Optical relay device and signal transmission system

A signal transmission system, comprising a communication station and an optical relay device, wherein

• the optical relay device comprises a substrate, and a first transmission module and a second transmission module that are provided on the substrate, wherein
• the substrate has a first side and a second side opposite to each other in a direction perpendicular to the substrate;
• and
• the first transmission module and the second transmission module both comprise at least one light emitting unit and at least one light receiving unit, wherein the light emitting unit is configured to convert an electrical signal into an optical signal, the light receiving unit is configured to convert an optical signal into an electrical signal, the light emitting unit comprises at least one light emitter, and when the light emitting unit comprises at least two light emitters, the light emitters in the light emitting unit are connected in parallel;
• the light receiving unit comprises at least one light receiver, and when the light receiving unit comprises at least two light receivers, the light receivers in the light receiving unit are connected in parallel;
• wherein
• the light emitting unit in the first transmission module is provided on the first side of the substrate, and the light receiving unit in the first transmission module is provided on the second side of the substrate;
• the light emitting unit in the second transmission module is provided on the second side of the substrate, and the light receiving unit in the second transmission module is provided on the first side of the substrate;
• optical paths of light receiving units and optical paths of light emitting units are provided in one-to-one correspondence in the direction perpendicular to the substrate, and the light receiving unit and the light emitting unit that are corresponding to each other form a signal transmission channel;
• the communication station comprises a first communication station and a second communication station for sending and receiving an electrical signal;
• and
• the optical relay device relays the electrical signal output by the first communication station to the second communication station, and relays the electrical signal output by the second communication station to the first communication station,
• wherein
• the optical relay device further comprises:
• a first conductive layer, comprising a first power supply end and a plurality of interconnected first connection units connected to the first power supply end;
• and a second conductive layer, comprising a second power supply end and a plurality of interconnected second connection units connected to the second power supply end;
• wherein the light emitter is provided with a first pole and a second pole, the first pole of the light emitter in the light emitting unit is connected to the first connection unit, and the second pole of the light emitter in the light emitting unit is connected to the second connection unit;
• the light emitting units, the first connection units and the second connection units are in one-to-one correspondence in a connecting relationship;
• and the first conductive layer, the second conductive layer, and the light emitting unit correspondingly connected to the first conductive layer and the second conductive layer are provided on a same side of the substrate;
• or
• the optical relay device further comprises:
• a first conductive layer, comprising a plurality of first connection units arranged at intervals, wherein the first connection unit comprises a first power supply end;
• and a second conductive layer, comprising a plurality of second connection units arranged at intervals, wherein the second connection unit comprises a second power supply end;
• wherein the light emitter is provided with a first pole and a second pole, the first pole of the light emitter in the light emitting unit is connected to the first connection unit, and the second pole of the light emitter in the light emitting unit is connected to the second connection unit;
• the light emitting units, the first connection units and the second connection units are in one-to-one correspondence in a connecting relationship;
• and the first conductive layer, the second conductive layer, and the light emitting unit correspondingly connected to the first conductive layer and the second conductive layer are provided on a same side of the substrate.

A method for manufacturing an optical relay device, comprising:

• providing a substrate, wherein the substrate has a first side and a second side opposite to each other in a direction substantially perpendicular to the substrate;
• and
• forming a first transmission module and a second transmission module on the substrate;
• wherein the first transmission module and the second transmission module both comprises at least one light emitting unit and at least one light receiving unit, wherein the light emitting unit is configured to convert an electrical signal into an optical signal, the light receiving unit is configured to convert an optical signal into an electrical signal;
• the light emitting unit comprises at least one light emitter, and when the light emitting unit comprises at least two light emitters, the light emitters in the light emitting unit are connected in parallel;
• the light receiving unit comprises at least one light receiver, and when the light receiving unit comprises at least two light receivers, the light receivers in the light receiving unit are connected in parallel;
• wherein
• the light emitting unit in the first transmission module is provided on the first side of the substrate, and the light receiving unit in the first transmission module is provided on the second side of the substrate;
• and
• the light emitting unit in the second transmission module is provided on the second side of the substrate, and the light receiving unit in the second transmission module is provided on the first side of the substrate;
• and
• optical paths of light receiving units and optical paths of light emitting units are provided in one-to-one correspondence in the direction perpendicular to the substrate, and the light receiving unit and the light emitting unit that are corresponding to each other form a signal transmission channel,
• wherein
• the optical relay device further comprises:
• a first conductive layer, comprising a first power supply end and a plurality of interconnected first connection units connected to the first power supply end;
• and a second conductive layer, comprising a second power supply end and a plurality of interconnected second connection units connected to the second power supply end;
• wherein the light emitter is provided with a first pole and a second pole, the first pole of the light emitter in the light emitting unit is connected to the first connection unit, and the second pole of the light emitter in the light emitting unit is connected to the second connection unit;
• the light emitting units, the first connection units and the second connection units are in one-to-one correspondence in a connecting relationship;
• and the first conductive layer, the second conductive layer, and the light emitting unit correspondingly connected to the first conductive layer and the second conductive layer are provided on a same side of the substrate;
• or
• the optical relay device further comprises:
• a first conductive layer, comprising a plurality of first connection units arranged at intervals, wherein the first connection unit comprises a first power supply end;
• and a second conductive layer, comprising a plurality of second connection units arranged at intervals, wherein the second connection unit comprises a second power supply end;
• wherein the light emitter is provided with a first pole and a second pole, the first pole of the light emitter in the light emitting unit is connected to the first connection unit, and the second pole of the light emitter in the light emitting unit is connected to the second connection unit;
• the light emitting units, the first connection units and the second connection units are in one-to-one correspondence in a connecting relationship;
• and the first conductive layer, the second conductive layer, and the light emitting unit correspondingly connected to the first conductive layer and the second conductive layer are provided on a same side of the substrate.