▎ 摘　　要

NOVELTY - The converter has a polarization controller (3) and a 2-m adjustable optical fiber laser (1) connected with two branches of a first coupler (4). The polarization controller is connected with a first polarization independent isolator (7). The first polarization isolationer is connected to the polarization controller. A section of high nonlinear optical fibers (9) is connected between the polarization controllers. The high non linear optical fibers are connected to a graphene composite micro-nano optical fiber (10). The graphene composite microporous optical fiber and the second coupler are connected by a shunt. The shunt of the third coupler is communicated with a spectrometer (12) to measure the spectrum and conversion efficiency. USE - High conversion efficiency wavelength converter based on graphene composite micro-nano optical fiber. ADVANTAGE - The conversion efficiency of up to -28.1 dB can be realized by only one titanium-doped optical fiber amplifier is amplified. The wavelength conversion efficiency is improved. The network system capacity, optical switch, wavelength routing selection, in light exchange aspect is also very important and wide application prospect. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of high conversion efficiency wavelength converter based on graphene composite micro-nano optical fiber. Optical fiber laser (1) Polarization controller (3) First coupler (4) First polarization independent isolator (7) High nonlinear optical fibers (9) Graphene composite micro-nano optical fiber (10) Spectrometer (12)