A development of a novel TEC-lensed fiber with working distance of 60μm using a standard single-mode fiber

Abstract

The paper presented a new thermally expanded core(TEC) lensed fiber using a standard single-mode fiber(SMF), which was fabricated with a lens at fiber tip using mechanical polishing after expanding the core diameter of a single-mode fiber into about 20㎛. This TEC lensed fiber shows that it has the working distance of 60㎛ and high coupling efficiency (>75%).