Optical connector, optical connector connecting structure, and optical packaging circuit

An optical connector connecting structure comprising:

• a first ferrule including a first end surface provided with optical fiber insertion holes into which optical fibers are inserted, and with a pair of guide pin insertion holes into which a pair of guide pins are inserted;
• a plate-shaped lens holding member bonded to the first end surface of the first ferrule via a refractive index matching adhesive layer;
• a second optical connector disposed to be opposed to the first end surface of the first ferrule;
• and
• a spacer including a light guide portion disposed between the lens holding member and the second optical connector, the light guide portion being configured to allow light to pass between the lens holding member and the second optical connector,
• wherein the lens holding member includes a plate-shaped member main body and GRIN lenses provided on the member main body, and
• wherein the GRIN lenses are aligned with an end surface of the optical fibers inserted into the optical fiber insertion holes.

An optical packaging circuit comprising:

• a refrigerant tank containing refrigerant;
• and
• an electronic component, the electronic component being immersed in the refrigerant contained in the refrigerant tank,
• wherein an optical connector to be connected to the electronic component includes:
• a first ferrule including a first end surface provided with optical fiber insertion holes into which the optical fibers are inserted, and with a pair of guide pin insertion holes into which a pair of guide pins are inserted;
• and
• a plate-shaped lens holding member bonded to the first end surface of the first ferrule via a refractive index matching adhesive layer,
• wherein the lens holding member includes a member main body and GRIN lenses provided on the member main body, and
• wherein the GRIN lenses are aligned with end surfaces of the optical fibers inserted into the optical fiber insertion holes.