Radio over fiber link device based on vertical cavity surface semiconductor device and electronic equipment

Abstract

The invention provides a radio-over-fiber link device based on a vertical cavity surface semiconductor device and electronic equipment, and the radio-over-fiber link device comprises an antenna array, a TR assembly, a laser array, a photoelectric detector array and a signal processing assembly, and a radio-over-fiber link comprising a transmitting and receiving bidirectional link is constructed through the cooperation of all the assemblies. Wherein radio-frequency signals received by the antenna array in the receiving link are amplified and filtered by the TR assembly, then electro-optical conversion and transmission are completed by the laser array, and the radio-frequency signals are restored into the radio-frequency signals by the photoelectric detector array and then are demodulated by the signal processing assembly; and in the transmitting link, a radio frequency signal is generated by the signal processing assembly, is converted into an optical carrier signal by the laser array for transmission, is restored by the photoelectric detector array, is processed by the TR assembly, and is transmitted by the antenna array. According to the invention, the long-distance transmission advantage of the optical carrier signal is enhanced, the overall power consumption and the heat dissipation pressure of the link are greatly reduced, and the stability and the large-scale application suitability of the optical carrier radio frequency link are improved.

Description

Technical Field

[0001] This application relates to the fields of microwave and optical communication technology, and in particular to an optical radio frequency link device and electronic device based on a vertical cavity surface semiconductor device. Background Technology

[0002] Optical radio frequency (RF) technology is a key technology for transmitting and processing RF signals using optical methods. With its core performance advantages such as wide bandwidth, low transmission loss, and high parallelism, it has been widely used in RF information systems. Current optical RF technologies primarily focus on the O-band and C-band. The core advantage of these two bands lies in their suitability for long-distance signal transmission scenarios, making them the mainstream choice for traditional optical RF systems.

[0003] However, in miniaturized application platforms, the internal transmission distance is typically controlled within the hundreds of meters. At this distance, the long-distance transmission advantages of O-band and C-band are significantly weakened, while their electro-optical / photoelectric conversion losses become prominent. Simultaneously, the operating current of the laser sources corresponding to O-band and C-band is relatively high. In large-scale array deployment scenarios, this not only leads to high overall power consumption but also causes serious heat dissipation problems. Currently, 850nm multimode transmission solutions are widely used in the field of short-distance optical transmission, but this solution is mainly suitable for digital communication scenarios and cannot directly meet the specific needs of miniaturized application platforms for optical radio frequency signal transmission.

[0004] Therefore, it is necessary to provide an optical radio frequency link device and electronic device based on vertical cavity surface semiconductor devices to meet the problems of low conversion efficiency, high power consumption and difficulty in array expansion faced by O-band and C-band optical radio frequency links in short-distance and array-scale applications. Summary of the Invention

[0005] This application aims to at least partially address one of the technical problems in the related art.

[0006] To achieve the above objectives, a first aspect of this application provides an optical radio frequency link device based on a vertical cavity surface semiconductor device, comprising: This includes antenna arrays, TR components, laser arrays, photodetector arrays, and signal processing components; among which, The antenna array is used for receiving or transmitting radio frequency signals; The TR component is connected to the antenna array and is used to perform preset processing on the radio frequency signals received or transmitted by the antenna array; The laser array is interconnected with the TR component and the signal processing component respectively, and is used to convert the radio frequency signal output by the TR component or the signal processing component into an optical signal. The photodetector array is interconnected with the laser array and the TR component, respectively, and is used to convert the optical signal transmitted by the laser array into a radio frequency signal and transmit it to the signal processing component or the TR component; The signal processing component is interconnected with the photodetector array and the laser array respectively, and is used to receive the radio frequency signal output by the photodetector array and demodulate the original information loaded on it; or generate a radio frequency signal that meets the transmission requirements and transmit it to the laser array.

[0007] Optionally, the TR component includes a receiving processing component and a transmitting processing component. The receiving processing component is disposed between the antenna array and the laser array, and is used to perform low-noise amplification and matching processing on the radio frequency signal received by the antenna array, and transmit it to the laser array. The transmitting processing component is disposed between the photodetector array and the antenna array, and is used to perform power amplification and matching processing on the radio frequency signal output by the photodetector array, so that the amplified radio frequency signal meets the transmitting threshold of the antenna array.

[0008] Optionally, the TR component includes at least a low-noise amplifier, a power amplifier, a phase shifter, a controllable attenuator, and a driver chip; wherein, The low-noise amplifier, the phase shifter, and the controllable attenuator are connected in series between the antenna array and the laser array to form the receiving and processing component; The power amplifier, the phase shifter, and the controllable attenuator are connected in series between the photodetector array and the antenna array, forming the transmission processing assembly; The driver chip is connected to the receiving processing component and the transmitting processing component respectively, and selectively turns on the working channels between the receiving processing component and the transmitting processing component and the antenna array respectively, so as to control the antenna array to switch between receiving state and transmitting state.

[0009] Optionally, the TR component includes multiple sets of the receiving processing components, and the driver chip is further configured to control the antenna array and the laser array to switch between channel-level transmission mode and subarray-level transmission mode when the antenna array is in receiving mode; wherein, The channel-level transmission mode is the working mode in which the driver chip controls multiple sets of receiving and processing components to be connected and turned on one-to-one with the working channels between the multiple antenna elements in the receiving state in the antenna array and the different lasers in the laser array. The subarray-level transmission mode is the working mode in which the driving chip controls the working channels between multiple sets of receiving and processing components and multiple antenna elements in the antenna array that are in the receiving state to be connected one-to-one and combined to form a combined channel, and then connects and conducts the working channel between the combined channel and one of the lasers in the laser array.

[0010] Optionally, the TR component includes multiple sets of the transmission processing components, and the driver chip is further configured to control the antenna array and the photodetector array to switch between channel-level transmission mode and subarray-level transmission mode when the antenna array is in the transmission state; wherein, The channel-level transmission mode is the working mode in which the driver chip controls multiple sets of transmission processing components to connect and conduct one-to-one with the working channels of multiple antenna elements in the antenna array that are in the transmission state and different photodetectors in the photodetector array.

[0011] The subarray-level transmission mode is the working mode in which the driving chip controls the working channels between multiple sets of transmission processing components and multiple antenna elements in the antenna array that are in the transmission state to be connected one-to-one and combined to form a combined channel, and then connects and conducts the working channel between the combined channel and a photodetector in the photodetector array.

[0012] Optionally, the device further includes a signal transmission and switching component, which includes an optical signal transmission channel and an electrical signal transmission channel; wherein, The optical signal transmission channel is used to realize a one-way channel connection between the laser array and the photodetector array; The electrical signal transmission channel is used to realize unidirectional channel connection between the signal processing component and the laser array, and between the photodetector array and the signal processing component.

[0013] Optionally, the signal transmission and switching component further includes an optical channel switching unit, which is used to control and switch the transmission path of the optical carrier signal among the multiple optical signal transmission channels.

[0014] Optionally, the laser array consists of multiple 850nm single-mode vertical cavity surface-mount semiconductor lasers, the photodetector array consists of multiple 850nm PIN-type photodetectors, the optical signal transmission channel is an 850nm single-mode optical fiber, and the optical channel switching unit is an 850nm optical fiber switching unit.

[0015] Optionally, the signal processing component includes at least a demultiplexing module, a signal demodulation module, a multiplexing and beamforming module, and a signal modulation module; wherein, The demultiplexing module is used to split the combined input radio frequency signal and restore it into multiple radio frequency signals; The signal demodulation module is used to demodulate and extract the original information loaded on the input multi-channel radio frequency signals; The signal modulation module is used to generate multiple radio frequency signals that meet the transmission requirements; The multiplexing and beamforming module is used to combine multiple radio frequency signals that meet the transmission requirements into a single electrical signal.

[0016] To achieve the above objectives, a second aspect of this application provides an electronic device including an optical radio frequency link device based on a vertical cavity surface semiconductor device as described in any of the preceding claims.

[0017] The optical radio frequency link device and electronic device based on vertical cavity surface semiconductor devices provided in this application have at least the following beneficial effects: This application provides an optical radio frequency link device and electronic device based on a vertical cavity surface-mount semiconductor device, including an antenna array, a transducer (TR) module, a laser array, a photodetector array, and a signal processing component. This application constructs an optical radio frequency link device comprising bidirectional transmission and reception links through the coordinated operation of the antenna array, TR module, laser array, photodetector array, and signal processing component. In the receiving link, the radio frequency signal received by the antenna array is amplified and filtered by the TR module, then electro-optically converted and transmitted by the laser array, and finally restored to a radio frequency signal by the photodetector array before being demodulated by the signal processing component. In the transmitting link, the signal processing component generates a radio frequency signal, which is converted into an optical signal by the laser array for transmission, then restored by the photodetector array, processed by the TR module, and transmitted by the antenna array. This device specifically addresses the technical pain points of existing optical radio frequency links, such as weakened long-distance transmission advantages, significant electro-optical and photoelectric conversion losses, and high power consumption and heat dissipation issues caused by the large operating current of O-band and C-band laser sources when the array is used on a large scale. By using a low-threshold, low-power laser array to achieve efficient electro-optical and photoelectric conversion, it not only enhances the long-distance transmission advantage of optical signals, but also significantly reduces the overall power consumption and heat dissipation pressure of the link, thereby improving the stability and adaptability of optical radio frequency links for large-scale applications.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of an optical radio frequency link device based on a vertical cavity surface semiconductor device according to an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of another optical radio frequency link device based on a vertical cavity surface semiconductor device according to an embodiment of this application.

[0021] 1. Antenna array; 2. TR component; 3. Laser array; 4. Photodetector array; 5. Signal transmission and switching component; 6. Signal processing component. Detailed Implementation

[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0023] According to one aspect of this application, an optical radio frequency link device based on a vertical cavity surface-mount semiconductor device is provided, such as... Figure 1 and Figure 2 As shown, the device includes an antenna array 1, a TR component 2, a laser array 3, a photodetector array 4, and a signal processing component 6.

[0024] Antenna array 1 is used for receiving or transmitting radio frequency (RF) signals. TR component 2 is connected to antenna array 1 and is used to perform preset processing on the RF signals received or transmitted by antenna array 1. Laser array 3 is interconnected with TR component 2 and signal processing component 6 respectively, and is used to convert the RF signals output by TR component 2 or signal processing component 6 into optical carrier signals. Photodetector array 4 is interconnected with laser array 3 and TR component 2 respectively, and is used to convert the optical carrier signals transmitted by laser array 3 into RF signals and transmit them to signal processing component 6 or TR component 2. Signal processing component 6 is interconnected with photodetector array 4 and laser array 3 respectively, and is used to receive the RF signals output by photodetector array 4, demodulate the original information loaded on it, or generate RF signals that meet the transmission requirements and transmit them to laser array 3.

[0025] It is understandable that antenna array 1 is composed of multiple antenna elements arranged in a preset manner. As an interface for the interaction between radio frequency signals and space, antenna array 1 is specifically used to realize the spatial reception or transmission of radio frequency signals. It can adapt to the radio frequency signal transmission requirements of different frequency bands, provide a stable radio frequency signal input or output source for optical radio frequency links, and is the basic structure for the link to realize the spatial transmission and reception of radio frequency signals.

[0026] TR component 2, as the core module for preprocessing radio frequency signals, is directly connected to antenna array 1. Its preset processing procedures may include signal amplification, filtering, mixing, phase shifting, or attenuation, which can effectively optimize the quality of radio frequency signals received or to be transmitted by antenna array 1, filter out interference signals and improve the effective signal strength, and ensure the accuracy and reliability of subsequent electro-optical conversion or radio frequency signal transmission.

[0027] As the core component of electro-optic conversion in the link, the laser array 3 is interconnected with the TR component 2 and the signal processing component 6 respectively. It can load the receiving end RF signal output by the TR component 2 or the transmitting end RF signal generated by the signal processing component 6 onto the optical carrier, complete the conversion of RF signal to optical carrier signal, and realize long-distance low-loss transmission of RF signal by means of the transmission characteristics of optical signal.

[0028] The photodetector array 4 performs photoelectric conversion in the link and is interconnected with the laser array 3 and the TR component 2 respectively. It can restore the optical carrier signal transmitted by the laser array 3 into a radio frequency signal, ensuring that the radio frequency information in the optical carrier signal is accurately extracted. Then, the restored radio frequency signal is transmitted to the signal processing component 6 for demodulation or to the TR component 2 for subsequent transmission processing. Its conversion efficiency directly affects the overall signal transmission quality of the link.

[0029] The signal processing component 6, as the core of signal control and analysis of the link, is interconnected with the photodetector array 4 and the laser array 3 respectively. It can receive the radio frequency signal output by the photodetector array 4 and demodulate and decode the original information loaded in the signal to obtain effective data. It can also generate radio frequency signals that meet the frequency band and power requirements according to the transmission requirements, and provide the laser array 3 with the transmitter radio frequency signal to be converted, so as to realize the bidirectional signal processing and control of the link.

[0030] In summary, this application constructs an optical radio frequency link device comprising a bidirectional transmission and reception link through the coordinated operation of antenna array 1, TR component 2, laser array 3, photodetector array 4, and signal processing component 6. In the reception link, the radio frequency signal received by antenna array 1 is amplified and filtered by TR component 2, then electro-optically converted and transmitted by laser array 3, and finally restored to a radio frequency signal by photodetector array 4 before being demodulated by signal processing component 6. In the transmission link, the signal processing component 6 generates a radio frequency signal, which is converted into an optical signal by laser array 3 for transmission, then restored by photodetector array 4, processed by TR component 2, and transmitted by antenna array 1. This device specifically addresses the technical pain points of existing optical radio frequency links, such as weakened long-distance transmission advantages, significant electro-optical and photoelectric conversion losses, and high power consumption and heat dissipation issues caused by the large operating current of O-band and C-band laser sources when the array is used on a large scale. By using a low-threshold, low-power laser array 3 to achieve efficient electro-optical and photoelectric conversion, it not only enhances the long-distance transmission advantage of optical signals, but also significantly reduces the overall power consumption and heat dissipation pressure of the link, thereby improving the stability and adaptability of the optical radio frequency link for large-scale applications.

[0031] In some embodiments, the TR component 2 includes a receiving processing component and a transmitting processing component. The receiving processing component is disposed between the antenna array 1 and the laser array 3, and is used to perform low-noise amplification and matching processing on the radio frequency signal received by the antenna array 1, and transmit it to the laser array 3. The transmitting processing component is disposed between the photodetector array 4 and the antenna array 1, and is used to perform power amplification and matching processing on the radio frequency signal output by the photodetector array 4, so that the amplified radio frequency signal meets the transmitting threshold of the antenna array 1.

[0032] Understandably, the receiving processing component, serving as the RF signal enhancement and adaptation module of the receiving link, is positioned between antenna array 1 and laser array 3. Due to the generally weak strength and susceptibility to interference issues of the RF signals received by antenna array 1, low-noise amplification processing can significantly improve the effective signal strength while maximally suppressing additional noise introduced during amplification, ensuring a high signal-to-noise ratio. Simultaneously, matching processing enables impedance matching between the receiving processing component and antenna array 1 and laser array 3, preventing reflection losses during signal transmission and providing a high-quality, low-distortion RF signal source for the subsequent electro-optical conversion of laser array 3, ensuring the accuracy of optical signal transmission.

[0033] The transmission processing component, serving as the RF signal power enhancement and adaptation module for the transmission link, is located between the photodetector array 4 and the antenna array 1. Since the RF signal power restored by the photodetector array 4 often fails to meet the transmission threshold requirements of the antenna array 1, power amplification processing can boost the signal power to a level suitable for antenna transmission, ensuring that the RF signal can effectively radiate into space. Matching processing also achieves impedance coordination between the transmission processing component, the photodetector array 4, and the antenna array 1, reducing signal loss at the transmission interface and improving power transmission efficiency.

[0034] This dual-structure allows TR component 2 to focus on the core requirements of the receiving and transmitting links respectively, and works in synergy with the low-power electro-optical conversion of laser array 3 and the high-efficiency photoelectric conversion of photodetector array 4 to further optimize the signal integrity and transmission efficiency of the optical radio frequency link, help solve the problem of prominent conversion loss in the existing link, and enhance the overall performance stability of the device.

[0035] For example, TR component 2 includes at least a low-noise amplifier, a power amplifier, a phase shifter, a controllable attenuator, and a driver chip.

[0036] Understandably, TR component 2, through the modular combination and functional division of low-noise amplifiers, power amplifiers, phase shifters, controllable attenuators and driver chips, can achieve fine-grained control of the RF signal receiving and transmitting links, further improving the accuracy and flexibility of link signal processing.

[0037] Specifically, the receiving and processing component can consist of a low-noise amplifier, a phase shifter, and a controllable attenuator connected in series between the antenna array 1 and the laser array 3. The low-noise amplifier first amplifies the weak radio frequency signal received by the antenna array 1 to improve the signal-to-noise ratio. The phase shifter can precisely adjust the signal phase, and the controllable attenuator adjusts the signal amplitude according to the input requirements of the subsequent laser array 3. The three components work together to enhance the received signal, calibrate the phase, and match the amplitude, ensuring that the radio frequency signal parameters input to the laser array 3 are stable and have low distortion, thus providing a reliable foundation for electro-optical conversion.

[0038] The transmission processing component can consist of a power amplifier, a phase shifter, and a controllable attenuator connected in series between the photodetector array 4 and the antenna array 1. The radio frequency signal output by the photodetector array 4 is boosted to the power level that meets the transmission requirements by the power amplifier. The phase shifter realizes phase modulation of the radio frequency signal. The controllable attenuator is adapted to the transmission threshold of the antenna array 1 to fine-tune the amplitude. The three components work together to optimize the power and phase characteristics of the radio frequency signal, thereby ensuring the effective radiation of the antenna array 1.

[0039] The driver chip is connected to the receiving and transmitting processing components respectively. Its core function is to selectively conduct the working channels between the receiving and transmitting processing components and the antenna array 1, thereby controlling the switching of the antenna array 1 between the receiving and transmitting states. This avoids signal crosstalk or functional conflicts caused by the simultaneous conduction of the receiving and transmitting links, ensuring the independent and stable operation of the device in the receiving and transmitting modes. At the same time, the switching control of the driver chip matches the working timing of the front-end and back-end laser array 3 and photodetector array 4, realizing the orderly connection of the bidirectional links and further enhancing the overall coordination and operational reliability of the optical radio frequency link.

[0040] For example, the TR component 2 includes multiple sets of receiving and processing components, and the driver chip is also used to control the antenna array 1 and the laser array 3 to switch between channel-level transmission mode and subarray-level transmission mode when the antenna array 1 is in the receiving state.

[0041] Understandably, TR component 2 includes multiple sets of receiving and processing components, which can be precisely matched with multiple antenna elements in antenna array 1 to achieve parallel reception and independent processing of multi-channel RF signals. The newly added mode switching function of the driver chip further expands the application adaptability of the device and forms a synergistic optimization with the receiving and processing components and laser array 3. Specifically, in channel-level transmission mode, the driver chip controls multiple sets of receiving processing components to be turned on one by one with multiple receiving antenna units of antenna array 1 and different lasers of laser array 3. This allows the radio frequency signal received by each antenna unit to be independently transmitted to the corresponding laser for electro-optic conversion after low-noise amplification, phase calibration and amplitude matching by the corresponding receiving processing components. This mode can completely preserve the independence and original information of each channel signal and is suitable for scenarios that require high resolution and multi-target parallel detection, ensuring the accuracy of signal transmission and parallel processing capabilities.

[0042] In subarray-level transmission mode, the driver chip controls multiple sets of receiving and processing components to connect to the corresponding antenna elements one by one, and then combines the processed signals into a single beam-combining channel, which is connected to one of the lasers in the laser array 3. By combining the signals, the power intensity of the optical signal can be significantly improved, the transmission reliability and detection sensitivity of weak signals can be enhanced, and the number of lasers used can be reduced. Combined with the low power consumption of the laser array 3, the overall power consumption and heat dissipation pressure of the system can be further reduced, which is suitable for the lightweight and low-cost application requirements of large-scale antenna arrays.

[0043] By flexibly switching between two transmission modes, the driver chip enables the device to dynamically adjust the signal transmission strategy according to actual application scenarios, such as signal strength, resolution requirements, and power consumption limitations. Combined with the refined signal processing of the receiving and processing components and the efficient electro-optical conversion of the laser array 3, it not only solves the problems of excessive power consumption and significant signal loss in the multi-channel processing of existing links, but also achieves on-demand adaptation of high resolution and high sensitivity, greatly improving the scenario adaptability and overall performance of the optical radio frequency link device.

[0044] For example, the TR component 2 includes multiple sets of transmission processing components, and the driver chip is also used to control the antenna array 1 and the photodetector array 4 to switch between channel-level transmission mode and subarray-level transmission mode when the antenna array 1 is in the transmission state.

[0045] Understandably, TR component 2 also includes multiple sets of transmission processing components, which can be precisely adapted to multiple transmission antenna units of antenna array 1 to support parallel processing and transmission of multi-channel radio frequency signals. The mode switching function of the driver chip in the transmission state further optimizes the flexibility and adaptability of the transmission link and forms deep collaboration with the transmission processing components and photodetector array 4.

[0046] Specifically, in channel-level transmission mode, the driver chip controls multiple sets of transmission processing components, which are respectively connected to multiple transmitting antenna units of antenna array 1 and different photodetectors of photodetector array 4. This allows the radio frequency signal restored by each photodetector to be independently transmitted to the corresponding antenna unit after power enhancement, phase modulation and amplitude matching by the corresponding transmission processing components. This mode can ensure the independence and transmission accuracy of each channel signal, and is suitable for scenarios that require parallel transmission of multiple targets and high-resolution signal transmission, meeting the multi-channel collaborative transmission requirements of complex applications.

[0047] In subarray-level transmission mode, the driver chip controls multiple sets of transmission processing components to first connect with one photodetector in the photodetector array 4. This demultiplexes the single RF signal to be transmitted from the combined output of the photodetector into multiple independent RF signals to be transmitted, ensuring that each signal precisely corresponds to a transmitting antenna element within the subarray. Subsequently, the multiple sets of transmission processing components perform power amplification, phase modulation, and amplitude matching on the multiple RF signals to be transmitted, and then connect them one by one to the corresponding transmitting antenna elements for transmission. This mode reduces the number of core components by leveraging the combined output of a single photodetector, and reduces hardware costs, overall power consumption, and heat dissipation pressure due to the device's low power consumption advantage. Furthermore, demultiplexing and branching processing ensure the coordinated transmission requirements of multiple antenna elements, significantly improving the spatial radiation consistency and coverage of the RF signal, and accurately adapting to the high-density, lightweight transmission scenarios of large-scale antenna arrays.

[0048] By flexibly switching between two transmission modes, the driver chip enables the device to dynamically adjust its transmission strategy according to actual application scenarios, such as transmission distance, resolution requirements, and power consumption budget. Combined with the refined signal optimization of the transmission processing component and the efficient photoelectric conversion of the photodetector array 4, it not only solves the problems of excessive power consumption and significant attenuation of long-distance RF signal transmission when the existing transmission link operates in multi-channel mode, but also realizes on-demand adaptation between high-resolution parallel transmission and long-distance high-power transmission, which greatly improves the transmission performance and practical value of the optical RF link device in different application scenarios.

[0049] In some embodiments, the apparatus provided in this application further includes a signal transmission and exchange component 5, which includes an optical signal transmission channel and an electrical signal transmission channel. The optical signal transmission channel is used to realize a unidirectional channel connection between the laser array 3 and the photodetector array 4, and the electrical signal transmission channel is used to realize a unidirectional channel connection between the signal processing component 6 and the laser array 3, and between the photodetector array 4 and the signal processing component 6.

[0050] Understandably, the optical signal transmission channel, serving as the directional transmission route for optical signals, is used to achieve a unidirectional connection between the laser array 3 and the photodetector array 4. Its core function is to receive the optical signal output from the electro-optical conversion of the laser array 3 and transmit it directionally to the photodetector array 4, providing a low-loss, high-fidelity optical signal path for subsequent photoelectric conversion. The optical signal transmission channel can use single-mode fiber as the transmission medium, fully utilizing its low transmission loss and high signal integrity characteristics to ensure that the optical signal does not experience distortion or intensity attenuation during long-distance transmission, thus meeting the core requirements of the device for efficient electro-optical and photoelectric conversion.

[0051] The electrical signal transmission channel focuses on the directional transmission of radio frequency (RF) signals. This is achieved through two independent unidirectional channels: one between the signal processing component 6 and the laser array 3, used to directionally transmit the RF signal generated by the signal processing component 6, which meets the transmission requirements, to the laser array 3 as a signal source for electro-optical conversion; and the other between the photodetector array 4 and the signal processing component 6, used to directionally transmit the RF signal restored by the photodetector array 4 to the signal processing component 6 for demodulation and analysis. The design of these two electrical signal transmission channels ensures a unique RF signal transmission path and eliminates reverse interference, guaranteeing the accuracy and timeliness of signal processing.

[0052] Furthermore, the signal transmission and switching component 5 also includes an optical channel switching unit, which is used to control and switch the transmission path of the optical carrier signal between multiple optical signal transmission channels.

[0053] It is understandable that the optical channel switching unit, as the path control core of the optical signal transmission channel, is deeply integrated with the optical signal transmission channel (such as a physical link composed of single-mode optical fiber). Its core function is to flexibly switch the transmission path of the optical signal in the optical channel according to the working state of the device (receiving or transmitting) and the transmission mode of the TR component 2 (channel level or subarray level), so as to realize the directional and precise scheduling between the laser array 3 and the photodetector array 4.

[0054] Specifically, in the receiving link channel-level receiving mode, the optical channel switching unit controls the optical signal transmission channel to transmit the optical carrier signals output by each laser in the laser array 3 to the corresponding detectors in the photodetector array 4 one-to-one, ensuring the independence of multi-channel signals. In the subarray-level mode, it schedules the optical channel to transmit the combined optical carrier signals to a single photodetector, enhancing the transmission strength and reliability of weak signals. In the transmitting link, the directional transmission path of the optical signal is adapted in reverse according to the signal transmission requirements to ensure that the optical carrier signal is precisely matched with the transmission mode of the TR component 2 and the electro-optical conversion timing of the laser array 3.

[0055] This design works in deep synergy with the mode switching function of TR component 2 and the low-power characteristics of laser array 3. It retains the low-loss and high-fidelity advantages of the dedicated optical signal channel, and through the dynamic scheduling of the optical channel switching unit, it enables the optical signal transmission to adapt to different scenarios (such as multi-target parallel detection and long-distance high-power transmission) as needed. At the same time, it does not interfere with the directional transmission logic of the electrical signal transmission channel, and continues to ensure the accuracy and interference-free transmission of radio frequency electrical signals. This further solves the problems of fixed optical signal paths and insufficient scenario adaptability in existing links. It enables the optical radio frequency link to maintain the core advantages of low-loss and high-stability transmission, and to flexibly respond to the optical signal scheduling requirements of different working modes, which greatly improves the overall performance and practical value of the device.

[0056] In some embodiments, the signal processing component 6 includes at least a demultiplexing module, a signal demodulation module, a multiplexing beamforming module, and a signal modulation module.

[0057] Understandably, the signal processing component 6 achieves refined processing of radio frequency signals through the functional division and coordinated operation of the demultiplexing module, signal demodulation module, multiplexing and beamforming module, and signal modulation module, adapting to the different requirements of the receiving and transmitting links, and forming a deep linkage with the signal transmission and switching component 5 and the TR component 2, further improving the signal processing capability and adaptability of the optical radio frequency link.

[0058] Specifically, the demultiplexing module can accurately split and restore the combined input RF signal formed in the subarray-level transmission mode into multiple independent RF signals, solving the problem that the combined signal cannot be directly demodulated, ensuring that the original information of each signal is completely preserved, and providing a basis for the subsequent signal demodulation module.

[0059] The signal demodulation module receives multiple radio frequency signals output from the demultiplexing module, or a single radio frequency signal in channel-level transmission mode, and demodulates and extracts the original information loaded in them to obtain effective data. Its demodulation accuracy directly determines the information parsing capability of the receiving link and ensures the effective use of the received signal.

[0060] The signal modulation module generates multiple radio frequency signals that meet the preset frequency band, power and modulation format requirements according to the needs of the transmission scenario, providing a high-quality signal source for the transmission link, ensuring that the radio frequency to be transmitted can accurately carry the information to be transmitted, and adapting to the transmission standards of different application scenarios.

[0061] The multiplexing and beam combining module combines multiple radio frequency signals generated by the signal modulation module into a single electrical signal, meeting the beam combining transmission requirements in the subarray-level transmission mode, reducing the number of signal channels in the transmission link, and further optimizing the transmission efficiency of the transmission link in conjunction with the path scheduling of the signal transmission and switching component 5.

[0062] The division of labor and cooperation among these modules enables the signal processing component 6 to process the combined or split RF signals in the receiving link and complete information parsing, as well as generate and integrate compliant RF signals for the transmitting link, realizing a closed loop of signal processing for the receiving and transmitting links. At the same time, its demultiplexing and beam combining functions are precisely matched with the channel-level and subarray-level mode switching of the TR component 2 and the path scheduling of the signal transmission and switching component 5, ensuring the adaptability of signal processing under different transmission modes. This solves the problems of difficult beam combining signal processing and low integration efficiency of RF signals to be transmitted in existing links. Combined with the low power consumption and high efficiency conversion characteristics of the device, it further improves the overall performance and scene coverage of the optical RF link.

[0063] For example, antenna array 1 is a broadband tightly coupled patch antenna with low profile, scalability, and broadband signal reception / transmission capability.

[0064] The low-noise amplifier, power amplifier, phase shifter, controllable attenuator, and driver chip in TR component 2 are packaged and tested using heterogeneous integration technology, and have low profile, scalability, broadband signal amplification, amplitude and phase control capabilities.

[0065] Laser array 3 consists of multiple 850nm single-mode vertical cavity surface-mount semiconductor lasers, used to complete high-efficiency electro-optic conversion of radio frequency signals, and has the advantages of low threshold, single vertical mode, wide bandwidth and scalable array.

[0066] The photodetector array 4 consists of multiple 850nm band PIN surface incident photodetectors, which are used to complete the high-efficiency photoelectric conversion of optical radio frequency signals. It has the advantages of high response, wide bandwidth and scalable array.

[0067] The optical signal transmission channel is an 850nm single-mode optical fiber, and the optical channel switching unit is an 850nm band optical fiber switching unit, which is used to realize the transmission and channel switching between various signals.

[0068] According to a second aspect of this application, an electronic device is also provided, which includes the optical radio frequency link device based on a vertical cavity surface semiconductor device as described in any of the above embodiments.

[0069] In the foregoing descriptions of the embodiments, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

Claims

1. An optical radio frequency link device based on a vertical cavity surface-mount semiconductor device, characterized in that, This includes antenna arrays, TR components, laser arrays, photodetector arrays, and signal processing components; among which, The antenna array is used for receiving or transmitting radio frequency signals; The TR component is connected to the antenna array and is used to perform preset processing on the radio frequency signals received or transmitted by the antenna array; The laser array is interconnected with the TR component and the signal processing component respectively, and is used to convert the radio frequency signal output by the TR component or the signal processing component into an optical signal. The photodetector array is interconnected with the laser array and the TR component, respectively, and is used to convert the optical signal transmitted by the laser array into a radio frequency signal and transmit it to the signal processing component or the TR component; The signal processing component is interconnected with the photodetector array and the laser array respectively, and is used to receive the radio frequency signal output by the photodetector array and demodulate the original information loaded on it; or generate a radio frequency signal that meets the transmission requirements and transmit it to the laser array.

2. The apparatus according to claim 1, characterized in that, The TR component includes a receiving processing component and a transmitting processing component. The receiving processing component is disposed between the antenna array and the laser array, and is used to perform low-noise amplification and matching processing on the radio frequency signal received by the antenna array, and transmit it to the laser array. The transmitting processing component is disposed between the photodetector array and the antenna array, and is used to perform power amplification and matching processing on the radio frequency signal output by the photodetector array, so that the amplified radio frequency signal meets the transmitting threshold of the antenna array.

3. The apparatus according to claim 2, characterized in that, The TR component includes at least a low-noise amplifier, a power amplifier, a phase shifter, a controllable attenuator, and a driver chip; wherein, The low-noise amplifier, the phase shifter, and the controllable attenuator are connected in series between the antenna array and the laser array to form the receiving and processing component; The power amplifier, the phase shifter, and the controllable attenuator are connected in series between the photodetector array and the antenna array, forming the transmission processing assembly; The driver chip is connected to the receiving processing component and the transmitting processing component respectively, and selectively turns on the working channels between the receiving processing component and the transmitting processing component and the antenna array respectively, so as to control the antenna array to switch between receiving state and transmitting state.

4. The apparatus according to claim 3, characterized in that, The TR component includes multiple sets of the receiving and processing components. The driver chip is further configured to control the antenna array and the laser array to switch between channel-level transmission mode and subarray-level transmission mode when the antenna array is in receiving mode. The channel-level transmission mode is the working mode in which the driver chip controls multiple sets of receiving and processing components to be connected and turned on one-to-one with the working channels between the multiple antenna elements in the receiving state in the antenna array and the different lasers in the laser array. The subarray-level transmission mode is the working mode in which the driving chip controls the working channels between multiple sets of receiving and processing components and multiple antenna elements in the antenna array that are in the receiving state to be connected one-to-one and combined to form a combined channel, and then connects and conducts the working channel between the combined channel and one of the lasers in the laser array.

5. The apparatus according to claim 3, characterized in that, The TR component includes multiple sets of the aforementioned transmission processing components. The driver chip is further configured to control the antenna array and the photodetector array to switch between channel-level transmission mode and subarray-level transmission mode when the antenna array is in transmission mode. The channel-level transmission mode is the working mode in which the driver chip controls multiple sets of transmission processing components to connect and conduct one-to-one with the working channels of multiple antenna elements in the antenna array that are in the transmission state and different photodetectors in the photodetector array. The subarray-level transmission mode is the working mode in which the driving chip controls the working channels between multiple sets of transmission processing components and multiple antenna elements in the antenna array that are in the transmission state to be connected one-to-one and combined to form a combined channel, and then connects and conducts the working channel between the combined channel and a photodetector in the photodetector array.

6. The apparatus according to claim 1, characterized in that, The device further includes a signal transmission and switching component, which comprises an optical signal transmission channel and an electrical signal transmission channel; wherein... The optical signal transmission channel is used to realize a one-way channel connection between the laser array and the photodetector array; The electrical signal transmission channel is used to realize unidirectional channel connection between the signal processing component and the laser array, and between the photodetector array and the signal processing component.

7. The apparatus according to claim 6, characterized in that, The signal transmission and switching component further includes an optical channel switching unit, which is used to control and switch the transmission path of the optical carrier signal among the multiple optical signal transmission channels.

8. The apparatus according to claim 7, characterized in that, The laser array consists of multiple 850nm single-mode vertical cavity surface-mount semiconductor lasers, the photodetector array consists of multiple 850nm PIN surface-mount photodetectors, the optical signal transmission channel is an 850nm single-mode optical fiber, and the optical channel switching unit is an 850nm optical fiber switching unit.

9. The apparatus according to claim 1, characterized in that, The signal processing component includes at least a demultiplexing module, a signal demodulation module, a multiplexing beam combining module, and a signal modulation module; wherein... The demultiplexing module is used to split the combined input radio frequency signal and restore it into multiple radio frequency signals; The signal demodulation module is used to demodulate and extract the original information loaded on the input multi-channel radio frequency signals; The signal modulation module is used to generate multiple radio frequency signals that meet the transmission requirements; The multiplexing and beamforming module is used to combine multiple radio frequency signals that meet the transmission requirements into a single electrical signal.

10. An electronic device, characterized in that, Includes the optical radio frequency link device based on a vertical cavity surface semiconductor device as described in any one of claims 1 to 9.

Images