CN115093113A - Diameter online monitoring system for drawing micro-nano optical fiber - Google Patents
Diameter online monitoring system for drawing micro-nano optical fiber Download PDFInfo
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- CN115093113A CN115093113A CN202210690677.7A CN202210690677A CN115093113A CN 115093113 A CN115093113 A CN 115093113A CN 202210690677 A CN202210690677 A CN 202210690677A CN 115093113 A CN115093113 A CN 115093113A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 73
- 238000012544 monitoring process Methods 0.000 title claims abstract description 39
- 238000012545 processing Methods 0.000 claims abstract description 42
- 238000012681 fiber drawing Methods 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 238000003860 storage Methods 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 3
- 229910052732 germanium Inorganic materials 0.000 claims description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000002121 nanofiber Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/0253—Controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/03—Drawing means, e.g. drawing drums ; Traction or tensioning devices
- C03B37/032—Drawing means, e.g. drawing drums ; Traction or tensioning devices for glass optical fibres
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Lasers (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention relates to an online diameter monitoring system for drawing a micro-nano optical fiber, and belongs to the technical field of micro-nano photonic devices. The diameter online monitoring system mainly comprises a laser light source module, an analog signal processing module, a digital signal processing module, a PC terminal and a micro-nano optical fiber drawing device. The laser light source module comprises a temperature controller, a laser and an isolator; the analog signal processing module comprises a photoelectric conversion device, a signal filtering device and a differential signal amplifying device; the digital signal processing module comprises an A/D converter, a queue storage and logic operation device. The diameter online monitoring system can realize the online monitoring of the diameter of the whole process of drawing the micro-nano optical fiber, can accurately monitor and control the diameter range of the micro-nano optical fiber to be 500nm-10 mu m, and has the diameter precision of less than 2 percent.
Description
Technical Field
The invention relates to the technical field of micro-nano photonics devices, in particular to a diameter online monitoring system for micro-nano optical fiber drawing.
Background
Optical fibers are used as a new generation of optical transmission media, and have been widely applied to the application fields of optical communication, optical sensing and the like due to the characteristics of simple manufacture, low price, quick connection and the like. In particular, micro-nano optical fibers have gradually become typical optical transmission media in the optical sensing field in recent years due to the advantages of strong evanescent field and high power density. Factors influencing the performance of the micro-nano optical fiber are various, the precise control of the diameter of the micro-nano optical fiber is an important factor, and a complete monitoring method is required to ensure the diameter precision of the drawn micro-nano optical fiber.
At present, diameter monitoring is carried out on micro-nano optical fibers mostly by adopting a CCD camera, the monitoring precision of the micro-nano optical fibers depends on the image quality to a great extent and is easily influenced by external environmental factors, so that the diameter error of the micro-nano optical fibers monitored by the method is large; and the method belongs to open-loop control, and the diameter of the required micro-nano optical fiber is difficult to accurately control. Therefore, the field needs a closed-loop diameter online monitoring device capable of being used for drawing micro-nano optical fibers.
Disclosure of Invention
The invention aims to provide a diameter online monitoring system for micro-nano optical fiber drawing, which can realize the closed-loop diameter online monitoring of the whole process of micro-nano optical fiber drawing and improve the diameter drawing precision of the micro-nano optical fiber.
In order to achieve the purpose, the invention provides the following scheme:
a diameter on-line monitoring system for drawing micro-nano optical fibers comprises: the system comprises a laser light source module, an analog signal processing module, a digital signal processing module, a PC terminal and a micro-nano optical fiber drawing device; the laser light source module comprises a temperature controller, a laser and an isolator; the analog signal processing module comprises a photoelectric conversion device, a signal filtering device and a differential signal amplifying device which are connected in sequence; the digital signal processing module comprises an A/D converter and a queue storage and logic operation device which are connected in sequence;
the temperature controller is connected with the laser; the isolator is arranged on an emergent light path of the laser; the signal light emitted by the laser enters the micro-nano optical fiber after passing through the isolator; the analog signal processing module and the digital signal processing module are sequentially arranged on an emergent light path of the micro-nano optical fiber; optical signals output by the micro-nano optical fibers sequentially enter the photoelectric conversion device, the filtering device and the differential signal amplifying device to be subjected to analog signal processing; the processed analog signals sequentially pass through the A/D converter and the queue storage and logic operation device to be processed by digital signals; inputting the processed digital signal to the PC terminal;
the PC terminal is respectively connected with the temperature controller, the laser and the micro-nano optical fiber drawing device; the micro-nano optical fiber drawing device is used for drawing the micro-nano optical fiber.
Optionally, the central wavelength range of the laser is 700nm to 1550nm, the half-wave peak width is 5nm to 15nm, and the output power is 10mW to 20 mW.
Optionally, the photoelectric conversion device includes one or more of a silicon photodiode, a germanium photodiode, an indium gallium arsenic photodiode, and a photo resistor.
Optionally, the signal filtering device includes one or more of a band-pass filter, a band-stop filter, a high-pass filter, and a low-pass filter.
Optionally, the differential signal amplifying device includes one or more of a transimpedance amplifier, a transconductance amplifier, an operational amplifier, and a lock-in amplifier.
Optionally, the a/D converter includes one or more of an integrating a/D converter, a successive approximation comparison a/D converter, a parallel comparison a/D converter, a modulation a/D converter, and a capacitor array successive approximation a/D converter.
Optionally, the queue storage and logic operation device includes one or more of an FPGA chip, an ARM chip, and a DSP chip.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a diameter on-line monitoring system for drawing micro-nano optical fibers, which comprises: the system comprises a laser light source module, an analog signal processing module, a digital signal processing module, a PC terminal and a micro-nano optical fiber drawing device; the laser light source module comprises a temperature controller, a laser and an isolator; the analog signal processing module comprises a photoelectric conversion device, a signal filtering device and a differential signal amplifying device which are connected in sequence; the digital signal processing module comprises an A/D converter and a queue storage and logic operation device which are connected in sequence; the temperature controller is connected with the laser; the isolator is arranged on an emergent light path of the laser; the signal light emitted by the laser enters the micro-nano optical fiber after passing through the isolator; the analog signal processing module and the digital signal processing module are sequentially arranged on an emergent light path of the micro-nano optical fiber; optical signals output by the micro-nano optical fiber sequentially enter the photoelectric conversion device, the filtering device and the differential signal amplifying device to be subjected to analog signal processing; the processed analog signals sequentially pass through the A/D converter and the queue storage and logic operation device to be processed by digital signals; inputting the processed digital signal to the PC terminal; the PC terminal is respectively connected with the temperature controller, the laser and the micro-nano optical fiber drawing device; the micro-nano optical fiber drawing device is used for drawing the micro-nano optical fiber. The diameter online monitoring system provided by the invention can realize the closed-loop diameter online monitoring of the whole process of micro-nano optical fiber drawing, and improve the diameter drawing precision of the micro-nano optical fiber.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a diameter online monitoring system for micro-nano optical fiber drawing provided by the invention;
fig. 2 is a test chart for performing online diameter monitoring on a micro-nano optical fiber by using the diameter online monitoring system according to the embodiment of the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The invention aims to provide a diameter online monitoring system for micro-nano optical fiber drawing, which can realize the closed-loop diameter online monitoring of the whole process of micro-nano optical fiber drawing and improve the diameter drawing precision of the micro-nano optical fiber.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic structural diagram of a diameter online monitoring system for micro-nano optical fiber drawing provided by the invention. Referring to fig. 1, the diameter on-line monitoring system of the present invention includes: the system comprises a laser light source module 1, an analog signal processing module 2, a digital signal processing module 3, a PC terminal 4 and a micro-nano optical fiber drawing device 5. Specifically, the laser light source module 1 includes a hybrid device composed of a temperature controller 101, a laser 102, and an isolator 103. The analog signal processing module 2 includes a photoelectric conversion device 201, a signal filtering device 202, and a differential signal amplifying device 203, which are connected in sequence. The digital signal processing module 3 includes an a/D converter 301 and a queue storage and logic operation device 302 connected in series.
Wherein, the temperature controller 101 is connected with the laser 102. The temperature controller 101 is mainly used for counteracting temperature drift of the laser 102 during operation, and ensuring stability of the output power of the laser. The isolator 103 is disposed in an outgoing optical path of the laser 102. The isolator 103 is mainly used to prevent scattered light in the subsequent optical path from returning to the laser 102, causing signal disturbance. The signal light emitted from the laser 102 enters the micro-nano fiber 6 after passing through the isolator 103. The analog signal processing module 2 and the digital signal processing module 3 are sequentially arranged on an emergent light path of the micro-nano optical fiber 6. The analog signal processing module 2 mainly realizes photoelectric conversion, signal filtering and differential signal amplification functions. The digital signal processing module 3 mainly realizes the functions of A/D conversion, queue storage and logic operation. The optical signals output by the micro-nano optical fiber 6 sequentially enter the photoelectric conversion device 201, the filtering device 202 and the differential signal amplifying device 203 for analog signal processing. The processed analog signal is processed by digital signal processing through the a/D converter 301 and the queue storage and logic operation device 302 in sequence. The processed digital signal is input to the PC terminal 4. The PC terminal 4 is respectively connected with the temperature controller 101, the laser 102 and the micro-nano optical fiber drawing device 5. The micro-nano optical fiber drawing device 5 is used for drawing the micro-nano optical fiber 6 under the control of the PC terminal 4.
The diameter on-line monitoring system for drawing the micro-nano optical fiber has the overall working principle that signal light is emitted by a laser light source module 1 and enters the micro-nano optical fiber 6 through coupling; an optical signal enters the analog signal processing module 2 after passing through the micro-nano optical fiber 6, firstly acts on a photoelectric conversion device 201 (usually realized by adopting a photodiode) to convert the photoelectric signal, then passes through a signal filtering device 202 to filter a noise signal, and finally passes through a differential signal amplifying device 203 (usually realized by adopting a differential signal amplifier) to amplify the analog signal; the amplified analog signal enters the digital signal processing module 3, the analog signal is firstly converted into a digital signal through the a/D converter 301, then the digital signal is stored in a register of the queue storage and logic operation device 302 in a queue storage manner, and finally corresponding operation processing is performed through a logic operation circuit in the queue storage and logic operation device 302; the digital signals after the operation processing enter the PC terminal 4 for data integration, the real-time diameter information of the micro-nano optical fiber 6 can be reflected through the data integrated by the PC terminal 4, relevant process parameters in the laser light source module 1 and the micro-nano optical fiber drawing device 5 can be further adjusted according to the feedback of the diameter information, and the diameter online monitoring of the whole-process closed loop is formed.
The central wavelength range of the laser 102 is 700nm-1550nm, the half-wave peak width is 5nm-15nm, and the output power is 10mW-20 mW. The photoelectric conversion device 201 includes one or more of a silicon photodiode, a germanium photodiode, an indium gallium arsenic photodiode, and a photo resistor. The signal filtering device 202 includes one or more of a band-pass filter, a band-stop filter, a high-pass filter, and a low-pass filter. The differential signal amplifying device 203 comprises one or more of a transimpedance amplifier, a transconductance amplifier, an operational amplifier and a phase-locked amplifier. The a/D converter 301 includes one or more of an integral a/D converter, a successive approximation a/D converter, a parallel approximation a/D converter, a modulation a/D converter, and a capacitor array successive approximation a/D converter. The queue storage and logic operation device 302 comprises one or more of an FPGA chip, an ARM chip and a DSP chip.
The diameter on-line monitoring system can accurately monitor and control the diameter of the micro-nano optical fiber, the diameter range can reach 500nm-10 mu m, and the diameter precision is less than 2%. The diameter online monitoring system disclosed by the invention adopts a full-flow closed-loop type to control the diameter of the micro-nano optical fiber, and the diameter has high precision, high consistency and high confidence. The diameter online monitoring system has a high automation function, is expected to realize batch preparation of micro-nano optical fibers, and has a wide application prospect.
The invention provides a specific embodiment of the diameter on-line monitoring system for drawing the micro-nano optical fiber.
In this embodiment, the laser source module 1 adopts a laser 102 with a central wavelength of 785nm and fiber pigtail output, a half-wave peak width of 5nm, and an output power of 15 mW. In the analog signal processing module 2, a silicon photodiode matched with the central wavelength of the laser 102 is selected as a photoelectric conversion medium, a high-pass filter is used for filtering noise signals, and a transimpedance amplifier is selected for amplifying analog signals. The digital signal processing module 3 adopts a commercial data acquisition card to perform A/D conversion, queue storage and logic operation.
When the laser works, the PC terminal 4 controls the laser 102 and the temperature controller 101 to be started, so that the output laser signal is stable and has no temperature drift; then, controlling a micro-nano optical fiber drawing device 5 by setting related drawing parameters, and finally feeding back signals to a PC terminal 4 by respectively processing analog signals and digital signals according to the change of optical signals in the drawing process; the PC terminal 4 can display the related information of the diameter of the micro-nano optical fiber in real time according to the feedback information, when the diameter of the micro-nano optical fiber reaches a preset value, the PC terminal 4 controls the micro-nano optical fiber drawing device 5 to stop, and the optical signal test in the whole micro-nano optical fiber diameter monitoring process is shown in figure 2. The diameter online monitoring system can realize the full-flow closed-loop diameter online monitoring of the micro-nano optical fiber drawing, can accurately monitor and control the diameter range of the micro-nano optical fiber to be 500nm-10 mu m, and has the diameter precision of less than 2 percent.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present invention are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the control method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. The utility model provides a diameter on-line monitoring system for receiving optic fibre drawing a little which characterized in that includes: the system comprises a laser light source module, an analog signal processing module, a digital signal processing module, a PC terminal and a micro-nano optical fiber drawing device; the laser light source module comprises a temperature controller, a laser and an isolator; the analog signal processing module comprises a photoelectric conversion device, a signal filtering device and a differential signal amplifying device which are connected in sequence; the digital signal processing module comprises an A/D converter and a queue storage and logic operation device which are connected in sequence;
the temperature controller is connected with the laser; the isolator is arranged on an emergent light path of the laser; the signal light emitted by the laser enters the micro-nano optical fiber after passing through the isolator; the analog signal processing module and the digital signal processing module are sequentially arranged on an emergent light path of the micro-nano optical fiber; optical signals output by the micro-nano optical fiber sequentially enter the photoelectric conversion device, the filtering device and the differential signal amplifying device to be subjected to analog signal processing; the processed analog signals sequentially pass through the A/D converter and the queue storage and logic operation device to be processed by digital signals; inputting the processed digital signal to the PC terminal;
the PC terminal is respectively connected with the temperature controller, the laser and the micro-nano optical fiber drawing device; the micro-nano optical fiber drawing device is used for drawing the micro-nano optical fiber.
2. The diameter on-line monitoring system as claimed in claim 1, wherein the laser center wavelength range is 700nm-1550nm, the half-wave peak width is 5nm-15nm, and the output power is 10mW-20 mW.
3. The diameter online monitoring system according to claim 1, wherein the photoelectric conversion device comprises one or more of a silicon photodiode, a germanium photodiode, an indium gallium arsenic photodiode, and a photoresistor.
4. The diameter on-line monitoring system according to claim 1, wherein the signal filtering device comprises one or more of a band-pass filter, a band-stop filter, a high-pass filter and a low-pass filter.
5. The diameter online monitoring system according to claim 1, wherein the differential signal amplifying device comprises one or more of a transimpedance amplifier, a transconductance amplifier, an operational amplifier and a phase-locked amplifier.
6. The diameter on-line monitoring system according to claim 1, wherein the A/D converter comprises one or more of an integral type A/D converter, a successive comparison type A/D converter, a parallel comparison type A/D converter, a modulation type A/D converter and a capacitor array successive comparison type A/D converter.
7. The diameter on-line monitoring system of claim 1, wherein the queue storage and logic operation device comprises one or more of an FPGA chip, an ARM chip and a DSP chip.
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| CN202210690677.7A CN115093113B (en) | 2022-06-17 | 2022-06-17 | Diameter online monitoring system for micro-nano optical fiber drawing |
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| CN202210690677.7A CN115093113B (en) | 2022-06-17 | 2022-06-17 | Diameter online monitoring system for micro-nano optical fiber drawing |
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2022
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