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An active and passive integrated optical fiber and its preparation method

A manufacturing method and optical fiber technology, applied in clad optical fiber, glass manufacturing equipment, manufacturing tools, etc., can solve problems such as leakage, easy burning of solder joints, and easy aging of optical glue

Active Publication Date: 2021-05-04
江苏睿赛光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, the optical glue is easy to age after long-term use, and it is easy to absorb light leakage and generate heat, especially in higher power lasers, the solder joints are easy to burn

Method used

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  • An active and passive integrated optical fiber and its preparation method
  • An active and passive integrated optical fiber and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] as attached figure 1 Shown is a basic structure schematic diagram of an active and passive integrated optical fiber of the present invention, wherein 11 is a coating layer, 12 is a cladding glass tube of an optical fiber, 13 is a core undoped with rare earth ions, and 14 is Rare earth ion doped core.

[0069] In the active and passive integrated optical fiber in this embodiment, one end 13 of its fiber core is the fiber core of passive material, and the fiber core middle part 14 is the fiber core of active material, and the fiber core 13 and the fiber core 14 between The transition part is directly transitioned, and the cladding glass tube of the outer layer has no change.

Embodiment 2

[0071] 1. The quartz glass rods with core doped with rare earth Yb ions and without rare earth ions were prepared by MCVD method. Use the method of machining, cutting and grinding to remove the outsourced pure quartz part, and process the two kinds of glass rods to obtain a cylindrical mandrel with a diameter of 2mm. The length of the active mandrel is 5mm, a total of 3 pieces, and the length of the passive mandrel is 15mm, a total of 4 root;

[0072] 2. Process pure quartz glass to obtain a circular glass tube with an inner diameter of 2mm and an outer diameter of 40mm, with a length of 150mm;

[0073] 3. Grinding and polishing the obtained mandrel and glass tube to make them fully fit;

[0074] 4. Rinse the mandrel and casing with hydrofluoric acid aqueous solution, rinse with deionized water, and blow dry with dry nitrogen;

[0075] 5. Put the dried mandrel and glass casing according to the attached figure 2 The structure shown is arranged, and the tail end is heat tape...

Embodiment 3

[0079] 1. Prepare bulk Nd-doped phosphate glass by melting method, and simultaneously prepare two pieces of bulk phosphate glass with different refractive indices without rare earth ion doping as core rod and cladding glass tube materials;

[0080] 2. Prepare Nd-doped cylindrical mandrels with a diameter of 2 mm and a length of 5 mm, 4 in total, by mechanical processing. At the same time, undoped bulk phosphate glass with a high refractive index is prepared as an undoped mandrel There are 5 tubes in total, with a length of 10 mm. The glass casing with an inner diameter of 2 mm and an outer diameter of 25 mm is prepared by processing undoped bulk phosphate glass with a low refractive index, and the length is 120 mm;

[0081] 3. Grinding and polishing the obtained mandrel and glass tube to make them fully fit;

[0082] 4. All glass parts are cleaned with hydrofluoric acid aqueous solution, rinsed with deionized water, and then purged and dried with dry nitrogen;

[0083] 5. Put...

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Abstract

The invention proposes an active-passive integrated optical fiber and a manufacturing method thereof. The core of the active-passive integrated optical fiber includes an active material core and a passive material core, or different active material cores. Core, or multiple cores of the same active material, the combination of different cores is free of fusion, which fundamentally eliminates a series of problems caused by fusion. The production method is to put multiple core rods into the bag The prefabricated rods are obtained from the layered glass tubes, which are completely bonded to each other, and then the preformed rods are put into the furnace to heat up and keep warm. The fusion between the rods and between the core rod and the cladding glass tube, and finally drawing the preform rod to make an active and passive integrated optical fiber.

Description

technical field [0001] The invention designs an optical fiber and a preparation method thereof, in particular relates to an active and passive integrated optical fiber in the field of fiber laser and a preparation method thereof. Background technique [0002] Active optical fiber refers to the fiber core doped with rare earth ions, which can be used to generate fiber laser. Passive optical fiber refers to the fiber that is not doped with rare earth ions in the core, and is generally used to conduct laser light. In the current field of fiber lasers and amplifiers, active fibers are used to generate laser light or amplified and then exported through passive fibers. Both types of fibers are welded and connected by fiber optic fusion machines. Generally, special protection devices are required to protect the fusion points. . Therefore, the fusion quality of the active fiber and the passive fiber has a great effect on the transmission efficiency of the fiber and the stability of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/02C03B37/027
CPCC03B37/027G02B6/02
Inventor 李骁军李文涛彭彪马昌赞
Owner 江苏睿赛光电科技有限公司