CN111239888A - Micro-nano optical fiber with fiber grating resonant cavity and micro-nano optical fiber microfluidic device - Google Patents
Micro-nano optical fiber with fiber grating resonant cavity and micro-nano optical fiber microfluidic device Download PDFInfo
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Abstract
The application relates to a micro-nano optical fiber with a fiber grating resonant cavity, which comprises: input channel, resonant cavity, output channel. The inner diameter of the resonant cavity is gradually reduced from two ends to the middle part, a first fiber grating is arranged in the input channel, and a second fiber grating at a position corresponding to the first fiber grating is arranged in the output channel. Through setting up first fiber grating and second fiber grating, form the resonant cavity in receiving the optic fibre a little, light is incited from the input channel, get into the resonant cavity through the first fiber grating in the input channel, carry out the resonance many times in the resonant cavity between first fiber grating and the second fiber grating, increase the wavelength intensity of the light that accords with the optical path, weaken the intensity of the light that does not satisfy the optical path, export from the output channel at last, the light passes through fiber grating resonance frequency-selecting, thereby increase the utilization efficiency of light, increase sensitivity.
Description
Technical Field
The application relates to the technical field of optical fiber communication equipment, in particular to a micro-nano optical fiber with a fiber grating resonant cavity and a micro-nano optical fiber micro-fluidic device.
Background
Along with the development of the optical fiber communication towards ultra high speed, ultra large capacity and ultra long distance, and the development of the device design theory and the preparation process technology, the requirements of people on the working performance and the integration level of the device are continuously improved, and the miniaturization of the device becomes one of the important trends of scientific and technical research and application. The micro-nano optical waveguide is an important base stone for researching micro-nano photonics phenomena and constructing micro-nano photonic devices, and is one of the research hotspots in the field of the current nano photonics. Compared with other types of micro-nano optical waveguides, the micro-nano optical fiber has the advantages of extremely low coupling loss, extremely low roughness of the waveguide surface, high-refractive-index-difference strong-limited optical field, large-percentage evanescent field, extremely light weight, flexible dispersion characteristic and the like. The standard for judging the practicability of the micro-nano optical fiber is the sensitivity of the micro-nano optical fiber, in the prior art, an optical fiber tapering method is generally adopted to manufacture an optical fiber tapering, the stretching part of the optical fiber tapering is used as the micro-nano optical fiber, and the manufactured micro-nano optical fiber is directly put into use, but the sensitivity of the micro-nano optical fiber manufactured only by the thermal stretching method is not high enough.
Disclosure of Invention
In order to overcome the problems in the related technology at least to a certain extent, the application provides a micro-nano optical fiber with a fiber grating resonant cavity and a micro-nano optical fiber micro-fluidic device.
The scheme of the application is as follows:
according to a first aspect of embodiments of the present application, there is provided a micro-nano optical fiber with a fiber grating resonant cavity, including: an input channel, a resonant cavity and an output channel;
the inner diameter of the resonant cavity is gradually reduced from two ends to the middle part;
the input channel is provided with a first fiber grating, and the output channel is provided with a second fiber grating at a position corresponding to the first fiber grating.
Preferably, in an implementable manner herein, the resonant cavity has an internal diameter of 10um to 50um and a length of 0.5mm to 100 mm.
Preferably, in an implementable manner of the present application, the first fiber grating abuts an inner wall of the input channel;
the second fiber bragg grating is attached to the inner wall of the output channel.
Preferably, in an implementable manner of the present application, the reflection center wavelengths of the first and second fiber gratings are the same.
Preferably, in an implementable manner of the present application, the reflection center wavelength of the first fiber grating and the reflection center wavelength of the second fiber grating have a wavelength difference, and the wavelength difference is in the interval of-2 nm-2 nm.
Preferably, in an implementable manner of the present application, the first fiber grating and the second fiber grating have a reflectivity of 30% to 90%.
According to a second aspect of the embodiments of the present application, there is provided a micro-nanofiber microfluidic device, including: a microfluidic chip and the micro-nano optical fiber according to any one of the above items;
the microfluidic chip includes: the system comprises an optical fiber channel, a sample introduction channel, a sample outlet channel, a micro-flow channel and a micro-flow drive;
the optical fiber channel, the sample introduction channel, the sample outlet channel and the microfluidic drive are all arranged in the microfluidic channel;
the optical fiber channel corresponds to the resonant cavity in shape;
microfluid with a preset proportion is arranged in the microfluidic channel;
the resonant cavity is embedded into the optical fiber channel and is provided with a sample inlet and a sample outlet, the sample inlet of the resonant cavity is connected into the sample inlet channel, and the sample outlet of the resonant cavity is connected into the sample outlet channel;
the micro-fluidic drive is used for driving the micro-fluid to sequentially pass through the sample introduction channel, the sample introduction port, the resonant cavity, the sample outlet and the sample outlet channel.
Preferably, in an implementation manner of the present application, the predetermined ratio of the pure water and the ethanol in the micro-fluid is 8:2, or 6:4, or 5:5, or 3:7, or 2: 8.
Preferably, in an implementable manner of the present application, a joint of the resonant cavity and the optical fiber channel is filled with a sealant.
Preferably, in an implementation manner of the present application, the sample inlet channel of the microfluidic chip is disposed at a side edge close to the micro-nano fiber input channel, and the sample outlet channel of the microfluidic chip is disposed at a side edge close to the micro-nano fiber output channel;
the sample inlet is arranged at a first intersection point of the resonant cavity and the sample inlet channel;
the sample outlet is arranged at a second junction point of the resonant cavity and the sample outlet channel;
the first and second junctions are located on opposite sides of the resonator cavity outer surface.
The technical scheme provided by the application can comprise the following beneficial effects:
the micro-nano optical fiber with the fiber grating resonant cavity comprises: input channel, resonant cavity, output channel. The inner diameter of the resonant cavity is gradually reduced from two ends to the middle part, a first fiber grating is arranged in the input channel, and a second fiber grating at a position corresponding to the first fiber grating is arranged in the output channel. Through setting up first fiber grating and second fiber grating, form the resonant cavity in receiving the optic fibre a little, light is incited from the input channel, get into the resonant cavity through the first fiber grating in the input channel, carry out the resonance many times in the resonant cavity between first fiber grating and the second fiber grating, increase the wavelength intensity of the light that accords with the optical path, weaken the intensity of the light that does not satisfy the optical path, export from the output channel at last, the light passes through fiber grating resonance frequency-selecting, thereby increase the utilization efficiency of light, increase sensitivity.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic structural diagram of a micro-nano optical fiber with a fiber grating resonant cavity according to an embodiment of the present application;
fig. 2 is a spectrum diagram of light output via a micro-nano fiber according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a micro-nanofiber microfluidic device according to an embodiment of the present disclosure;
fig. 4 is a spectrogram of light output through a micro-nano fiber under the condition of fluids with different ratios provided in an embodiment of the present application.
Reference numerals: input channel-1; a first fiber grating-2; a resonant cavity-3; an output channel-4; a second fiber grating-5; a fiber channel-6; a sample introduction channel-7; a sample outlet channel-8; a microfluidic channel-9.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
Fig. 1 is a schematic structural diagram of a micro-nano optical fiber with a fiber grating resonant cavity according to an embodiment of the present application, and referring to fig. 1, the micro-nano optical fiber with a fiber grating resonant cavity includes: an input channel 1, a resonant cavity 3 and an output channel 4;
the inner diameter of the resonant cavity 3 is gradually reduced from two ends to the middle part;
the input channel 1 is provided with a first fiber grating 2, and the output channel 4 is provided with a second fiber grating 5 corresponding to the first fiber grating 2.
The micro-nano optical fiber in the embodiment is manufactured by a thermal stretching method, the micro-nano optical fiber is stretched into a structure with thick two ends and thin middle, the two ends of the micro-nano optical fiber are respectively used as an input channel 1 and an output channel 4, the input channel 1 is used as a port for light to enter, and the output channel 4 is used as a port for outputting light.
A first fiber grating 2 is arranged in the input channel 1 and a second fiber grating 5 is arranged in the output channel 4.
The arrangement positions of the first fiber grating 2 and the second fiber grating 5 need to correspond.
Referring to fig. 1, the inner diameter of the resonant cavity gradually decreases from the two ends to the middle portion, and stops decreasing after decreasing to a certain value, thereby ensuring that light can complete resonance in the resonant cavity.
The fiber grating is a diffraction grating formed by axially and periodically modulating the refractive index of a fiber core of an optical fiber through a certain method, and is a passive filter device. When one beam of light passes through the fiber grating, the wavelength meeting the fiber grating Bragg condition is reflected, and the rest wavelengths are transmitted continuously through the fiber grating.
In the embodiment, by arranging the first fiber grating 2 and the second fiber grating 5, the resonant cavity 3 is formed in the middle of the micro-nano fiber, light is incident from the input channel 1, enters the resonant cavity 3 through the first fiber grating 2 in the input channel 1, and resonates for multiple times in the resonant cavity 3 between the first fiber grating 2 and the second fiber grating 5, so that the wavelength intensity of the light conforming to the optical path is increased, the intensity of the light which does not satisfy the optical path is weakened, and finally, the light is output from the output channel 4, and the frequency is selected through fiber grating resonance, so that the utilization efficiency of the light is increased, and the sensitivity is increased.
Preferably, the inner diameter of the resonant cavity is 10um-50um, and the length is 0.5mm-100 mm.
Specifically, the internal diameter of the two ports of the resonant cavity is 50um, and the internal diameter of the middle part of the resonant cavity is 10 um.
In the prior art, the inner diameter of the micro-nano optical fiber is generally 200um, and in the application, the inner diameter of the resonant cavity is stretched to 10um-50um, so that the resonance of light in the resonant cavity is facilitated.
The length of the micro-nano optical fiber is related to the period of resonance. The longer the micro-nano fiber, the more the number of peaks in the spectrum generated by light passing through the micro-nano fiber, and the higher the resolution. In contrast, the longer the micro-nano fiber, the more the energy attenuation of light will increase.
In the micro-nano optical fiber with the fiber grating resonant cavity in some embodiments, the first fiber grating 2 is attached to the inner wall of the input channel 1;
the second fiber grating 5 is attached to the inner wall of the output channel 4.
The fiber grating is attached to the inner wall of the channel, so that light cannot be leaked out in the resonance process.
In the micro-nano optical fiber with the fiber grating resonant cavity in some embodiments, the reflection center wavelengths of the first fiber grating 2 and the second fiber grating 5 are the same.
If the reflection center wavelengths of the first fiber bragg grating 2 and the second fiber bragg grating 5 are the same, the wave crests are higher and the number of the wave crests is smaller in the spectrum formed according to the light output by the micro-nano fiber.
In the micro-nano optical fiber with the fiber grating resonant cavity in some embodiments, the reflection central wavelength of the first fiber grating 2 and the reflection central wavelength of the second fiber grating 5 have a wavelength difference, and the interval range of the wavelength difference is-2 nm-2 nm.
If the reflection center wavelengths of the first fiber bragg grating 2 and the second fiber bragg grating 5 have a certain difference, the wave crests are lower and the number of the wave crests is larger in the spectrum formed according to the light output by the micro-nano fiber.
If the reflection center wavelength of the first fiber grating 2 is λ, the reflection center wavelength of the second fiber grating 5 is λ + Δ λ, and Δ λ ranges from-2 nm to 2 nm.
In the micro-nano optical fiber with the fiber grating resonant cavity in some embodiments, the reflectivity of the first fiber grating 2 and the second fiber grating 5 is 30% -90%.
In the micro-nano optical fiber with the fiber grating resonant cavity in some embodiments, the reflectivity of the first fiber grating 2 and the second fiber grating 5 is 70%, the reflection center wavelength of the first fiber grating 2 is 1549.50nm, the reflection center wavelength of the second fiber grating 5 is 1550.00nm, the length of the resonant cavity 3 is 20mm, light forms resonance within a certain range of the reflection center wavelength of the fiber grating, the spectrum of output light refers to fig. 2, and the resolution and sensitivity of the light are obviously increased.
Fig. 3 is a schematic structural diagram of a micro-nanofiber microfluidic device according to an embodiment of the present application, and referring to fig. 3, the micro-nanofiber microfluidic device includes: a microfluidic chip and a micro-nano optical fiber as in any of the above embodiments;
the micro-fluidic chip includes: the system comprises an optical fiber channel 6, a sample injection channel 7, a sample outlet channel 8, a micro-flow channel 9 and a micro-flow drive;
the optical fiber channel 6, the sample injection channel 7, the sample outlet channel 8 and the micro-flow drive are all arranged in the micro-flow channel 9;
the optical fiber channel 6 corresponds to the resonant cavity 3 in shape;
microfluid with preset proportion is arranged in the microfluidic channel 9;
the resonant cavity 3 is embedded into the optical fiber channel 6, the resonant cavity 3 is provided with a sample inlet and a sample outlet, the sample inlet of the resonant cavity 3 is connected into the sample inlet channel 7, and the sample outlet of the resonant cavity 3 is connected into the sample outlet channel 8;
the micro-flow drive is used for driving micro-fluid to sequentially pass through the sample inlet channel 7, the sample inlet, the resonant cavity 3, the sample outlet and the sample outlet channel 8.
The micro-fluidic chip is a mature prior art, in this embodiment, the micro-fluidic chip is combined with the micro-nano fiber in the above embodiment, a resonant cavity 3 is formed in the middle of the micro-nano fiber by arranging a first fiber grating 2 and a second fiber grating 5, light enters the resonant cavity 3 from the incident light through the first fiber grating 2 in the input channel 1, and multiple resonance is performed in the resonant cavity 3 between the first fiber grating 2 and the second fiber grating 5. Meanwhile, microflow in the microfluidic chip can also enter the resonant cavity 3 through the sample injection channel 7, because the micro-nano fiber has an evanescent field, the evanescent field of the micro-nano fiber can act with the microfluid (the action of light and substances), and meanwhile, the light utilization efficiency can be greatly improved and the sensitivity can be increased through fiber grating resonance frequency selection (wavelength selection).
In some embodiments of the micro-nano fiber microfluidic device, the preset ratio of the micro-fluid is 8:2 of pure water and ethanol, or 6:4 of pure water and ethanol, or 5:5 of pure water and ethanol, or 3:7 of pure water and ethanol, or 2:8 of pure water and ethanol.
Referring to fig. 4, fig. 4 shows a spectrum generated by passing through fluids with different preset ratios, which sequentially comprises 8:2 of pure water and ethanol, 6:4 of pure water and ethanol, 5:5 of pure water and ethanol, 3:7 of pure water and ethanol, 2:8 of pure water and ethanol from left to right, no fluid exists, the spectrum change is obvious, the intensity of the resonance spectrum slightly changes, the period of the resonance spectrum also changes, and the number of the periods gradually increases and decreases; an increase in the number of cycles means an increase in resolution. In particular, the resolution is significantly increased compared to the spectrum of light output in the absence of fluid.
In the micro-nano fiber microfluidic device in some embodiments, a sealant is filled at the joint of the resonant cavity 3 and the fiber channel 6.
And sealant is filled at the joint of the resonant cavity 3 and the optical fiber channel 6, so that the leakage and the residue of microfluid are avoided.
In the micro-nano optical fiber micro-fluidic device in some embodiments, a sample inlet channel 7 of a micro-fluidic chip is arranged at a side edge close to a micro-nano optical fiber input channel 1, and a sample outlet channel 8 of the micro-fluidic chip is arranged at a side edge close to a micro-nano optical fiber output channel 4;
the sample inlet is arranged at a first intersection point of the resonant cavity 3 and the sample inlet channel 7;
the sample outlet is arranged at a second intersection point of the resonant cavity 3 and the sample outlet channel 8;
the first and second junctions are located on opposite sides of the outer surface of the cavity 3.
Referring to fig. 3, a sample inlet channel 7 of the microfluidic chip is arranged at a side edge close to the micro-nano optical fiber input channel 1, and a sample outlet channel 8 of the microfluidic chip is arranged at a side edge close to the micro-nano optical fiber output channel 4, so that microfluid can completely flow through the whole micro-nano optical fiber.
Because the resonant cavity 3 and the sample introduction channel 7 generate two junction points, the two junction points are respectively positioned on the opposite side surfaces of the outer surface of the resonant cavity 3. The cavity 3 and the sample outlet 8 also create two junctions, which are located on opposite sides of the outer surface of the cavity 3.
Arranging a sample inlet of a resonant cavity 3 at a first intersection point of the resonant cavity 3 and a sample inlet channel 7, and arranging a sample outlet at a second intersection point of the resonant cavity 3 and a sample outlet channel 8;
therefore, the first junction and the second junction are positioned on the opposite side surfaces of the outer surface of the resonant cavity 3, so that microfluid can completely flow through the whole micro-nano optical fiber.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A micro-nano optical fiber with a fiber grating resonant cavity is characterized by comprising: an input channel, a resonant cavity and an output channel;
the inner diameter of the resonant cavity is gradually reduced from two ends to the middle part;
the input channel is provided with a first fiber grating, and the output channel is provided with a second fiber grating at a position corresponding to the first fiber grating.
2. The micro-nano optical fiber with the fiber grating resonant cavity according to claim 1, wherein the resonant cavity has an inner diameter of 10um to 50um and a length of 0.5mm to 100 mm.
3. The micro-nano optical fiber with the fiber grating resonant cavity according to claim 1, wherein the first fiber grating is attached to the inner wall of the input channel;
the second fiber bragg grating is attached to the inner wall of the output channel.
4. The micro-nano optical fiber with the fiber grating resonant cavity according to claim 1, wherein the reflection center wavelengths of the first fiber grating and the second fiber grating are the same.
5. The micro-nano optical fiber with the fiber grating resonant cavity according to claim 1, wherein the reflection center wavelength of the first fiber grating and the reflection center wavelength of the second fiber grating have a wavelength difference, and the interval range of the wavelength difference is-2 nm-2 nm.
6. The micro-nano optical fiber with the fiber grating resonant cavity according to claim 1, wherein the reflectivity of the first fiber grating and the second fiber grating is 30% -90%.
7. A micro-nano fiber microfluidic device is characterized by comprising: a micro-fluidic chip and the micro-nano optical fiber according to any one of claims 1 to 6;
the microfluidic chip includes: the system comprises an optical fiber channel, a sample introduction channel, a sample outlet channel, a micro-flow channel and a micro-flow drive;
the optical fiber channel, the sample introduction channel, the sample outlet channel and the microfluidic drive are all arranged in the microfluidic channel;
the optical fiber channel corresponds to the resonant cavity in shape;
microfluid with a preset proportion is arranged in the microfluidic channel;
the resonant cavity is embedded into the optical fiber channel and is provided with a sample inlet and a sample outlet, the sample inlet of the resonant cavity is connected into the sample inlet channel, and the sample outlet of the resonant cavity is connected into the sample outlet channel;
the micro-fluidic drive is used for driving the micro-fluid to sequentially pass through the sample introduction channel, the sample introduction port, the resonant cavity, the sample outlet and the sample outlet channel.
8. The micro-nano fiber micro-fluidic device according to claim 7, wherein the preset ratio of the micro-fluid is 8:2 of pure water and ethanol, or 6:4 of pure water and ethanol, or 5:5 of pure water and ethanol, or 3:7 of pure water and ethanol, or 2:8 of pure water and ethanol.
9. The micro-nano fiber microfluidic device according to claim 7, wherein a joint of the resonant cavity and the fiber channel is filled with a sealant.
10. The micro-nano fiber microfluidic device according to claim 7, wherein a sample inlet channel of the microfluidic chip is arranged at a side edge close to the micro-nano fiber input channel, and a sample outlet channel of the microfluidic chip is arranged at a side edge close to the micro-nano fiber output channel;
the sample inlet is arranged at a first intersection point of the resonant cavity and the sample inlet channel;
the sample outlet is arranged at a second junction point of the resonant cavity and the sample outlet channel;
the first and second junctions are located on opposite sides of the resonator cavity outer surface.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565926A (en) * | 2012-02-28 | 2012-07-11 | 华中科技大学 | Fabry-Perot interferometer and manufacturing method thereof |
| CN207051524U (en) * | 2017-05-12 | 2018-02-27 | 深圳大学 | Phase-shifted grating based on tapered fiber |
| CN108828263A (en) * | 2018-08-03 | 2018-11-16 | 中国计量大学 | A kind of fibre optical sensor measuring micro-fluidic speed and direction based on TFBG |
| CN108956525A (en) * | 2018-06-25 | 2018-12-07 | 山东大学苏州研究院 | A kind of optical fibre bio molecule sensor based on oblique raster |
| CN208921147U (en) * | 2018-05-18 | 2019-05-31 | 中国计量大学 | A kind of optical fiber spray nozzle type microfluid multiparameter measuring device |
-
2020
- 2020-03-05 CN CN202010148285.9A patent/CN111239888A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565926A (en) * | 2012-02-28 | 2012-07-11 | 华中科技大学 | Fabry-Perot interferometer and manufacturing method thereof |
| CN207051524U (en) * | 2017-05-12 | 2018-02-27 | 深圳大学 | Phase-shifted grating based on tapered fiber |
| CN208921147U (en) * | 2018-05-18 | 2019-05-31 | 中国计量大学 | A kind of optical fiber spray nozzle type microfluid multiparameter measuring device |
| CN108956525A (en) * | 2018-06-25 | 2018-12-07 | 山东大学苏州研究院 | A kind of optical fibre bio molecule sensor based on oblique raster |
| CN108828263A (en) * | 2018-08-03 | 2018-11-16 | 中国计量大学 | A kind of fibre optical sensor measuring micro-fluidic speed and direction based on TFBG |
Non-Patent Citations (1)
| Title |
|---|
| JIAJUN TIAN等: "Microfluidic refractive index sensor based on an all-silica in-line Fabry–Perot interferometer fabricated with microstructured fibers", 《OPTICS EXPRESS》 * |
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