Low-loss transmission through tightly bent standard telecommunication fibers

Abstract

This letter presents a principle of low-loss light transmission through tightly bent standard telecommunication optical fibers. The design is based on selective launching and filtering of the fundamental mode in standard graded index multimode fiber. The proposed system has demonstrated significantly better macrobend tolerance than commercially available bend resistant fibers.

Bend insensitive multimode fibers with extreme bend loss tolerance and high bandwidth

“…Fibers with high bend tolerance are therefore required in such environments. To date, significant works relating to the understanding and improvement of bend-loss sensitivity have been carried on for single-mode fibers and fiber systems [1][2][3][4][5][6][7][8][9][10][11][12]. However, in security and defense applications, robust connectivity and installation reliability issues often favor multimode fiber systems.…”