US 12,068,787 B1
Laser signal transmission system
Xiaoming Fan, Shenzhen (CN); and Jiawei Fan, Shenzhen (CN)
Assigned to SHENZHEN ZHIYONG ELECTRONICS CO., LTD., Shenzhen (CN)
Filed by Shenzhen Zhiyong Electronics Co., Ltd., Shenzhen (CN)
Filed on Dec. 7, 2023, as Appl. No. 18/531,874.
Claims priority of application No. 202311026628.4 (CN), filed on Aug. 15, 2023.
Int. Cl. H04B 10/00 (2013.01); H04B 10/25 (2013.01); H04B 10/50 (2013.01); H04B 10/508 (2013.01)
CPC H04B 10/50597 (2013.01) [H04B 10/25 (2013.01); H04B 10/508 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A laser signal transmission system, comprising:
a modulation module, connected to an input voltage and configured to modulate the input voltage and output a first voltage, wherein an average value of the first voltage within a first duration is 0, and the first duration is greater than or equal to one modulation period;
a voltage-current conversion module, connected to the modulation module and configured to output a first current based on the first voltage;
an electro-optic conversion module, connected to the voltage-current conversion module and configured to output an optical signal corresponding to the first current, wherein the optical signal is transmitted over an analog optical fiber;
an optic-electro conversion module, configured to receive the optical signal from the analog optical fiber and output a second voltage based on the optical signal; and
a control module, connected to the optic-electro conversion module and configured to determine an average value of the second voltage and determine an electro-optic conversion coefficient of the electro-optic conversion module based on the average value of the second voltage;
wherein the optic-electro conversion module is further configured to output a third voltage corresponding to the optical signal, and amplify the third voltage and output the second voltage; and
the control module is further configured to receive a reference voltage, and adjust a magnification at which the third voltage is amplified by the optic-electro conversion module until it is determined that the reference voltage is equal to the average value of the second voltage.