[18a-A36-1~6] 3.13 Optical control devices and optical fibers

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[18a-A36-5] Design of Focusing Retroreflector using Bloch-surface-wave Resonance

〇(DC)Keisuke Ozawa¹, Junichi Inoue¹, Kenji Kintaka², Shogo Ura¹ (1.Kyoto Inst. Tech., 2.AIST)

Keywords:

Retroflector,Bloch surface wave,Laser mirror

A flat-type retroreflector for diverging wave emitted from a semiconductor optical amplifier was investigated to construct an external cavity laser without a lens. The retroreflection is generated by utilizing a resonance of a Bloch surface wave supported by a dielectric multilayer. The retroreflector of operation wavelength of 1550 nm was designed. The multilayer was constructed by SiO₂ and a-Si:H. The aperture size and the focal length were set to 31 um and 67 um, respectively. The maximum retro-reflectance of 87% was predicted by FDTD simulation