Array fiber laser device, amplifier and manufacturing methods of multi-core fiber

An array fiber and laser technology

Active Publication Date: 2015-04-29
SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing technology can only achieve laser output of a single wavelength

Method used

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  • Array fiber laser device, amplifier and manufacturing methods of multi-core fiber
  • Array fiber laser device, amplifier and manufacturing methods of multi-core fiber
  • Array fiber laser device, amplifier and manufacturing methods of multi-core fiber

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] The array fiber laser of the present invention uses a coreless fiber to introduce pumping light into a multi-core fiber, and performs multiple side pumps on the gain fiber in the multi-core fiber to realize multi-wavelength laser output.

[0025] Specifically, such as figure 1 The illustrated embodiment of the array fiber laser includes a multi-core optical fiber 100; the multi-core optical fiber 100 is a capillary 101, and a plurality of gain fibers 102 and coreless optical fibers 103 laid radially along the capillary 101 are fixed inside; the capillary The two ends and sides of 101 are coated with a high reflection film for pump light 105, or its two ends are coated with a high reflection film for pump light 105, and the side is provided with cladding; the end faces of each gain fiber 102 are for pump light 105. Light 105 highly refle...

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PUM

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Abstract

The invention discloses an array fiber laser device which comprises a multi-core fiber. The multi-core fiber is a capillary tube, and multiple gain fibers and coreless fibers laid in the radial direction of the capillary tube are fixed to the inside of the multi-core fiber; two end surface and side surfaces of the capillary tube are plated with high-reflective films for pump light; film layers with high reflectivity for the pump light or photoetching gratings are applied to end surfaces of the gain fibers; the refractive index of the coreless fibers is not larger than that of an adjacent medium. The invention further discloses another array fiber laser device. The coreless fibers are used for introducing the pump light into the multi-core optical fiber, and side pumping is performed on the gain fibers in the multi-core fiber for multiple times, so that multi-wavelength signals are amplified. The invention further discloses two manufacturing methods of the multi-core fiber. The laser device or an amplifier can realize multi-wavelength laser output and signal amplification, is an all-solid-state device, and is easy to operate, simple in structure and manufacturing process and low in cost.

Description

technical field [0001] The invention relates to the fields of laser technology and optical fiber communication, in particular to a method for manufacturing an array fiber laser, an amplifier and a multi-core optical fiber. Background technique [0002] In recent years, fiber lasers have developed rapidly. High-power fiber lasers are widely used in the processing and processing of metal and non-metal materials, laser engraving, laser marking, laser welding and laser medicine due to their unique advantages. more attention. Now in order to achieve high-power laser output, it is generally achieved by using multiple groups of multi-mode semiconductor diodes to pump double-clad fibers or using amplifiers to amplify. The shape and diameter of the inner cladding enable efficient coupling with high power laser diodes. Rare earth ions absorb multi-mode pump light and radiate single-mode laser, so that the high-power, low-brightness laser diode pump laser is converted into a strong l...

Claims

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Application Information

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IPC IPC(8): H01S3/067G02B6/02G02B6/036
Inventor 吴砺张猛张党卫贺坤林磊
Owner SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
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