OPTICAL WAVEGUIDE STRUCTURE

PROBLEM TO BE SOLVED: To obtain an optical waveguide structure capable of being made small by providing a slant reflecting face at least on one end part of the optical waveguide member buried in a base plate, and setting at least either of the incidental light or the out-going light in the direction crossing the optical axis direction of the optical waveguide member. SOLUTION: A core member 2 buried in a clad base plate 1 and the interior of the clad base plate 1 is provided. The side end face of the core member 2 is exposed on the side of the clad base plate 1, the other end face is exposed to the opening part forming the upper face on the surface side of the clad base plate 1 and a hollow part 3, and a slant reflecting face 4 is provided on the end face. Hereat, incidental light radiated in the vertical direction from the upper side through the opening part and the hollow part 3 is reflected on the reflecting face 4 in the axial direction of the core member 2, and it can be taken out from the end face exposed on the side of the clad base plate 1. Consequently, alignment of the input light and the optical waveguide can be performed on the surface of the clad base plate 1, and the aligning work can be easily performed.