Efficient circulating filling-in clad pumping optical fiber amplifier

A technology of pumping optical fiber and double-clad optical fiber, which is applied in the direction of instruments, optics, nonlinear optics, etc., can solve the problems of high loss of reverse transmission light, increase of production difficulty, overall cost, and large loss, and achieve flexible design, High absorption rate, enhanced absorption effect

Active Publication Date: 2007-01-03
GUANGXUN SCI & TECH WUHAN
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Problems solved by technology

However, due to the special structure of the single-mode and multimode multimode fiber combiner (see Figure 1.2), part of the pump light will inevitably be taken away in the cladding of the fiber used to output signal light; in addition, the multimode The optical loss of the optical fiber combiner in the reverse transmission is significantly hi...

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  • Efficient circulating filling-in clad pumping optical fiber amplifier
  • Efficient circulating filling-in clad pumping optical fiber amplifier
  • Efficient circulating filling-in clad pumping optical fiber amplifier

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Embodiment Construction

[0077] Main design idea of ​​the present invention is:

[0078] 1. The current multi-mode / single-mode fiber combiner ( Figure-1.1 The middle device 13) is replaced by a three-port multi-mode / single-mode hybrid WDN device, so as to realize the injection of multi-mode pump light through the WDM device and the separation of the remaining pump light. The optical structure of cladding pumped fiber amplifier with circulation pumping structure is as follows figure 2 As shown, it consists of doped double-clad fiber 1, multimode / single-mode hybrid WDM 2 (or 3), input / output optical isolators 4 and 5, 2×1 multimode fiber combiner 14, input / output single mode optical fiber 10, etc.; wherein the WDM 2 (or 3)-doped double-clad fiber 1-2 × 1 multimode fiber multiplexer 14-WDM2 (or 3) constitutes a multimode pump light ring; the pump light It is injected into the pumping optical ring through the multimode fiber 9 and the 2×1 multimode fiber combiner 14 .

[0079] 2. The three-port multi...

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Abstract

A high-effective cycling injecting envelope pump fiber amplifier, including: the inputting end separator 4, the series connection standard monofilm fiber 10, the double envelopes fiber 1, the series connection standard monofilm fiber 10, and the outputting end separator 5, the characteristic is: uses the multimode / monofilm mixing WDN parts that consists of the monofilm single-core collimator, the medium filter slice and the multimode / monofilm mixing double-core collimator, and 2*1 multimode fiber combiner 14 to be the cycling injecting structure, the high reflectivity filter slice makes the sparing pump luminous energy to enter the cycling road, improves the pump efficiency of the envelope pump fiber amplifier, and reduces the cost.

Description

technical field [0001] The invention relates to a cladding-pumped optical fiber amplifier, in particular to a cladding-pumped optical fiber amplifier adopting a WDM device and a multimode optical fiber multiplexer circulation pumping structure. Background technique [0002] The newly developed high-power optical fiber amplifier generally adopts multi-mode double-cladding pumping technology. The main advantages of cladding-pumping optical fiber amplifier are as follows: 1) Compared with single-mode fiber core pumping technology, multi-mode cladding pumping technology has The obvious advantage of using multi-mode cladding pumping technology is that the pump light is input into a multi-mode double-clad fiber whose cross-section is hundreds to thousands of times that of a single-mode fiber. Therefore, the same input optical density , multi-mode cladding pumping can allow hundreds to thousands of times the input of single-mode pumping, which makes it easy to achieve high-power or...

Claims

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Application Information

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IPC IPC(8): G02F1/39G02F1/35
Inventor 傅焰峰龙浩吴克宇付浩军
Owner GUANGXUN SCI & TECH WUHAN
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