Multi-beam resonance light energy-carrying communication system

[0031] Example one

[0032] As a method of energy propagation, light waves can realize safe, long-distance, and mobile wireless energy transmission; at the same time, as a method of information transmission, light waves can realize wireless energy-carrying communication (Simultaneous Wireless Information and Power Transfer, SWIPT). In the distributed optical resonance structure based on a single beam of light, the transmitter A and the receiver B are independent of each other in space. The transmitter A includes a gain medium and a retro-reflective structure R1, and the receiver B retro-reflective structure R2 and a photoelectric Converted PV panels, such as figure 1 Shown.

[0033] The retro-reflectors R1 and R2 in the receiver B can reflect the incident light back to the original path. When the gain medium is excited to generate a photon beam, the photon beam will oscillate back and forth between the retro-reflectors R1 and R2 to form a stable resonance beam. The retro reflector R1 may be a total reflection structure, and R2 may be a partial reflection structure. When the incident light hits R2, part of it will be returned to the original path and part of it will be transmitted out to form laser light. After the laser is received by the PV panel, it will be converted into electrical energy for power supply. The retro-reflective structure ensures that the receiver can move freely relative to the transmitter; at the same time, if the resonance light between the two retro-reflectors is blocked by foreign objects, the formation of the resonance light will be interrupted, ensuring the system itself and the safety of the system against foreign objects Sex.

[0034] The invention relates to a multi-beam resonance light energy-carrying communication system. On the basis of a single-beam distributed optical resonance structure, a device and structure for simultaneously outputting energy and information with multiple beams are added, and multiple beams of resonance light can be realized The energy and information are transmitted from the sender 1 to the receiver 2 at the same time. Such as figure 2 As shown, the system of the present invention includes a transmitting terminal 1 and a receiving terminal 2, and the transmitting terminal 1 includes a plurality of resonant optical transmitting modules 11. The resonant optical transmitting module 11 includes a signal generator 111, an amplifier 112, a biasing device 114, a DC power supply 113, a pump 115, and a transmitting antenna 116. The receiving end 2 includes a receiving antenna 26, a beam splitter 21, a photoelectric converter 22, and a splitter. Road module 23, demodulation module 24 and charging control module 25. Among them, the transmitting antenna 116 and the receiving antenna 26 constitute a distributed optical resonant cavity, and the transmitting antenna 116 includes retro-reflectors Rt1, Rt2...Rtn and a gain medium 117, which can form multiple resonant lights. The DC power supply 113 can control its output voltage or current according to the input signal. The receiving antenna 26 includes a retro reflector Rr.

[0035] The pump 115 of the sending end 1 can be driven by a DC power supply 113 plus a bias, or it can be driven by a controllable power supply 119 via a current distributor 120 and modulated by a modulator 121, such as Figure 4 Shown. The current distributor 120 distributes the current of the controllable power supply 119 to the resonant light transmitting modules 11 in proportion, and the current sent to each module can be modulated by the modulator 121 to load information, and finally realize the energy and information of each resonant light transmitting module 11 Collaborate to send.

[0036] The functions and modules of the modulator 121 are the same as those of the signal generator 111, amplifier 112 and bias device 114, such as Figure 5 As shown, the modulator 121 can load the modulated signal to the current wave for coordinated transmission of energy and information.

[0037] In each resonant optical transmitting module 11 of the system transmitting end 1, the signal generator 111 generates a signal, which is amplified by the amplifier 112, then biases the DC power supply 113, and the current after the bias device 114 drives the pump 115, The gain medium 117 is excited to work. According to the distributed optical resonance structure, the gain medium 117 absorbs the energy emitted by the pump 115 to form spontaneous radiation. The radiated photons form resonance between the retroreflector R1 and the retroreflector R2, and excite the gain medium 117 on this optical path to generate more photons. The light emitted by each resonant light transmitting module 11 can be directly transmitted.

[0038] Preferably, the amplifier 112 and the bias of the present invention can be arbitrarily set reasonable values.

[0039] Preferably, the energy-carrying communication system with multiple beams of resonant light disclosed in the present invention may also include a situation in which any one beam is only used for energy transmission or only for communication. Preferably, when it is only used for communication, the sending end 1 may use bias or no bias.

[0040] At the receiving end 2 of the system, Rr is a partially transmissive retroreflector, part of the resonant light will be transmitted out and output in the form of laser light. The formed laser light is separated by the laser beam splitter 21 according to different wavelengths and irradiated on different or the same photoelectric converter 22. Since the current distributed by the current distributor 120 to each resonant light transmitting module 11 will vary according to the modulation of the modulator 121, the output laser intensity will vary slightly accordingly. The photoelectric converter 22 converts the laser light into a varying current, and the output current includes a DC component and an AC component. The shunt module 23 separates the DC component and the AC component of the output current of the photovoltaic panel, and outputs it in two ways: one output modulates the changed signal, which is sent to the demodulator for demodulation to recover the transmitted information; the other output The direct current provides energy for the subsequent charging/utilizing circuit, such as charging the battery through the charging control module 25. The multiple photoelectric converters 22 can be output to the same charging control module 25 to provide energy for the subsequent charging/power consumption circuit.

[0041] The resonant light is partially transmitted through the Rr to form laser light, and this part of the laser light contains multiple frequency components transmitted from the resonant light transmitting modules 11 of the transmitting end 1. The laser can pass through the beam splitter 21 to separate the light of different components, and form multiple beams of single frequency component after the separation. The beam splitter 21 is like image 3 Shown. The prism can separate a mixed photon beam into multiple photon beams with a single frequency component according to a certain angle. Each photon beam hits the specific photoelectric converter 22 corresponding to the frequency light and can be converted into a signal-carrying current, and then the splitting module 23 realizes the separation of energy and information signal.

[0042] The transmitting end 1 of the system of the present invention can simultaneously emit multiple beams of resonant light, each of which can carry energy and information at the same time, or it can only be used for power supply or communication; the position of the receiving end 2 can be moved flexibly. The transmission of information and information will not be suspended. After each beam of light reaches the receiving end 2, the light with different frequency components will be separated by the beam splitter 21 at the receiving end 2, and received by different or the same photoelectric converter 22. Then enter the splitter module 23, which can be used for charging and information decoding respectively, which greatly enhances the practicability of the system, realizes the simultaneous communication of multiple beams, expands the communication capacity, and realizes Wi-Fi-like energy and information coordination At the same time of transmission, the system capacity is increased to better meet user needs.

[0043] Example two

[0044] This embodiment provides a multi-beam resonant light energy-carrying communication system. The system structure is basically the same as the structure of the multi-beam resonant light energy-carrying communication system described in the first embodiment. The difference lies in:

[0045] The light emitted by each resonant light sending module 11 can be directly sent out and can be combined into a light beam by the laser beam combiner 118 for sending.

[0046] In each resonant light transmitting module 11, the frequency component of the resonant light generated by the excitation of the gain medium 117 is single, and the multiple light beams generated by each module can be integrated into one light beam through the beam combiner 118. Such as Image 6 As shown, the beam combiner 118 is arranged at the transmission intersection of the transmission antenna 116 of each resonant optical transmission module 11. The incident light of each single frequency component passes through the prism and is integrated at a certain angle into a light output containing multiple frequency components. The synthesized light reaches the receiving end 2 after passing through the free space.

[0047] If the beam combiner 118 is used in a multi-beam resonant light charging system that uses a signal generating device and a biaser, the system structure is as follows Figure 7 As shown; if the beam combiner 118 is used in the multi-beam resonant light charging system using the current divider 120 and the modulator 121, the system structure can be as Figure 8 Shown. Both can realize the multi-beam resonance light energy-carrying communication as described above.