CN110849470A - Signal intensity detection system, method and device - Google Patents
Signal intensity detection system, method and device Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
Abstract
The embodiment of the invention provides a system, a method and a device for detecting signal intensity, wherein the system comprises: the signal receiver is used for receiving the optical signal to be detected and converting the optical signal to be detected into a current signal; the signal detector comprises a resonant cavity and a graphene layer covering the surface of the resonant cavity; when a current signal flows through the graphene layer, the graphene layer generates heat and conducts the heat to the resonant cavity, so that the resonant mode is changed according to the heat when the resonant cavity receives the heat; and the signal intensity identification device is used for detecting and obtaining an initial resonance mode before the resonance mode of the resonant cavity is not changed according to the heat and a current resonance mode after the resonance mode is changed according to the heat, and obtaining the signal intensity of the optical signal to be detected according to the variable quantity of the current resonance mode relative to the initial resonance mode. The embodiment of the invention improves the sensitivity of signal intensity detection.
Description
Technical Field
The embodiment of the invention relates to the technical field of signal intensity detection, in particular to a signal intensity detection system, a signal intensity detection method and a signal intensity detection device.
Background
The traditional signal intensity detection method mainly utilizes a semiconductor material to absorb the photon number (photon energy is larger than the material transition energy level) contained in a signal to be detected, and then obtains the signal power (or intensity) through a transition model and parameter value, such as a visible light detector based on a silicon material, an infrared detector based on gallium arsenide and the like.
However, such devices have large volume, high cost, and strict requirements on the directivity and the spot size of the light source, and also have poor sensitivity.
Disclosure of Invention
The embodiment of the invention provides a signal intensity detection system, a signal intensity detection method and a signal intensity detection device, and aims to solve the problem that a device in the prior art is poor in sensitivity when detecting signal intensity.
In view of the foregoing problems, in a first aspect, an embodiment of the present invention provides a signal strength detection system, where the system includes:
the signal receiver is used for receiving an optical signal to be detected and converting the optical signal to be detected into a current signal;
the signal detector comprises a resonant cavity and a graphene layer covering the surface of the resonant cavity; the signal receiver and the graphene layer form a circuit loop, when the current signal flows through the graphene layer, the graphene layer generates heat and conducts the heat to the resonant cavity, so that the resonant cavity changes a resonant mode according to the heat when receiving the heat;
and the signal intensity recognition device is used for detecting and obtaining an initial resonance mode before the resonance mode of the resonance cavity is not changed according to the heat and a current resonance mode after the resonance mode is changed according to the heat, and obtaining the signal intensity of the optical signal to be detected according to the variation of the current resonance mode relative to the initial resonance mode.
In a second aspect, an embodiment of the present invention provides a signal strength detection method, where the method includes:
acquiring a current signal obtained by converting an optical signal to be detected;
when the current signal flows through a graphene layer of a signal detector, and the graphene layer generates heat and conducts the heat to a resonant cavity covered by the graphene layer, acquiring a current resonant mode of the resonant cavity after the resonant mode is changed according to the heat;
and determining the signal intensity of the optical signal to be detected according to the pre-acquired initial resonance mode and the current resonance mode before the resonance mode is not changed by the resonance cavity according to the heat.
In a third aspect, an embodiment of the present invention provides a signal strength detection apparatus, where the apparatus includes:
the first acquisition module is used for acquiring a current signal obtained by converting an optical signal to be detected;
the second acquisition module is used for acquiring a current resonance mode of the resonant cavity after the resonant mode is changed according to the heat when the current signal flows through the graphene layer of the signal detector and the graphene layer generates the heat and conducts the heat to the resonant cavity covered by the graphene layer;
and the determining module is used for determining the signal intensity of the optical signal to be detected according to the pre-acquired initial resonance mode and the current resonance mode before the resonance mode is not changed according to the heat of the resonant cavity.
In a fourth aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the signal strength detection method when executing the computer program.
In a fifth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the signal strength detection method.
The signal intensity detection system, the signal intensity detection method and the signal intensity detection device provided by the embodiment of the invention have the advantages that the signal detector comprising the resonant cavity and the graphene layer covering the surface of the resonant cavity is arranged, the graphene layer and the signal receiver for converting the received optical signal to be detected into the current signal form a circuit loop, so that when the current signal flows through the graphene layer, the graphene layer can generate heat and conduct the heat into the resonant cavity, the refractive index of the resonant cavity is changed due to the thermo-optical effect, the resonant mode is further changed, and further, when the signal intensity recognition device detects the initial resonant mode before the resonant mode of the resonant cavity is not changed and the current resonant mode after the resonant mode is changed, the signal intensity of the optical signal to be detected can be obtained according to the variation of the current resonant mode relative to the initial resonant mode, and the detection of converting the signal intensity into the variation value, thereby improving the sensitivity of signal intensity detection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a block diagram of a signal strength detection system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a signal detector according to an embodiment of the present invention;
FIG. 3 is a block diagram of a signal strength identification apparatus according to an embodiment of the present invention;
FIG. 4 is a flow chart illustrating the steps of a signal strength detection method according to an embodiment of the present invention;
FIG. 5 is a block diagram of a signal strength detection apparatus according to an embodiment of the present invention;
fig. 6 shows a block diagram of modules of an electronic device in an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, which is a schematic block diagram of a signal strength detection system according to an embodiment of the present invention, the signal strength detection system includes:
the signal receiver 11 is configured to receive an optical signal to be detected and convert the optical signal to be detected into a current signal;
the signal detector 12, wherein the signal detector 12 comprises a resonant cavity 121 and a graphene layer 122 covering the surface of the resonant cavity 121; the signal receiver 11 and the graphene layer 122 form a circuit loop, when the current signal flows through the graphene layer 122, the graphene layer 122 generates heat and conducts the heat to the resonant cavity 121, so that the resonant cavity 121 changes a resonant mode according to the heat when receiving the heat;
the signal intensity recognition device 13 is configured to detect an initial resonance mode before the resonance mode of the resonance cavity 121 is changed according to the heat and a current resonance mode after the resonance mode is changed according to the heat, and obtain the signal intensity of the optical signal to be detected according to a variation of the current resonance mode relative to the initial resonance mode.
Specifically, the graphene layer 122 is integrated on the upper surface of the resonant cavity by a mechanical stripping method or a chemical vapor deposition method, so as to achieve a better covering effect.
In addition, specifically, when the graphene layer 122 generates heat and conducts the heat to the resonant cavity, the heat conducted by the graphene layer 122 is a predetermined proportion of the generated heat. Of course, it should be noted that the specific value of the preset ratio may be determined by the characteristics of the graphene layer, and the specific value of the preset ratio is not particularly limited herein.
In addition, it should be emphasized that the initial resonance mode in this embodiment is a resonance mode relative to the current resonance mode, that is, the initial resonance mode is a resonance mode when the signal detector does not detect the current optical signal to be detected, and is not a resonance mode when the resonant cavity is completely manufactured.
The signal receiver 11 can receive optical signals from any direction and any frequency band, including ultraviolet to middle and far infrared wave bands, and convert the received optical signals to be detected into current signals, thereby realizing signal intensity detection of broadband optical signals; in addition, the graphene layer 122 in the signal detector 12 and the signal receiver 11 form a circuit loop, so that when a current signal converted by the signal receiver 11 flows through the graphene layer 122, the graphene layer 122 can generate an electrothermal effect to generate heat and conduct the heat to the covered resonant cavity 121, and at this time, the resonant cavity 121 generates the electrothermal effect due to the received heat, so that the refractive index of the resonant cavity 121 is changed, and further the resonant mode is changed; in addition, the signal recognition device 13 can detect the current resonance mode of the resonance cavity 121 after the resonance mode is changed due to heat, and can detect the initial resonance mode of the resonance cavity 121 before the resonance mode is changed due to heat, so that the heat value conducted by the graphene layer can be determined through comparative analysis of the current resonance mode and the initial resonance mode, and further, the signal intensity of the optical signal to be detected can be determined. Like this, this embodiment has realized detecting optical signal's signal strength through the variable quantity of resonant mode for signal strength detecting system has less volume, higher stability and design flexibility, and has improved the sensitivity when signal strength detects.
Specifically, the resonant cavity 121 included in the signal detector 12 is a photonic crystal resonant cavity, and certainly, in order to ensure that the resonant cavity can change the refractive index through the thermo-optical effect and further change the resonant mode, the resonant cavity is filled with a heat transfer material.
The operation of the above embodiment will be explained based on a photonic crystal resonator.
The photonic crystal resonant cavity gathers an electromagnetic field in a nanoscale range under the combined action of a total reflection effect and a Bragg scattering effect to form a resonant mode with a high quality factor. In addition, different material parameters (such as material type) and structural parameters (such as lattice constant, perturbation size and cavity thickness) can have certain influence on the resonant mode, such as changing the wavelength, phase and amplitude.
When the graphene layer conducts heat to the covered resonant cavity, the change of the temperature of the resonant cavity can cause the change of the effective refractive index of the resonant cavity. According to the resonant cavity resonance condition and the effective time domain difference method, the change of the effective refractive index of the resonant cavity can cause the change of the resonant mode parameters. Based on the principle, because the heat conducted by the graphene layer is from the current signal converted by the optical signal to be detected and the heat generated when the current signal passes through the graphene layer, and the heat conducted by the graphene layer has a one-to-one correspondence with the changed refractive index of the resonant cavity, namely the heat conducted by the graphene layer has a one-to-one correspondence with the variation of the resonant mode of the resonant cavity, the signal intensity of the optical signal to be detected can be determined by reverse-deducing through the one-to-one correspondence of the heat conducted by the graphene layer and the variation of the resonant mode of the resonant cavity and the one-to-one correspondence of the heat conducted by the graphene layer and the signal intensity of the optical signal to be detected, so that the detection of the signal intensity is converted into the detection of the variation of the resonant mode with high quality factor, and the signal intensity detection system has the characteristics of small volume, and has higher sensitivity.
Further, as shown in fig. 2, in the signal detector 12, the cavity 121 is an L3 type photonic crystal cavity.
Of course, it should be noted here that when the resonant cavity 121 is an L3 type photonic crystal resonant cavity, it is only necessary to ensure that the graphene layer 122 covers a portion of the L3 type photonic crystal resonant cavity for detecting an optical signal to be detected.
Like this, through adopting L3 type photonic crystal resonant cavity, guaranteed that the resonant cavity when receiving the heat, can be accurate change effective refractive index through the photothermal effect, and then change the resonant mode, guaranteed the resonant cavity because of the sensitivity when the heat changes the resonant mode.
In addition, further, with continued reference to fig. 2, the signal detector 12 further includes two electrodes 123 in contact with the graphene layer 122, wherein the signal receiver forms a circuit loop with the graphene layer 122 through the two electrodes 123.
Specifically, the two electrodes 123 may be grown on both sides of the graphene layer 122 by a photoresist method or a magnetron sputtering method.
Like this, graphite alkene layer 122 forms the circuit loop through two electrodes 123 and signal receiver, has guaranteed that the electric current signal that signal receiver converted and obtained can flow through graphite alkene layer 122, and then has guaranteed the detection process of the signal intensity of waiting to detect the light signal.
In addition, further, as shown in fig. 3, the signal strength identification device 13 includes a resonance mode detection module 131 and a signal processing module 132 connected; wherein the content of the first and second substances,
the resonant mode detection module 131 is configured to detect an initial resonant mode and a current resonant mode of the resonant cavity, and transmit the initial resonant mode and the current resonant mode to the signal processing module 132;
the signal processing module 132 is configured to calculate a variation of the current resonance mode with respect to the initial resonance mode, obtain a signal strength corresponding to the variation according to a preset correspondence between a resonance mode variation and a signal strength, and determine the signal strength corresponding to the variation as the signal strength of the optical signal to be detected.
Specifically, the resonant mode detection module 131 can excite the resonant cavity to generate a resonant mode, and when the resonant mode detection module 131 excites the resonant cavity to reflect the resonant mode, the resonant mode detection module 131 receives the resonant mode.
In addition, specifically, the initial resonant mode of the resonant cavity is a resonant mode when the resonant cavity does not receive heat, and the current resonant mode is a resonant mode in which the resonant mode of the resonant cavity is changed due to the received heat. In this way, the initial resonance mode and the current resonance mode are obtained through detection, so that the resonance mode variation corresponding to the heat generated by the optical signal to be detected can be determined, and the signal intensity of the optical signal to be detected can be reversely deduced according to the variation of the resonance mode.
In addition, specifically, the signal processing module may pre-store a corresponding relationship between the resonance mode variation and the signal strength, so that when the signal processing module calculates the variation of the current resonance mode relative to the initial resonance mode, the signal strength corresponding to the variation of the current resonance mode relative to the initial resonance mode can be obtained according to the corresponding relationship, that is, the signal strength of the optical signal to be detected is obtained, thereby realizing the detection of converting the detection of the signal strength into the detection of the variation of the high-quality-factor resonance mode, and improving the accuracy of the signal strength detection.
Of course, it should be noted that, when the signal processing module calculates the variation of the current resonance mode relative to the initial resonance mode, the signal processing module may also calculate the signal intensity of the optical signal to be detected according to a preset formula and the variation.
Like this, the signal strength detection system that this embodiment improves, include the resonant cavity and cover in the signal detector of the graphite alkene layer on resonant cavity surface through the setting, and graphite alkene layer and the signal receiver who is used for waiting to detect that light signal converts the electric current signal into with receiving form the circuit loop, make when electric current signal flows through graphite alkene layer, graphite alkene layer can produce the heat and conduct the heat to the resonant cavity in, thereby make the resonant cavity change the refracting index because of the thermo-optic effect, and then change the resonance mode, and then realized converting the detection of signal strength into the detection of the change value of high quality factor resonance mode, thereby sensitivity when signal strength detects has been improved.
In addition, as shown in fig. 4, a flowchart of steps of a signal strength detection method according to an embodiment of the present invention is shown, where the method includes the following steps:
step 401: and acquiring a current signal obtained by converting the optical signal to be detected.
In this step, specifically, the optical signal to be detected may be received by the signal receiver, and the optical signal to be detected may be converted into a current signal.
In addition, the optical signal to be detected can be an optical signal in any direction and in any frequency band, including ultraviolet to middle and far infrared bands.
Step 402: when a current signal flows through the graphene layer of the signal detector, and the graphene layer generates heat and conducts the heat to the resonant cavity covered by the graphene layer, the current resonant mode of the resonant cavity after the resonant mode is changed according to the heat is obtained.
In this step, specifically, when a current signal obtained by converting an optical signal to be detected is acquired, when it is detected that the current signal flows through the graphene layer of the signal detector and the graphene layer generates heat and conducts the heat to the resonant cavity covered by the graphene layer, the current resonant mode of the resonant cavity after the resonant mode is changed according to the heat can be acquired.
Specifically, the signal detector in this embodiment includes a graphene layer and a resonant cavity covered by the graphene layer. When current signal flowed through graphite alkene layer, graphite alkene layer can produce the heat to in with heat conduction to the resonant cavity, the resonant cavity can change the refracting index because of the photothermal effect this moment, and then change the resonance mode.
The principle of the resonant cavity changing the resonant mode according to heat is explained below.
Specifically, the resonant cavity focuses the electromagnetic field in a nanoscale range under the combined action of a total reflection effect and a Bragg scattering effect to form a resonant mode with a high quality factor. In addition, different material parameters (such as material type) and structural parameters (such as lattice constant, perturbation size and cavity thickness) can have certain influence on the resonant mode, such as changing the wavelength, phase and amplitude.
When the current signal flows through the graphene layer, the graphene layer generates heat due to the electric heating effect, at the moment, the graphene layer covers the resonant cavity above the resonant cavity, so that the heat is conducted to the resonant cavity covered by the graphene layer, and the change of the temperature of the resonant cavity can cause the change of the effective refractive index of the resonant cavity at the moment. According to the resonant cavity resonance condition and the effective time domain difference method, the change of the effective refractive index of the resonant cavity can cause the change of the resonant mode parameters. Based on the principle, because the heat conducted by the graphene layer is from the current signal converted by the optical signal to be detected and the heat generated when the current signal passes through the graphene layer, and the heat conducted by the graphene layer has a one-to-one correspondence with the changed refractive index of the resonant cavity, namely the heat conducted by the graphene layer has a one-to-one correspondence with the variation of the resonant mode of the resonant cavity, the signal intensity of the optical signal to be detected can be determined by reverse-deducing through the one-to-one correspondence of the heat conducted by the graphene layer and the variation of the resonant mode of the resonant cavity and the one-to-one correspondence of the heat conducted by the graphene layer and the signal intensity of the optical signal to be detected, so that the detection of the signal intensity is converted into the detection of the variation of the resonant mode with high quality factor, and the signal intensity detection system has the characteristics of small volume, and has higher sensitivity.
Step 403: and determining the signal intensity of the optical signal to be detected according to the pre-acquired initial resonance mode and the current resonance mode before the resonance mode is not changed according to the heat of the resonance cavity.
In this step, specifically, before obtaining the current resonant mode after the resonant cavity changes the resonant mode according to the heat, an initial resonant mode before the resonant cavity changes the resonant mode according to the heat needs to be obtained, that is, when the signal detector does not receive the current signal obtained by converting the current optical signal to be detected, the resonant mode of the resonant cavity in the signal detector is obtained.
It should be emphasized here that the initial resonant mode of the resonant cavity is a resonant mode relative to the current resonant mode, that is, the initial resonant mode is a resonant mode when the signal detector does not detect the current optical signal to be detected, and is not a resonant mode when the resonant cavity is completely manufactured.
Thus, when the initial resonance mode and the current resonance mode are obtained, the signal intensity of the optical signal to be detected can be determined according to the initial resonance mode and the current resonance mode.
When the signal intensity of the optical signal to be detected is determined according to the initial resonance mode and the current resonance mode, the variation of the current resonance mode relative to the initial resonance mode can be obtained; and then, according to a preset corresponding relation between the resonance mode variation and the signal intensity, acquiring the signal intensity corresponding to the variation, and determining the signal intensity corresponding to the variation as the signal intensity of the optical signal to be detected.
Specifically, the corresponding relationship between the resonance mode variation and the signal intensity is preset in this embodiment, so when the initial resonance mode and the current resonance mode are obtained, the signal intensity corresponding to the variation of the current resonance mode relative to the initial resonance mode can be determined according to the corresponding relationship, that is, the signal intensity of the optical signal to be detected is determined, thereby realizing the detection of converting the signal intensity into the detection of the variation value of the high-quality-factor resonance mode, and improving the accuracy of the signal intensity detection.
Of course, it should be noted that, when the signal processing module calculates the variation of the current resonance mode relative to the initial resonance mode, the signal processing module may also calculate the signal intensity of the optical signal to be detected according to a preset formula and the variation.
Like this, this embodiment is through acquireing the current signal that waits to detect the light signal conversion and obtain, and when current signal flows through the graphite alkene layer of signal detector, and graphite alkene layer production heat and when conducting the resonant cavity that graphite alkene layer covered with the heat, acquire the resonant cavity and change the current resonance mode behind the resonance mode according to the heat, according to the initial resonance mode before the resonant mode of the resonant cavity that acquires in advance and current resonance mode, confirm the signal intensity of waiting to detect the light signal, realized changing the detection of the change value of high quality factor resonance mode with the detection of signal intensity, the accuracy when having improved the signal intensity and detecting.
In addition, as shown in fig. 5, a block diagram of a signal strength detection apparatus according to an embodiment of the present invention is shown, where the signal strength detection apparatus includes:
a first obtaining module 501, configured to obtain a current signal obtained by converting an optical signal to be detected;
a second obtaining module 502, configured to obtain a current resonance mode of a resonant cavity after the resonant mode is changed by the resonant cavity according to heat when the current signal flows through a graphene layer of a signal detector and the graphene layer generates heat and conducts the heat to the resonant cavity covered by the graphene layer;
a determining module 503, configured to determine the signal intensity of the optical signal to be detected according to a pre-obtained initial resonance mode and the current resonance mode before the resonance mode is changed by the resonance cavity according to the heat.
Optionally, the determining module 503 includes:
an obtaining unit configured to obtain a variation amount of the current resonance mode with respect to the initial resonance mode;
and the determining unit is used for acquiring the signal intensity corresponding to the variation according to the preset corresponding relation between the resonance mode variation and the signal intensity, and determining the signal intensity corresponding to the variation as the signal intensity of the optical signal to be detected.
According to the signal intensity detection device provided by the embodiment of the invention, the current signal obtained by converting the optical signal to be detected is obtained, when the current signal flows through the graphene layer of the signal detector and the graphene layer generates heat and conducts the heat to the resonant cavity covered by the graphene layer, the current resonant mode of the resonant cavity after the resonant mode is changed according to the heat is obtained, and finally the signal intensity of the optical signal to be detected is determined according to the pre-obtained initial resonant mode and the pre-obtained current resonant mode of the resonant cavity before the resonant mode is not changed according to the heat, so that the detection of converting the signal intensity into the change value of the high-quality-factor resonant mode is realized, and the accuracy in signal intensity detection is improved.
It should be noted that, in the embodiment of the present invention, the related functional modules may be implemented by a hardware processor (hardware processor), and the same technical effect can be achieved, which is not described herein again.
In yet another embodiment of the present invention, an electronic device is provided, as shown in fig. 6, which includes a memory (memory)601, a processor (processor)602, and a computer program stored on the memory 601 and executable on the processor 602. The memory 601 and the processor 602 complete communication with each other through the bus 603. The processor 602 is configured to call program instructions in the memory 601 to perform the following method: acquiring a current signal obtained by converting an optical signal to be detected; when the current signal flows through a graphene layer of a signal detector, and the graphene layer generates heat and conducts the heat to a resonant cavity covered by the graphene layer, acquiring a current resonant mode of the resonant cavity after the resonant mode is changed according to the heat; and determining the signal intensity of the optical signal to be detected according to the pre-acquired initial resonance mode and the current resonance mode before the resonance mode is not changed by the resonance cavity according to the heat.
The electronic device provided by the embodiment of the invention can execute the specific steps in the signal intensity detection method and can achieve the same technical effect, and the specific description is not provided herein.
Further, the program instructions in the memory 601 may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In a further embodiment of the invention, a non-transitory computer readable storage medium is provided, having stored thereon a computer program which, when executed by a processor, is operative to perform the method of: acquiring a current signal obtained by converting an optical signal to be detected; when the current signal flows through a graphene layer of a signal detector, and the graphene layer generates heat and conducts the heat to a resonant cavity covered by the graphene layer, acquiring a current resonant mode of the resonant cavity after the resonant mode is changed according to the heat; and determining the signal intensity of the optical signal to be detected according to the pre-acquired initial resonance mode and the current resonance mode before the resonance mode is not changed by the resonance cavity according to the heat.
The non-transitory computer-readable storage medium provided in the embodiments of the present invention can perform specific steps in the signal strength detection method, and can achieve the same technical effects, which are not described in detail herein.
In yet another embodiment of the present invention, a computer program product is provided, the computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions that when executed by a computer perform the method of: acquiring a current signal obtained by converting an optical signal to be detected; when the current signal flows through a graphene layer of a signal detector, and the graphene layer generates heat and conducts the heat to a resonant cavity covered by the graphene layer, acquiring a current resonant mode of the resonant cavity after the resonant mode is changed according to the heat; and determining the signal intensity of the optical signal to be detected according to the pre-acquired initial resonance mode and the current resonance mode before the resonance mode is not changed by the resonance cavity according to the heat.
The computer program product provided by the embodiment of the present invention can execute specific steps in the signal strength detection method, and can achieve the same technical effect, which is not described in detail herein.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A signal strength detection system, the system comprising:
the signal receiver is used for receiving an optical signal to be detected and converting the optical signal to be detected into a current signal;
the signal detector comprises a resonant cavity and a graphene layer covering the surface of the resonant cavity; the signal receiver and the graphene layer form a circuit loop, when the current signal flows through the graphene layer, the graphene layer generates heat and conducts the heat to the resonant cavity, so that the resonant cavity changes a resonant mode according to the heat when receiving the heat;
and the signal intensity recognition device is used for detecting and obtaining an initial resonance mode before the resonance mode of the resonance cavity is not changed according to the heat and a current resonance mode after the resonance mode is changed according to the heat, and obtaining the signal intensity of the optical signal to be detected according to the variation of the current resonance mode relative to the initial resonance mode.
2. The signal strength detection system of claim 1 wherein the resonator is an L3 type photonic crystal resonator.
3. The signal strength detection system of claim 1, wherein the signal detector further comprises two electrodes in contact with the graphene layer, wherein the signal receiver forms a circuit loop with the graphene layer through the two electrodes.
4. The signal strength detection system of claim 1 wherein the signal strength identification means comprises a resonant mode detection module and a signal processing module connected; wherein the content of the first and second substances,
the resonance mode detection module is used for detecting an initial resonance mode and a current resonance mode of the resonant cavity and transmitting the initial resonance mode and the current resonance mode to the signal processing module;
the signal processing module is used for calculating the variation of the current resonance mode relative to the initial resonance mode, obtaining the signal intensity corresponding to the variation according to the preset corresponding relation between the resonance mode variation and the signal intensity, and determining the signal intensity corresponding to the variation as the signal intensity of the optical signal to be detected.
5. A method of signal strength detection, the method comprising:
acquiring a current signal obtained by converting an optical signal to be detected;
when the current signal flows through a graphene layer of a signal detector, and the graphene layer generates heat and conducts the heat to a resonant cavity covered by the graphene layer, acquiring a current resonant mode of the resonant cavity after the resonant mode is changed according to the heat;
and determining the signal intensity of the optical signal to be detected according to the pre-acquired initial resonance mode and the current resonance mode before the resonance mode is not changed by the resonance cavity according to the heat.
6. The method according to claim 5, wherein the determining the signal strength of the optical signal to be detected according to the pre-obtained initial resonant mode and the current resonant mode before the resonant cavity changes the resonant mode according to the heat comprises:
acquiring the variation of the current resonance mode relative to the initial resonance mode;
and acquiring the signal intensity corresponding to the variable quantity according to the preset corresponding relation between the variable quantity of the resonance mode and the signal intensity, and determining the signal intensity corresponding to the variable quantity as the signal intensity of the optical signal to be detected.
7. A signal strength detection apparatus, the apparatus comprising:
the first acquisition module is used for acquiring a current signal obtained by converting an optical signal to be detected;
the second acquisition module is used for acquiring a current resonance mode of the resonant cavity after the resonant mode is changed according to the heat when the current signal flows through the graphene layer of the signal detector and the graphene layer generates the heat and conducts the heat to the resonant cavity covered by the graphene layer;
and the determining module is used for determining the signal intensity of the optical signal to be detected according to the pre-acquired initial resonance mode and the current resonance mode before the resonance mode is not changed according to the heat of the resonant cavity.
8. The apparatus of claim 7, wherein the determining module comprises:
an obtaining unit configured to obtain a variation amount of the current resonance mode with respect to the initial resonance mode;
and the determining unit is used for acquiring the signal intensity corresponding to the variation according to the preset corresponding relation between the resonance mode variation and the signal intensity, and determining the signal intensity corresponding to the variation as the signal intensity of the optical signal to be detected.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the signal strength detection method according to claim 7 or 8 are implemented when the computer program is executed by the processor.
10. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the signal strength detection method according to claim 7 or 8.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114659625A (en) * | 2022-03-17 | 2022-06-24 | 电子科技大学 | Performance-adjustable bolometer based on graphene mechanical vibrator and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104597311A (en) * | 2015-01-30 | 2015-05-06 | 南京大学 | Current sensor and measuring method based on graphene-microfiber circular resonant cavity |
| CN104635019A (en) * | 2015-03-06 | 2015-05-20 | 南京大学 | High-sensitivity super-fast optical fiber current sensor based on suspension graphene and manufacturing method thereof |
| CN204989674U (en) * | 2015-05-28 | 2016-01-20 | 苏州大学 | Hot light modulator based on little loop of graphite alkene constructs |
| US20160161675A1 (en) * | 2012-03-30 | 2016-06-09 | The Trustees Of Columbia University In The City Of New York | Graphene Photonics For Resonator-Enhanced Electro-Optic Devices And All-Optical Interactions |
| CN107748007A (en) * | 2017-11-28 | 2018-03-02 | 哈尔滨理工大学 | Intensity of illumination detector based on graphene film optical fiber microcavity |
-
2018
- 2018-08-20 CN CN201810947360.0A patent/CN110849470A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160161675A1 (en) * | 2012-03-30 | 2016-06-09 | The Trustees Of Columbia University In The City Of New York | Graphene Photonics For Resonator-Enhanced Electro-Optic Devices And All-Optical Interactions |
| CN104597311A (en) * | 2015-01-30 | 2015-05-06 | 南京大学 | Current sensor and measuring method based on graphene-microfiber circular resonant cavity |
| CN104635019A (en) * | 2015-03-06 | 2015-05-20 | 南京大学 | High-sensitivity super-fast optical fiber current sensor based on suspension graphene and manufacturing method thereof |
| CN204989674U (en) * | 2015-05-28 | 2016-01-20 | 苏州大学 | Hot light modulator based on little loop of graphite alkene constructs |
| CN107748007A (en) * | 2017-11-28 | 2018-03-02 | 哈尔滨理工大学 | Intensity of illumination detector based on graphene film optical fiber microcavity |
Non-Patent Citations (1)
| Title |
|---|
| S. Q. YAN 等: "Slow-light-enhanced energy efficiency for graphene microheaters on silicon photonic crystal waveguides", 《NAT. COMMUNICATIONS》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114659625A (en) * | 2022-03-17 | 2022-06-24 | 电子科技大学 | Performance-adjustable bolometer based on graphene mechanical vibrator and preparation method thereof |
| CN114659625B (en) * | 2022-03-17 | 2023-04-25 | 电子科技大学 | Performance-adjustable bolometer based on graphene mechanical vibrator and preparation method |
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