Optical microfiber using HF etching

Thanks to the efforts of Anatoly Mikhalovich Shegeda the narrowing down of optical fiber down to 1.7 um has been achieved. The narrowing down is achieved due to the hydrofluoric acid etching. We are glad to share the photos with you.

Unaltered fiber approximately 120 um in diameter

Narrow part of the fiber, 1.7um width