Optical communication method, transmitting optical module and optical communication architecture

Abstract

The application discloses an optical communication method, a transmitting optical module and an optical communication architecture, and relates to the technical field of communication. A specific implementation of the method comprises the following steps: converting an electrical signal provided by a transmitting device into an optical signal; filtering and condensing the optical signal to obtain an optical signal with a half-wave width less than a preset threshold and an angle of divergence less than a first threshold; wherein the filtered and condensed optical signal is used for optical fiber transmission and is converted into an electrical signal to be provided to a receiving device. The implementation reduces the loss and dispersion of a transmission light source in long-distance transmission, and improves the efficiency and practicability of optical communication.

Description

Technical Field

[0001] This invention relates to the field of computer technology, and in particular to an optical communication method, a transmitting optical module, and an optical communication architecture. Background Technology

[0002] With the continuous development and application of AI technology, data transmission bandwidth is constantly expanding, and optical communication technology is being used more and more widely in data transmission. However, existing optical communication technologies have the following problems: In the application and communication transmission of large AI models, near-infrared light is generally used as the transmission light source, which has high power consumption and cost; while visible light is used as the transmission light source, but its wavelength range and scattering angle are large, making it unsuitable for long-distance communication transmission; in addition, both laser and visible light are prone to loss and dispersion in long-distance transmission, which leads to reduced efficiency and poor practicality of optical communication. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide an optical communication method, a transmitting optical module, and an optical communication architecture, which can reduce the loss and dispersion of the transmitting light source in long-distance transmission and improve the efficiency and practicality of optical communication.

[0004] To achieve the above objectives, according to one aspect of the present invention, an optical communication method is provided, comprising: Convert the electrical signal provided by the transmitting device into an optical signal; The optical signal is filtered and focused to obtain an optical signal with a wavelength less than a preset half-width threshold and a divergence angle less than a first threshold. The filtered and focused optical signal is used for optical fiber transmission and is converted into an electrical signal for use with the receiving device.

[0005] Optionally, converting the electrical signal provided by the transmitting device into an optical signal includes: The electrical signal provided by the transmitting device is converted into a visible blue light signal, and the switching frequency of the blue light signal is greater than the second threshold.

[0006] Secondly, embodiments of the present invention provide a transmitting optical module, comprising: The light-emitting unit is used to convert the electrical signals provided by the transmitting device into optical signals; A filtering unit is disposed after the light-emitting unit or the light-concentrating unit, and is used to filter the light signal obtained by the light-emitting unit or the light-concentrating unit to obtain a light signal that is less than a preset half-wavelength threshold. A focusing unit is disposed after a filtering unit or a light-emitting unit, used to focus the light signal obtained by the filtering unit or the light-emitting unit to obtain a light signal with a divergence angle less than a first threshold. The fiber optic interface is used to provide optical signals, which have been filtered and focused and are less than a preset half-wavelength threshold and have a divergence angle less than a first threshold, to the optical fiber for transmission.

[0007] Optionally, the light-emitting unit is used to receive electrical signals and convert them into optical signals, including: the light-emitting unit is used to convert the electrical signals provided by the transmitting device into visible blue light signals, wherein the switching frequency of the blue light signals is greater than a second threshold.

[0008] Optionally, the light-emitting unit includes: The electrode layer is used to convert the electrical signals provided by the transmitting device into electrons and holes, and to transport the electrons and holes to the light-emitting layer through the epitaxial layer. The light-emitting layer is used to recombine electrons and holes, and releases the energy generated by the recombination of electrons and holes in the form of light signals. Epitaxial layers are used to provide transport channels for electrons and holes; The substrate is used to transmit the light signal emitted by the light-emitting layer to the optical fiber interface.

[0009] Optionally, the light-concentrating unit is configured to have a plurality of convex lens arrays; the convex lens arrays have a planar side that contacts the light-emitting unit and a corresponding convex side.

[0010] Optionally, the filtering unit is configured as a pigment array coated on the planar side or convex side of the convex lens array, wherein the position of the pigment in the pigment array corresponds one-to-one with the position of the convex lens in the convex lens array.

[0011] Thirdly, embodiments of the present invention provide an optical communication architecture, including: The transmitting optical module is used to convert the electrical signal provided by the transmitting device into an optical signal; to filter and focus the optical signal to obtain an optical signal with a wavelength less than a preset half-width threshold and a divergence angle less than a first threshold. Optical fiber is used to transmit filtered and focused optical signals; The receiving optical module is used to convert optical signals transmitted through optical fibers into electrical signals and provide them to the receiving device.

[0012] Optionally, the transmitting optical module is used to convert the electrical signal provided by the transmitting device into an optical signal, including: the transmitting optical module is used to convert the electrical signal provided by the transmitting device into a blue light signal of visible light, wherein the switching frequency of the blue light signal is greater than a second threshold.

[0013] Optionally, the receiving optical module is also used to: filter and focus the optical signal transmitted through the optical fiber again before converting the optical signal transmitted through the optical fiber into an electrical signal.

[0014] One embodiment of the above invention has the following advantages or beneficial effects: by converting the electrical signal provided by the transmitting device into an optical signal and filtering and focusing the optical signal, the energy loss and dispersion of the transmission light source can be reduced. Especially when visible light is used as the transmission light source, its wavelength range and divergence angle are large, making it impossible to enter the optical fiber path or perform long-distance transmission. By narrowing the spectrum of the visible light signal through filtering and narrowing the divergence angle of the visible light signal through focusing, visible light can be used as a transmission light source for long-distance communication. Therefore, through the optical communication method, transmitting optical module, and optical communication architecture of the above embodiments, the loss and dispersion of the transmission light source in long-distance transmission can be reduced, improving the efficiency and practicality of optical communication.

[0015] The further effects of the aforementioned unconventional alternative methods will be explained below in conjunction with specific implementation methods. Attached Figure Description

[0016] The accompanying drawings are provided to better understand the invention and are not intended to unduly limit the scope of the invention. Wherein: Figure 1 This is a schematic diagram of the main flow of an optical communication method provided in an embodiment of the present invention; Figure 2 This is a flowchart illustrating an optical communication method provided in another embodiment of the present invention; Figure 3 This is a schematic diagram of the architecture of a prior art optical communication method provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the connection between an optical module and an optical fiber provided in one embodiment of the present invention; Figure 5 This is a schematic diagram comparing the light divergence angles of visible light and near-infrared light according to an embodiment of the present invention; Figure 6 This is a schematic diagram of a microlens array provided in one embodiment of the present invention; Figure 7 This is a schematic diagram showing the comparison before and after light concentration provided in one embodiment of the present invention; Figure 8 This is a schematic diagram comparing the spectra of visible light and near-infrared light according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the spectral distribution of a micron-sized light-emitting diode provided in one embodiment of the present invention; Figure 10 This is a schematic diagram of a convex lens array coated with a blue pigment array according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the filtered optical signal spectrum provided in one embodiment of the present invention; Figure 12This is a schematic diagram of the main modules of a transmitting optical module provided in one embodiment of the present invention; Figure 13 This is a schematic diagram of the diode light-emitting principle provided in one embodiment of the present invention; Figure 14 This is a schematic diagram of the main modules of an optical communication architecture provided in one embodiment of the present invention.

[0017] Reference numerals: 10-electronic chip; 20-data transmission circuit; 1201-light emission unit; 1202-filtering unit; 1203-focusing unit; 1204-fiber optic interface; 1205-detection unit; 30-fiber optic cable. Detailed Implementation

[0018] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention, including various details to aid understanding. These details should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0019] In order to accurately describe the technical content of this invention, the terms used in this specification are explained or defined as follows: 1) Semiconductor PN junction: A PN junction is formed by fabricating P-type (hole-dominant) and N-type (electron-dominant) semiconductor materials on the same crystal using a special process. Diffusion and recombination occur near this interface due to the difference in carrier concentration, creating a built-in electric field and generating a potential barrier. The PN junction is the basic structural unit of semiconductor devices such as diodes.

[0020] 2) Laser Secondary Light (LD): Used in optical communication to emit laser light, its output light has extremely high coherence, extremely narrow spectral width and extremely small divergence angle, with a spectral width typically reaching 0.1 ~ 1 nm or even narrower. These characteristics make it very suitable for long-distance, high-speed fiber optic transmission systems.

[0021] 3) Light Emitting Diode (LED): Used in optical communication to emit visible or infrared light. It has a wide spectrum and a large divergence angle, making it suitable for short-distance, low-speed plastic optical fiber or visible light communication systems. Micro-LEDs, as miniaturized LEDs, possess high modulation bandwidth and fast response characteristics, enabling transmission rates of several gigabits per second in visible light communication.

[0022] Figure 1 This is an embodiment of the optical communication method provided by the present invention, such as... Figure 1 As shown, it includes the following steps: Step S101: Convert the electrical signal provided by the transmitting device into an optical signal.

[0023] The transmitting device in this embodiment of the invention may be a digital processing circuit integrated inside an electronic terminal device (such as a mobile phone or computer), such as a CPU or GPU processor main control chip; or an internal signal processing circuit in a network communication device, such as a dedicated network chip. The transmitting device may also be the electronic terminal device or the network communication device itself, providing electrical signals through a signal interface.

[0024] The device that converts electrical signals into optical signals can be integrated into the circuitry inside the transmitting device, or it can be electrically connected to the transmitting device as a separate optical module.

[0025] Converting electrical signals into optical signals can be achieved using light-emitting devices based on semiconductor PN junction structures, such as laser diodes or light-emitting diodes. These devices can be arranged in an array for multi-channel parallel conversion.

[0026] In some embodiments, the optical signal may be a near-infrared optical signal of a single wavelength or a visible optical signal with a certain wavelength range; the wavelength of the near-infrared optical signal may be 850nm, 1310nm or 1550nm; the wavelength range of the optical signal may be 380nm-780nm.

[0027] Preferably, converting the electrical signal provided by the transmitting device into an optical signal includes: converting the electrical signal provided by the transmitting device into a blue light signal of visible light, wherein the switching frequency of the blue light signal is greater than a second threshold.

[0028] The visible light blue light signal can be a blue light signal with a wavelength range of 380nm to 530nm; preferably, it can be a blue light signal with a wavelength range of 400nm to 430nm. The second threshold can be 800MHz. Preferably, the second threshold can be 1GHz. For example, a blue light-emitting diode (Micro LED) with a switching frequency higher than 1GHz can be used.

[0029] In some embodiments, the electrical signal provided by the transmitting device may be converted into a visible light signal, or a visible light violet or yellow light signal.

[0030] Step S102: Filter and focus the optical signal to obtain an optical signal with a wavelength less than a preset half-width threshold and a divergence angle less than a first threshold; wherein, the filtered and focused optical signal is used for optical fiber transmission and converted into an electrical signal to be provided to the receiving device.

[0031] In this embodiment of the invention, the converted optical signal can be filtered first and then focused; or focused first and then filtered to obtain an optical signal with a wavelength less than a preset half-width threshold and a divergence angle less than a first threshold.

[0032] Filtering visible light can be achieved using color filters or pigments coated on the focusing unit to obtain a light signal smaller than a preset half-width threshold. Optionally, filters / filters (based on interference and diffraction principles) can also be used to allow only visible light of specific wavelengths or wavelength ranges to pass through. Multiple filtering units with different filtering effects can be combined. Preferably, the half-width threshold can be referenced to the half-width threshold of a laser diode.

[0033] Visible light can be focused using microlenses, aspherical lenses, etc. Parameters such as the focal length of the focusing unit and its distance from the light-emitting device are set such that the divergence angle of the visible light signal passing through the focusing unit is less than a first threshold, or the focal point of the visible light signal passing through the focusing unit is located within the photosensitive range of the corresponding optical fiber channel. The first threshold corresponds to the channel size (channel aperture) of the optical fiber used, such as 70%-80% of the optical fiber channel aperture.

[0034] For the multi-channel, parallel optical signals obtained by the light-emitting device array, each channel's optical signal is independently filtered and focused; and the independently filtered and focused optical signals can correspondingly enter the channels of the optical fiber used for communication.

[0035] In some embodiments, after the filtered and focused optical signal is transmitted through optical fiber, the optical signal suffers loss and dispersion. Before the optical signal is converted into an electrical signal and provided to the receiving device, it needs to be filtered and focused again to ensure that the wavelength range and divergence angle of the optical signal meet the requirements and smoothly enter the device that converts the optical signal into an electrical signal.

[0036] The device that converts optical signals into electrical signals can be integrated into the circuitry of the receiving device, or it can be electrically connected to the receiving device as a separate optical module. The receiving device can be a device similar to the transmitting device.

[0037] Figure 2 This is another embodiment of the optical communication method provided by the present invention, such as... Figure 2 As shown, it includes the following steps: Step S201: Convert the electrical signal provided by the transmitting device into a visible light signal.

[0038] With the continuous development and application of AI technology, data transmission bandwidth is constantly expanding, and optical communication technology is being used more and more widely in data transmission, such as... Figure 3As shown, existing optical communication methods generally consist of two optical (transceiver) modules and an optical fiber between them. Each optical (transceiver) module contains both a transmitting (converting electrical signals into optical signals) and a receiving (converting optical signals into electrical signals) unit.

[0039] Current optical (transceiver) modules typically use near-infrared light as their transmission light source, with some using visible light. However, both near-infrared and visible light are prone to loss and dispersion during long-distance transmission. Furthermore, due to its wavelength distribution and divergence angle, visible light, compared to the single-wavelength near-infrared light, suffers from difficulties in penetrating optical fibers and experiences greater energy loss.

[0040] Therefore, embodiments of the present invention provide a visible light optical communication method. Specifically: like Figure 4 As shown, the electronic chip 10 of the transmitting device provides electrical signals to the light-emitting unit 1201 through the data transmission circuit 20 integrated on the electronic chip 10.

[0041] In this embodiment of the invention, the light-emitting unit 1201 uses a micro LED array to convert electrical signals into visible light.

[0042] Step S202: Filter and focus the visible light to obtain a communication optical signal with a wavelength less than a preset half-width threshold and a divergence angle less than a first threshold.

[0043] like Figure 5 As shown, compared to near-infrared light of a single wavelength, visible light has a larger emission angle. If visible light is not focused, it is difficult to effectively transmit the optical signal into the optical fiber's path, and it also results in significant energy loss. Therefore, embodiments of this invention employ a microlens array (such as...) Figure 6 As shown, it serves as a focusing unit 1203 to focus visible light. Figure 7 As shown, the light signal after focusing has a higher intensity than before focusing, which can effectively reduce the energy loss of the light signal.

[0044] like Figure 8 As shown, compared to the spectrum emitted by a laser diode and the spectrum of ideal single-wavelength near-infrared light, the visible light emitted by a light-emitting diode (LED, specifically micro LED in this embodiment) has a wider half-width at half-maximum (WHM) and severe dispersion problems, limiting the transmission distance of optical fibers. Furthermore, the spectral distribution diagram of micro LEDs (…) Figure 9As can be seen from the data, blue light emitted by microLEDs has the highest energy and the narrowest distribution range, making it more suitable for optical communication. Therefore, in this embodiment of the invention, a blue pigment array is coated on the planar side of the convex lens array of the focusing unit 1203 to filter the visible light emitted by the light-emitting unit 1201. The coating method is as follows: Figure 10 As shown. The spectrum of the optical signal obtained after filtering is as follows. Figure 11 shown.

[0045] In other embodiments, a separate filtering unit 1202 may be used for filtering. The separate filtering unit 1202 may be a color filter coated with a blue pigment array and disposed on the planar side or convex side of the focusing unit 1203; the array arrangement of the filter is the same as and corresponds to the array arrangement of the focusing unit 1203.

[0046] The communication optical signal obtained after filtering and focusing should meet the requirements for half-width and divergence angle. Among them, the half-width should be as small as possible. Preferably, the half-width threshold can be referenced to the half-width threshold of the laser diode. The threshold requirement for divergence angle should correspond to the channel size (channel aperture) of the optical fiber used. For example, the first threshold is 70%-80% of the optical fiber channel aperture.

[0047] Step S203: Transmit the filtered and focused communication optical signal through optical fiber.

[0048] In some embodiments, the channels of the light-emitting unit 1201, the filtering unit 1202, the focusing unit 1203 and the optical fiber 30 can be aligned through an optical fiber interface 1204 to ensure that the optical signal of each channel / array can correctly enter the corresponding optical fiber channel.

[0049] Step S204: The communication optical signal transmitted through the optical fiber is filtered and focused again, so that the wavelength range of the communication optical signal that has generated dispersion and loss after transmission is narrowed to less than the preset half-width threshold and the divergence angle is less than the first threshold.

[0050] like Figure 4 As shown, before the detection unit 1205 converts the received communication optical signal, it also includes a focusing unit 1203 and a filtering unit 1202 coated on the focusing unit 1203; used to narrow the wavelength range of the communication optical signal that generates dispersion and loss after transmission to less than a preset half-width threshold and the divergence angle is less than a first threshold.

[0051] The optical fiber 30, focusing unit 1203, filtering unit 1202 and detection unit 1205 can be aligned via the optical fiber interface 1204.

[0052] Step S205: Convert the filtered and focused communication optical signal into an electrical signal and provide it to the receiving device.

[0053] In this embodiment of the invention, the detection unit 1205 converts the filtered and focused communication optical signal into an electrical signal, which is then provided to the electronic chip 10, i.e., the receiving device, through the data transmission circuit 20.

[0054] Figure 12 This is a schematic diagram of the main modules of the transmitting optical module provided in one embodiment of the present invention, as shown below. Figure 12 As shown, the transmitting optical module 1200 includes: The light-emitting unit 1201 is used to convert the electrical signal provided by the transmitting device into an optical signal.

[0055] In some embodiments, the light-emitting unit is used to receive electrical signals and convert them into light signals, including: the light-emitting unit is used to convert the electrical signals provided by the transmitting device into visible blue light signals, wherein the switching frequency of the blue light signals is greater than a second threshold.

[0056] In some embodiments, the light-emitting unit includes: an electrode layer for converting electrical signals provided by a transmitting device into electrons and holes, and transporting the electrons and holes to the light-emitting layer through an epitaxial layer; a light-emitting layer for recombinating electrons and holes, and releasing the energy generated by the recombination of electrons and holes in the form of an optical signal; an epitaxial layer for providing a transport channel for electrons and holes; and a substrate for transmitting the optical signal released by the light-emitting layer to an optical fiber interface.

[0057] like Figure 13 As shown, the electrode layer can be a Ni / Au double-layer metal electrode, the light-emitting layer can be a multiple quantum well (MQW), the epitaxial layer can be a GaN semiconductor material, and the substrate can be sapphire.

[0058] The filtering unit 1202 is disposed after the light-emitting unit or the light-concentrating unit, and is used to filter the light signal obtained by the light-emitting unit or the light-concentrating unit to obtain a light signal that is less than a preset half-width threshold.

[0059] The focusing unit 1203 is disposed after the filtering unit or the light-emitting unit, and is used to focus the light signal obtained by the filtering unit or the light-emitting unit to obtain a light signal with a divergence angle less than a first threshold.

[0060] In some embodiments, the light-concentrating unit is configured to have a plurality of convex lens arrays; the convex lens arrays have a planar side and a corresponding convex side that are in contact with the light-emitting unit; the filtering unit is configured to be a pigment array coated on the planar side or the convex side of the convex lens array, wherein the position of the pigment in the pigment array corresponds one-to-one with the position of the convex lens in the convex lens array.

[0061] The fiber optic interface 1204 is used to provide an optical signal, which has been filtered and focused and is less than a preset half-wavelength threshold and has a divergence angle less than a first threshold, to the optical fiber for transmission.

[0062] Figure 14 This is a schematic diagram of the main modules of an optical communication architecture provided in one embodiment of the present invention, as shown below. Figure 14 As shown, the optical communication architecture 1400 includes: The transmitting optical module 1401 is used to convert the electrical signal provided by the transmitting device into an optical signal; to filter and focus the optical signal to obtain an optical signal with a wavelength less than a preset half-width threshold and a divergence angle less than a first threshold.

[0063] In some embodiments, the transmitting optical module is used to convert the electrical signal provided by the transmitting device into an optical signal, including: the transmitting optical module is used to convert the electrical signal provided by the transmitting device into a blue light signal of visible light, wherein the switching frequency of the blue light signal is greater than a second threshold.

[0064] Fiber optic cable 1402 is used to transmit filtered and focused optical signals.

[0065] The receiving optical module 1403 is used to convert optical signals transmitted through optical fibers into electrical signals and provide them to the receiving device.

[0066] In some embodiments, the receiving optical module is further configured to: filter and focus the optical signal transmitted through the optical fiber again before converting the optical signal transmitted through the optical fiber into an electrical signal.

[0067] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods, architectures, and apparatuses according to various embodiments of the invention. In this regard, each block in a flowchart or block diagram may represent a module or a portion of a module. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, or they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0068] The names of the units described in the embodiments of the present invention do not necessarily constitute a limitation on the unit itself. For example, a light-emitting unit can also be described as "a unit that converts an electrical signal provided by a transmitting device into an optical signal".

[0069] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An optical communication method, characterized in that, include: Convert the electrical signal provided by the transmitting device into an optical signal; The optical signal is filtered and focused to obtain an optical signal with a wavelength less than a preset half-width threshold and a divergence angle less than or equal to a first threshold. The filtered and focused optical signal is used for optical fiber transmission and is converted into an electrical signal for use with the receiving device.

2. The method according to claim 1, characterized in that, Converting electrical signals provided by the transmitting device into optical signals includes: The electrical signal provided by the transmitting device is converted into a blue light signal that is visible light, and the switching frequency of the blue light signal is greater than a second threshold.

3. A transmitting optical module, characterized in that, include: The light-emitting unit is used to convert the electrical signals provided by the transmitting device into optical signals; A filtering unit is disposed after the light-emitting unit or the light-concentrating unit, and is used to filter the light signal obtained by the light-emitting unit or the light-concentrating unit to obtain a light signal that is less than a preset half-wavelength threshold. A focusing unit is disposed after a filtering unit or a light-emitting unit, used to focus the light signal obtained by the filtering unit or the light-emitting unit to obtain a light signal with a divergence angle less than a first threshold. The fiber optic interface is used to provide optical signals, which have been filtered and focused and are less than a preset half-wavelength threshold and have a divergence angle less than a first threshold, to the optical fiber for transmission.

4. The optical module according to claim 3, characterized in that, The light-emitting unit is used to receive electrical signals and convert them into light signals, including: the light-emitting unit is used to convert the electrical signals provided by the transmitting device into visible blue light signals, wherein the switching frequency of the blue light signals is greater than a second threshold.

5. The optical module according to claim 3, characterized in that, The light-emitting unit includes: An electrode layer is used to convert electrical signals provided by the transmitting device into electrons and holes, and to transport the electrons and holes to the light-emitting layer through the epitaxial layer; The light-emitting layer is used to recombine the electrons and holes, and release the energy generated by the recombination of the electrons and holes in the form of light signals; The epitaxial layer is used to provide transport channels for the electrons and holes; The substrate is used to transmit the light signal emitted by the light-emitting layer to the optical fiber interface.

6. The optical module according to claim 3, characterized in that, The light-concentrating unit is configured to have a plurality of convex lens arrays; the convex lens arrays have a planar side that contacts the light-emitting unit and a corresponding convex side.

7. The optical module according to claim 6, characterized in that, The filtering unit is configured as a pigment array coated on the planar side or convex side of the convex lens array, wherein the position of the pigment in the pigment array corresponds one-to-one with the position of the convex lens in the convex lens array.

8. An optical communication architecture, characterized in that, include: The transmitting optical module is used to convert electrical signals provided by the transmitting device into optical signals; The optical signal is filtered and focused to obtain an optical signal with a wavelength less than a preset half-width threshold and a divergence angle less than a first threshold. Optical fiber is used to transmit filtered and focused optical signals; The receiving optical module is used to convert optical signals transmitted through optical fibers into electrical signals and provide them to the receiving device.

9. The communication architecture according to claim 8, characterized in that, The transmitting optical module is used to convert the electrical signal provided by the transmitting device into an optical signal, including: the transmitting optical module is used to convert the electrical signal provided by the transmitting device into a blue light signal of visible light, wherein the switching frequency of the blue light signal is greater than a second threshold.

10. The communication architecture according to claim 8, characterized in that, The receiving optical module is further configured to: filter and focus the optical signal transmitted through the optical fiber again before converting it into an electrical signal.

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