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Multi-core multi-rare earth doped ultra-wideband optical comb light source

A rare earth doping and ultra-broadband technology, applied in the direction of lasers, laser components, and the structure/shape of active media, to achieve high integration, large signal-to-noise ratio, and good stability

Inactive Publication Date: 2019-11-05
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] To sum up, in order to generate a comb spectrum, predecessors used FP etalons, absorbing gas etalons, cascaded fiber gratings and other schemes, but used a variety of rare earth doping in multi-core fibers, using rare earth gain The spectral line competition mechanism to obtain an ultra-broadband comb spectrum is still a research blank

Method used

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  • Multi-core multi-rare earth doped ultra-wideband optical comb light source
  • Multi-core multi-rare earth doped ultra-wideband optical comb light source
  • Multi-core multi-rare earth doped ultra-wideband optical comb light source

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Embodiment Construction

[0040] Examples are further detailed below.

[0041] In the 7-core doped praseodymium ion double-clad fiber, gratings of 7 wavelengths are respectively written on the 7 cores, and these wavelengths are 1310nm, 1312nm, 1314nm, 1316nm, 1318nm, 1320nm, 1322nm; in the multimode coupler Connect the 1017nm multi-mode pump to the pump branch, and finally get it on the single-mode fiber after the add-drop multiplexer Figure 4 The 7th order comb spectrum shown.

[0042] In a 32-core erbium ion-doped double-clad fiber, gratings of 32 wavelengths are respectively written on 32 cores. 1559.063nm, 1560nm; connect the 976nm multimode pump to the pump branch of the multimode coupler, and finally get it on the single-mode fiber after the add-drop multiplexer Figure 5 The 32nd order comb spectrum shown.

[0043] In a 22-core erbium ion-doped double-clad fiber, gratings of 22 wavelengths are respectively written on 22 cores, and these wavelengths are 1565nm, 1566.364nm, 1567.728nm..., 1592...

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Abstract

The invention discloses a multi-core multi-rare earth doped ultra-wideband optical comb light source. The optical comb light source is composed of a single-mode optical fiber for outputting a comb-shaped light source, a wavelength add-drop multiplexer, a multimode pumping branch, a multimode coupler, a multi-core fan-in beam combiner, a multi-core multi-rare earth doped double-clad optical fiber and a multi-core fiber bragg grating, wherein an emission spectrum of the doped rare earth ions covers five bands of O, E, S, C and L. The emission spectrum is generated by the same rare earth ions doped in a fiber core of the multi-core optical fiber during pumping; and the light source is amplified by the fiber core rare earth ions again, so that the spectral gain and the signal-to-noise ratio are further enhanced due to spectral line competition, and the optical comb light source with ultra-wide band, high gain, high signal-to-noise ratio and uniform density interval is obtained.

Description

[0001] (1) Technical field [0002] The invention relates to an optical fiber comb light source for middle and short distance, high capacity communication and optical fiber sensing. [0003] (2) Background technology [0004] Short-distance, high-capacity communications are traditionally multimode communications. For the communication occasions of automobile and machine control, the basic control is within 50 meters. This occasion is very easy to meet, such as the communication system composed of plastic optical fiber and common light source, the bandwidth is within 100MHz. [0005] For slightly extended occasions such as data centers and ships, the basic control is within 500 meters. This occasion is also relatively easy to meet, such as material gradient multimode fiber, with LED or VECSEL laser, the bandwidth is within 10GHz. [0006] For most scenarios, the communication distance is within 1000m to 10km, and the bandwidth requirements are high, and it is difficult for th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/094
CPCH01S3/06708H01S3/06716H01S3/0675H01S3/094069
Inventor 成煜苑立波王东辉邓洪昌
Owner GUILIN UNIV OF ELECTRONIC TECH
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