[10a-C309-1~13] 12.7 Biomedical Engineering and Biochips

9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation AwardEnglish Presentation

[10a-C309-1] 3D Wave Propagation Analysis of Incident-Angle-Dependent Light Leakage from Tapered Optical Fibers

〇(M1)Aritath Thammathikul¹, Ryoma Okada¹, Makito Haruta^1,2, Hiroyuki Tashiro^1,3, Jun Ohta¹, Kiyotaka Sasagawa¹ (1.NAIST, 2.Chitose Inst. Sci. Tech., 3.Kyushu Univ.)

Keywords:

tapered fiber,fluorescence imaging,biophotonic devices

In this study, we applied a scalar three-dimensional Wave Propagation Method (WPM) to study the incident-angle-dependent light leakage along a tapered optical fiber. Here, input angles of 0°, 6°, and 10° were simulated. Each input angle resulted in different power distributions among guided modes; therefore, the selected modes corresponding to each input angle were launched into a tapered optical fiber using 3D WPM. The results indicated that larger incident angles shifted the light leakage position away from the taper tip. These insights offer a basis for estimating the light emission direction toward the sensor, which will guide the design of controlled light delivery in implantable image sensors.