Optical coupling apparatus, method for packaging optical coupling apparatus, optical module, and communications device

An optical coupling apparatus, comprising:

• an optical fiber component, comprising a plurality of optical fibers and an optical fiber fixing block, wherein the plurality of optical fibers are fixed to the optical fiber fixing block, a first end face is disposed on the optical fiber fixing block, at least some of the optical fibers comprise plug ends, and the plug ends protrude from the first end face;
• and
• an optical write waveguide block, comprising a main body and a plurality of waveguides corresponding to fiber cores of the plurality of optical fibers, wherein the plurality of waveguides are disposed in the main body, a second end face is disposed on the main body, coupling holes that are in a one-to-one correspondence with the plug ends are disposed on the second end face in a recessed manner, and the coupling holes are formed when ends of the waveguides are recessed from the second end face;
• and
• when the second end face and the first end face are connected to each other, the plug ends of the at least some of the optical fibers are inserted into the coupling holes in a one-to-one correspondence manner;
• wherein a mode field diameter of a side that is of the waveguide in the optical write waveguide block and that is configured to be coupled to the optical fiber is equal to a mode field diameter of the optical fiber.

An optical coupling apparatus, comprising:

• an optical fiber component, comprising a plurality of optical fibers and an optical fiber fixing block, wherein the plurality of optical fibers are fixed to the optical fiber fixing block, a first end face is disposed on the optical fiber fixing block, at least some of the optical fibers comprise plug ends, and the plug ends protrude from the first end face;
• and
• an optical write waveguide block, comprising a main body and a plurality of waveguides corresponding to fiber cores of the plurality of optical fibers, wherein the plurality of waveguides are disposed in the main body, a second end face is disposed on the main body, coupling holes that are in a one-to-one correspondence with the plug ends are disposed on the second end face in a recessed manner, and the coupling holes are formed when ends of the waveguides are recessed from the second end face;
• and
• when the second end face and the first end face are connected to each other, the plug ends of the at least some of the optical fibers are inserted into the coupling holes in a one-to-one correspondence manner;
• wherein a length that is of the plug end and that protrudes from the first end face is less than 1 millimeter.

An optical coupling apparatus, comprising:

• an optical fiber component, comprising a plurality of optical fibers and an optical fiber fixing block, wherein the plurality of optical fibers are fixed to the optical fiber fixing block, a first end face is disposed on the optical fiber fixing block, at least some of the optical fibers comprise plug ends, and the plug ends protrude from the first end face;
• and
• an optical write waveguide block, comprising a main body and a plurality of waveguides corresponding to fiber cores of the plurality of optical fibers, wherein the plurality of waveguides are disposed in the main body, a second end face is disposed on the main body, coupling holes that are in a one-to-one correspondence with the plug ends are disposed on the second end face in a recessed manner, and the coupling holes are formed when ends of the waveguides are recessed from the second end face;
• and
• when the second end face and the first end face are connected to each other, the plug ends of the at least some of the optical fibers are inserted into the coupling holes in a one-to-one correspondence manner;
• wherein a quantity of waveguides forming one coupling hole is the same as a quantity of fiber cores of the optical fiber inserted into the coupling hole;
• wherein the plurality of optical fibers are single-core optical fibers, multi-core optical fibers, or a combination of single-core optical fibers and multi-core optical fibers;
• and
• wherein the plurality of optical fibers are arranged in a two-dimensional array in the optical fiber fixing block.

An optical module, wherein the optical module comprises an optical chip and an optical coupling apparatus, wherein the optical coupling apparatus comprising:

• an optical fiber component, comprising a plurality of optical fibers and an optical fiber fixing block, wherein the plurality of optical fibers are fixed to the optical fiber fixing block, a first end face is disposed on the optical fiber fixing block, at least some of the optical fibers comprise plug ends, and the plug ends protrude from the first end face;
• and
• an optical write waveguide block, comprising a main body and a plurality of waveguides corresponding to fiber cores of the plurality of optical fibers, wherein the plurality of waveguides are disposed in the main body, a second end face is disposed on the main body, coupling holes that are in a one-to-one correspondence with the plug ends are disposed on the second end face in a recessed manner, and the coupling holes are formed when ends of the waveguides are recessed from the second end face;
• and
• when the second end face and the first end face are connected to each other, the plug ends of the at least some of the optical fibers are inserted into the coupling holes in a one-to-one correspondence manner;
• wherein a mode field diameter of a side that is of the waveguide in the optical write waveguide block and that is configured to be coupled to the optical chip is equal to an out-light mode field diameter of the optical chip.

An optical module, wherein the optical module comprises an optical chip and an optical coupling apparatus, wherein the optical coupling apparatus comprising:

• an optical fiber component, comprising a plurality of optical fibers and an optical fiber fixing block, wherein the plurality of optical fibers are fixed to the optical fiber fixing block, a first end face is disposed on the optical fiber fixing block, at least some of the optical fibers comprise plug ends, and the plug ends protrude from the first end face;
• and
• an optical write waveguide block, comprising a main body and a plurality of waveguides corresponding to fiber cores of the plurality of optical fibers, wherein the plurality of waveguides are disposed in the main body, a second end face is disposed on the main body, coupling holes that are in a one-to-one correspondence with the plug ends are disposed on the second end face in a recessed manner, and the coupling holes are formed when ends of the waveguides are recessed from the second end face;
• and
• when the second end face and the first end face are connected to each other, the plug ends of the at least some of the optical fibers are inserted into the coupling holes in a one-to-one correspondence manner;
• wherein ends that are of the plurality of waveguides in the optical write waveguide block and that are located on the coupling face are arranged in a linear or two-dimensional manner, and a diameter of the waveguide decreases gradually in a direction from the second end face to the coupling face.