Optical wireless mesh network communication system

An optical wireless mesh network communication system;

• comprising
• an optical wireless communication transceiver having an optical transmitter and an optical receiver and an optical fiber cable or a coaxial cable for transmitting signals received by the optical receiver to the optical transmitter in each node;
• the optical wireless mesh network communication system connects n+1 nodes (n is a positive integer greater than or equal to 2, hereinafter the same in the claims) in the network;
• wherein
• the optical wireless communication transceiver in each of the nodes is capable of communicating with the optical wireless communication transceiver in the correspondent node if the correspondent node satisfies conditions that (1) the correspondent node is within a predetermined straight-line distance for optical communication, (2) there is no obstacle blocking or absorbing light on the way, and (3) both the optical transmitter and the optical receiver are active;
• the optical wireless communication transceiver in each of the nodes is capable of simultaneously transmitting with a wide angle of transmitted light to 3/5 or more optical wireless communication transceivers in the other n nodes and simultaneously receiving a wide angle of transmitted light from 3/5 or more optical wireless communication transceivers in the other n nodes when its own node and all of the other n nodes satisfy the conditions of (1) to (3);
• in each of the nodes, the optical wireless communication transceiver includes a controller for format conversion of the input signal to a communication signal according to the network when an input signal is input from the input apparatus in a node to which the input apparatus is connected, and a controller for format conversion of a communication signal relating to the network to the output signal when the output apparatus outputs an output signal from the optical wireless communication transceiver to the output apparatus in a node to which the output apparatus is connected;
• the optical receiver having a photodiode (hereinafter also referred to as “PD” in the claims), a resistor, and a capacitor connected on the downstream side in the electric current flow direction of the PD;
• wherein the optical receiver has a peak of a light receiving wavelength set to a wavelength shorter than the wavelength of ambient light, a function of performing a multiplication function in response to the energy of an incident photon unit, a function of not accepting the next photon until one photon enters and the multiplication function is restored, and when a voltage is applied between the terminals of the PD, a free carrier in the PD is activated, when the photon enters the PD in such a state, electrons are multiplied in the PD, electric current by the multiplied electrons is output;
• wherein the optical receiver which is a photon detection receiver having a device is capable to detect an alternating electric current component corresponding to the acceleration fluctuation of the photon passing through the capacitor from the output current as a signal is used.