Optical module for serial port communication

Abstract

The invention discloses an optical module for serial port communication, which comprises an optical module body, a PCB, a level shifter and an amplifier. The optical module body comprises the PCB, a connecting insertion piece arranged on one side of the upper end of the PCB, the level shifter arranged on one side of the connecting insertion piece, the amplifier arranged on one side of the level shifter, a detector arranged on one side of the amplifier and a laser arranged on one side of the detector, a driver arranged on one side of the laser, and a single chip microcomputer arranged in the middle of the upper end of the PCB. The optical module has the advantages that by arranging the level translator, the detector and the amplifier, the optical module can achieve detection and amplification of weak signals, meets communication transmission control during long-distance optical fiber transmission of a small signal controller, can be directly connected with serial ports such as RS232CPLDFPGA for communication, meanwhile achieves direct-current signal transmission, and is extremely low in power consumption, practical and economical.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an optical module for serial port communication. Background technique [0002] The serial interface is a device that can convert the parallel data characters received from the CPU into continuous serial data streams and send them out, and at the same time convert the received serial data streams into parallel data characters for the CPU. Generally, the circuit that completes this function is called a serial interface circuit. Among them, the optical module is often used to realize the transceiving conversion of the serial port data. [0003] However, the current optical modules are mainly designed for signal transmission with high signal strength, which leads to the fact that the optical modules cannot meet the communication transmission control of small signal controllers during long-distance optical fiber transmission, and cannot be directly connected to RS232\CP...

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Problems solved by technology

[0003] However, the current optical modules are mainly designed for signal transmission with high signal strength, which leads to the fact that the optical modules cannot meet the communication transmission control of small signal controllers during long-distance optical fiber transmission, and cannot be directly connected to RS232\CPLD\FPGA Wait for the serial port to communicate, and at the same time, the efficiency of the optical module is relatively large, which is not economical and practical

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