CN113324570B - Sensing device based on balloon-shaped optical fiber MZI and manufacturing method of balloon-shaped optical fiber MZI sensor - Google Patents
Sensing device based on balloon-shaped optical fiber MZI and manufacturing method of balloon-shaped optical fiber MZI sensor Download PDFInfo
- Publication number
- CN113324570B CN113324570B CN202110618027.7A CN202110618027A CN113324570B CN 113324570 B CN113324570 B CN 113324570B CN 202110618027 A CN202110618027 A CN 202110618027A CN 113324570 B CN113324570 B CN 113324570B
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- fiber
- spherical structure
- sensor
- single mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 164
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000005253 cladding Methods 0.000 claims abstract description 19
- 239000000835 fiber Substances 0.000 claims description 110
- 238000000034 method Methods 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 7
- 239000011247 coating layer Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 230000004927 fusion Effects 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000003595 spectral effect Effects 0.000 claims 1
- 238000001228 spectrum Methods 0.000 abstract description 16
- 230000035945 sensitivity Effects 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000000411 transmission spectrum Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 238000010183 spectrum analysis Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229940085805 fiberall Drugs 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
- G01D5/35306—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement
- G01D5/35329—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using interferometer with two arms in transmission, e.g. Mach-Zender interferometer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Transform (AREA)
Abstract
The invention discloses a sensing device based on a balloon-shaped optical fiber MZI and a manufacturing method of the balloon-shaped optical fiber MZI sensor, which are characterized in that: the gas-bulb-shaped optical fiber MZI sensor is composed of a single-mode optical fiber, a first optical fiber spherical structure, a capillary tube and a second optical fiber spherical structure, the first optical fiber spherical structure and the second optical fiber spherical structure are respectively arranged on the two sides of the single-mode optical fiber, the two ends of the single-mode optical fiber are installed on the capillary tube, a broadband light source is connected with the capillary tube input end of the gas-bulb-shaped optical fiber MZI sensor through the first single-mode optical fiber, and the capillary tube output end of the gas-bulb-shaped optical fiber MZI sensor is connected with a spectrum analyzer through the second single-mode optical fiber. The invention has the advantages of small volume, convenient manufacture, low cost, strong reliability and the like, can solve the problem that light in the traditional balloon-shaped optical fiber sensor leaks into the environment from the cladding, effectively improves the sensitivity of the sensor, and can realize high-sensitivity measurement of the refractive index and the temperature.
Description
Technical Field
The invention belongs to the technical field of optical fiber sensing, and particularly relates to a sensing device based on a balloon-shaped optical fiber MZI and a manufacturing method of the balloon-shaped optical fiber MZI sensor.
Background
In 1966, british China scientist Gao Kun proposed the theory for optical fiber (fiber) transmission of optical signals for the first time, under the guidance of which the first low loss optical fiber was drawn by the Corning company in 1970. In the same year, semiconductor lasers have been reported to operate continuously at room temperature. From this time, fiber optic technology has entered the golden phase of rapid development. The optical fiber sensing technology comes along, and compared with the traditional electric sensor, the optical fiber sensor has the unique advantages of corrosion resistance, electromagnetic interference resistance, small size, high sensitivity and the like. Therefore, the physical quantity sensing widely used in various fields generally includes physical quantities such as solution concentration, gas concentration, humidity, ph, and magnetic field. Among many optical fiber sensors, the mach-zehnder interferometer (MZI) sensor has been developed rapidly due to its unique advantages of simple fabrication, good stability, compact structure, high sensitivity, etc., and has been applied to the sensing fields of temperature, refractive index, strain, magnetic field, etc. In practical applications, temperature and refractive index are common physical quantities, and therefore it is crucial to effectively measure refractive index and temperature with a sensor. Over the last several decades, various fiber configurations have been proposed by many researchers to effectively measure ambient refractive index and temperature. According to the prior literature report, in order to improve the sensitivity of the sensor, the refractive index sensing is carried out by adopting a bending and tapering device based on a single mode optical fiber, a multimode optical fiber and a polarization maintaining elliptical core optical fiber. Furthermore, bending the fiber into a U-shape or etching the bent fiber with other material coatings has also proven to be an effective method to achieve high sensitivity. However, these sensors are not only expensive and complicated manufacturing processes, but also the optical fibers are easily broken during the manufacturing process. Therefore, practical application of the sensor remains a challenge.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a sensing device based on a balloon-shaped optical fiber MZI and a manufacturing method of the balloon-shaped optical fiber MZI sensor aiming at the defects of the prior art, the sensing device has the advantages of small volume, convenience in manufacturing, low cost, strong reliability and the like, the problem that light in the traditional balloon-shaped optical fiber sensor leaks into the environment from a cladding can be solved, the sensitivity of the sensor is effectively improved, and high-sensitivity measurement of the refractive index and the temperature can be realized.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a sensing device based on a balloon-shaped optical fiber MZI is characterized in that: including broadband light source, first single mode fiber, balloon shape optic fibre MZI sensor, second single mode fiber and spectral analysis appearance, balloon shape optic fibre MZI sensor constitute by single mode fiber, first optic fibre spherical structure, capillary and second optic fibre spherical structure, single mode fiber's both sides be equipped with first optic fibre spherical structure and second optic fibre spherical structure respectively, first optic fibre spherical structure and second optic fibre spherical structure quantity all be 1 ~ 3 and first optic fibre spherical structure and second optic fibre spherical structure quantity equal, the single mode fiber both ends install on the capillary, broadband light source be connected through the capillary input among first single mode fiber and the balloon shape optic fibre MZI sensor, the capillary output among the balloon shape optic fibre MZI sensor be connected with the spectral analysis appearance through second single mode fiber.
The first single mode fiber, the second single mode fiber and the single mode fiber all adopt G.652 single mode fibers, and the diameter of the fiber core is 8.2 μm and the diameter of the cladding is 125 μm.
The diameters of the first optical fiber spherical structure and the second optical fiber spherical structure in the gas sphere optical fiber MZI sensor are 200-220 μm.
The diameter of the balloon-shaped fiber MZI sensor is 12mm.
The length of the single-mode optical fiber between the first optical fiber spherical structure and the second optical fiber spherical structure in the gas sphere optical fiber MZI sensor is 2.5-3 cm.
The capillary tube in the balloon fiber MZI sensor described above has an inside diameter of 0.4mm and a length of 1.5cm.
The manufacturing method of the balloon-shaped optical fiber MZI sensor is characterized in that: the method comprises the following steps:
the method comprises the following steps: taking a single-mode optical fiber with the length of 10-15 cm, removing a coating layer at one end of the single-mode optical fiber by 3cm, and cleaning the single-mode optical fiber by alcohol;
step two: according to the length requirement, an optical fiber cutting machine is used for cutting the end face of the optical fiber flat, the optical fiber flat is placed into an optical fiber fusion splicer for discharging for multiple times after being cut flat, and the fused optical fiber is contracted into a first optical fiber spherical structure after being repeatedly discharged under the action of the surface tension of the liquid;
step three: the second optical fiber spherical structure is manufactured in the same way;
step four: removing the coating layer of a single-mode optical fiber with the length of 3cm, welding the two ends of the single-mode optical fiber between the first optical fiber spherical structure and the second optical fiber spherical structure through an optical fiber welding machine after the two ends of the single-mode optical fiber are cut flat, inserting the two ends of the welded optical fiber into the capillary tube, and fixing the sensor structure by using ultraviolet curing glue.
The optical fiber sensing device comprises a broadband light source, a first single-mode optical fiber, a balloon-shaped optical fiber MZI sensor, a second single-mode optical fiber and a spectrum analyzer, wherein the balloon-shaped optical fiber MZI sensor is connected with the broadband light source through the first single-mode optical fiber, the balloon-shaped optical fiber MZI sensor is connected with the spectrum analyzer through the second single-mode optical fiber, the broadband light source and the spectrum analyzer are respectively connected with the input and the output of the balloon-shaped optical fiber MZI sensor, the broadband light source is used for sending optical signals, and the spectrum analyzer is used for collecting transmission spectra of sensing signals; the broadband light source generates signal light, the signal light is input into the balloon-shaped optical fiber MZI sensor through the first single-mode optical fiber, and the signal light is output to the spectrum analyzer through the second single-mode optical fiber after passing through the balloon-shaped optical fiber MZI sensor; the first optical fiber spherical structure and the second optical fiber spherical structure are respectively added to two sides of the balloon-shaped optical fiber MZI sensor, which is equivalent to introducing a new MZI, so that light can be effectively prevented from leaking into the environment from a cladding, and the refractive index and the temperature sensitivity of the sensor can be improved; the sensor has the advantages of small volume, convenient manufacture, low cost, strong reliability and the like.
The working principle of the invention is as follows: when light is transmitted to a first optical fiber spherical structure of the balloon-shaped optical fiber MZI sensor through the first single-mode optical fiber, because the total reflection condition of the light is not met, a part of light can enter a cladding from a fiber core, when the light is continuously transmitted to a second optical fiber spherical structure of the balloon-shaped optical fiber MZI sensor, the light in the cladding can be coupled back to the fiber core and interferes with the light in the fiber core, a transmission spectrum can be detected through the optical spectrum analyzer, because the refractive index and the temperature change around the sensor can change the relative refractive index of the fiber core and the cladding, the wavelength of the transmission spectrum is changed, and the temperature and the refractive index change can be obtained by detecting the wavelength change of the transmission spectrum through the optical spectrum analyzer; by adopting the spherical structure, light leakage from the cladding to the environment can be effectively reduced, and the intermode interference effect is enhanced, so that the measurement sensitivity of the sensor is enhanced.
The invention has the advantages that: the method can be realized only by using common materials and equipment such as single-mode optical fibers, an optical fiber cutting machine, an optical fiber fusion splicer, a high-power microscope, capillary tubes and the like, expensive equipment such as a femtosecond laser or an optical fiber grating writing device and the like is not needed in the manufacturing process, and compared with the existing optical fiber refractive index and temperature sensor, the method has the advantages of simple manufacturing process, low cost and high sensitivity; due to the existence of the spherical structure, the problem that light leaks to the environment from the cladding in the traditional balloon-shaped optical fiber sensor can be solved, the sensitivity of the sensor is effectively improved, and the high-sensitivity measurement of the refractive index and the temperature can be realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a gas sphere MZI sensor of the invention with 1 sphere structure on each side;
FIG. 3 is a schematic diagram of a configuration of a balloon-type fiber MZI sensor of the present invention having 2 balloon-type structures on each side.
Wherein the reference numerals are: the device comprises a broadband light source 1, a first single-mode fiber 2, a balloon-shaped fiber MZI sensor 3, a single-mode fiber 31, a first fiber spherical structure 32, a capillary 33, a second fiber spherical structure 34, a second single-mode fiber 4 and a spectrum analyzer 5.
Detailed Description
The following further describes embodiments of the present invention in conjunction with the attached figures:
the first embodiment is as follows:
a sensing device based on a balloon-shaped optical fiber MZI is characterized in that: including broadband light source 1, first single mode fiber 2, balloon shape optic fibre MZI sensor 3, second single mode fiber 4 and spectral analysis appearance 5, balloon shape optic fibre MZI sensor 3 constitute by single mode fiber 31, first optic fibre spherical structure 32, capillary 33 and second optic fibre spherical structure 34, the both sides of single mode fiber 31 be equipped with first optic fibre spherical structure 32 and second optic fibre spherical structure 34 respectively, first optic fibre spherical structure 32 and second optic fibre spherical structure 34 quantity all be 1 ~ 3 and first optic fibre spherical structure 32 and second optic fibre spherical structure 34 quantity equal, single mode fiber 31 both ends install on capillary 33, broadband light source 1 connect through the capillary 33 input among first single mode fiber 2 and the balloon shape optic fibre MZI sensor 3, the capillary 33 output among the balloon shape optic fibre MZI sensor 3 be connected with spectral analysis appearance 5 through second single mode fiber 4.
Preferably, g.652 single-mode fibers are used for the first single-mode fiber 2, the second single-mode fiber 4 and the single-mode fiber 31, and the core diameter is 8.2 μm and the cladding diameter is 125 μm.
Preferably, the diameter of the first optical fiber spherical structure 32 and the second optical fiber spherical structure 34 in the balloon-shaped optical fiber MZI sensor 3 is 200 to 220 μm.
Preferably, the balloon-shaped fiber MZI sensor 3 is 12mm in diameter.
Preferably, the length of the single-mode fiber 31 between the first fiber spherical structure 32 and the second fiber spherical structure 34 in the balloon-shaped fiber MZI sensor 3 is 2.5-3 cm.
Preferably, the capillary 33 in the balloon-shaped fiber MZI sensor 3 has an inside diameter of 0.4mm and a length of 1.5cm.
Example two:
the manufacturing method of the balloon-shaped optical fiber MZI sensor is characterized in that: the method comprises the following steps:
the method comprises the following steps: taking a single-mode optical fiber 31 with the length of 10-15 cm, removing a coating layer at one end of the single-mode optical fiber 31 by 3cm, and cleaning with alcohol;
step two: according to the length requirement, an optical fiber cutting machine is used for cutting the end face of the optical fiber flat, the optical fiber flat is placed into an optical fiber fusion splicer for discharging for multiple times after being cut flat, and the fused optical fiber is repeatedly discharged under the action of the surface tension of the liquid and then shrinks into a first optical fiber spherical structure 32;
step three: the second optical fiber spherical structure 34 is manufactured in the same way;
step four: removing a coating layer of a single-mode optical fiber 31 with the length of 3cm, flattening two ends of the single-mode optical fiber, welding the single-mode optical fiber between a first optical fiber spherical structure 32 and a second optical fiber spherical structure 34 through an optical fiber welding machine, inserting two ends of the welded optical fiber into a capillary 33, and fixing a sensor structure by using ultraviolet curing glue.
The optical fiber sensing device comprises a broadband light source 1, a first single-mode optical fiber 2, a balloon-shaped optical fiber MZI sensor 3, a second single-mode optical fiber 4 and a spectrum analyzer 5, wherein the balloon-shaped optical fiber MZI sensor 3 is connected with the broadband light source 1 through the first single-mode optical fiber 2, the balloon-shaped optical fiber MZI sensor 3 is connected with the spectrum analyzer 5 through the second single-mode optical fiber 4, the broadband light source 1 and the spectrum analyzer 5 are respectively connected with the input and the output of the balloon-shaped optical fiber MZI sensor 3, the broadband light source 1 is used for sending optical signals, and the spectrum analyzer 5 is used for collecting transmission spectra of sensing signals; the broadband light source 1 generates signal light, the signal light is input into the balloon-shaped optical fiber MZI sensor 3 through the first single-mode optical fiber 2, and the signal light is output to the spectrum analyzer 5 through the second single-mode optical fiber 4 after passing through the balloon-shaped optical fiber MZI sensor 3; the first optical fiber spherical structure 32 and the second optical fiber spherical structure 34 are respectively added to two sides of the balloon-shaped optical fiber MZI sensor 3, which is equivalent to introducing a new MZI, so that light can be effectively prevented from leaking into the environment from a cladding, and the refractive index and the temperature sensitivity of the sensor can be improved; the sensor has the advantages of small volume, convenient manufacture, low cost, strong reliability and the like.
The working principle of the invention is as follows: when light is transmitted to the first optical fiber spherical structure 32 of the balloon-shaped optical fiber MZI sensor 3 through the first single-mode optical fiber 2, a part of light can enter the cladding from the fiber core because the total reflection condition of the light is not satisfied, when the light is continuously transmitted to the second optical fiber spherical structure 34 of the balloon-shaped optical fiber MZI sensor 3, the light in the cladding can be coupled back to the fiber core and interferes with the light in the fiber core, the transmission spectrum can be detected through the optical spectrum analyzer 5, the relative refractive indexes of the fiber core and the cladding can be changed due to the refractive index and temperature change around the sensor, the wavelength of the transmission spectrum can be changed, and the temperature and refractive index change can be obtained by detecting the wavelength change of the transmission spectrum through the optical spectrum analyzer 5; by adopting the spherical structure, light leakage from the cladding to the environment can be effectively reduced, and the intermode interference effect is enhanced, so that the measurement sensitivity of the sensor is enhanced.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (2)
1. A sensing device based on a balloon-shaped optical fiber MZI is characterized in that: including broadband light source (1), first single mode fiber (2), balloon shape optic fibre MZI sensor (3), second single mode fiber (4) and spectral analyzer (5), balloon shape optic fibre MZI sensor (3) constitute by single mode fiber (31), first optic fibre spherical structure (32), capillary (33) and second optic fibre spherical structure (34), the both sides of single mode fiber (31) be equipped with first optic fibre spherical structure (32) and second optic fibre spherical structure (34) respectively, first optic fibre spherical structure (32) and second optic fibre spherical structure (34) quantity all be 1 ~ 3 and first optic fibre spherical structure (32) and second optic fibre spherical structure (34) quantity equal, single mode fiber (31) both ends install on capillary (33), broadband light source (1) pass through first single mode fiber (2) and capillary (33) input in balloon shape optic fibre MZI sensor (3) and be connected with the capillary (33) input in the balloon shape optic fibre MZI sensor (3) of second single mode fiber MZI sensor (3) through first single mode fiber (2) and second single mode fiber spherical fiber (32) spherical fiber spherical structure (652), the optical fiber MZI sensor (3) spherical structure (4) of optical fiber (4) and optical fiber cladding (2) diameter are all connected to a single mode fiber (2. Mu. M and a single mode fiber analyzer (32) and a single mode fiber cladding (10. A single mode fiber (32) is connected to be connected to a single mode fiber (10. A single mode fiber (10) in a single mode fiber (10) optical fiber (10. Mu. M) and a single mode fiber cladding (10) and a single mode fiber (10) optical fiber analyzer (10) optical fiber (10) the optical fiber (10. A single mode fiber cladding (10) of optical fiber (10) the optical fiber (10) of a single mode fiber (10) the optical fiber optic fibre And the diameter of the second optical fiber spherical structure (34) is 200-220 mu m, the diameter of the air-sphere optical fiber MZI sensor (3) is 12mm, the length of the single-mode optical fiber (31) between the first optical fiber spherical structure (32) and the second optical fiber spherical structure (34) in the air-sphere optical fiber MZI sensor (3) is 2.5-3 cm, and the inner diameter of the capillary tube (33) in the air-sphere optical fiber MZI sensor (3) is 0.4mm and the length is 1.5cm.
2. A method for manufacturing a balloon-shaped fiber MZI sensor as claimed in claim 1, wherein: the method comprises the following steps:
the method comprises the following steps: taking a single-mode optical fiber (31) with the length of 10-15 cm, removing a coating layer at one end of the single-mode optical fiber (31) by 3cm, and cleaning the single-mode optical fiber with alcohol;
step two: according to the length requirement, an optical fiber cutting machine is used for cutting the end face of the optical fiber flat, the optical fiber flat is placed into an optical fiber fusion splicer for discharging for multiple times after being cut, and the molten optical fiber is repeatedly discharged under the action of the surface tension of the liquid and then shrinks into a first optical fiber spherical structure (32);
step three: reproducing a second optical fiber spherical structure (34) in the same way;
step four: removing a coating layer from a single-mode optical fiber (31) with the length of 3cm, flattening two ends of the single-mode optical fiber, welding the single-mode optical fiber between a first optical fiber spherical structure (32) and a second optical fiber spherical structure (34) through an optical fiber welding machine, inserting two ends of the welded optical fiber into a capillary tube (33), and fixing a sensor structure by using ultraviolet curing glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110618027.7A CN113324570B (en) | 2021-06-03 | 2021-06-03 | Sensing device based on balloon-shaped optical fiber MZI and manufacturing method of balloon-shaped optical fiber MZI sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110618027.7A CN113324570B (en) | 2021-06-03 | 2021-06-03 | Sensing device based on balloon-shaped optical fiber MZI and manufacturing method of balloon-shaped optical fiber MZI sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113324570A CN113324570A (en) | 2021-08-31 |
| CN113324570B true CN113324570B (en) | 2023-01-03 |
Family
ID=77419471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110618027.7A Active CN113324570B (en) | 2021-06-03 | 2021-06-03 | Sensing device based on balloon-shaped optical fiber MZI and manufacturing method of balloon-shaped optical fiber MZI sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113324570B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113777345A (en) * | 2021-09-15 | 2021-12-10 | 南京信息工程大学 | Gas-ball-shaped MZI sensor, manufacturing method thereof and sensing system based on MZI sensor |
| CN113866127B (en) * | 2021-10-26 | 2024-01-16 | 天津工业大学 | Intra-fiber micro-fluidic sensing device based on four-hole microstructure optical fiber integration |
| CN114485485B (en) * | 2022-01-28 | 2023-07-25 | 南京信息工程大学 | Balloon-shaped optical fiber interferometer-based angle sensing system and measuring method thereof |
| CN114966974A (en) * | 2022-05-20 | 2022-08-30 | 南京信息工程大学 | Sensor with microsphere array and preparation method thereof |
| CN117073866B (en) * | 2023-06-30 | 2024-05-28 | 南通大学 | Temperature sensor based on seven-core optical fiber and bowknot type and preparation method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500740B (en) * | 2016-10-21 | 2019-03-01 | 天津理工大学 | A kind of double parameter fibre optical sensors and preparation method thereof based on magnetic field and temperature |
| CN108645444A (en) * | 2018-05-14 | 2018-10-12 | 南昌航空大学 | The temperature and strain gauge of optical-fiber probe type based on single spherical welding |
| CN209147930U (en) * | 2018-07-24 | 2019-07-23 | 哈尔滨工程大学 | A kind of high-resolution single mode multimode single mode micro-displacement fibre optical sensor |
| CN209470717U (en) * | 2019-02-27 | 2019-10-08 | 中国计量大学 | It is a kind of based on cursor effect it is single fibre in MZI sensor |
| CN110031146A (en) * | 2019-05-10 | 2019-07-19 | 西安石油大学 | Based on capillary splice type fibre-optical microstructure transducer production method and measuring principle |
| CN110440840A (en) * | 2019-08-12 | 2019-11-12 | 哈尔滨理工大学 | Balloon-dislocation type full-fiber sensor production method that is a kind of while measuring temperature and displacement |
-
2021
- 2021-06-03 CN CN202110618027.7A patent/CN113324570B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113324570A (en) | 2021-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113324570B (en) | Sensing device based on balloon-shaped optical fiber MZI and manufacturing method of balloon-shaped optical fiber MZI sensor | |
| CN205691170U (en) | A kind of air pressure and the Fibre Optical Sensor of temperature simultaneously measuring | |
| CN111443313B (en) | F-P magnetic field sensor for 3D printing by utilizing two-photon femtosecond laser direct writing technology and manufacturing method thereof | |
| CN100367016C (en) | Fibre-optical temperature measuring device and measurement thereof | |
| CN110987230B (en) | Double-parameter optical fiber sensing module and system | |
| CN102226725B (en) | Inner-wall waveguide long-time cycle fiber grating sensor | |
| CN101261117A (en) | Strain sensor based on porous microstructure optical fiber | |
| CN109632133A (en) | A kind of temperature measuring device and method based on optical fiber | |
| CN109141292A (en) | A kind of fibre cladding SPR microbend sensor and its caliberating device | |
| CN111025477A (en) | Single-mode fiber and capillary fiber coupler and preparation method thereof | |
| CN202041222U (en) | In-wall waveguide long-period fiber grating sensor | |
| CN113777345A (en) | Gas-ball-shaped MZI sensor, manufacturing method thereof and sensing system based on MZI sensor | |
| KR101299135B1 (en) | Reflective probe type apparatus for detecting gas and method for detecting gas using optical fiber with hollow core | |
| CN114111857A (en) | Vernier effect based optical fiber FPI cascaded MI sensing device | |
| CN207408624U (en) | A kind of mixed type fiber coupler | |
| CN111665220B (en) | Peanut structure-based temperature interference-free M-Z type refractive index sensor | |
| CN219675124U (en) | Micro-fiber semi-coupling reflective probe structure based on refractive index sensing | |
| CN216348692U (en) | Asymmetric peanut-shaped optical fiber MZI temperature and refractive index sensing system | |
| CN112833928A (en) | Cascade macrobend and alternative single mode-multimode fiber structure temperature refractive index sensor | |
| CN216385762U (en) | Sensor and sensing experimental device based on resonant reflection waveguide and Mach-Zehnder | |
| US11054577B1 (en) | Hybrid fiber coupler and manufacturing method thereof | |
| CN115307567A (en) | Curvature sensor based on multi-core optical fiber tapering and preparation method thereof | |
| CN114894245B (en) | Sensor and sensing device based on hollow optical fiber | |
| CN113137927A (en) | Displacement sensor based on optical fiber coupling and manufacturing method thereof | |
| CN214539245U (en) | M-Z interference type refractive index sensor based on tapered coreless optical fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |