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Composition of oversized mode area fluorphosphate optical fiber and preparation method thereof

A technology of fluorophosphate and optical fiber, which is applied in the composition and preparation of ultra-large mode area fluorophosphate optical fiber, which can solve the problems that the optical fiber cannot meet the mode field diameter of 100 μm or more and single-mode transmission characteristics at the same time, and achieve excellent thermal performance. Effect

Inactive Publication Date: 2013-04-17
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a composition and a preparation method of a super-large mode area fluorophosphate optical fiber, which mainly solves the problem that the optical fiber in the prior art cannot simultaneously satisfy the mode field diameter above 100 μm and the single-mode transmission characteristic

Method used

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  • Composition of oversized mode area fluorphosphate optical fiber and preparation method thereof
  • Composition of oversized mode area fluorphosphate optical fiber and preparation method thereof
  • Composition of oversized mode area fluorphosphate optical fiber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0095] According to the structural characteristics of GG+IAG optical fiber, take the formula of Group 10 in Table 1-1 and Table 1-2 for processing.

[0096] Aluminum metaphosphate, calcium metaphosphate, lithium fluoride, barium fluoride, magnesium fluoride, strontium fluoride, and zirconium fluoride are analytically pure, with a purity >99.6%; lanthanum fluoride, yttrium fluoride, and rare earth oxides Purity >99.99%. Aluminum metaphosphate can be introduced partly in the form of aluminum fluoride (analytical pure). Preparation of Yb by High Temperature Melting Process 3+ Doped fluorophosphate glass.

[0097] Add 750g of evenly mixed raw materials into a Pt crucible heated by a silicon carbide rod at a temperature of 900°C and a volume of 300ml. The formula is shown in Table 1-1. Stir, clarify, and homogenize the molten glass for 2.5 hours; To 600°C, pour the high-temperature homogenized molten glass onto the preheated cast iron mold, then place it in a 300°C annealing fur...

Embodiment 2

[0103] According to the structural characteristics of GG+IAG optical fiber, take the formula of Group 11 in Table 1-1 and Table 1-2 for processing.

[0104] Aluminum metaphosphate, calcium metaphosphate, lithium fluoride, barium fluoride, magnesium fluoride, strontium fluoride, and zirconium fluoride are analytically pure, with a purity >99.6%; lanthanum fluoride, yttrium fluoride, and rare earth oxides Purity >99.99%. Aluminum metaphosphate can be introduced partly in the form of aluminum fluoride (analytical pure). Preparation of Yb by High Temperature Melting Process 3+ Doped fluorophosphate glass.

[0105] Add 750g of evenly mixed raw materials into a Pt crucible with a temperature of 840°C and a volume of 300ml heated by a silicon carbide rod one by one. The formula is shown in Table 2-1. Stir, clarify, and homogenize the molten glass for 3.5 hours; To 600°C, pour the high-temperature homogenized molten glass onto the preheated cast iron mold, then place it in a 300°C ...

Embodiment 3

[0110] According to the structural characteristics of GG+IAG optical fiber, take the 12th group formula in Table 1-1 and Table 1-2 for processing.

[0111]Aluminum metaphosphate, calcium metaphosphate, lithium fluoride, barium fluoride, magnesium fluoride, strontium fluoride, and zirconium fluoride are analytically pure, with a purity >99.6%; lanthanum fluoride, yttrium fluoride, and rare earth oxides Purity >99.99%. Aluminum metaphosphate can be introduced partly in the form of aluminum fluoride (analytical pure). Preparation of Yb by High Temperature Melting Process 3+ Doped fluorophosphate glass.

[0112] Add 750g of evenly mixed raw materials into a Pt crucible with a temperature of 870°C and a volume of 300ml heated by a silicon carbide rod one by one. The formula is shown in Table 3-1. Stir, clarify, and homogenize the molten glass for 3.5 hours; To 610°C, pour the high-temperature homogenized molten glass onto the preheated cast iron mold, then place it in a 300°C an...

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Abstract

The invention discloses a composition of an oversized model area fluorphosphate optical fiber and a preparation method thereof. The composition of the oversized model area fluorphosphate optical fiber mainly comprises an optical fiber core part and an optical fiber cladding part. The formula comprises aluminium metaphosphate, calcium metaphosphate, lithium fluoride, barium fluoride, magnesium fluoride, strontium fluoride, zirconium fluoride, lanthanum fluoride, yttrium fluoride and rare earth oxides. The composition has the structure of gain guidance-refractive index anti-guidance, the diameter of the fibre core of the gain guidance-refractive index anti-guidance optical fiber is far more than the diameter (4-10 mu m) of the fibre core of the common monomode optical fiber, and the mode field area can be above ten thousands square microns. The core diameter is 100-500 mu m; the cladding is composed of multicomponent glass, and the cladding diameter is about 250-650 mu m; and the difference delta n between the fiber core and the cladding is less than 0.05-0.28% and solves the problem that the mode field diameter is more than 100 mu m and the problem of monomode transmission characteristics.

Description

technical field [0001] The invention belongs to the field of optical materials and laser technology, and in particular relates to the composition and preparation method of an ultra-large modulus area fluorophosphate optical fiber. Background technique [0002] High-power fiber amplifiers and lasers are widely used in laser processing and other fields. Under high-power pumping, when the fiber core diameter is small, the fiber core and fiber end face are prone to catastrophic optical damage; when the fiber core diameter is large, the fiber due to stimulated Raman scattering and stimulated Brillouin scattering Serious nonlinear effects will be produced, which will affect the beam quality of the laser output. [0003] Using optical fiber combining technology or large mode field fiber can theoretically avoid the constraints caused by the above factors, but the core diameter of the step-type large mode field fiber that has been realized so far for single-mode laser output is only...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/00G02B6/02C03C13/04
CPCC03C3/247C03C13/048
Inventor 彭波陆敏李玮楠邹快盛赵卫韦玮段开椋魏德亮王建民杨炳云
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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