NON-LINEAR OPTICAL FIBER, OPTICAL FIBER COIL, AND WAVELENGTH CONVERTER

摘要

A non-linear optical fiber capable of producing non-linear optical phenomena at high efficiency, an optical fiber coil composed of coiled non-linear optical fibers, and a wavelength converter provided with the non-linear optical fiber. The non-linear optical fiber in particular has characteristics for input light of a predetermined wavelength, which include a modal field diameter of 5 mu m or less, a polarization dispersion of 1 ps/km<1/2> or a constant plane of polarization, a zero-dispersion wavelength of 1.5 mu m to 1.6 mu m, a cutoff wavelength of 1.4 mu m to 1.7 mu m for a fiber length of 2 m, a transmission loss of 3 dB/km or less, and a non-linear coefficient of 10/W/km or higher. With this configuration the non-linear optical fiber can generate highly efficiently desired converted light by the non-linear phenomena.