Optical Fiber Amplifier Cassette With Grooved Cooling Substrate
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Solution Overview
Problem
Optical fiber amplifiers face challenges with tangled fibers and heat management, leading to instability and difficulty in locating and replacing faulty components, which affects the stable oscillation of laser beams.
Innovation Solution
A cassette with grooves and recesses on a cooling substrate to orderly contain optical fibers and components, preventing tangling and effectively managing heat generated by the amplifier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If optical fibers are contained in a fixture without structured arrangement, then the fixture structure is simple, but the optical fibers get tangled in a complex manner making maintenance difficult
Solution Approach 1:
The fixture is divided into multiple grooves that segment and separate individual optical fibers. Each groove acts as an independent channel that guides and contains a specific fiber, preventing tangling while maintaining organizational structure. This segmentation allows easy identification and access to individual fibers for maintenance without affecting other fibers.
2Power
If pump power is increased to raise optical fiber amplifier output, then the amplifier output increases, but heat generated from the EDFA fiber increases causing ambient temperature rise and instability
Solution Approach 1:
A cooling substrate is introduced as an intermediary between the optical fiber amplifier and the fixture. This cooling substrate acts as a heat sink that absorbs and dissipates the heat generated by the EDFA fiber during high-power operation. By providing this thermal management intermediary, the system can operate at high output powers without experiencing harmful temperature rises that would cause instability.
3Stability of the object's composition
If optical fibers are just wound and fixed without structured containment, then the fixture structure is simple, but the state of optical fibers changes due to vibrations during transportation
Solution Approach 1:
The fixture provides localized containment structures (grooves) that are specifically designed to hold optical fibers in fixed positions. Each groove is tailored to accommodate a specific fiber, providing localized stability and preventing movement during transportation. This local quality approach ensures that each fiber maintains its designated position and configuration throughout the system.
4Ease of repair
If optical fibers and optical fiber components are contained without structured organization, then the fixture structure is simple, but it becomes difficult to locate and replace anomalous components
Solution Approach 1:
The fixture segments the optical fiber system into distinct, organized sections with each fiber and component having a designated location. This segmentation creates a systematic arrangement where each component can be independently accessed, located, and replaced. The structured organization transforms a complex tangled mass into manageable segments that facilitate efficient maintenance and repair operations.
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 cassette maintains fiber order, facilitates easy component replacement, reduces heat impact, and stabilizes the optical fiber amplifier, enhancing its performance and reliability.
Implementation Method 1
EP 1 011 178 A1 discloses a power amplifier for amplifying a laser radiation, comprising an amplifying fiber which is arranged along a curved line having a locally changing curvature, wherein the power amplifier has an accommodation body, within which the amplifying fiber is accommodated, wherein the accommodation body has sufficient thermal conductivity in order to guarantee the drain of the heat created in the amplifying fiber.
Data Source
Figure 1~2
AI summary
Grooves (22, 23) for containing an optical fiber and five recesses (24) for containing the optical components for an optical fiber amplifier are provided in the surface of a substrate (21). An optical fiber fitted in a groove (23a) for containing the optical fiber and introduced to the substrate (21) is passed through a groove (22a) for containing the optical fiber and fitted in a groove (22) for containing the optical fiber, thence passed through a groove (22b) for containing the optical fiber and introduced to the outside of the substrate (21). In the recess (24) for containing the optical component for an optical fiber amplifier, an optical component such as a photocoupler is fitted and coupled with the optical fiber. Light such as pumping light is passed through an optical fiber contained in the groove (23) for containing the optical fiber and introduced to an optical component such as a photocoupler. When the optical fiber and the optical component for an optical fiber amplifier are contained in such a recess of the cassette, they can be contained orderly.