OPTICAL FIBER AND OPTICAL TRANSMISSION LINE

摘要

Optical fibers Fp, Fn, included in a light transmission path, are two-mode optical fibers for propagating an LPO1 mode component and an LP11 mode component contained in signal light, and a gradient d”Ä/d» of a mode dispersion ”Ä with respect to a wavelength » in a wavelength band of 1530 nm to 1625 nm is |0.5| ps/km/nm or less. Symbols of mode dispersions ”Ä of the optical fibers Fp, Fn are opposite to each other. The light transmission path can satisfactorily compensate the mode dispersion in a wide wavelength band.