Optical Amplification Component Heat Dissipation Plate Fiber Winding

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Solution Overview

Problem

High-output fiber laser devices face a short lifespan due to heat generation in amplification optical fibers, with existing heat dissipation techniques failing to adequately address deterioration at the fiber ends.

Innovation Solution

An optical amplification component is designed with an amplification optical fiber arranged on a heat dissipation plate, where the fiber ends, which experience the highest heat generation, are positioned away from the fiber portions wound in a spiral configuration, effectively reducing heat-induced deterioration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the amplification optical fiber is fixed to the heat dissipation plate using conventional techniques, then heat dissipation is improved, but the fiber ends still experience excessive heat generation causing deterioration and short lifespan

Engineering Contradiction:
Improveheat dissipationVSAvoidfiber lifespan
Core Design Contradiction:
TemperatureVSReliability

Solution Approach 1:

The patent applies local quality by creating different spatial arrangements for different sections of the fiber. The fiber is configured with wound sections at the ends (where heat generation is highest) and a straight section in the middle (where heat generation is lowest), optimizing heat dissipation for each location based on its thermal characteristics

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent transitions from a simple linear arrangement to a three-dimensional configuration by winding the fiber ends in loops or coils on the heat dissipation plate. This dimensional change increases the contact area between the fiber and the plate, enhancing heat dissipation efficiency at the critical end sections

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Loss of energy

If pumping light enters from both ends to distribute heat generation, then overall heat management is improved, but the fiber portions at the ends still experience maximum heat concentration causing deterioration

Engineering Contradiction:
Improveheat distributionVSAvoidheat-induced deterioration
Core Design Contradiction:
Loss of energyVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the problematic end sections from the main linear path and reconfigures them as separate wound loops. This separation allows the end sections to be independently managed and positioned on the heat dissipation plate, removing them from the high-heat generation zone while maintaining their functional role

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The heat dissipation plate serves as an intermediary between the fiber ends and the surrounding environment. By positioning the wound fiber sections directly on this thermally conductive plate, heat is efficiently transferred from the fiber to the plate and then dissipated, protecting the fiber from heat-induced deterioration

Inventive Principle:
Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration significantly reduces deterioration of the fiber portions on the inner sides of the ends, thereby improving the lifespan of the amplification optical fiber and enabling more efficient heat dissipation.

Implementation Method 1

a heat dissipation plate; and an amplification optical fiber arranged on the heat dissipation plate

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS9312654B2Optical amplification component and fiber laser device
Publication Date: 2016.04.12 FUJIKURA LTD
  • US9312654B2 patent drawing
  • US9312654B2 patent drawing
  • US9312654B2 patent drawing

AI summary

An optical amplification component 1 includes a heat dissipation plate 10 and an amplification optical fiber 20 arranged on the heat dissipation plate 10. The amplification optical fiber 20 includes a first section SC1 extending from a reference position RP between a first end E1 and a second end E2 of the amplification optical fiber 20 up to a position at which a fiber portion 20A extending from the reference position RP toward the end E1 and a fiber portion 20B extending from the reference position RP toward the end E2 are aligned in one direction, and a second section SC2 where the fiber portions 20A and 20B aligned in one direction are wound in a spiral outside the first section SC1. The circumferences of one and the other end parts of the amplification optical fiber 20 are separated from side surfaces of the fiber portions wound in a spiral.