Optical fiber transmission device and manufacturing method thereof

A manufacturing method of an optical fiber transmission device, comprising:

• forming a protruding structure on a substrate;
• disposing a photonic integrated circuit on an area of the substrate, wherein the protruding structure is located at an interface between the substrate and an edge of the photonic integrated circuit;
• sleeving an optical fiber by a ferrule to form an optical fiber assembly, wherein a fixing member sleeves the optical fiber assembly;
• grinding one end of the optical fiber assembly that faces the photonic integrated circuit, so that a ground end face is formed on the optical fiber assembly, and the ground end face is parallel to a horizontal plane of the photonic integrated circuit;
• optically aligning the optical fiber with the photonic integrated circuit;
• and
• configuring the protruding structure of the substrate to abut against the ferrule to limit a position of the optical fiber assembly in a vertical direction of the substrate to serve as a stopper for the optical fiber assembly in the vertical direction, wherein the optical fiber assembly is optically coupled with the photonic integrated circuit in an extending direction of the optical fiber assembly, and the extending direction forms an acute angle with the horizontal plane of the photonic integrated circuit.

A manufacturing method of an optical fiber transmission device, comprising:

• forming a protruding structure on a substrate;
• disposing a photonic integrated circuit on an area of the substrate, wherein the protruding structure is located at an interface between the substrate and an edge of the photonic integrated circuit;
• positioning an optical fiber assembly in at least one fixing member, wherein the fixing member sleeves the optical fiber assembly, and the optical fiber assembly comprises an optical fiber and a ferrule that sleeves the optical fiber;
• synchronously grinding the fixing member and one end of the optical fiber assembly that faces the photonic integrated circuit, so that each of the fixing member and the optical fiber assembly forms a ground end face, wherein the ground end face is parallel to a horizontal plane of the photonic integrated circuit;
• optically aligning the optical fiber with the photonic integrated circuit;
• and
• disposing the fixing member on the substrate to configure the protruding structure of the substrate to abut against the ferrule to limit a position of the optical fiber assembly in a vertical direction of the substrate to serve as a stopper for the optical fiber assembly in the vertical direction, wherein the optical fiber assembly is optically coupled with the photonic integrated circuit in an extending direction of the optical fiber assembly, and the extending direction forms an acute angle with the horizontal plane of the photonic integrated circuit.