Optical-sensing demodulation module and optical-sensing system

An optical-sensing demodulation module, wherein the optical-sensing demodulation module comprises:

• a package housing, comprising a first side surface and a second side surface arranged oppositely to each other, wherein the first side surface is provided with a first fiber optic interface and a second fiber optic interface, and the second side surface is provided with an electrical interface;
• a functional circuit, disposed inside the package housing and closer to the second side surface than to the first side surface, wherein the functional circuit is connected to the electrical interface;
• an optical receiving assembly, inside the package housing and closer to the first side surface than to the second side surface, wherein the optical receiving assembly is connected to the first optical fiber interface and the functional circuit, and configured to receive an optical signal input at the first fiber optic interface, convert the optical signal into an electrical signal and send the electrical signal to the functional circuit;
• and
• an optical transmitting assembly, inside the package housing and closer to the first side surface than to the second side surface, wherein the optical transmitting assembly is connected to the second optical fiber interface and the functional circuit, and configured to receive an electrical signal input from the functional circuit, convert the electrical signal into an optical signal and send the optical signal to the second fiber optic interface,
• wherein the optical receiving assembly is spaced apart from the optical transmitting assembly along a direction from the first fiber optic interface toward the second fiber optic interface, and both the optical receiving assembly and the optical transmitting assembly are spaced apart from the functional circuit along a direction from the first side surface toward the second side surface;
• wherein the optical transmitting assembly comprises:
• a light-emitting element, connected with the second fiber optic interface,
• a driving chip, connected with the light-emitting element, and
• a temperature-control chip, connected with the light-emitting element;
• and
• wherein the functional circuit comprises:
• a control chip, connected to the electrical interface, the driving chip, and the temperature-control chip;
• wherein the optical receiving assembly comprises:
• a photodetector chip, connected with the first fiber optic interface,
• an amplifying circuit, connected with the photodetector chip, and
• a digital-to-analog conversion chip, connected to the amplifying circuit;
• and
• wherein the functional circuit comprises:
• a communication chip, connected with the electrical interface and the digital-to-analog conversion chip, and
• a collection chip, connected to the electrical interface and the digital-to-analog conversion chip.