Raman amplification device based on lead sulfide doped quartz optical fiber

A silica fiber and Raman amplification technology, applied in optics, lasers, nonlinear optics, etc., can solve the problem of small distance product of fiber amplifier capacity

Inactive Publication Date: 2019-08-20
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a lead sulfide-doped quartz fiber Raman amplific

Method used

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  • Raman amplification device based on lead sulfide doped quartz optical fiber

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Embodiment 1

[0027] see figure 1 , the lead sulfide-doped quartz fiber Raman amplification device, including a signal source 1, an optical isolator A 2, a lead sulfide-doped quartz fiber 3, a wavelength division multiplexing coupler 4, a high-power pump laser 5, an optical isolator Second 6, optical power meter 7, is characterized in that: described signal source 1 is connected optical isolator first 2 by quartz fiber, and optical isolator first 2 is connected wavelength division multiplexing coupler 4 by lead sulfide doped quartz fiber 3, so The wavelength division multiplexing coupler 4 is connected to the high-power pump laser 5 and the optical isolator B 6 through the quartz fiber, and the optical isolator B 6 is connected to the optical power meter 7 through the quartz fiber. and 14000~1650nm, the gain flatness is 0.35dB and 0.68dB respectively.

Embodiment 2

[0029] like figure 1 As shown, the lead sulfide-doped quartz fiber Raman amplification device includes a signal source 1, an optical isolator A 2, a lead sulfide-doped quartz fiber 3, a wavelength division multiplexing coupler 4, a high-power pump laser 5, an optical Isolator B 6, optical power meter 7; all parts are connected by quartz optical fiber, optical isolator A 2, optical isolator B 7, high-power pump laser 6 have wavelength matching, wavelength division multiplexing coupler 4 and signal source 1 and the high power pump laser 6 are matched.

[0030] The principle of operation of the device is as follows:

[0031] The signal source 1 will be turned on, and then the power of the pump laser 6 will be adjusted. The input signal light and pump light will have a stimulated Raman scattering effect in the lead sulfide-doped silica fiber 3, thereby amplifying the signal light, and the optical power meter 7 can Measure the amplified optical power of the signal.

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Abstract

The invention relates to a Raman amplification device based on a lead sulfide doped quartz optical fiber. The Raman amplification device comprises a signal source, an optical isolator A, the lead sulfide doped quartz optical fiber, a wavelength division multiplexing coupler, a high-power pump laser, an optical isolator B, an optical power meter and the like. All parts of the device are connected through quartz optical fibers, the lead sulfide doped quartz optical fibers are prepared by combining an improved chemical vapor deposition method with a lead sulfide gasification process, the preparation process is simple, and the finished optical fibers are high in Raman intensity and Raman gain coefficient. The high-power pump laser provides pump light required by the amplifying device, and thepump light and the signal light generate Raman gain in the optical fiber, so that the transmitted signal light is amplified. The device is simple in structure, safe, stable and good in amplification effect, and the cost is further reduced.

Description

technical field [0001] The invention relates to a Raman amplification device based on lead sulfide-doped quartz optical fiber, which belongs to the field of optical fiber communication and optical fiber sensing. Background technique [0002] In recent years, with the rise of data services such as high-definition video, cloud computing, and big data centers, the demand for network bandwidth has exploded, and data services with large traffic and large connections have caused rapid growth in traffic data, which has brought great challenges to traditional communication networks. posed great challenges. Therefore, further improving the communication capacity of optical fiber has become the focus of research in the field of communication technology. The traditional erbium-doped fiber amplifier (EDFA) has the advantages of high gain, low noise, high pump efficiency, low connection loss, polarization insensitivity, etc., and has good amplification characteristics in the current com...

Claims

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Application Information

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IPC IPC(8): H01S3/067H01S3/30G02F1/39
CPCG02F1/39H01S3/06716H01S3/302
Inventor 陈振宜陈惠王廷云陈娜庞拂飞刘书朋王水莲
Owner SHANGHAI UNIV
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