title: Six mode selective fiber optic spatial multiplexer.
abstract: Low-loss all-fiber photonic lantern (PL) mode multiplexers (MUXs) capable of selectively exciting the first six fiber modes of a multimode fiber (LP01, LP11a, LP11b, LP21a, LP21b, and LP02) are demonstrated. Fabrication of the spatial mode multiplexers was successfully achieved employing a combination of either six step or six graded index fibers of four different core sizes. Insertion losses of 0.2-0.3 dB and mode purities above 9 dB are achieved. Moreover, it is demonstrated that the use of graded index fibers in a PL eases the length requirements of the adiabatic tapered transition and could enable scaling to large numbers.
authors: A M
authors: AM
authors: Velazquez-Benitez
authors: J C
authors: JC
authors: Alvarado
authors: G
authors: G
authors: Lopez-Galmiche
authors: J E
authors: JE
authors: Antonio-Lopez
authors: J
authors: J
authors: Hernández-Cordero
authors: J
authors: J
authors: Sanchez-Mondragon
authors: P
authors: P
authors: Sillard
authors: C M
authors: CM
authors: Okonkwo
authors: R
authors: R
authors: Amezcua-Correa