OPTICAL WAVEGUIDE ELEMENT, PHOTORECEPTOR DEVICE, OPTICAL COMMUNICATION DEVICE, OPTICAL MODULATOR, OPTICAL RESONATOR, AND MANUFACTURING METHOD FOR OPTICAL WAVEGUIDE ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide a low-loss, low-cost optical waveguide element capable of compensating for polarization mode dispersion.SOLUTION: An optical waveguide element 10 includes a core 12 and a cladding 11 made of SiO. Designating a group refractive index of an i-th waveguide counting from a light incident face 12a1 of the core 12 for TE0 polarized light as n, and a group refractive index of the i-th waveguide for TM0 polarized light as n, a length L[m] of the i-th waveguide is set to satisfy a predetermined relationship.SELECTED DRAWING: Figure 1