Method and system for integrated sensing and communication on same wavelength channel for optical interconnects in artificial intelligence data center
By using frequency-modulated continuous wave signals and communication signals in the optical fiber communication system with the same wavelength multiplexing and noise compensation, the problems of low spectral efficiency and sensor signal interference are solved, and efficient communication and sensing fusion is achieved.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- GUANGDONG UNIV OF TECH
- Filing Date
- 2025-04-23
- Publication Date
- 2026-07-23
AI Technical Summary
In existing technologies, multi-core fiber optic communication and sensing integrated systems have low spectral efficiency, and the sensing and detection signals are noise to the communication system, affecting communication quality.
Frequency-modulated continuous wave signals and communication signals are multiplexed on the same wavelength channel and transmitted through an optical fiber link. Noise compensation and digital signal processing are performed at the receiving end to achieve the integration of communication and sensing.
It improves the spectral efficiency of fiber optic communication systems, reduces interference from sensor signals to communication, and enables compensation for communication noise and perception of the external environment.
Smart Images
Figure CN2025090668_23072026_PF_FP_ABST
Abstract
Description
A same-wavelength channel sensing fusion method and system for a smart computing center optical interconnection TECHNICAL FIELD
[0001] The present application relates to the field of optical fiber communication and optical fiber sensing, and more particularly to a same-wavelength channel sensing fusion method and system for a smart computing center optical interconnection. BACKGROUND
[0002] In recent years, with the development of new applications such as the Internet of Things and cloud computing, network traffic has grown exponentially. Recently, AI large models such as ChatGPT have become the focus of the network, heralding the arrival of the era of smart computing. AI large models have reshaped various industries and brought great convenience to many jobs. Behind the convenient intelligence is the support of huge computing power. These new applications, especially the emergence of large models, have brought about the demand for bandwidth and computing resources, further promoting the development of smart computing center short-distance (<80 kilometers) optical fiber communication systems. From the upgrade of GPT4 with trillion parameters to GPT5 with hundred trillion parameters, only a 10-fold increase in data and parameters, the computing power needs to expand by 20 to 100 times. With the update and iteration of large models, the growing demand for computing power forces data centers to accelerate the transition to 800G, and 1.6T solutions have also begun to emerge. Under the stimulus of growing capacity demand, the scale of smart computing center optical interconnection has become increasingly large, which will inevitably bring the operation and maintenance problems of massive optical fiber infrastructure. By giving optical network transmission capabilities, integrating optical fiber communication systems and optical fiber sensing systems into the same optical fiber, it helps to build a win-win situation of sensing-assisted communication and communication-enabled sensing. Data centers use high spectral efficiency communication and sensing integrated systems, at the cost of sacrificing a small amount of communication capacity, to enhance communication with sensing, providing large-area automated operation and maintenance capabilities for data centers with increasingly large network scales, and meeting the operation and maintenance needs of massive optical fiber infrastructure. Optical fiber sensing technology transmits periodic repeated probe signals, relies on the continuous backscattering of light signals on the optical fiber to bring back the state information of the optical fiber, and realizes the detection of the environment around the optical fiber. However, the sensing probe signal is "noise" that needs to be avoided for the forward transmission communication system. Early communication and sensing integrated solutions separate the communication system and the sensing system in different wavelength channels through space division multiplexing, mode division multiplexing, and wavelength division multiplexing to avoid potential mutual influence between the communication and sensing systems.
[0003] An integrated communication and sensing system based on multi-core optical fiber utilizes different channels of the multi-core optical fiber as transmission links to construct optical signal transmission links and optical fiber sensing links respectively. For a multi-core optical fiber, two cores are selected as sensing links, and the remaining cores are used as information transmission links. For each link, at the transmitting end, this invention uses a laser to construct an N-channel optical frequency comb, which is composed of N wavelengths. In the multi-core optical fiber, two sensing cores serve as sensing fibers, and the rest are signal transmission fibers. At the output end, of the two sensing cores, the odd-numbered wavelengths of the first sensing core are output, and the even-numbered wavelengths of the second sensing core are output. After passing through an optical fiber signal amplifier, these wavelengths are coherently received with the transmitted signals in the signal transmission links. However, this method requires the use of multiple channels, resulting in a large amount of unused spectrum resources and low spectral efficiency. Summary of the Invention
[0004] The purpose of this invention is to disclose a method and system for co-wavelength channel sensing fusion for optical interconnection in intelligent computing centers, enabling more harmonious coexistence of communication and sensing.
[0005] To achieve the above objectives, this invention provides a method and system for co-wavelength channel sensing fusion for optical interconnection in intelligent computing centers, comprising:
[0006] S1: Frequency modulates the continuous signal to generate a frequency-modulated continuous wave signal; generates a communication signal; multiplexes the frequency-modulated continuous wave signal and the communication signal on the same wavelength channel and transmits them to the optical fiber link through the integrated inductive transmitter.
[0007] S2: The forward receiving end receives the forward-transmitted frequency-modulated continuous wave signal and communication signal through the optical fiber link, and obtains the receiving end frequency-modulated continuous wave signal and the receiving end communication signal; the backward receiving end receives the backscattered signal of the frequency-modulated continuous wave signal through the optical fiber link, and obtains the backscattered signal.
[0008] S3: Use the frequency-modulated continuous wave signal at the receiving end to perform noise compensation on the communication signal at the receiving end to obtain the compensated communication signal; realize communication based on the compensated communication signal; use backscattered signal to realize sensing.
[0009] Further, in step S1, the communication signal is a digital subcarrier multiplexed signal; frequency modulation of the continuous signal to generate a frequency-modulated continuous wave signal includes:
[0010] A DC signal with amplitude A is repeated for a period of t. r Frequency modulation is used to obtain a periodically swept signal as a frequency-modulated continuous wave signal, where a single period is represented as:
[0011] Where φ FM (t) represents the phase term generated by frequency modulation.
[0012] Furthermore, in step S1, when multiplexing the frequency-modulated continuous wave signal and the communication signal on the same wavelength channel, the following steps are taken: by using a digital subcarrier scheme, the number, bandwidth and position of the subcarriers are flexibly adjusted in the digital domain to reserve an appropriate spectral position for the frequency-modulated continuous wave signal, and the communication signal and the frequency-modulated continuous wave signal are fused together.
[0013] Further, in step S1, transmitting to the optical fiber link through the integrated inductive transmitter includes: before transmitting through the circulator of the integrated inductive transmitter, using an erbium-doped fiber amplifier to amplify the optical power, and using a filter to filter out the amplified spontaneous emission noise.
[0014] Further, in step S2, the forward receiving end receives the forward-transmitted frequency-modulated continuous wave signal and communication signal through the optical fiber link, and obtains the receiving end frequency-modulated continuous wave signal and receiving end communication signal by: before the forward receiving end, the received optical power is controlled by variable optical attenuation, then a coherent receiver is used to receive the forward inductive fusion signal, and the data storage oscilloscope is used to convert it into a digital signal for storage, thus obtaining the receiving end frequency-modulated continuous wave signal and receiving end communication signal.
[0015] Further, in step S2, the backscattered signal of the frequency-modulated continuous wave signal is received by the back-scattered end through the optical fiber link. The backscattered signal is obtained by: at the back-scattered end, the backscattered signal transmitted back on the optical fiber link is output through a circulator, and before reception, the optical power is enhanced by an erbium-doped fiber amplifier and the amplified spontaneous emission noise is filtered out by a filter. The external disturbance of the optical fiber under test is simulated by a piezoelectric ceramic telescopic tube. Finally, the backscattered signal light and the local oscillator light beat frequency are coherently received and digitally stored by a data acquisition card to obtain the backscattered signal.
[0016] Furthermore, step S3 includes:
[0017] The phase of the frequency-modulated continuous wave signal obtained at the receiving end is extracted, unwrapped to make it continuous, and the starting point of the frequency sweep is located; the applied φ at the transmitting end is then reconstructed by combining the frequency sweep range. FM (t) Phase term and frequency sweep descrambling. After noise compensation of the communication system using sensor signals, the forward receiver performs subsequent digital signal processing; finally, the receiver's transmission sequence is recovered.
[0018] Digital signal processing is performed on the backscattered signal. By demultiplexing, the pulses with frequency diversity are divided into multiple sub-pulses of equal bandwidth, and matched filtering is performed to compress the pulses. The strain change caused by external disturbance is proportional to the phase change of the scattered light. By monitoring the phase change, the position, magnitude and frequency of the strain applied to the optical fiber by the piezoelectric transducer can be obtained, thus realizing the perception of the external environment.
[0019] Furthermore, the duration of the sensing signal of the frequency-modulated continuous wave is the entire repetition period, that is, the effective signal duty cycle is 100%, which can make full use of time resources and reduce its peak-to-average power ratio. This solves the problem of aliasing of scattered light between adjacent periods of the frequency-modulated continuous wave. It is only necessary to satisfy the following relationship when matching the filter at the receiving end to divide the sub-pulses:
[0020] Where N is the number of sub-pulses, B is the bandwidth of the continuous wave signal, T is the loop delay, and t r The repetition period of the detection signal is given by c, where c is the speed of light.
[0021] Further, in step S3, the received communication signal is noise-compensated using the frequency-modulated continuous wave signal from the receiving end, resulting in a compensated communication signal including:
[0022] After performing frequency sweep phase positioning on the frequency-modulated continuous wave signal at the receiving end and obtaining the starting point of the frequency sweep, the phase term φ applied by the frequency modulation at the transmitting end is recovered. FM (t), and recover the periodic frequency offset modulated onto the frequency-modulated continuous wave signal, expressed as: p′(t)·exp{jφ FM (t)} =A′·exp{-jφ FM (t)+jφ PN (t)}·exp{jφ FM (t)} =A′·exp{jφ PN (t)}
[0023] Where φ PN (t) represents the phase noise of the communication system.
[0024] Furthermore, this invention also provides a co-wavelength channel sensing fusion system for optical interconnection in intelligent computing centers, including:
[0025] Transmitting module: Frequency modulates the continuous signal to generate a frequency-modulated continuous wave signal; generates a communication signal; multiplexes the frequency-modulated continuous wave signal and the communication signal on the same wavelength channel and transmits them to the fiber optic link through the integrated inductive transmitter;
[0026] Receiver module: The forward receiver receives the forward-transmitted frequency-modulated continuous wave signal and communication signal through an optical fiber link, and obtains the receiver frequency-modulated continuous wave signal and the receiver communication signal; the backward receiver receives the backscattered signal of the frequency-modulated continuous wave signal through an optical fiber link, and obtains the backscattered signal.
[0027] Communication sensing module: It uses the frequency-modulated continuous wave signal at the receiving end to perform noise compensation on the communication signal at the receiving end to obtain the compensated communication signal; it realizes communication based on the compensated communication signal; and it uses backscattered signal to realize sensing.
[0028] Compared with the prior art, the beneficial effects of the technical solution of the present invention are:
[0029] This invention achieves higher spectral efficiency in the sensing fusion system by multiplexing the frequency-modulated continuous wave (FM) signal and the communication signal on the same wavelength channel. Furthermore, using the FM FM signal as the sensing signal, which has a lower peak-to-average power ratio, makes it more suitable for sensing fusion. Simultaneously, the forward-transmitted FM FM signal can also assist communication by achieving communication noise compensation. Attached Figure Description
[0030] Figure 1 is a flowchart of the same-wavelength channel sensing fusion method for optical interconnection of intelligent computing centers as described in Embodiment 1.
[0031] Figure 2 is a schematic diagram of the implementation of the same-wavelength channel sensing fusion method for optical interconnection of intelligent computing centers as described in Embodiment 2;
[0032] Figure 3 is a block diagram of the same-wavelength channel sensing fusion system for optical interconnection of intelligent computing centers as described in Embodiment 3; Detailed Implementation
[0033] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent.
[0034] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.
[0035] Example 1:
[0036] This embodiment provides a co-wavelength channel sensing fusion method for optical interconnection in intelligent computing centers, as shown in Figure 1, including:
[0037] S1: Frequency modulates the continuous signal to generate a frequency-modulated continuous wave signal; generates a communication signal; multiplexes the frequency-modulated continuous wave signal and the communication signal on the same wavelength channel and transmits them to the optical fiber link through the integrated inductive transmitter.
[0038] S2: The forward receiving end receives the forward-transmitted frequency-modulated continuous wave signal and communication signal through the optical fiber link, and obtains the receiving end frequency-modulated continuous wave signal and the receiving end communication signal; the backward receiving end receives the backscattered signal of the frequency-modulated continuous wave signal through the optical fiber link, and obtains the backscattered signal.
[0039] S3: Use the frequency-modulated continuous wave signal at the receiving end to perform noise compensation on the communication signal at the receiving end to obtain the compensated communication signal; realize communication based on the compensated communication signal; use backscattered signal to realize sensing.
[0040] This embodiment achieves higher spectral efficiency in the sensing fusion system by multiplexing the frequency-modulated continuous wave (FM) signal and the communication signal on the same wavelength channel. Furthermore, using the FM FM signal as the sensing signal, which has a lower peak-to-average power ratio, makes it more suitable for sensing fusion. Simultaneously, the forward-transmitted FM FM signal can also enhance communication by compensating for communication noise.
[0041] Example 2:
[0042] This embodiment further discloses information based on Embodiment 1:
[0043] This embodiment provides a co-wavelength channel sensing fusion method for optical interconnection in intelligent computing centers, as shown in Figure 2.
[0044] In step S1, the communication signal is a digital subcarrier multiplexed signal; frequency modulation of the continuous signal to generate a frequency-modulated continuous wave signal includes:
[0045] A DC signal with amplitude A is repeated for a period of t. r Frequency modulation is used to obtain a periodically swept signal as a frequency-modulated continuous wave signal, where a single period is represented as:
[0046] Where φ FM (t) represents the phase term generated by frequency modulation.
[0047] In step S1, when multiplexing the frequency-modulated continuous wave signal and the communication signal on the same wavelength channel, the following steps are taken: by using a digital subcarrier scheme, the number, bandwidth and position of the subcarriers are flexibly adjusted in the digital domain to reserve an appropriate spectral position for the frequency-modulated continuous wave signal, and the communication signal and the frequency-modulated continuous wave signal are fused together.
[0048] In step S1, transmitting to the fiber optic link through the integrated inductive transmitter includes: before transmitting through the circulator of the integrated inductive transmitter, using an erbium-doped fiber amplifier to amplify the optical power, and using a filter to filter out the amplified spontaneous emission noise.
[0049] In step S2, the forward receiving end receives the forward-transmitted frequency-modulated continuous wave signal and communication signal through the optical fiber link. The process of obtaining the receiving end frequency-modulated continuous wave signal and the receiving end communication signal includes: before the forward receiving end, the received optical power is controlled by variable optical attenuation, and then a coherent receiver is used to receive the forward inductive fusion signal. The signal is then converted into a digital signal and stored by a data storage oscilloscope.
[0050] In step S2, the backscattered signal of the frequency-modulated continuous wave signal is received by the backscattered end through the optical fiber link. The backscattered signal is obtained by: at the backscattered end, the backscattered signal transmitted back on the optical fiber link is output through a circulator; before reception, the optical power is enhanced by an erbium-doped fiber amplifier and the amplified spontaneous emission noise is filtered out by a filter; the external disturbance of the fiber under test is simulated by a piezoelectric ceramic telescopic tube; finally, the backscattered signal light and the local oscillator light beat frequency are coherently received and digitally stored by a data acquisition card to obtain the backscattered signal.
[0051] Step S3 includes:
[0052] The phase of the frequency-modulated continuous wave signal obtained at the receiving end is extracted, unwrapped to make it continuous, and the starting point of the frequency sweep is located; the applied φ at the transmitting end is then reconstructed by combining the frequency sweep range. FM (t) Phase term and frequency sweep descrambling. After noise compensation of the communication system using sensor signals, the forward receiver performs subsequent digital signal processing; finally, the receiver's transmission sequence is recovered.
[0053] Digital signal processing is performed on the backscattered signal. By demultiplexing, the pulses with frequency diversity are divided into 60 sub-pulses of equal bandwidth, and matched filtering is performed to compress the pulses. The strain change caused by external disturbance is proportional to the phase change of the scattered light. By monitoring the phase change, the position, magnitude and frequency of the strain applied to the optical fiber by the piezoelectric transducer can be obtained, thus realizing the perception of the external environment.
[0054] The duration of the sensing signal for frequency-modulated continuous wave (FM continuous wave) is the entire repetition period, meaning the effective signal duty cycle is 100%. This fully utilizes time resources and reduces the peak-to-average power ratio, thus solving the problem of aliasing of scattered light between adjacent FM continuous wave periods. This can be achieved by satisfying the following relationship when dividing the sub-pulses using matched filtering at the receiver:
[0055] Where N is the number of sub-pulses, B is the bandwidth of the continuous wave signal, T is the loop delay, and t r The repetition period of the detection signal is given by c, where c is the speed of light.
[0056] Further, in step S3, the received communication signal is noise-compensated using the frequency-modulated continuous wave signal from the receiving end, resulting in a compensated communication signal including:
[0057] After performing frequency sweep phase positioning on the frequency-modulated continuous wave signal at the receiving end and obtaining the starting point of the frequency sweep, the phase term φ applied by the frequency modulation at the transmitting end is recovered. FM (t), and recover the periodic frequency offset modulated onto the frequency-modulated continuous wave signal, expressed as: p′(t)·exp{jφ FM (t)} =A′·exp{-jφ FM (t)+jφPN (t)}·exp{jφ FM (t)} =A′·exp{jφ PN (t)}
[0058] Where φ PN (t) represents the phase noise of the communication system.
[0059] This embodiment achieves higher spectral efficiency in the sensing fusion system by multiplexing the frequency-modulated continuous wave (FM) signal and the communication signal on the same wavelength channel. Furthermore, using the FM FM signal as the sensing signal, which has a lower peak-to-average power ratio, makes it more suitable for sensing fusion. Simultaneously, the forward-transmitted FM FM signal can also enhance communication by compensating for communication noise.
[0060] Example 3:
[0061] This embodiment also provides a co-wavelength channel sensing fusion system for optical interconnection in intelligent computing centers, as shown in Figure 3, including:
[0062] Transmitting module: Frequency modulates the continuous signal to generate a frequency-modulated continuous wave signal; generates a communication signal; multiplexes the frequency-modulated continuous wave signal and the communication signal on the same wavelength channel and transmits them to the fiber optic link through the integrated inductive transmitter;
[0063] Receiver module: The forward receiver receives the forward-transmitted frequency-modulated continuous wave signal and communication signal through an optical fiber link, and obtains the receiver frequency-modulated continuous wave signal and the receiver communication signal; the backward receiver receives the backscattered signal of the frequency-modulated continuous wave signal through an optical fiber link, and obtains the backscattered signal.
[0064] Communication sensing module: It uses the frequency-modulated continuous wave signal at the receiving end to perform noise compensation on the communication signal at the receiving end to obtain the compensated communication signal; it realizes communication based on the compensated communication signal; and it uses backscattered signal to realize sensing.
[0065] This embodiment achieves higher spectral efficiency in the sensing fusion system by multiplexing the frequency-modulated continuous wave (FM) signal and the communication signal on the same wavelength channel. Furthermore, using the FM FM signal as the sensing signal, which has a lower peak-to-average power ratio, makes it more suitable for sensing fusion. Simultaneously, the forward-transmitted FM FM signal can also enhance communication by compensating for communication noise.
[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. A method for co-wavelength channel sensing fusion for optical interconnection in intelligent computing centers, characterized in that, include: S1: Frequency modulation of a continuous signal to generate a frequency-modulated continuous wave signal; generate communication signals; The frequency-modulated continuous wave signal and the communication signal are multiplexed on the same wavelength channel and then transmitted to the optical fiber link through the integrated inductive transmitter. S2: The forward receiving end receives the forward-transmitted frequency-modulated continuous wave signal and communication signal through the optical fiber link, and obtains the receiving end frequency-modulated continuous wave signal and receiving end communication signal. The back-receiving end receives the backscattered signal of the frequency-modulated continuous wave signal through an optical fiber link, thus obtaining the backscattered signal; S3: Use the frequency-modulated continuous wave signal at the receiving end to perform noise compensation on the communication signal at the receiving end to obtain the compensated communication signal; realize communication based on the compensated communication signal; use backscattered signal to realize sensing.
2. The co-wavelength channel sensing fusion method for optical interconnection in intelligent computing centers according to claim 1, characterized in that, In step S1, the communication signal is a digital subcarrier multiplexed signal; frequency modulation of the continuous signal to generate a frequency-modulated continuous wave signal includes: A DC signal with amplitude A is repeated for a period of t. r Frequency modulation is used to obtain a periodically swept signal as a frequency-modulated continuous wave signal, where a single period is represented as: Where φ FM (t) represents the phase term generated by frequency modulation.
3. The co-wavelength channel sensing fusion method for optical interconnection in intelligent computing centers according to claim 1, characterized in that, In step S1, when multiplexing the frequency-modulated continuous wave signal and the communication signal on the same wavelength channel, the following steps are taken: by using a digital subcarrier scheme, the number, bandwidth and position of the subcarriers are flexibly adjusted in the digital domain to reserve an appropriate spectral position for the frequency-modulated continuous wave signal, and the communication signal and the frequency-modulated continuous wave signal are fused together.
4. The co-wavelength channel sensing fusion method for optical interconnection in intelligent computing centers according to claim 1, characterized in that, In step S1, transmitting to the fiber optic link through the integrated inductive transmitter includes: before transmitting through the circulator of the integrated inductive transmitter, using an erbium-doped fiber amplifier to amplify the optical power, and using a filter to filter out the amplified spontaneous emission noise.
5. The co-wavelength channel sensing fusion method for optical interconnection in intelligent computing centers according to claim 1, characterized in that, In step S2, the forward receiving end receives the forward-transmitted frequency-modulated continuous wave signal and communication signal through the optical fiber link. The process of obtaining the receiving end frequency-modulated continuous wave signal and the receiving end communication signal includes: before the forward receiving end, the received optical power is controlled by variable optical attenuation, and then a coherent receiver is used to receive the forward inductive fusion signal. The signal is then converted into a digital signal and stored by a data storage oscilloscope.
6. The co-wavelength channel sensing fusion method for optical interconnection in intelligent computing centers according to claim 1, characterized in that, In step S2, the backscattered signal of the frequency-modulated continuous wave signal is received by the backscattered end through the optical fiber link. The backscattered signal is obtained by: at the backscattered end, the backscattered signal transmitted back on the optical fiber link is output through a circulator; before reception, the optical power is enhanced by an erbium-doped fiber amplifier and the amplified spontaneous emission noise is filtered out by a filter; the external disturbance of the fiber under test is simulated by a piezoelectric ceramic telescopic tube; finally, the backscattered signal light and the local oscillator light beat frequency are coherently received and digitally stored by a data acquisition card to obtain the backscattered signal.
7. The co-wavelength channel sensing fusion method for optical interconnection in intelligent computing centers according to claim 1, characterized in that, Step S3 includes: The phase of the frequency-modulated continuous wave signal obtained at the receiving end is extracted, unwrapped to make it continuous, and the starting point of the frequency sweep is located; the applied φ at the transmitting end is then reconstructed by combining the frequency sweep range. FM (t) Phase term and frequency sweep, the forward receiver uses sensor signals to perform noise compensation on the communication system and then performs subsequent digital signal processing; finally, the receiver's transmission sequence is recovered. Digital signal processing is performed on the backscattered signal. By demultiplexing, the pulses with frequency diversity are divided into multiple sub-pulses of equal bandwidth, and matched filtering is performed to compress the pulses. The strain change caused by external disturbance is proportional to the phase change of the scattered light. By monitoring the phase change, the position, magnitude and frequency of the strain applied to the optical fiber by the piezoelectric transducer can be obtained, thus realizing the perception of the external environment.
8. The co-wavelength channel sensing fusion method for optical interconnection in intelligent computing centers according to claim 7, characterized in that, In step S1, the duration of the frequency-modulated continuous wave sensing signal is the entire repetition period, meaning the effective signal duty cycle is 100%. This fully utilizes time resources and reduces the peak-to-average power ratio, resolving the aliasing problem of scattered light between adjacent periods of the frequency-modulated continuous wave. This can be achieved by satisfying the following relationship when dividing the sub-pulses using matched filtering at the receiving end: Where N is the number of sub-pulses, B is the bandwidth of the continuous wave signal, T is the loop delay, and t r The repetition period of the detection signal is given by c, where c is the speed of light.
9. The co-wavelength channel sensing fusion method for optical interconnection in intelligent computing centers according to claim 1, characterized in that, In step S3, noise compensation is performed on the receiving end communication signal based on the frequency-modulated continuous wave signal from the forward receiving end, resulting in the compensated communication signal including: The frequency-sweep phase of the obtained frequency-modulated continuous wave signal is located. After obtaining the starting point of the frequency sweep, the phase term φ applied by the frequency modulation at the transmitting end is recovered. FM (t), and recover the periodic frequency offset modulated onto the frequency-modulated continuous wave signal, expressed as: p′(t)·exp{jφ FM (t)} =A′·exp{-jφ FM (t)+jφ PN (t)}·exp{jφ FM (t)} =A′·exp{jφ PN (t)} Where φ PN (t) represents the phase noise of the communication system.
10. A co-wavelength channel sensing fusion system for optical interconnection in intelligent computing centers, characterized in that: include: Transmitting module: Modulates the frequency of a continuous signal to generate a frequency-modulated continuous wave signal; generate communication signals; The frequency-modulated continuous wave signal and the communication signal are multiplexed on the same wavelength channel and then transmitted to the optical fiber link through the integrated inductive transmitter. Receiver module: The forward receiving end receives the forward-transmitted frequency-modulated continuous wave signal and communication signal through the optical fiber link, and obtains the receiving end frequency-modulated continuous wave signal and receiving end communication signal; The back-receiving end receives the backscattered signal of the frequency-modulated continuous wave signal through an optical fiber link, thus obtaining the backscattered signal; Communication sensing module: Utilizes the frequency-modulated continuous wave signal at the receiving end to perform noise compensation on the receiving end's communication signal, obtaining a compensated communication signal; and realizes communication based on the compensated communication signal. Sensing is achieved using backscattered signals.