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How Do Resin, Glass, and Silicon Carbide Waveguides Compare?

Views: 0     Author: Site Editor     Publish Time: 2024-11-18      Origin: Site

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Introduction

In modern optical technology, the choice of waveguide materials is crucial. Different materials have their own unique performance characteristics, making them suitable for various applications. This article provides an in-depth comparison of three main waveguide materials—resin, glass, and silicon carbide—aimed at helping readers better understand the differences among these materials and offering valuable decision-making guidance when selecting different AR glasses.



Performance IndicatorResinGlassSilicon Carbide
Refractive Index1.49-1.601.5-1.92.65
Transmission RateModerate (<90%), decreases with agingHigh (>95%), stableLow (visible light), high (infrared/UV)
Dispersion CoefficientModerateLow (Abbe number 50-60)Low
Optical BandgapNarrow (approximately 2.5 eV)Moderate (approximately 3.5 eV)Wide (approximately 3.0 eV)
HardnessLow (15-20 HV)Moderate (500-700 HV)High (2500 HV)
ToughnessHighModerateLow
Elastic ModulusLow (2-5 GPa)Moderate (70-85 GPa)High (410 GPa)
Chemical ResistanceModerate, sensitive to UVHighExtremely high, resistant to acids, bases, oxidation
Water AbsorptionSome absorption, affects optical performanceLow, non-absorbentExtremely low
High-Temperature ResistanceLow, prone to thermal deformationModerate, may soften at high temperaturesExtremely high, withstands above 2700°C
Processing DifficultyEasy to process, suitable for complex geometriesModerate, requires precisionHigh, difficult to shape into complex forms
Thermal ConductivityLowModerateExtremely high



Conclusion

Through the comparisons presented, we can clearly see the significant differences among the three waveguide materials in terms of refractive index, transmission rate, hardness, and other properties. These characteristics directly impact the performance and effectiveness of waveguides in different applications. Understanding these performance indicators will provide readers with more informed guidance when choosing AR glasses.


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