1. Early development: Optocoupler technology first originated in the 1960s. The original optical coupler used fluorescent materials as the signal transmission medium to convert electrical signals into optical signals, and then converted the optical signals back into electrical signals to achieve electrical isolation.
2. Popularization and application: In the 1970s, with the advancement of semiconductor technology, optical couplers were further developed. Optocouplers using semiconductor materials such as LEDs and photodiodes are becoming widely used in a variety of electronic devices, especially those requiring high-voltage isolation or noise suppression.
3. Technical improvements: From the 1980s to the 1990s, the performance of optocouplers was significantly improved, including higher transmission rates, lower dark current, smaller package size, etc. These improvements enable optocouplers to better meet the needs of data communications and computer interfaces.
4. China-made process: As mentioned earlier, China began to develop optical couplers in the late 1960s. With the passage of time and the accumulation of technology, domestic optocouplers have gradually become competitive in performance and price, and have gained market recognition.
5. Modern applications: After entering the 21st century, with the trend of miniaturization and intelligence of electronic devices, optocouplers are also developing in the direction of higher integration, lower power consumption, and faster transmission speed. Modern optocouplers are widely used in power systems, industrial control, communication networks, medical equipment and many other fields.
