CN107941372A - The method that photonic crystal fiber Fabry Perot temperature sensors are prepared based on femtosecond laser - Google Patents
The method that photonic crystal fiber Fabry Perot temperature sensors are prepared based on femtosecond laser Download PDFInfo
- Publication number
- CN107941372A CN107941372A CN201711216213.8A CN201711216213A CN107941372A CN 107941372 A CN107941372 A CN 107941372A CN 201711216213 A CN201711216213 A CN 201711216213A CN 107941372 A CN107941372 A CN 107941372A
- Authority
- CN
- China
- Prior art keywords
- photonic crystal
- crystal fiber
- fiber
- temperature sensors
- femtosecond laser
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
Abstract
The present invention provides a kind of method that photonic crystal fiber Fabry Perot temperature sensors are prepared based on femtosecond laser, inscribed by the way of femtosecond laser line on photonic crystal fiber, the refractive index at F P chambers both ends is only changed on the basis of F P cavity configurations are retained, with the structure of minimal destruction photonic crystal fiber, the influence to Characteristics of Photonic Crystal Fiber is smaller.The present invention selects photonic crystal fiber, and compared to traditional fiber, the excellent characteristic of photonic crystal fiber breaches the optical limitation of traditional fiber, has expanded the application range of optical fiber；The sensor component being prepared is simple in structure, and stability is reliable, and can prepare as requested different cavity length, different reflectance factor inside of optical fibre speculum device；The preparation method of the present invention need not be expensive mask, cost is relatively low, repeated height, it is easy to accomplish the batch machining of device.
Description
Technical field
The present invention relates to field of fiber optics, more particularly to one kind prepares photonic crystal fiber Fabry- based on femtosecond laser
Perot temperature sensors.
Background technology
Fibre optical sensor is with many good characteristics, it can be achieved that the measurement work under complex environment should with very extensive
With value.It has the characteristics that electromagnetism interference, radioresistance, high sensitivity, light-weight, insulation explosion-proof, corrosion-resistant, and optical fiber ruler
It is very little small, there is good optical transmission performance.In various types of fibre optical sensors, it is interference-type light that precision is highest at present
Fiber sensor.Wherein optical fibre Fabry-perot temperature sensor (i.e. F-P) sensor is because only with an optical fiber and body simple in structure
Product is small, dynamic range is big, is received significant attention in biomedicine, magnetic field, MEMS.
Fibre-optical F-P sensor mainly includes two major class of extrinsic type and Intrinsical.The fiber F-P sensing of extrinsic type structure
Device is that the non-optical fiber original paper for having reflecting surface structure using optical fiber and one forms；The processing method of Intrinsical fiber F-P structure
Generally by optical fiber both ends of the surface plated film, it is made by encapsulating or docking, but since the diameter of optical fiber is in micron dimension, Coating Materials
It is difficult to select, plated film difficulty is big, and needs to accurately control coated optical fibre and accurate connection optical fiber to subtract in encapsulation or docking
Small coupling loss, operation difficulty are big.For the fibre-optical F-P sensor to be formed is inscribed using femtosecond, when femtosecond laser focuses on light
When on long and slender core, material character can be made to change, its refractive index is changed, and the surface of optical fiber will not be subject to any shadow
Ring.
The characteristics of photonic crystal fiber is maximum is made of all to be made of completely vitreous silica, covering and fibre core quartz,
But exist in covering by the evenly distributed airport of angular distribution.Compared to traditional fiber, photonic crystal fiber shows many
Very excellent characteristic：Single mode transport characteristic without cutoff wavelength, good dispersion properties, high birefringence characteristic, big mode field
Product, high non-linearity effect.Photonic crystal fiber is also easy to realize that multicore transmits, and can be fabricated to the photonic crystal light of large aperture
It is fine.These characteristics breach the optical limitation of traditional fiber, have expanded the application range of optical fiber, opto-electronic device, it is ultrafast and
The fields such as optics, optic communication, microoptoelectronics and field strength physics open new research direction.
Compared with other optical fiber, the sensor prepared with photonic crystal fiber is less susceptible to electromagnetic interference, photonic crystal light
Fibre is pure quartz construction, and other fiber cores have and different degrees of mix germanium component；Photonic crystal fiber without cutoff wavelength
Single mode transport effect can increase single mode transport wave-length coverage, expand the detection range of Photonic Crystal Fiber Sensor；Photon
The good dispersion properties of crystal optical fibre make fibre core and covering in mechanics and can thermodynamically match completely, the folding of fibre core and covering
The rate difference of penetrating will not be restricted because of the incompatibility of material, so as to obtain larger dispersion in very big wave-length coverage.
Different inscription modes can destroy the structure of photonic crystal fiber in various degree, lose photonic crystal fiber peculiar
Advantage.F-P cavity structure is made on the photonic crystal fiber using femtosecond laser, wherein F-P cavity body structure is not destroyed,
The refractive index at F-P cavity both ends is changed simply by line, the influence to Characteristics of Photonic Crystal Fiber is smaller.
Inscribed therefore, it is necessary to one kind using femtosecond laser mode in photonic crystal fiber and make photonic crystal fiber Fabry-
The method of Perot temperature sensors.
The content of the invention
Photonic crystal fiber Fabry- is prepared based on femtosecond laser in order to solve the above technical problem, the present invention provides one kind
The method of Perot temperature sensors, includes the following steps：
Using photonic crystal fiber, the femtosecond laser of femto-second laser is focused on to the fibre core of the photonic crystal fiber
On, and perpendicular to optical fiber axial direction；Then the femtosecond laser is radially rule back and forth on the photonic crystal fiber, obtains two
A depth reaches the internal mirror of fiber core, the photonic crystal fiber structure between described two internal mirrors and speculum
Into F-P cavity structure, so that photonic crystal fiber Fabry-Perot temperature sensors be made.
Photonic crystal fiber has many characteristics, and different inscription modes can destroy the knot of photonic crystal fiber in various degree
Structure, makes photonic crystal fiber lose distinctive advantage.The F-P cavity structure that the inscription mode of the present invention obtains is not destroyed, simply
The refractive index at F-P cavity both ends is changed by line, the influence to Characteristics of Photonic Crystal Fiber is smaller.
Preferably, the length of line is more than fibre core diameter, and the complete of fiber core is inscribed with realizing.
Preferably, the distance of two internal mirrors of the F-P cavity is 50~6000 μm, its interference effect is best.
Preferably, the centre wavelength of the femto-second laser is 800nm, pulse width 120fs, and repetition rate is
1kHz。
It is highly preferred that the femto-second laser uses titanium sapphire femto-second laser.
The invention has the advantages that：
1st, Intrinsical F-P temperature sensors, simple and fast are prepared by the way of femtosecond inscription.
2nd, photonic crystal fiber is selected, compared to traditional fiber, the excellent characteristic of photonic crystal fiber breaches traditional fiber
Optical limitation, has expanded the application range of optical fiber.
3rd, the sensor component being prepared is simple in structure, and stability is reliable, and can prepare as requested different cavity length,
The device of the inside of optical fibre speculum of different reflectance factors.
4. the mask that the preparation method of the present invention need not be expensive, cost is relatively low, repeated height, it is easy to accomplish device
Batch machining.
It should be appreciated that foregoing description substantially and follow-up description in detail are exemplary illustration and explanation, should not
As the limitation to the claimed content of the present invention.
Brief description of the drawings
With reference to the attached drawing enclosed, the present invention more purpose, function and advantages will pass through the as follows of embodiment of the present invention
Description is illustrated, wherein：
Fig. 1 shows the structure for the photonic crystal fiber Fabry-Perot temperature sensors that the present invention is prepared
Schematic diagram.
Fig. 2 shows the photonic crystal fiber Fabry-Perot temperature sensors testing temperature system structure diagram.
Fig. 3 shows the interference spectrogram of the photonic crystal fiber Fabry-Perot temperature sensors at different temperatures.
Fig. 4 is shown the photonic crystal fiber Fabry-Perot temperature sensors are demarcated after, obtained ripple
Length-temperature curve figure.
Embodiment
By reference to one exemplary embodiment, the purpose of the present invention and function and the side for being used for realization these purposes and function
Method will be illustrated.However, the present invention is not limited to one exemplary embodiment as disclosed below；Can by multi-form come
It is realized.The essence of specification is only to aid in the detail of the various equivalent modifications Integrated Understanding present invention.
Hereinafter, the embodiment of the present invention will be described with reference to the drawings.In the accompanying drawings, identical reference numeral represents identical
Or similar component, or same or like step.
Referring to Fig. 1, a kind of method that photonic crystal fiber Fabry-Perot temperature sensors are prepared based on femtosecond laser,
Include the following steps：
Using photonic crystal fiber, the femtosecond laser of femto-second laser is focused on to the fibre core of the photonic crystal fiber
On, and perpendicular to optical fiber axial direction；Then the femtosecond laser is radially rule back and forth on the photonic crystal fiber, obtains two
A depth reaches the internal mirror of fiber core, and the optical fiber between described two internal mirrors and transmitting mirror forms F-P cavity
Structure, so that photonic crystal fiber Fabry-Perot temperature sensors are made, as shown in Figure 1.
Specifically, the length of line is more than fibre core diameter, and the complete of fiber core is inscribed with realizing.The F-P
The distance of two internal mirrors of chamber is 50~6000 μm, its interference effect is best.The femto-second laser is using relevant public affairs
Take charge of the titanium sapphire femto-second laser of production, centre wavelength 800nm, pulse width 120fs.
As shown in Fig. 2, being the optical fiber Intrinsical F-P temperature sensor testing temperature systems, which includes：Wideband light source
1st, general single mode fiber 2, photonic crystal fiber Fabry-Perot temperature sensors 3, heating platform 4, fiber optical circulator 5, optical fiber
Analyzer 6 is sensed, the photonic crystal fiber Fabry-Perot temperature sensors are pasted onto on the heating platform, pass through light
Fine circulator is connected with optical fiber sensing analyzer.
Wherein, the optical fiber sensing analyzer is used for the collection for carrying out reflectance spectrum, and specifically, the fiber optical circulator will
The reflection interference spectrum of the fiber F-P cavity of the sensor is transmitted to the optical fiber sensing analyzer.
Wherein, the optical fiber sensing analyzer uses the optical fiber sensing analyzer of Yokogawa companies production.
The heating platform is used for the temperature level for changing the photonic crystal fiber Fabry-Perot temperature sensors.
, it is necessary to which the problem of overcoming is single mode optical fiber and light in the optical fiber Intrinsical F-P temperature sensor testing temperature systems
The welding problem of photonic crystal fiber：In welding such as discharge capacity is crossed conference generation gas and is collapsed.The present invention solution be：It is logical
Cross reduction discharge capacity and adjust discharge position and energy is gathered in general single mode fiber more and is sentenced and avoid or reduce gas as far as possible
Body collapses.
It is the interference spectrum of the photonic crystal fiber Fabry-Perot temperature sensors at different temperatures shown in Fig. 3
Figure, as seen from the figure：When ambient temperature changes, reflectance spectrum spectral line can translate, as shown in figure 3,3 spectral lines are respectively
The interference spectrum in the range of F-P sensors 1520nm~1610nm when temperature is 50 DEG C, 100 DEG C, 150 DEG C.Show：The sensor
Structure it is feasible.
Fig. 4 is shown photonic crystal fiber Fabry-Perot temperature sensors are demarcated after, obtained wavelength-temperature
Relation curve is spent, in the range of 50 DEG C~400 DEG C, at interval of 50 DEG C of application temperature, wavelength during relevant temperature is recorded, draws ripple
Length-temperature curve, as seen from the figure：The sensor has the good linearity.
The present invention is inscribed by the way of femtosecond laser line on photonic crystal fiber, is retaining the base of F-P cavity structure
The refractive index at F-P cavity both ends is only changed on plinth, with the structure of minimal destruction photonic crystal fiber, to photonic crystal light
The influence of fine characteristic is smaller.The present invention selects photonic crystal fiber, and compared to traditional fiber, the excellent characteristic of photonic crystal fiber is dashed forward
The optical limitation of traditional fiber has been broken, has expanded the application range of optical fiber；The sensor component being prepared is simple in structure, stablizes
Property it is reliable, and can prepare as requested different cavity length, different reflectance factor inside of optical fibre speculum device；The present invention's
Preparation method need not be expensive mask, cost is relatively low, repeated height, it is easy to accomplish the batch machining of device.
With reference to the explanation of the invention disclosed here and practice, the other embodiment of the present invention is for those skilled in the art
It all will be readily apparent and understand.Illustrate and embodiment is regarded only as being exemplary, true scope of the invention and purport are equal
It is defined in the claims.
Claims (5)
- A kind of 1. method that photonic crystal fiber Fabry-Perot temperature sensors are prepared based on femtosecond laser, it is characterised in that Include the following steps：Using photonic crystal fiber, the femtosecond laser of femto-second laser is focused on the fibre core of the photonic crystal fiber, and Perpendicular to optical fiber axial direction；Then the femtosecond laser is radially rule back and forth on the photonic crystal fiber, is obtained two depth and is reached optical fiber fibre The internal mirror of core, the optical fiber between described two internal mirrors and speculum forms F-P cavity structure, so that photon be made Crystal optical fibre Fabry-Perot temperature sensors.
- 2. the method according to claim 1 for preparing photonic crystal fiber Fabry-Perot temperature sensors, its feature exist In the length of line is more than fibre core diameter, and the complete of fiber core is inscribed with realizing.
- 3. the method according to claim 1 for preparing photonic crystal fiber Fabry-Perot temperature sensors, its feature exist In the distance of two internal mirrors of the F-P cavity is 50~6000 μm.
- 4. the method according to claim 1 for preparing photonic crystal fiber Fabry-Perot temperature sensors, its feature exist In the centre wavelength of the femto-second laser is 800nm, pulse width 120fs.
- 5. the method for preparing photonic crystal fiber Fabry-Perot temperature sensors according to claim 1 or 4, it is special Sign is that the titanium that the femto-second laser uses centre wavelength to be 1kHz for 800nm, pulse width 120fs, repetition rate is blue Jewel femto-second laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711216213.8A CN107941372A (en) | 2017-11-28 | 2017-11-28 | The method that photonic crystal fiber Fabry Perot temperature sensors are prepared based on femtosecond laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711216213.8A CN107941372A (en) | 2017-11-28 | 2017-11-28 | The method that photonic crystal fiber Fabry Perot temperature sensors are prepared based on femtosecond laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107941372A true CN107941372A (en) | 2018-04-20 |
Family
ID=61949344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711216213.8A Pending CN107941372A (en) | 2017-11-28 | 2017-11-28 | The method that photonic crystal fiber Fabry Perot temperature sensors are prepared based on femtosecond laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107941372A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556873A (en) * | 2020-12-03 | 2021-03-26 | 北京信息科技大学 | Preparation method of coreless optical fiber F-P temperature sensor structure |
| DE102022004934A1 (en) | 2021-12-30 | 2023-07-06 | Jörn Volkher Wochnowski | Application-modified glass fiber (hollow) optical waveguides, for example with layer(s) produced and processed by femtosecond lasers |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101028670A (en) * | 2007-04-09 | 2007-09-05 | 中国科学院西安光学精密机械研究所 | Method and apparatus for producing fibre-optical FP sensor by ultrashort pulse laser fine machining |
| CN101055197A (en) * | 2007-05-28 | 2007-10-17 | 重庆大学 | Femtosecond laser pulse produced microsize optical fiber Fabry-perot sensor and its production method |
| CN102221422A (en) * | 2011-04-01 | 2011-10-19 | 上海大学 | Intrinsic optical fiber Fabry-Perot temperature sensor manufactured by femtosecond pulse laser and manufacturing method of temperature sensor |
| CN102508337A (en) * | 2011-11-03 | 2012-06-20 | 上海大学 | Optical fiber fused taper-based intrinsic Fabry-Perot device and manufacturing method thereof |
| CN102539013A (en) * | 2012-01-16 | 2012-07-04 | 上海大学 | Cascaded optical fiber F-P micro-cavity temperature sensor based on scale effect and manufacturing method thereof |
-
2017
- 2017-11-28 CN CN201711216213.8A patent/CN107941372A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101028670A (en) * | 2007-04-09 | 2007-09-05 | 中国科学院西安光学精密机械研究所 | Method and apparatus for producing fibre-optical FP sensor by ultrashort pulse laser fine machining |
| CN101055197A (en) * | 2007-05-28 | 2007-10-17 | 重庆大学 | Femtosecond laser pulse produced microsize optical fiber Fabry-perot sensor and its production method |
| CN102221422A (en) * | 2011-04-01 | 2011-10-19 | 上海大学 | Intrinsic optical fiber Fabry-Perot temperature sensor manufactured by femtosecond pulse laser and manufacturing method of temperature sensor |
| CN102508337A (en) * | 2011-11-03 | 2012-06-20 | 上海大学 | Optical fiber fused taper-based intrinsic Fabry-Perot device and manufacturing method thereof |
| CN102539013A (en) * | 2012-01-16 | 2012-07-04 | 上海大学 | Cascaded optical fiber F-P micro-cavity temperature sensor based on scale effect and manufacturing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘俊杰: "光子晶体光纤与普通单模光纤的熔接", 《中国优秀硕士学位论文全文数据库（信息科技辑）》 * |
| 王文辕等: "飞秒激光制备的全单模光纤法布里-珀罗干涉高温传感器", 《中国激光》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556873A (en) * | 2020-12-03 | 2021-03-26 | 北京信息科技大学 | Preparation method of coreless optical fiber F-P temperature sensor structure |
| DE102022004934A1 (en) | 2021-12-30 | 2023-07-06 | Jörn Volkher Wochnowski | Application-modified glass fiber (hollow) optical waveguides, for example with layer(s) produced and processed by femtosecond lasers |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Nan et al. | Ultrasensitive strain sensor based on Vernier-effect improved parallel structured fiber-optic Fabry-Perot interferometer | |
| Quan et al. | Ultra-high sensitivity Fabry–Perot interferometer gas refractive index fiber sensor based on photonic crystal fiber and Vernier effect | |
| CN102261924B (en) | Fabry-Perot interferometric sensor based on solid photonic crystal fiber and manufacturing method thereof | |
| Elsmann et al. | Inscription of first-order sapphire Bragg gratings using 400 nm femtosecond laser radiation | |
| CN108225657A (en) | A kind of optical fiber FP baroceptors with optical vernier effect and preparation method thereof | |
| CN206618529U (en) | A kind of simple reflective interference-type optical fiber baroceptor | |
| WO2022160822A1 (en) | High-sensitivity high-temperature sensor based on suspended optical fiber dislocation fusion splicing | |
| CN103323943B (en) | Tunable optical filter | |
| CN108020248A (en) | The method that large mode field fibre-optical F-P sensor is prepared based on chemical corrosion method | |
| CN106289339A (en) | Fiber F-P pyrostat based on crystallize and manufacture method | |
| CN103196474A (en) | Manufacturing method of optical fiber Fabry-Perot sensor and detector composed of optical fiber Fabry-Perot sensor | |
| CN108534911A (en) | A kind of temperature sensor and preparation method thereof coupled with microballoon based on D-type optical fiber | |
| CN107861192A (en) | Cone is drawn to combine the method that chemical attack prepares optical fiber F P sensors based on optical fiber | |
| CN102967582A (en) | High-sensitivity micro-nano fiber compound type microcavity biochemical sensor and manufacture method thereof | |
| Liu et al. | Miniaturized fiber-taper-based Fabry–Perot interferometer for high-temperature sensing | |
| CN110987229A (en) | Optical fiber end face type Fabry-Perot cavity temperature sensor | |
| Watson et al. | Laser-machined fibers as Fabry-Perot pressure sensors | |
| CN102539013A (en) | Cascaded optical fiber F-P micro-cavity temperature sensor based on scale effect and manufacturing method thereof | |
| Kong et al. | Cylinder-type fiber-optic Vernier probe based on cascaded Fabry–Perot interferometers with a controlled FSR ratio | |
| CN107941372A (en) | The method that photonic crystal fiber Fabry Perot temperature sensors are prepared based on femtosecond laser | |
| CN105953958A (en) | All-silica fiber Fabry-Perot pressure sensor | |
| CN112326060A (en) | High-sensitivity parallel double-F-P cavity optical fiber temperature sensing device | |
| Chen et al. | Broadband micro-Michelson interferometer with multi-optical-path beating using a sphered-end hollow fiber | |
| CN109580037A (en) | Temperature sensor and preparation method thereof based on photonic crystal fiber FP structure | |
| WO2021031679A1 (en) | Optical parameter sensing and modulating system |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180420 |