基于光纤的信号传输系统
By combining a high-frequency direct channel and a low-frequency closed-loop module, the problems of temperature drift and bandwidth maintenance in optical fiber signal transmission are solved, thereby improving the stability of signal transmission and reducing nonlinear errors in the high-frequency band.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN ZHIYONG ELECTRONICS CO LTD
- Filing Date
- 2023-02-09
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, it is impossible to simultaneously eliminate temperature drift and maintain a large signal transmission bandwidth when transmitting signals via optical fiber.
A combination of a high-frequency direct channel and a low-frequency closed-loop module is adopted. The high-frequency direct channel is used to filter high-frequency voltage signals, while the low-frequency closed-loop module is used to compare with the low-frequency feedback voltage signal that characterizes optical power and output a low-frequency error signal. The signal is then combined by a signal combining module. The laser emitting module converts the combined current signal into an optical signal and transmits it through optical fiber. The optical power detector and the optical power feedback amplification module form a low-frequency optical power feedback branch to stabilize the optical power of the laser emitting module.
It improves the low-frequency nonlinear error and temperature drift phenomenon of broadband analog signal transmission systems, and realizes stable transmission of high-frequency signals while maintaining a large signal transmission bandwidth.
Smart Images
Figure CN116112078B_ABST