CN114900231A - PON (passive optical network) optical power meter capable of automatically identifying wavelength and identification method thereof - Google Patents
PON (passive optical network) optical power meter capable of automatically identifying wavelength and identification method thereof Download PDFInfo
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- CN114900231A CN114900231A CN202210371098.6A CN202210371098A CN114900231A CN 114900231 A CN114900231 A CN 114900231A CN 202210371098 A CN202210371098 A CN 202210371098A CN 114900231 A CN114900231 A CN 114900231A
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- 238000001514 detection method Methods 0.000 claims description 50
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
- H04B10/2513—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/572—Wavelength control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
- H04B10/616—Details of the electronic signal processing in coherent optical receivers
- H04B10/6161—Compensation of chromatic dispersion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0083—Testing; Monitoring
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Abstract
The invention provides a PON (passive optical network) optical power meter capable of automatically identifying wavelength, which comprises a built-in interference fiber, a controllable deflection dispersion prism and a microprocessor, and is characterized in that the built-in interference fiber is in communication coupling with a branching unit, a first port of the branching unit is coupled with a first PIN (positive-intrinsic-negative) tube, the first PIN tube is electrically connected with a first circuit module, a controllable deflection dispersion prism is arranged at a second port of the branching unit, a second PIN tube is arranged at the other end of the controllable deflection dispersion prism, and the second PIN tube is electrically connected with a second circuit module; the microprocessor is electrically connected with the adjustable interference light source, the first circuit module and the second circuit module respectively, and the adjustable interference light source is matched with the built-in interference optical fiber for use.
Description
Technical Field
The invention belongs to the technical field of optical power meters, and particularly relates to a PON (passive optical network) optical power meter capable of automatically identifying wavelength and an identification method thereof.
Background
An optical power meter refers to an instrument for measuring absolute optical power or the relative loss of optical power through a length of optical fiber. In fiber optic systems, measuring optical power is the most basic, much like a multimeter in electronics; in fiber optic measurements, the optical power meter is a heavy duty, conventional meter. By measuring the absolute power of the transmitter or the optical network, one optical power meter can evaluate the performance of the optical end equipment. The use of an optical power meter in combination with a stable light source allows for measurement of connection loss, verification of continuity, and helps to assess the transmission quality of the fiber link.
With the rapid development of communication technology, optical fiber communication has occupied an irreplaceable dominant position in the communication field, the popularization of 4G technology, the maturity of 5G technology can not leave optical fiber, optical fiber is used as a link carrier as a communication means, the inherent characteristics of optical fiber are fragile and easy to break, the bending resistance and other characteristics of optical fiber are far from being superior to those of a cable, optical signals are attenuated to some extent after construction, even optical signals do not exist due to the breakage of optical fiber, meanwhile, in optical communication, in order to increase bandwidth, optical signals with a plurality of wavelengths exist in one optical fiber, the optical signals with various wavelengths are different in use scope, the transmission characteristics and the attenuation characteristics of different wavelengths in the optical fiber are also different, and the popularization of networks such as EPON, GPON, 10GPON and the like makes the measurement of optical power of different communication wavelengths imperative. The size of the optical power value is the most important means for optical cable construction and communication quality evaluation, and therefore, an optical power meter is required to be capable of identifying optical signals with different wavelengths and measuring the optical power of the optical signals with different wavelengths.
However, most of the existing optical power meters in the market cannot automatically identify the wavelength of the optical signal in the optical fiber, and can only generally test the optical power of all the wavelengths, so that the structure of the optical power meter needs to be improved to automatically identify the optical power of the optical signal with different wavelengths.
Disclosure of Invention
The invention aims to provide a PON optical power meter capable of automatically identifying wavelength and an identification method thereof.
The invention provides the following technical scheme:
a PON network optical power meter capable of automatically identifying wavelength comprises a built-in interference optical fiber, a controllable deflection dispersion prism and a microprocessor, wherein the built-in interference optical fiber is in communication coupling with a splitter, a first port of the splitter is coupled with a first PIN (personal identification number) tube, the first PIN tube is electrically connected with a first circuit module, a second port of the splitter is provided with the controllable deflection dispersion prism, the other end of the controllable deflection dispersion prism is provided with a second PIN tube, and the second PIN tube is electrically connected with a second circuit module;
the microprocessor is respectively electrically connected with the adjustable interference light source, the first circuit module and the second circuit module, and the adjustable interference light source is matched with the built-in interference optical fiber for use;
the first circuit module comprises a first signal amplifier, the input end of the first signal amplifier is electrically connected with the first PIN tube, the output end of the first signal amplifier is electrically connected with the first detection circuit, the first detection circuit is electrically connected with the first conversion circuit, and a circuit between the first signal amplifier and the first detection circuit is electrically connected with the frequency detection circuit.
Preferably, the second circuit module includes a second signal amplifier, an input end of the second signal amplifier is electrically connected to the second PIN, an output end of the second signal amplifier is electrically connected to the second detection circuit, and the second detection circuit is electrically connected to the second conversion circuit.
Preferably, the frequency detection circuit, the first conversion circuit and the second conversion circuit are all electrically connected with the microprocessor.
Preferably, the microprocessor is also electrically connected with a human-computer interaction platform, a red laser and a network cable test circuit.
Preferably, a method for using an optical power meter of a PON network capable of automatically identifying a wavelength includes the following steps:
s1, controlling the red laser to detect whether the optical fiber to be detected has a fault through the microprocessor, and controlling the network cable test circuit to detect whether the user network cable has a fault through the microprocessor;
s2, controlling the adjustable interference light source to emit interference light with different wavelengths through the microprocessor;
s3, after the interference light emitted by the adjustable interference light source enters the built-in interference optical fiber, mixing the interference light with the optical fiber signal to be measured;
s4, dividing the mixed light equally through a splitter, wherein one part of the mixed light enters a first PIN tube, and the other part of the mixed light enters a controllable deflection dispersion prism;
s41, the light entering the first PIN tube is transmitted into a first signal amplifier for amplification after the light is subjected to the photoelectric conversion action of the first PIN tube;
s411, demodulating the signal amplified by the first signal amplifier through a first detection circuit, and meanwhile, counting the frequency through a frequency detection circuit;
s412, if the light with the same wavelength as the interference light emitted by the adjustable interference light source exists in the detected light, the first detection circuit can detect the electric coherent signal converted by the interference fringe;
s413, the coherent signal is transmitted to a first conversion circuit in a sine wave mode to perform digital-to-analog conversion;
s414, transmitting the data signal processed by the frequency detection circuit and the first conversion circuit to a microprocessor for storage and processing;
s415, enabling the controllable deflection dispersion prism to deflect a corresponding angle by the microprocessor according to the frequency detected by the frequency detection circuit;
s42, the light refracted by the controllable deflection dispersion prism is an optical wavelength signal to be detected, and the optical wavelength signal irradiates a second PIN tube to perform photoelectric conversion and then enters a second signal amplifier to be amplified;
s421, processing the signal amplified by the second signal amplifier through a second detection circuit;
s422, the signal processed by the second detection circuit enters a second conversion circuit for digital-to-analog conversion;
s423, transmitting the signal converted by the second conversion circuit into a microprocessor for data processing and power calculation;
and S424, after the microprocessor calculates the power, the light power is presented to the user through the man-machine interaction platform.
The invention has the beneficial effects that: the PON network optical power meter capable of automatically identifying the wavelength and the identification method thereof realize automatic control through an embedded framework of a microprocessor, detect optical signals with different wavelengths in an optical fiber to be detected through an adjustable interference light source by utilizing an interference technology, filter the optical signals with different wavelengths through a controllable deflection dispersion prism by utilizing a dispersion deflection technology of the prism and combining a refraction principle of light, and measure and calculate the optical power of the filtered optical signals, thereby realizing automatic identification of the optical signals with different wavelengths and calculation of the optical power. This PON network optical power meter that can automatic identification wavelength can effectively improve the drawback that current optical power meter exists, is favorable to using widely.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic flow diagram of the present invention;
Detailed Description
As shown in fig. 1, a PON network optical power meter capable of automatically identifying a wavelength includes a built-in interference fiber, a controllable deflection dispersion prism, and a microprocessor, where the built-in interference fiber is communicatively coupled with a splitter, a first port of the splitter is coupled with a first PIN, the first PIN is electrically connected with a first circuit module, a second port of the splitter is provided with the controllable deflection dispersion prism, the other end of the controllable deflection dispersion prism is provided with a second PIN, and the second PIN is electrically connected with a second circuit module;
the microprocessor is respectively electrically connected with the adjustable interference light source, the first circuit module and the second circuit module, the adjustable interference light source is matched with the built-in interference optical fiber for use, and the adjustable interference light source is a multipoint adjustable interference light source;
the first circuit module comprises a first signal amplifier, the input end of the first signal amplifier is electrically connected with the first PIN tube, the output end of the first signal amplifier is electrically connected with the first detection circuit, the first detection circuit is electrically connected with the first conversion circuit, and a circuit between the first signal amplifier and the first detection circuit is electrically connected with the frequency detection circuit.
Further, the second circuit module includes a second signal amplifier, an input end of the second signal amplifier is electrically connected to the second PIN, an output end of the second signal amplifier is electrically connected to the second detection circuit, the second detection circuit is electrically connected to the second conversion circuit, and the first detection circuit and the second detection circuit have the same working principle as the conventional demodulation circuit, which is not described herein again.
Furthermore, the frequency detection circuit, the first conversion circuit and the second conversion circuit are electrically connected with the microprocessor, and the first conversion circuit and the second conversion circuit are ADC conversion circuits to realize digital-to-analog conversion function.
Furthermore, microprocessor is electric connection still has human-computer interaction platform, red laser instrument and net twine test circuit, and the human-computer interaction platform includes liquid crystal display and button, is convenient for show data, control microprocessor.
Further, a method for using the PON network optical power meter capable of automatically identifying a wavelength includes the following steps:
s1, controlling the red laser to detect whether the optical fiber to be detected has a fault through the microprocessor, and controlling the network cable test circuit to detect whether the user network cable has a fault through the microprocessor;
s2, controlling the adjustable interference light source to emit interference light with different wavelengths through the microprocessor;
s3, after the interference light emitted by the adjustable interference light source enters the built-in interference optical fiber, mixing the interference light with the optical fiber signal to be measured;
s4, dividing the mixed light equally through a splitter, wherein one part of the mixed light enters a first PIN tube, and the other part of the mixed light enters a controllable deflection dispersion prism;
s41, the light entering the first PIN tube is transmitted into a first signal amplifier for amplification after the light is subjected to the photoelectric conversion action of the first PIN tube;
s411, demodulating the signal amplified by the first signal amplifier through a first detection circuit, and meanwhile, counting the frequency through a frequency detection circuit;
s412, if the light with the same wavelength as the interference light emitted by the adjustable interference light source exists in the detected light, the first detection circuit can detect the electric coherent signal converted from the interference fringe;
s413, the coherent signal is transmitted to a first conversion circuit in a sine wave mode to perform digital-to-analog conversion;
s414, transmitting the data signal processed by the frequency detection circuit and the first conversion circuit to a microprocessor for storage and processing;
s415, enabling the controllable deflection dispersion prism to deflect a corresponding angle by the microprocessor according to the frequency detected by the frequency detection circuit;
s42, the light refracted by the controllable deflection dispersion prism is an optical wavelength signal to be detected, and the optical wavelength signal irradiates a second PIN tube to perform photoelectric conversion and then enters a second signal amplifier to be amplified;
s421, processing the signal amplified by the second signal amplifier through a second detection circuit;
s422, the signal processed by the second detection circuit enters a second conversion circuit for digital-to-analog conversion;
s423, transmitting the signal converted by the second conversion circuit into a microprocessor for data processing and power calculation;
and S424, after the microprocessor calculates the power, the light power is presented to the user through the man-machine interaction platform.
The working principle is as follows: the PON network optical power meter capable of automatically identifying the wavelength is used, a microprocessor is controlled through a human-computer interaction platform, a network cable test circuit is controlled through the microprocessor to test whether a user network cable fails or not, a red laser is controlled through the microprocessor to detect whether an optical fiber to be tested fails or not, when optical power measurement is carried out, an adjustable interference light source is controlled through the microprocessor to emit interference light with different wavelengths, the interference light emitted by the adjustable interference light source enters a built-in interference optical fiber and is mixed with an optical fiber signal to be tested, the mixed light is divided equally through a divider, one part of the mixed light enters a first PIN tube, the light entering the first PIN tube is transmitted into a first signal amplifier for amplification after the photoelectric conversion action of the first PIN tube, then demodulation is carried out through a first detection circuit, meanwhile, frequency counting is carried out through a frequency detection circuit, if light with the same wavelength as the interference light emitted by the adjustable interference light source exists in the tested light, the first detection circuit can detect an electric coherent signal converted from the interference fringe, the coherent signal is transmitted to the first conversion circuit in a sine wave mode to be subjected to digital-to-analog conversion, a data signal processed by the frequency detection circuit and the first conversion circuit is transmitted to the microprocessor to be stored and processed, and the microprocessor enables the controllable deflection dispersion prism to deflect a corresponding angle according to the frequency detected by the frequency detection circuit; and the other part of the mixed light is emitted into the controllable deflection dispersion prism, the light refracted by the controllable deflection dispersion prism is an optical wavelength signal required to be detected, the optical wavelength signal irradiates a second PIN tube for photoelectric conversion and then enters a second signal amplifier for amplification, then the optical wavelength signal is subjected to signal processing through a second detection circuit and then enters a second conversion circuit for digital-to-analog conversion, and then the optical wavelength signal is transmitted to a microprocessor for data processing and power calculation, and after the microprocessor performs power calculation, the optical power is presented to a user through a human-computer interaction platform.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A PON network optical power meter capable of automatically identifying wavelength comprises a built-in interference optical fiber, a controllable deflection dispersion prism and a microprocessor, and is characterized in that the built-in interference optical fiber is in communication coupling with a splitter, a first port of the splitter is coupled with a first PIN (positive-intrinsic-negative) transistor, the first PIN transistor is electrically connected with a first circuit module, a second port of the splitter is provided with the controllable deflection dispersion prism, the other end of the controllable deflection dispersion prism is provided with a second PIN transistor, and the second PIN transistor is electrically connected with a second circuit module;
the microprocessor is respectively electrically connected with the adjustable interference light source, the first circuit module and the second circuit module, and the adjustable interference light source is matched with the built-in interference optical fiber for use;
the first circuit module comprises a first signal amplifier, the input end of the first signal amplifier is electrically connected with the first PIN tube, the output end of the first signal amplifier is electrically connected with the first detection circuit, the first detection circuit is electrically connected with the first conversion circuit, and a circuit between the first signal amplifier and the first detection circuit is electrically connected with the frequency detection circuit.
2. A PON network optical power meter capable of automatically identifying wavelengths according to claim 1, wherein the second circuit module comprises a second signal amplifier, an input terminal of the second signal amplifier is electrically connected to the second PIN, an output terminal of the second signal amplifier is electrically connected to the second detection circuit, and the second detection circuit is electrically connected to the second conversion circuit.
3. A PON network optical power meter as claimed in claim 2, wherein the frequency detection circuit, the first conversion circuit and the second conversion circuit are all electrically connected to the microprocessor.
4. A PON network optical power meter capable of automatically identifying wavelengths as claimed in claim 1, wherein the microprocessor is further electrically connected to a human-computer interaction platform, a red laser and a network cable test circuit.
5. An identification method using the PON network optical power meter capable of automatically identifying wavelengths according to any one of claims 1 to 4, comprising the steps of:
s1, controlling the red laser to detect whether the optical fiber to be detected has a fault through the microprocessor, and controlling the network cable test circuit to detect whether the user network cable has a fault through the microprocessor;
s2, controlling the adjustable interference light source to emit interference light with different wavelengths through the microprocessor;
s3, after the interference light emitted by the adjustable interference light source enters the built-in interference optical fiber, mixing the interference light with the optical fiber signal to be measured;
s4, dividing the mixed light equally through a splitter, wherein one part of the mixed light enters a first PIN tube, and the other part of the mixed light enters a controllable deflection dispersion prism;
s41, the light entering the first PIN tube is transmitted into a first signal amplifier for amplification after the light is subjected to the photoelectric conversion action of the first PIN tube;
s411, demodulating the signal amplified by the first signal amplifier through a first detection circuit, and meanwhile, counting the frequency through a frequency detection circuit;
s412, if the light with the same wavelength as the interference light emitted by the adjustable interference light source exists in the detected light, the first detection circuit can detect the electric coherent signal converted from the interference fringe;
s413, the coherent signal is transmitted to a first conversion circuit in a sine wave mode to perform digital-to-analog conversion;
s414, transmitting the data signal processed by the frequency detection circuit and the first conversion circuit to a microprocessor for storage and processing;
s415, enabling the controllable deflection dispersion prism to deflect a corresponding angle by the microprocessor according to the frequency detected by the frequency detection circuit;
s42, the light refracted by the controllable deflection dispersion prism is an optical wavelength signal to be detected, and the optical wavelength signal irradiates a second PIN tube to perform photoelectric conversion and then enters a second signal amplifier to be amplified;
s421, processing the signal amplified by the second signal amplifier through a second detection circuit;
s422, the signal processed by the second detection circuit enters a second conversion circuit for digital-to-analog conversion;
s423, transmitting the signal converted by the second conversion circuit into a microprocessor for data processing and power calculation;
and S424, after the microprocessor calculates the power, the light power is presented to the user through the man-machine interaction platform.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210371098.6A CN114900231A (en) | 2022-04-08 | 2022-04-08 | PON (passive optical network) optical power meter capable of automatically identifying wavelength and identification method thereof |
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| CN202210371098.6A CN114900231A (en) | 2022-04-08 | 2022-04-08 | PON (passive optical network) optical power meter capable of automatically identifying wavelength and identification method thereof |
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| JPH06331495A (en) * | 1993-05-18 | 1994-12-02 | Mitsubishi Electric Corp | Device and method for measuring zero dispersion wavelength |
| WO2002056075A1 (en) * | 2001-01-12 | 2002-07-18 | Board Of Regents The University Of Texas System | Method and apparatus for differential phase optical coherence tomography |
| CN2583887Y (en) * | 2002-12-05 | 2003-10-29 | 武汉光迅科技有限责任公司 | Device for multipath wave length light-power and light frequency monitoring based on waveguide array grating |
| CN103326778A (en) * | 2013-05-09 | 2013-09-25 | 天津市德力电子仪器有限公司 | Luminous power measuring method and system for coarse wavelength division multiplexing system |
| CN111385021A (en) * | 2018-12-29 | 2020-07-07 | 上海嘉慧光电子技术有限公司 | Multi-wavelength optical power monitoring system and method based on carrier modulation |
| CN112219326A (en) * | 2018-05-22 | 2021-01-12 | 松下知识产权经营株式会社 | Power and spectral monitoring in wavelength beam combining laser systems |
| CN113552069A (en) * | 2021-01-24 | 2021-10-26 | 哈尔滨工业大学（威海） | Laser ultrasonic underwater target detection method and system based on interferometric synthetic aperture |
-
2022
- 2022-04-08 CN CN202210371098.6A patent/CN114900231A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06331495A (en) * | 1993-05-18 | 1994-12-02 | Mitsubishi Electric Corp | Device and method for measuring zero dispersion wavelength |
| WO2002056075A1 (en) * | 2001-01-12 | 2002-07-18 | Board Of Regents The University Of Texas System | Method and apparatus for differential phase optical coherence tomography |
| CN2583887Y (en) * | 2002-12-05 | 2003-10-29 | 武汉光迅科技有限责任公司 | Device for multipath wave length light-power and light frequency monitoring based on waveguide array grating |
| CN103326778A (en) * | 2013-05-09 | 2013-09-25 | 天津市德力电子仪器有限公司 | Luminous power measuring method and system for coarse wavelength division multiplexing system |
| CN112219326A (en) * | 2018-05-22 | 2021-01-12 | 松下知识产权经营株式会社 | Power and spectral monitoring in wavelength beam combining laser systems |
| CN111385021A (en) * | 2018-12-29 | 2020-07-07 | 上海嘉慧光电子技术有限公司 | Multi-wavelength optical power monitoring system and method based on carrier modulation |
| CN113552069A (en) * | 2021-01-24 | 2021-10-26 | 哈尔滨工业大学（威海） | Laser ultrasonic underwater target detection method and system based on interferometric synthetic aperture |
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