OPTICAL FIBER, OPTICAL FIBER COMPONENT, AND OPTICAL TRANSMISSION METHOD

摘要

PROBLEM TO BE SOLVED: To provide an optical fiber and an optical fiber component which can efficiently induce a nonlinear phenomenon. SOLUTION: A core 1 and a clad 5 which covers the outer circumferential side of the core 1 are provided and the center part of the core 1 is doped with GeO2 of >=1.0 in specific refractive index difference from the clad 5. The clad 5 is provided with a 1st clad 2 which covers the outer circumferential side of the core 1 adjacently to the core, a 2nd clad 3 which covers the outer circumferential side of the 1st clad 2 adjacently to the 1st clad 2, and a 3rd clad 4. which covers the outer circumferential side of the 2nd clad 3 adjacently to the 2nd clad 3. The refractive index of the 2nd clad 3 is made smaller than that of the 1st clad 2 and also smaller than that of the 3rd clad 4; and zero- dispersion wavelength is obtained in the range of wavelengths 1.4 to 1.65μm and propagation of the zero-dispersion wavelength in single mode is enabled.