Transmission method and transmission system of DC reference signal

Abstract

The invention discloses a transmission method and transmission system for direct current reference signals. The transmission system comprises an electro-optical conversion module, a transmission optical fiber and a photoelectric conversion module; the electro-optical conversion module is used for converting multiple input direct current reference signals into multiple direct current reference optical signals with different wavelengths and adjusting optical powers of the output direct current reference optical signals according to the current or voltage strengths of the multiple direct currentreference signals to enable the optical powers to be capable of reflecting the current or voltage strengths of the input direct current reference signals; one end of the transmission optical fiber isconnected with the electro-optical conversion module and used for transmitting the multiple direct current reference optical signals with different wavelengths simultaneously without mutual interference; and the photoelectric conversion module is connected with the other end of the transmission optical fiber and used for converting the multiple direct current reference optical signals with different wavelengths into optical currents and outputting the optical currents. The transmission line integration level is significantly increased while the backward compatibility is achieved and the signalquality is guaranteed, high-precision and high-integration level transmission of the multiple direct current reference signals is achieved, and transmission has the excellent stability.

Description

technical field

[0001] The disclosure belongs to the technical field of automatic control and optical communication, and relates to a transmission method and a transmission system of a DC reference signal. Background technique

[0002] DC reference signals are fundamental resources in analog circuits. In fields such as precision measurement that have strict requirements on signal accuracy and noise suppression, a high-precision DC reference signal plays a key role. In precision measurement devices, the DC reference signal can be generated directly in the device, or can be input through an external DC reference signal source. Directly generating a DC reference signal in the device is limited by volume, power consumption, design complexity, etc., and it is often difficult to achieve high precision. Precision measurement devices may also be installed in cryogenic chambers, vacuum chambers, etc., and it is impossible to integrate a DC reference signal source inside. Therefore,...

Images