[11p-PB2-1~9] 3.14 Optical control devices and optical fibers

[11p-PB2-6] Fabrication of a fiber probe with double tapered core and tapered clad

〇Shuji Mononobe¹, Tomoya Kanou¹, Tsukasa Kodaira¹ (1.Toyo Univ.)

Keywords:optical fiber, etching, near-field optics

The authors propose a method for fabricating a near-field optical fiber probe to enhance the aspect ratio. The method involves four steps: (1) tapering clad, (2) hollowing the taper end portion, (3) flattening the end, and (4) protruding double-tapered core from the flattened clad. The fabricated probe has a flattened clad dimaeter of 4.5 microns and a small aspect ratio of 0.7.