Effect of grinding offset and radius of curvature on coupling efficiency of aspherical microlens for coupling high-power laser to fiber

Author

Huang, Yi-Chung ; Hsieh, Wen-Hsuan ; Wang, Li-Jin ; Sheen, Maw-Tyan ; Hsu, Yi-Cheng ; Liu, Yu-Da ; Lin, Yong-Shian ; Huang, Pi Ling ; Tsai, Ying-Chien ; Cheng, Wood-Hi

Author_Institution

Dept. of Photonics, Nat. Sun Yat-sen Univ., Kaohsiung, Taiwan

fYear

2012

Firstpage

1

Lastpage

2

Abstract

We demonstrate a new scheme of aspherical microlens (ASM). By employing a single-step grinding with fully automatic technique to precisely and quantitatively control the grinding offset less than 0.5 μm and minor radius of curvature within 2.4-3.5 μm, the ASMs exhibited a high-average coupling efficiency of 84.5%. This study demonstrates that the proposed ASMs through a single-step grinding technique can achieve high-average coupling efficiency better than any other grinding techniques to form asymmetric microlenses.

Keywords

aspherical optics; grinding; microlenses; optical fibre communication; aspherical microlens; automatic technique; coupling high-power laser to fiber; grinding offset; high-average coupling efficiency; radius of curvature; single-step grinding; Couplings; Fabrication; Laser excitation; Lenses; Microoptics; Optical fiber communication; Photonics;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics (CLEO), 2012 Conference on

Conference_Location

San Jose, CA

Print_ISBN

978-1-4673-1839-6

Type

conf

Filename

6325854