US20260135621
2026-05-14
Electricity
H04B10/6971
The patent application describes an advanced optical communication system utilizing an organic photoelectric conversion device. This device is capable of converting optical signals from a transmitter into electrical signals. A key component of the system is a demodulator that inputs these electrical signals into a trained artificial neural network, which then demodulates the signals based on the network's output. This approach aims to enhance the efficiency and accuracy of optical communication systems.
Traditional photoelectric conversion devices, such as silicon photodiodes, face limitations in sensitivity as pixel sizes decrease. Organic materials offer a promising alternative due to their high absorption coefficients and ability to selectively absorb specific wavelength regions. This capability allows them to potentially replace both photodiodes and color filters, improving sensitivity and integration in optical systems.
The receiver in this system includes an organic photoelectric conversion device and a demodulator. The device converts optical signals into electrical signals, which are then processed by a neural network for demodulation. The system can also include a signal-to-interference-and-noise ratio (SINR) estimator, which provides feedback to the transmitter to optimize signal quality. The organic device can handle various wavelength bands, including red, green, blue, infrared, and near-ultraviolet, using multiple active layers configured in two-dimensional or three-dimensional structures.
The system supports dynamic adjustments based on SINR feedback. The transmitter can pre-equalize signals and adjust equalization parameters based on SINR estimates received from the receiver. This adaptive approach enhances signal transmission quality and reliability. The method also includes modulation level adjustments for encoding and modulation depth adjustments for signal modulation, ensuring optimal performance across varying conditions.
The described optical communication system can be implemented in various forms, including mobile stations, base stations, and other communication devices. The flexibility of the organic photoelectric conversion device allows for diverse applications, potentially replacing traditional silicon-based systems. The detailed description emphasizes the adaptability and potential for high integration within existing and future optical communication infrastructures.