Optical module and optical connector cable

An optical module comprising:

• a substrate internally including a glass cloth constituted of glass threads serving as weft and warp and including an outer edge when viewed in a thickness direction of the substrate having a rectangular shape defined by a pair of first side surfaces in a predetermined direction and a pair of second side surfaces in a direction orthogonal to the predetermined direction;
• an optical element mounted on the substrate;
• and
• an optical coupling module configured to be optically coupled to the optical element,
• wherein the weft extends along the first side surfaces when viewed in the thickness direction of the substrate,
• the warp extends along the second side surfaces when viewed in the thickness direction of the substrate,
• a cavity recessed from a first main surface of the substrate toward a second main surface of the substrate so as to include a bottom portion is formed in the substrate, and at least a part of the optical coupling module is accommodated in the cavity, and
• a side surface of the cavity includes an inclined region inclined with respect to an extension direction of the weft and an extension direction of the warp when viewed in the thickness direction of the substrate.

An optical module comprising:

• a substrate internally including a glass cloth constituted of glass threads serving as weft and warp and including an outer edge when viewed in a thickness direction of the substrate having a rectangular shape defined by a pair of first side surfaces in a predetermined direction and a pair of second side surfaces in a direction orthogonal to the predetermined direction;
• a plurality of optical elements mounted on the substrate;
• and
• a plurality of optical coupling modules configured to be optically coupled to the plurality of respective optical elements,
• wherein the weft is inclined with respect to the first side surfaces and the second side surfaces when viewed in the thickness direction of the substrate,
• the warp is inclined with respect to the first side surfaces and the second side surfaces when viewed in the thickness direction of the substrate,
• a plurality of cavities recessed from a first main surface of the substrate toward a second main surface of the substrate so as to each include a bottom portion are formed in the substrate, and each of the plurality of optical coupling modules is accommodated in each of the plurality of cavities, and
• a side surface of each of the plurality of cavities includes an inclined region inclined with respect to an extension direction of the weft and an extension direction of the warp when viewed in the thickness direction of the substrate.