Open AccessInvestigation on characteristic of LED power density via tapered fiber
Author(s) -
Mengqiang Li,
Xili Jing,
Lei Zhang,
Ying Guo,
Xiaojian Meng
Publication year - 2022
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ac5d06
Subject(s) - optics , standard illuminant , fiber , materials science , spiral (railway) , ray tracing (physics) , optical fiber , light emitting diode , power density , polarization maintaining optical fiber , monte carlo method , power (physics) , optoelectronics , fiber optic sensor , physics , composite material , mechanical engineering , engineering , statistics , mathematics , quantum mechanics
In this paper, a tapered fiber for improving the power density of the Light Emitting Diode (LED) was designed. Numerical simulation showed that the tapered fiber makes the LED diverging light sources converge on the microscopic area, which makes the LED available for biomedical photonic imaging in the microenvironment. Based on the Monte Carlo Ray Tracing Method, we obtained the law of spot illumination and divergence angle when the light passes through the different parameters tapered fiber. In addition, the tapered fiber was designed as a spiral shape with steadily changing slope, and the effect of the spiral-bending coefficient on the light-gathering properties of the fiber was studied. The concentrating performance of tapered fiber is related to the length, size, and spiral-bending coefficient. The tapered fiber can effectively reduce the illuminant area and improve the power density of the light source.