Cladding Light Stripper Structure for Gradual Heat Dissipation
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Solution Overview
Problem
Cladding light in high-power laser apparatuses causes heat generation and damage to optical fiber devices due to its stray nature, affecting beam quality and potentially leading to device damage.
Innovation Solution
A cladding light stripper is designed with a refractive component having a refractive index greater than the cladding layer, featuring gradually increasing cross-sectional areas in the radial direction, which refracts and scatters cladding light externally while facilitating stepped heat dissipation to prevent temperature rise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If cladding light is stripped using conventional methods, then cladding light removal is achieved, but heat generation causes damage to optical fiber devices
Solution Approach 1:
A refractive member with refractive index n3 satisfying n1<n2<n3 is introduced as an intermediary between the cladding layer (refractive index n2) and the coating layer. This intermediary structure gradually refracts cladding light outward, converting concentrated light energy into gradual thermal energy dissipation, thereby preventing sudden heat generation and device damage
Solution Approach 2:
The refractive member's cross-sectional area is designed to gradually increase from the input end to the output end of the optical fiber. This parameter change enables progressive cladding light extraction along the fiber length, distributing heat generation along the fiber rather than concentrating it at a single point, thus preventing localized overheating
2Productivity
If refractive component with larger cross-sectional area is used to strip cladding light, then light stripping efficiency is improved, but heat concentration increases causing device damage
Solution Approach 1:
The refractive member is segmented along the optical fiber length with its cross-sectional area gradually increasing. This segmentation distributes the cladding light stripping function across multiple sections, preventing concentration of both light extraction and heat generation in a single location, thereby maintaining stripping efficiency while avoiding heat-induced damage
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
The cladding light stripper effectively strips stray light and dissipates heat, preventing damage to optical devices by refracting cladding light and ensuring safe operation of laser apparatuses.
Implementation Method 1
a refractive component including at least one first refractive member, in which the first refractive member covers at least a part of an outer peripheral surface of the cladding layer, a refractive index of the first refractive member is greater than a refractive index of the cladding layer
Data Source
AI summary
The disclosure provides a cladding light stripper, a method for manufacturing the same, and a laser apparatus. The cladding light stripper includes an optical fiber and a refractive component. A refractive index of a first refractive member of the refractive component is greater than a refractive index of the cladding layer, so as to achieve the stripping of cladding light. Moreover, cross-sectional areas of the first refractive member in a radial direction of the optical fiber gradually increase in a direction from an input end to an output end of the optical fiber, so as to avoid rapid temperature rise at local position of the first refractive element to safely strip the cladding light.