Optical circuit board

Abstract

An optical circuit board makes it possible to align positions of a core of an optical waveguide and a core of the optical component in a height direction with high accuracy, and to reduce transmission loss, when an optical component is mounted. According to the present disclosure, an optical circuit board includes a wiring board including an upper surface having a first mounting region and a second mounting region adjacent to the first mounting region and an optical waveguide located in the first mounting region. The optical waveguide includes first lower cladding, a first core, and first upper cladding from a side at which an upper surface of the wiring board is provided. The first lower cladding includes a first portion located in the first mounting region and a second portion located in the second mounting region. The first portion and the second portion have the same height.

Dependencies are inferred from the claim text.