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Multilayer rare earth doped ion ring core fiber and manufacture method thereof

A production method and rare earth-doped technology, applied in the direction of multi-layer core/cladding optical fiber, cladding optical fiber, etc., can solve the problems of large insertion loss, complex structure, environmental sensitivity, etc., to improve heat resistance, improve pumping Efficiency, effect of reducing connection loss

Inactive Publication Date: 2010-05-19
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the fact that the existing optical fiber can only amplify single-band signals, the complex structure, large insertion loss, and discrete components caused by the need to split, amplify and combine the signal light in the existing multi-band signal optical amplifier devices Many, poor reliability, sensitive to the environment and high cost, etc., at the same time, in order to overcome the existing traditional double-clad single-mode optical fiber limited output laser power and with the increase of optical power, its heat resistance and other defects, the present invention provides A kind of multi-layer rare earth ion doped ring core optical fiber and its manufacturing method

Method used

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  • Multilayer rare earth doped ion ring core fiber and manufacture method thereof
  • Multilayer rare earth doped ion ring core fiber and manufacture method thereof
  • Multilayer rare earth doped ion ring core fiber and manufacture method thereof

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Effect test

Embodiment 1

[0035] Two-layer rare earth ion doped ring core fiber, see figure 1 . The center of the optical fiber is the silicon core area 1, and outside the silicon core area 1, the first rare earth ion doped ring core 41 and the second rare earth ion doped ring core 42 are distributed from the inside to the outside, and the outer edge of the second rare earth ion doped ring core 42 is distributed Layer 3. The rare earth ions doped in the first rare earth ion doped ring core 41 are erbium ions, and the second rare earth ion doped ring core 42 is doped with ytterbium ions.

[0036] In this embodiment, K=0, the first rare earth ion doped ring core 41 and the second rare earth ion doped ring core 42 have the same refractive index, and the pure silicon core region 1 is lower than the first rare earth ion doped ring core 41, the second rare earth ion doped ring core 41, and the second rare earth ion doped ring core 41. The refractive index of the ring core 42; the refractive index of the ou...

Embodiment 2

[0043] Triple layer rare earth ion doped rectangular ring core fiber, see figure 2 . The center of the optical fiber is the silicon core area 1, and outside the silicon core area 1, the first rare earth ion doped ring core 41, the first silicon ring core 21, the second rare earth ion doped ring core 42, and the second silicon ring core are distributed from inside to outside. 22. The third rare earth ion-doped ring core 43, the third silicon ring core 23 and the outer cladding 3, K=3 in this embodiment. The rare earth ions doped in the first rare earth ion doped ring core 41 , the second rare earth ion doped ring core 42 and the third rare earth ion doped ring core 43 are all ytterbium ions.

[0044] The refractive indices of the first rare earth ion doped ring core 41, the second rare earth ion doped ring core 42, and the third rare earth ion doped ring core 43 are equal, and the first silicon ring core 21, the second silicon ring core 22, and the third silicon ring core 23...

Embodiment 3

[0053] Five-layer rare earth ion-doped elliptical ring-core fiber, see image 3 . The center of the optical fiber is the silicon core area 1, and outside the silicon core area 1, the first rare earth ion doped ring core 41, the first silicon ring core 21, the second rare earth ion doped ring core 42, and the second silicon ring core are distributed from inside to outside. 22. The third rare earth ion doped ring core 43, the third silicon ring core 23, the fourth rare earth ion doped ring core 44, the fourth silicon ring core 24, the fifth rare earth ion doped ring core 45, the fifth silicon ring core 25 and Outer cladding layer 3, K=5 in this embodiment. The doping rare earth ion of the first doping rare earth ion ring core 41 is erbium ion, the doping rare earth ion of the second doping rare earth ion ring core 42 is erbium ion, the doping rare earth ion of the 3rd doping rare earth ion ring core 43 is praseodymium ion, the fourth The rare earth ions doped in the rare earth...

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Abstract

The invention relates to a multilayer rare earth ion ring doped core fiber. The center of the fiber is a silicon core area (1), and rare earth doped ion ring cores from (41) to (4N) are distributed outside the silicon core area (1) from the inside to the outside, wherein N is not less than 2 and not more than 10, and a coating layer (3) is distributed outside the Nth rare earth doped ion ring core (4N); silicon ring cores from (21) to (2K) are distributed among the rare earth doped ion ring cores from (41) to (4N) and the coating layer (3), and K is not less than 0 and not more than N; the refractive indexes of all the earth doped ion ring cores are the same, the refractive indexes of all the silicon ring cores and the silicon core area (1) are the same, and the refractive index of the silicon core area is lower than that of the rare earth doped ion ring cores; and the refractive index of the coating layer is lower than that of the silicon core area. The fiber can amplify multiband signal light amplification or self-organize coherent bundles and has the advantages of high pumping efficiency, high heat resistance, compact structure, and the like.

Description

technical field [0001] The invention relates to a multi-layer rare earth ion-doped ring-core optical fiber and a manufacturing method thereof, belonging to the fields of high-power broadband optical fiber amplifiers, lasers and special optical fibers. Background technique [0002] Rare earth-doped fiber amplifiers or lasers use ion fibers doped with rare earth elements (Nd, Sm, Ho, Er, Pr, Tm, Yb, etc.), and use the stimulated emission mechanism to achieve direct amplification of light. [0003] The absorption cross-section and emission cross-section of each rare earth element are different, resulting in different working wavelengths of the corresponding optical fibers. For example, the working wavelength of neodymium-doped fiber is 1000-1150nm, 1320-1400nm; the working wavelength of erbium-doped fiber is 550nm, 850nm, 980-1000nm, 1500-1600nm, 1660nm, 1720nm, 2700nm; the working wavelength of ytterbium-doped fiber is 970-1040nm; The working wavelength of thorium fiber is 45...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/036
Inventor 胡旭东宁提纲裴丽李晶周倩张帆王春灿路玉春
Owner BEIJING JIAOTONG UNIV
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