CN208818333U - The fibre optic interferometer lateral stress vibrating sensor modulated simultaneously based on phase and intensity - Google Patents
The fibre optic interferometer lateral stress vibrating sensor modulated simultaneously based on phase and intensity Download PDFInfo
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- CN208818333U CN208818333U CN201821567020.7U CN201821567020U CN208818333U CN 208818333 U CN208818333 U CN 208818333U CN 201821567020 U CN201821567020 U CN 201821567020U CN 208818333 U CN208818333 U CN 208818333U
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- optical fiber
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- lateral stress
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Abstract
The utility model discloses the fibre optic interferometer lateral stress vibrating sensors modulated simultaneously based on phase and intensity, including incident optical, sensor fibre, the output optical fiber, first interface, second interface and netted optical fiber encapsulating structure, first interface and second interface are respectively arranged at the end of sensor fibre, and incident optical and the output optical fiber one end are respectively embedded into and are set in first interface and second interface；Netted optical fiber encapsulating structure is made of lattice support plate and sealing, and sealing is set to any first interface and second interface surface, sensor fibre is set to lattice support plate surface in cross-shaped, and it is bonded by polymerization viscose and lattice support plate, with it is small in size, convenient for operation and adjustment, the quickly sensitivity of sensing optical fiber simultaneously, it is often more important that can be vibrated to small lateral stress the advantages that detecting, quickly detecting to the vital sign of human body.
Description
Technical field
It is especially the fiber optic interferometric based on phase and intensity while modulation the utility model relates to sensor technical field
Instrument lateral stress vibrating sensor.
Background technique
Lateral vibration just refers to the direction of vibration vibration vertical with the direction of propagation.Gas can only bear compression and tensile stress,
Shearing stress cannot be born, thus it can only propagate longitudinal wave, and solid can bear compression and tensile stress and bear to cut to answer
Power, so can not only propagate longitudinal wave but also can propagate shear wave, the monitoring of vital sign and nursing body temperature, pulse, breathing, blood pressure are human bodies
Four big vital signs.
However, the analysis found that, breathing is so that cardiopulmonary activity, and the every contraction of heart, diastole are primary, on peripheral arterial just
There is primary beating, as pulse, when heart contraction, Intraarterial pressure increases, Intraarterial pressure when tube wall expansion, diastole
Decline, the vital movements such as tube wall retraction can be vibrated by lateral stress to be embodied, and traditional medical inspection device can not
Accomplish subtle detection and adjustment, and because volume it is excessive caused by it is inconvenient.
Utility model content
Therefore, in order to solve above-mentioned deficiency, the utility model provides the optical fiber based on phase and intensity while modulation herein
Interferometer lateral stress vibrating sensor, have it is small in size, convenient for operation and adjustment, while quickly sensing optical fiber sensitivity,
Small lateral stress can more importantly be vibrated and be detected, quickly the vital sign of human body detect etc. excellent
Point.
The utility model is realized in this way the fibre optic interferometer lateral stress that construction is modulated simultaneously based on phase and intensity
Vibrating sensor, including incident optical, sensor fibre, the output optical fiber, first interface, second interface and netted optical fiber encapsulation knot
Structure, first interface and second interface are respectively arranged at the end of sensor fibre, and incident optical and the output optical fiber one end difference are embedding
Enter to be set in first interface and second interface；Netted optical fiber encapsulating structure is made of lattice support plate and sealing, and sealing is set
It is placed in any first interface and second interface surface, sensor fibre is set to lattice support plate surface in cross-shaped, and
It is bonded by polymerization viscose and lattice support plate.
Further, incident optical and the output optical fiber are communication single mode optical fiber.Sensor fibre can be single mode optical fiber, more
Other optical fiber such as mode fiber, packet polarisation fibre, photonic crystal fiber are mainly used for carrying out the stress that sensing is laterally applied to, emergent light
Fibre is used for transmission out the light exported by interface, and first interface is used for excitation fiber covering optical mode, and second interface is for receiving fibre
Core model and fibre cladding optical mode simultaneously allow them to generate intermode interference, the first interface between incident optical and sensor fibre herein
Biggish mode field diameter gap is needed, to effectively excite the Coherence Mode of high-order, the output optical fiber is helped quickly to receive light source.
Further, sensor fibre here is divided into two layers, and first layer optical fiber is attached on lattice support plate, while second
Layer optical fiber intersection is attached on lattice support plate, crosspoint is formed with first layer light, to increase the sensing sensitivity of optical fiber.
Further, lattice support plate is made of polymer material, and lattice support plate is used to fix the optical fiber of multilayer, grid
Structure can apply simultaneously intersects lateral stress on optical fiber, and lattice support plate is equally used for the light of protection first layer and the second layer
Fibre, while applying and intersecting lateral stress on optical fiber, further increasing the sensing sensitivity of optical fiber, to be quickly detected small
Lateral stress.
The utility model provides the fibre optic interferometer lateral stress based on phase and intensity while modulation by improving herein
Vibrating sensor, it is small in size, convenient for operation and adjustment；The sensitivity of quick sensing optical fiber；It can shake to small lateral stress
It is dynamic to be detected, quickly the vital sign of human body can be detected.Specific advantage embodies are as follows:
Advantage 1: incident optical and the output optical fiber are communication single mode optical fiber.Sensor fibre can be single mode optical fiber, multimode
Other optical fiber, the sensor fibres such as optical fiber, packet polarisation fibre, photonic crystal fiber are sensing optical fiber, are mainly used for carrying out sensing laterally
The stress of application, the output optical fiber are used for transmission out the light exported by interface, and first interface is used for excitation fiber covering optical mode, the
Two interfaces are for receiving core mode and fibre cladding optical mode and them being allowed to generate intermode interference, incident optical and sense light herein
First interface between fibre needs biggish mode field diameter gap, to effectively excite the Coherence Mode of high-order, helps to be emitted
Optical fiber quickly receives light source.
Advantage 2: sensor fibre is sensing optical fiber, and sensor fibre here is divided into two layers, and first layer optical fiber is attached at grid
In support plate, while second layer optical fiber intersection is attached on lattice support plate, crosspoint is formed with first layer light, to increase
The sensing sensitivity of optical fiber.
Advantage 3: lattice support plate is made of polymer material, and lattice support plate is used to fix the optical fiber of multilayer, grid knot
Structure can apply simultaneously intersects lateral stress on optical fiber, and lattice support plate is equally used for the light of protection first layer and the second layer
Fibre, while applying and intersecting lateral stress on optical fiber, further increasing the sensing sensitivity of optical fiber, to be quickly detected small
Lateral stress.
Detailed description of the invention
Fig. 1 is the utility model structure diagram；
Fig. 2 is one of the utility model catenation principle figure；
Fig. 3 is the two of the utility model catenation principle figure；
Fig. 4 is the utility model optical fiber lattice stacked position figure；
Fig. 5 is that the utility model optical fiber intersects and grid support plate structural schematic diagram.
Serial number as shown in the figure: incident optical 1, sensor fibre 2, the output optical fiber 3, first interface 4, second interface 5, network diaphragm
Fine encapsulating structure 6, lattice support plate 601 and sealing 602.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing 1- Fig. 5, to the skill in the utility model embodiment
Art scheme is clearly and completely described, it is clear that and the described embodiments are only a part of the embodiments of the utility model, and
The embodiment being not all of.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness
Every other embodiment obtained, fall within the protection scope of the utility model under the premise of labour；In addition, term " first ",
" second ", " third " " upper and lower, left and right " etc. are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Meanwhile in the description of the present invention, unless otherwise clearly defined and limited, term " connected ", " connection " should do broad sense
Understand, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connection, it can also
To be to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For the ordinary skill people of this field
For member, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
The utility model provides the fibre optic interferometer lateral stress based on phase and intensity while modulation by improving herein
Vibrating sensor can be practiced as follows as Figure 1-Figure 5；Including incident optical 1, sensor fibre 2, go out
Optical fiber 3, first interface 4, second interface 5 and netted optical fiber encapsulating structure 6 are penetrated, first interface 4 and second interface 5 are respectively arranged at
The end of sensor fibre 2, and incident optical 1 and 3 one end of the output optical fiber are respectively embedded into and are set to first interface 4 and second interface 5
In；Netted optical fiber encapsulating structure 6 is made of lattice support plate 601 and sealing 602, and sealing 602 is set to any first and connects
Mouth 4 and 5 surface of second interface, sensor fibre 2 are set to 601 surface of lattice support plate in cross-shaped, and glutinous by polymerization
Glue and lattice support plate 601 bond.
In the utility model, incident optical 1 and the output optical fiber 3 are communication single mode optical fiber.Sensor fibre 2 can be single mode
Other optical fiber such as optical fiber, multimode fibre, packet polarisation fibre, photonic crystal fiber are mainly used for carrying out the stress that sensing is laterally applied to,
The output optical fiber 3 is used for transmission out the light exported by interface 3, and first interface 4 is used for excitation fiber covering optical mode, second interface 5
For receiving core mode and fibre cladding optical mode and them being allowed to generate intermode interference herein, incident optical 1 and sensor fibre 2 it
Between first interface 4 need biggish mode field diameter gap, thus effectively excite high-order Coherence Mode, help the output optical fiber
3 quickly receive light source；Sensor fibre 2 is sensing optical fiber, and it is two layers that sensor fibre 2 here, which divides, and first layer optical fiber is attached at net
In lattice support plate 601, while second layer optical fiber intersection is attached on lattice support plate 601, forms crosspoint with first layer light,
To increase the sensing sensitivity of optical fiber；Lattice support plate 601 is made of metal material, and lattice support plate 601 is more for fixation
The optical fiber of layer, network can apply intersection lateral stress on optical fiber simultaneously, and lattice support plate 601 is equally used for protection the
The optical fiber of one layer and the second layer, while applying and intersecting lateral stress in the sensing sensitivity on optical fiber, further increasing optical fiber, from
And it is quickly detected small lateral stress.
Embodiment one:
The basic schematic diagram of meaning fiber mode interferometer as shown in Figure 2, incident optical 1 and the output optical fiber 3 are communication unit
Mode fiber, incident optical 1 are used to enter to inject first interface 4 for C-band laser light source, and sensor fibre 2 can be single mode optical fiber, more
Other optical fiber such as mode fiber, packet polarisation fibre, photonic crystal fiber are mainly used for carrying out the stress that sensing is laterally applied to, emergent light
Fibre 3 is used for transmission out the light exported by interface 3, and first interface 4 is used for excitation fiber covering optical mode, and second interface 5 is for connecing
By core mode and fibre cladding optical mode and them is allowed to generate intermode interference herein, between incident optical 1 and sensor fibre 2
One interface 4 needs biggish mode field diameter gap, to effectively excite the Coherence Mode of high-order, equally such as to second interface 5
This.What needs to be explained here is that light source used can be C-band and L-band laser light source, first interface 4 and second interface 5
Polymeric colloid is needed to encapsulate, duroplasts or Metal Packaging can be used in colloid shell, and encapsulation schematic diagram is as shown in Fig. 2, for protecting
Interface is protected, anti-not-go-end is opened, while avoiding external disturbance to the signal interference of the interferometer.
Embodiment two:
What is different from the first embodiment is that Fig. 3 is the stacked encapsulating structure figure of optical fiber, first layer optical fiber is attached at lattice support
Plate, as shown in figure 4, usable polymers are attached at support in the class, second layer optical fiber intersects at first layer and forms 1-48 optical fiber intersection
Point is attached on lattice support plate simultaneously, crosspoint schematic diagram as shown in figure 5, the effect in optical fiber crosspoint for allowing upper and lower optical fiber
It is micro-bend to generate deformation, corresponding variation, multiple crosspoints occur for the micro-bend effective refractive index that will lead to optical fiber of the deformation and length
The micro-bend superposition of deformation will lead to the interferometer and generate stronger phase-modulation, in addition micro-bend effect will lead to optical transmission process
In intensity loss, the power that especially will lead to cladding mode generates biggish loss, the micro-bend superposition of the deformation in multiple crosspoints
Meeting generates biggish modulation to the intensity of the interferometer.It should be noted that increasing for crosspoint can improve such sensor
Sensitivity, the superposition of multilayer fibers can improve the sensitivity of such sensor, show only two layers of grid superposition here, this is specially
Benefit is equally applicable to the superposition of multilayer fibers, the network in more optical fiber crosspoints；Lattice support plate shown in fig. 5 is used for
The optical fiber of fixed multilayer, network can apply simultaneously intersects lateral stress on optical fiber, and grid cover plate is for protection the
The optical fiber of one layer and the second layer, while applying and intersecting lateral stress on optical fiber, for increasing the sensing sensitivity of optical fiber.
To sum up；The fibre optic interferometer lateral stress vibrating sensor that the utility model is modulated simultaneously based on phase and intensity,
It is small in size, convenient for operation and adjustment, while quickly sensing optical fiber sensitivity, it is often more important that can be to small lateral stress
Vibration is detected, and can quickly be detected to the vital sign of human body.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (4)
1. the fibre optic interferometer lateral stress vibrating sensor modulated simultaneously based on phase and intensity, it is characterised in that: including entering
Penetrate optical fiber (1), sensor fibre (2), the output optical fiber (3), first interface (4), second interface (5) and netted optical fiber encapsulating structure
(6)；The first interface (4) and second interface (5) are respectively arranged at the end of sensor fibre (2), and the incident optical (1)
It is respectively embedded into and is set in first interface (4) and second interface (5) with the output optical fiber (3) one end；The netted optical fiber encapsulation knot
Structure (6) is made of lattice support plate (601) and sealing (602), and the sealing (602) is set to any first interface (4)
With second interface (5) surface, the sensor fibre (2) is set to lattice support plate (601) surface in cross-shaped, and passes through
It polymerize viscose and lattice support plate (601) bonds.
2. the fibre optic interferometer lateral stress vibrating sensor modulated simultaneously based on phase and intensity according to claim 1,
It is characterized by: the incident optical (1) and the output optical fiber (3) are communication single mode optical fiber.
3. the fibre optic interferometer lateral stress vibrating sensor modulated simultaneously based on phase and intensity according to claim 1,
It is characterized by: the sensor fibre (2) is sensing optical fiber.
4. the fibre optic interferometer lateral stress vibrating sensor modulated simultaneously based on phase and intensity according to claim 1,
It is characterized by: the lattice support plate (601) is made of polymer material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821567020.7U CN208818333U (en) | 2018-09-26 | 2018-09-26 | The fibre optic interferometer lateral stress vibrating sensor modulated simultaneously based on phase and intensity |
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| CN201821567020.7U CN208818333U (en) | 2018-09-26 | 2018-09-26 | The fibre optic interferometer lateral stress vibrating sensor modulated simultaneously based on phase and intensity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023168859A1 (en) * | 2022-03-08 | 2023-09-14 | 福州海创医疗器械有限公司 | Vital sign signal photoelectric conversion device and method |
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2018
- 2018-09-26 CN CN201821567020.7U patent/CN208818333U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023168859A1 (en) * | 2022-03-08 | 2023-09-14 | 福州海创医疗器械有限公司 | Vital sign signal photoelectric conversion device and method |
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