module, a radiation detection module, a control module, a first 1*n photoswitch, a second 1*n photoswitch, n erbium-doped optical fibers different in length and a combiner; n is an integer large than or equal to 2. The invention further discloses a method for imparting high radiation resistance to the erbium-doped optical fiber sensor. From operating characteristics of the erbium-doped optical fibers, different lengths and pumped optical powers are distributed to different radiation doses; various configurations are combined, and configuration of the erbium-doped optical fiber sensor can be dynamically adjusted with the radiation doses. The erbium-doped optical fiber sensor and the method have the advantages that radiation resistance of the erbium-doped optical fiber sensor can be improved, and attenuation in gain of the erbium-doped optical fiber sensor caused by radiation is reduced; the hardware design process and the hardware manufacturing process are both simple, and large-batch manufacturing and servicing are facilitated.

Description

technical field [0001] The invention relates to an erbium-doped optical fiber amplifier, in particular to an erbium-doped optical fiber amplifier and a method with high anti-radiation characteristics. Background technique [0002] In the previous long-distance optical fiber communication system, a large number of electrical relay stations are usually built on the communication line to receive, convert and amplify the signal to reduce the attenuation and dispersion of the signal. With the advent of the big information age, traditional electrical relays can no longer meet people's needs for high-speed communication due to the electronic bottleneck of data processing. In the 1980s, the advent of erbium-doped fiber amplifiers (EDFAs) has cross-age significance for the communication field. Because EDFA directly amplifies optical signals, and has the advantages of high gain, low noise, long bandwidth, simple structure, and not affected by polarization state, it has been widely us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/39H01S3/067
Inventor 李密焦文祥张旭苹宋跃江路元刚
Owner NANJING UNIV
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