Research on CdSe/ZnS Quantum Dots-Doped Polymer Fibers and Their Gain Characteristics
Abstract
:1. Introduction
2. Experimental Section
2.1. Material Characterization
2.2. Fabrication of QDs-Doped PMMA Fibers
2.2.1. Hollow Fiber Filling Method
2.2.2. Melt-Drawing Method
2.2.3. Melt Extrusion Method
2.3. Spectral and Optical Amplification Characteristics Testing
3. Theoretical Model
4. Results and Discussion
4.1. Issues in the Fabrication of QDs-Doped PMMA Fibers
4.1.1. Advantages and Disadvantages of Hollow Fiber Filling Method
- Safety Concerns: The fabrication process involves the use of toxic solvents such as toluene and chloroform, which pose safety risks.
- Length Limitation: The length of the fabricated fibers is constrained by the length of the hollow fiber, making this method unsuitable for large-scale fiber production.
- Bubble Formation: During the mixing of PMMA powder with chloroform, numerous air bubbles can form, which will significantly impact the fiber’s performance if not effectively removed. Additionally, during the curing of the QDs-doped PMMA colloid, internal stresses can arise due to differences in materials, potentially leading to bubble formation between the fiber core and cladding (as shown in Figure 7), further affecting the optical fiber’s performance.
4.1.2. Advantages and Disadvantages of Melt-Drawing Method
- Limited Fiber Length: The fibers produced using this method are typically short, limiting its suitability for large-scale production.
- Control Over Fiber Diameter and Structure: Precise control over the fiber’s diameter and structural integrity is difficult to achieve during the drawing process. The cross-sectional shape of the fibers often deviates from the ideal circular form and may include voids (as shown in Figure 8). These imperfections can adversely affect the optical performance of the fibers and present challenges in the fabrication of subsequent optical fiber jumpers.
4.1.3. Advantages and Disadvantages of Melt Extrusion Method
4.1.4. Choose of the Suitable Fabrication Method
4.2. Theoretical Analysis of Spectral and Amplification Performance
4.3. Experimental Measurement of On-Off Gain
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Peng, X.; Wu, Z.; Ding, Y. Research on CdSe/ZnS Quantum Dots-Doped Polymer Fibers and Their Gain Characteristics. Nanomaterials 2024, 14, 1463. https://doi.org/10.3390/nano14171463
Peng X, Wu Z, Ding Y. Research on CdSe/ZnS Quantum Dots-Doped Polymer Fibers and Their Gain Characteristics. Nanomaterials. 2024; 14(17):1463. https://doi.org/10.3390/nano14171463
Chicago/Turabian StylePeng, Xuefeng, Zhijian Wu, and Yang Ding. 2024. "Research on CdSe/ZnS Quantum Dots-Doped Polymer Fibers and Their Gain Characteristics" Nanomaterials 14, no. 17: 1463. https://doi.org/10.3390/nano14171463