CN208459658U - A kind of reflective double optical fiber sensing probes - Google Patents
A kind of reflective double optical fiber sensing probes Download PDFInfo
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- CN208459658U CN208459658U CN201821313964.1U CN201821313964U CN208459658U CN 208459658 U CN208459658 U CN 208459658U CN 201821313964 U CN201821313964 U CN 201821313964U CN 208459658 U CN208459658 U CN 208459658U
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Abstract
The utility model is a kind of reflective double optical fiber sensing probes, and 2 quartz glass optical fiber cladding outer diameters are identical, and is equal to capillary glass tube internal diameter, is through in capillary glass tube in parallel, outer casing stainless steel protection pipe, high-temp glue is adhesively fixed.Preferred version is that cladding outer diameter is 125 μm, two core diameters be the core diameter of 105 μm or one be 105 μm it is another be 62.5 μm.It is 125 μm of fibre cores that optical fiber one end, which strips coat up to cladding outer diameter, when this preparation, adds stainless steel protection pipe after capillary glass tube, then gluing are inserted into after gluing.To high temperature adhesive curing, end surface grinding polishing.The probe of the utility model can remote transmission information, up to more than thousands of rice, the quartz glass optical fiber of standard cladding outer diameter and core diameter is through in the capillary glass tube of cooperation transmission range, guarantees that 2 optical fiber are parallel.Coat need to only be stripped up to standard cladding outer diameter, technique simplifies, and ensure that probe quality, and homogeneity of product is high, and it is at low cost, it is suitable for mass production.
Description
Technical field
The utility model relates to technical field of optical fiber sensing, specially a kind of reflective double optical fiber sensing probes.
Background technique
With the further investigation and extensive use of rapid development and the fiber optic communication of optic fibre manufacturing technology, optical fiber sensing technology
Also it is developed rapidly.Optical intensity modulation type fibre optical sensor has high sensitivity, electromagnetism interference, corrosion-resistant, anti-
A series of advantage of uniquenesses such as quick-fried, small in size, light-weight is widely used for the measurement of a variety of physical quantitys, such as displacement, speed
Degree, temperature, the measurement of pressure etc..Currently, reflection type optical fiber sensing probe is mainly fiber optic bundle formula and plastics twin-core fiber formula
Two major classes.Existing these two types optical fiber sensing probe information transmission range is only several meters or tens of rice, is not used to remote information
Transmission.
The distance of quartz glass optical fiber twin-core reflex sensing probe transmission information is able to satisfy remote information transmission, but its
In the production process, it in order to obtain certain spacing between two fiber cores, needs to carry out optical fiber clad with extraordinary corrosion material
Corruption is melted, to obtain outer diameter appropriate, it is also necessary to which special clamping tool splicing can just obtain the probe body of double-core parallel, time-consuming to take
Power, and be not easy to guarantee quality, the performance of ideal stability can not be obtained.Quartz glass optical fiber twin-core reflex sensing probe exists
Main problem be manufacturing process complexity, high production cost, it is difficult to reach theoretical performance, therefore such product not yet energy at present
It produces.
Utility model content
The purpose of this utility model is to design a kind of reflective double optical fiber sensing probes, two identical or different gauges
The quartz glass optical fiber of very little outer diameter and core diameter, is through in capillary glass tube, and outer casing stainless steel protection pipe has high temperature gluing each other
Fixation is connect, end face is concordant and polishes.
The reflective double optical fiber sensing probes of one kind of the utility model design, including 2 quartz glass optical fibers, are through in parallel
In capillary glass tube, outer casing stainless steel protection pipe has high temperature glue sticking solid between optical fiber, capillary glass tube and stainless steel protection pipe
Fixed, one end of optical fiber, capillary glass tube and stainless steel protection pipe flushes, for the polished end faces of probe.The 2 quartz glass light
Fibre core diameter is similar and different, and coat, the outer diameter of fibre cladding on peeling optical fibre surface are identical, and the sum of cladding outer diameter is equal to glass
Glass capillary inner diameter, the sum of the outer diameter of 2 quartz glass optical fibers with coat are greater than capillary glass tube internal diameter, glass fiber
Tubule outer diameter is equal to or less than stainless steel protection bore.
2 quartz glass optical fibers have identical cladding outer diameter and core diameter, and the light big for the core diameter of optical fiber, covering is thin
It is fine.The core diameter of 2 quartz glass optical fibers is 105 μm, and cladding outer diameter is 125 μm；The capillary glass tube internal diameter is 250 μ
m。
The cladding outer diameter of 2 quartz glass optical fibers is identical, core diameter is different, and one is that the core diameter of optical fiber is big, covering is thin
Optical fiber, another optical fiber for core diameter parcel thickness.The core diameter of 2 quartz glass optical fiber one is 105 μm, cladding outer diameter
It is 125 μm, another core diameter is 62.5 μm, and cladding outer diameter is 125 μm.The capillary glass tube internal diameter is 250 μm.
The internal diameter of described capillary glass tube one end expands as horn mouth, to be inserted into optical fiber.
The capillary glass tube length is 4~10mm.The horn mouth length is the 5~20% of capillary glass tube length.
The length of the stainless steel protection pipe is equal to the capillary glass tube length+(0~2mm).
When a kind of reflective double optical fiber sensing probes preparation of the utility model design, optical fiber one end strips coat, light
High-temp glue is coated outside fine covering, capillary glass tube is inserted into optical fiber one end of 2 only coverings, due to the cladding outer diameter of 2 optical fiber
The sum of be equal to capillary glass tube main body internal diameter, 2 optical fiber are parallel to capillary glass tube center line in capillary glass tube；Glass
Stainless steel protection pipe is inserted into after capillary outer wall gluing, the two center line is overlapped, the capillary glass tube one that the optical fiber of insertion stretches out
It holds concordant with stainless steel protection pipe end.High temperature adhesive curing rear end face grinding and polishing, the plane and capillary glass tube central axis.
Two optical fiber of the other end are fixed at tail optical fiber, or are connected to fiber connector.
Compared with prior art, the advantages of a kind of reflective double optical fiber sensing probes of the utility model are as follows: 1, this is practical new
The probe of type can remote transmission information, transmission range up to thousands of rice even it is farther, meet and wanted with optical fiber teletransmission information
It asks；2, this probe uses the quartz glass optical fiber of two identical or different standard size cladding outer diameters and core diameter, is through therewith
In the capillary glass tube of cooperation, the tolerance fit of fibre cladding outer diameter and capillary glass tube internal diameter guarantees that 2 optical fiber are parallel；3,
Due to there is a cladding outer diameter of standard, when optical fiber processing, only needs to strip coat, without being corroded, enormously simplifies existing stone
The production technology of English glass optical fiber probe, and the quartz glass optical fiber of standardized production have the cladding outer diameter of standard, ensure that with
The tolerance fit of capillary glass tube, to ensure that the quality of probe and performance are stablized；4, simple process is not necessarily to dedicated tooling
Fixture, if the temperature and time that is adhesively fixed of strict control high-temp glue, and complete the grinding and polishing of end face, that is, it can guarantee matter
Amount, therefore unified technological specification can be worked out and carry out volume production, it is ensured that homogeneity of product is high, at low cost, is suitble to reflection type optical fiber sensing
Probe and production and popularization and application, are conducive to batch production.
Detailed description of the invention
Fig. 1 is the overall appearance schematic diagram of this reflective double optical fiber sensing probe embodiment 1；
Fig. 2 is the end structure illustration of this reflective double optical fiber sensing probe embodiment 1；
Fig. 3 is the vertical section structure schematic diagram of this reflective double optical fiber sensing probe embodiment 1；
Fig. 4 is the end structure illustration of this reflective double optical fiber sensing probe embodiment 2；
Fig. 5 is the vertical section structure schematic diagram of this reflective double optical fiber sensing probe embodiment 2.
Figure label are as follows:
1, stainless steel protection pipe, 2, optical fiber, 21, the fibre core that core diameter is 105 μm, 22, the fibre core that core diameter is 62.5 μm, 23,
Covering, 24, coat, 3, cured high-temp glue, 4, capillary glass tube.
Specific embodiment
Below with reference to embodiment and attached drawing, the utility model is described in further detail.
Reflective double optical fiber sensing probe embodiments 1
This reflective double optical fiber sensing probe embodiment 1 is the double optical fiber sensing probes of different core as shown in Figures 1 to 3.2 strippings
It except the quartz glass optical fiber of the coat of optical fiber surface, is through in capillary glass tube in parallel, outer casing stainless steel protection pipe, each other
There is high-temp glue to be adhesively fixed, the end face of optical fiber, capillary glass tube and stainless steel protection pipe, for the end face of probe.This example 2
One is the optical fiber that core diameter is big, covering is thin in quartz glass optical fiber, and core diameter is 105 μm, and cladding outer diameter is 125 μm；Another light
Fibre is the optical fiber that core diameter is small, covering is thick, and core diameter is 62.5 μm, and cladding outer diameter is also 125 μm.
This example capillary glass tube inner major diameter is 250 μm, and one end internal diameter is extended to 500 μm as horn mouth.This example glass
Capillary pipe length is 6mm, and bell-mouthed length is 1mm.
The internal diameter of this example stainless steel protection pipe is identical as capillary glass tube outer diameter, length and this example capillary glass tube length
It is equal.
Reflective double optical fiber sensing probe embodiments 2
This reflective double optical fiber sensing probe embodiment 2 is the double optical fiber sensing probes of same core as shown in Figures 4 and 5.2 phases
The quartz glass optical fiber of the coat on same peeling optical fibre surface, is through in capillary glass tube, outer casing stainless steel protection pipe in parallel,
There is high-temp glue to be adhesively fixed each other, the end face of optical fiber, capillary glass tube and stainless steel protection pipe, for the end face of probe.
2 quartz glass optical fibers of this example are the optical fiber that core diameter is big, covering is thin, and core diameter is 105 μm, and cladding outer diameter is 125 μm.
It is other same as Example 1.
Reflective double optical fiber sensing probe embodiments 3
This reflective double optical fiber sensing probe embodiment 3 is the double optical fiber sensing probes of same core.2 quartz glass optical fibers of this example
It is the optical fiber that core diameter is small, covering is thick, core diameter is 62.5 μm, and cladding outer diameter is 125 μm.
It is other same as Example 1.
Reflective double optical fiber sensing probe comparative examples
It is 62.5 μm with core diameter, clad outer diameter is 125 μm of two optical fiber, due to the cladding outer diameter of not no standard, only
It can carry out corruption to the clad of optical fiber to melt, obtaining the remaining clad outer diameter of optical fiber is 80 μm；Corruption melts process without standard technology.Two
Optical fiber is inserted into capillary glass tube, and two fiber cores spacing are 80 μm, high temperature adhesive curing.Add stainless steel protection pipe；Carry out end face processing.
Reflective double optical fiber of the above-mentioned reflective double optical fiber sensing probe embodiments 1 to 3 of the utility model and comparative example
The probe power and product qualified rate of sensing probe, production efficiency correlation data are as shown in table 1.
1 the present embodiment of table and comparative example make the correlation data table of reflective double optical fiber sensing probes
* reflection peak optical power value when 100 μ w of input optical power
After technique completion is melted in * corruption, the remaining cladding outer diameter of optical fiber is 80 μm
By upper table data as it can be seen that although 3 qualification rate height of embodiment is at low cost, input identical 100 μ w of optical power when it is anti-
It is too low to penetrate peak optical powers, performance is too poor, and practical value is little.
Embodiment 1,2 and comparative example obtain similar superperformance index, but the qualification rate of comparative example is too low, cost
Height is difficult to produce in enormous quantities.
Above-described embodiment is only further described the purpose of this utility model, technical scheme and beneficial effects
Specific case, the utility model are not limited to this.All any modifications made within the scope of disclosure of the utility model,
Equivalent replacement, improvement etc., are included in the protection scope of the present invention.
Claims (8)
1. a kind of reflective double optical fiber sensing probes, including 2 quartz glass optical fibers, are through in capillary glass tube, housing in parallel
Stainless steel protection pipe has high-temp glue to be adhesively fixed between optical fiber, capillary glass tube and stainless steel protection pipe；Optical fiber, glass capillary
One end of pipe and stainless steel protection pipe flushes, for the polished end faces of probe, it is characterised in that:
2 quartz glass optical fiber core diameters are similar and different, the outer diameter of the fibre cladding after the coat on peeling optical fibre surface
It is identical, and the sum of cladding outer diameter is equal to capillary glass tube internal diameter, 2 quartz glass optical fibers have the sum of the outer diameter of coat
Greater than capillary glass tube internal diameter, it is equal to or less than stainless steel protection bore.
2. reflective double optical fiber sensing probes according to claim 1, it is characterised in that:
2 quartz glass optical fibers have identical cladding outer diameter and core diameter, and the optical fiber big for the core diameter of optical fiber, covering is thin；
Alternatively, the cladding outer diameter of 2 quartz glass optical fibers is identical, core diameter is different, one is the light that the core diameter of optical fiber is big, covering is thin
Fibre, another is the optical fiber that core diameter is small, covering is thick.
3. reflective double optical fiber sensing probes according to claim 2, it is characterised in that:
The core diameter of 2 quartz glass optical fibers is 105 μm, and cladding outer diameter is 125 μm；The capillary glass tube internal diameter is 250 μ
m。
4. reflective double optical fiber sensing probes according to claim 2, it is characterised in that:
The core diameter of 2 quartz glass optical fiber one is 105 μm, and cladding outer diameter is 125 μm, and another core diameter is 62.5 μm,
Cladding outer diameter is 125 μm；The capillary glass tube internal diameter is 250 μm.
5. reflective double optical fiber sensing probes according to any one of claim 1 to 4, it is characterised in that:
Described capillary glass tube one end internal diameter expands as horn mouth.
6. reflective double optical fiber sensing probes according to claim 5, it is characterised in that:
The capillary glass tube length is 4~10mm.
7. reflective double optical fiber sensing probes according to claim 5, it is characterised in that:
The bell-mouthed length is the 5~20% of capillary glass tube total length.
8. reflective double optical fiber sensing probes according to claim 5, it is characterised in that:
The length of the stainless steel protection pipe is equal to the capillary glass tube length+(0~2mm).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821313964.1U CN208459658U (en) | 2018-08-15 | 2018-08-15 | A kind of reflective double optical fiber sensing probes |
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| CN201821313964.1U CN208459658U (en) | 2018-08-15 | 2018-08-15 | A kind of reflective double optical fiber sensing probes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108776377A (en) * | 2018-08-15 | 2018-11-09 | 中国电子科技集团公司第三十四研究所 | The reflective double optical fiber sensing probes of one kind and preparation method |
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2018
- 2018-08-15 CN CN201821313964.1U patent/CN208459658U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108776377A (en) * | 2018-08-15 | 2018-11-09 | 中国电子科技集团公司第三十四研究所 | The reflective double optical fiber sensing probes of one kind and preparation method |
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