Multimode Graded-Index Optical Fibers for Next-Generation Broadband Access

Montero, David R. Sánchez; García, Carmen Vázquez

doi:10.5772/54245

Cited by 2 publications

(1 citation statement)

References 76 publications

(87 reference statements)

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“…This indicates that there is not only light leakage in the PMMA fibers, but also a change in the direction of light. Mode coupling occurs when different modes of light within a fiber interact and exchange energy, leading to changes in the direction of light propagation [58][59][60]. The reason for this change of light direction can be qualitatively analyzed from a physical point of view.…”

Section: Light Distributionmentioning

confidence: 99%

Measurement and Analysis of Light Leakage in Plastic Optical Fiber Daylighting System

Liu

Zou

et al. 2023

Sustainability

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The daylighting systems via polymethylmethacrylate (PMMA) plastic optical fibers have obvious cost advantages and have been widely studied. However, there is light leakage when PMMA optical fibers transmit concentrated sunlight, resulting in a transmission efficiency lower than the theoretical value. This research aims to quantitatively study the light leakage effect of PMMA optical fibers. Concentrated sunlight was used as the sunlight source instead of a monochromatic laser. An adjustable diaphragm was used to adjust the angle of the incident light, and the infrared filter and heat-absorbing glass were used to solve the overheating problem of PMMA fibers. The results show that when the incident angle is greater than 13°, the relative transmission efficiency of the fibers drops rapidly, which means that the light leakage deteriorates. The data also show that the angle of the output beam of PMMA optical fibers is ±30°, which is independent of the angle of the incident beam. Based on this conclusion, a PMMA optical fiber daylighting system with an incident angle of 13° was developed, which has higher transmission efficiency than previously developed systems. This study indicates that the angle effect of light leakage should be considered in the design of a plastic optical fiber daylighting system.

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Section: Light Distributionmentioning

confidence: 99%