CN102322876A - Passive phase compensation structure for all-optical-fiber interferometer and manufacture method thereof - Google Patents
Passive phase compensation structure for all-optical-fiber interferometer and manufacture method thereof Download PDFInfo
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- CN102322876A CN102322876A CN201110255841A CN201110255841A CN102322876A CN 102322876 A CN102322876 A CN 102322876A CN 201110255841 A CN201110255841 A CN 201110255841A CN 201110255841 A CN201110255841 A CN 201110255841A CN 102322876 A CN102322876 A CN 102322876A
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Abstract
本发明涉及一种全光纤干涉仪被动相位补偿结构，包括内部开设有环形凹槽的发泡橡塑绝热材料体，所述环形凹槽内容纳有光纤干涉环，所述发泡橡塑绝热材料体外依次包裹有内层铝箔纸层、第一复合型陶瓷绝热涂料层、第一DOK聚酯玻璃介质板层、特殊聚氨酯高分子吸音隔热材料层、第二DOK聚酯玻璃介质板层、第二复合型陶瓷绝热涂料层、绝热保温材料层、发泡橡塑绝热材料层和外层铝箔纸层。本发明达到了一个高稳定被动相位补偿水平，实验表明，本发明的被动补偿结构使得置于其中的全光纤干涉仪的单位长度臂长差相位漂移速度大大减小。
The invention relates to a passive phase compensation structure of an all-fiber interferometer, which comprises a foamed rubber and plastic heat insulating material body with an annular groove inside, and an optical fiber interference ring is accommodated in the annular groove, and the foamed rubber and plastic heat insulating material The body is wrapped in sequence with an inner layer of aluminum foil paper, the first composite ceramic heat-insulating coating layer, the first DOK polyester glass dielectric layer, special polyurethane polymer sound-absorbing and heat-insulating material layer, the second DOK polyester glass dielectric layer, and the second DOK polyester glass dielectric layer. 2. Composite ceramic thermal insulation coating layer, thermal insulation material layer, foam rubber and plastic thermal insulation material layer and outer aluminum foil paper layer. The invention achieves a highly stable passive phase compensation level, and experiments show that the passive compensation structure of the invention greatly reduces the phase drift speed per unit length arm length difference of the all-fiber interferometer placed therein.
Description
Technical field
The present invention relates to the fibre optic interferometer technical field, be specifically related to passive phase compensation structure of a kind of full optical fiber interferometer and preparation method thereof.
Background technology
Interference is the fundamemtal phenomena of optics, utilizes optical fiber to realize interference of light, is the important application of light interference phenomena.Full optical fiber interferometer utilizes optical fiber to replace the lens combination formation, and except beam splitter, other all light paths all are formed by connecting with optical fiber, so be referred to as full optical fiber interferometer in whole instrument.But full optical fiber interferometer is widely used in technical fields such as Fibre Optical Sensor, optical fiber communication, quantum secret communication because of plurality of advantages such as its shape vary, body weight are light, compact conformation and sensitivity height.Its basic functional principle is: utilize optical device such as beam-splitting coupler, catoptron to be divided into two-way or multichannel to a branch of light earlier, not going the same way through each then is transferred to each coincident configuration one-tenth stack interference again along separate routes of the other end (perhaps being transferred to the other end after initial point is got back in anti-mirror reflection) through (being referred to as " arm ").Each arm (path) can be made identical length as required also can make different length; Like this; If external environment is such as factors vary such as temperature, noise, vibrations, slight variation will take place in optical fibre refractivity on each arm or fiber lengths, will produce influence in various degree to different arms like this; If transmitting, light will produce the different optical path variation on different arms; Cause that promptly phase differential between each arm is fixing and form random drift with external environmental interference, make that full optical fiber interferometer can not correct extraction information, finally influence the operate as normal of full optical fiber interferometer.So, just be necessary very that full optical fiber interferometer is carried out effective passive phase compensation to be handled, and reduces the influence of external environment to it as far as possible in order to make full optical fiber interferometer ability operate as normal.Passive phase compensation comprise adopt low expansion coefficient material make interference ring, adopt the integrated technique etching interfere bad, increase shock attenuation device and carry out precise dose control etc.All have corresponding research group to do this passive phase compensation technology at present both at home and abroad, but effect not fine, and do not have corresponding matured product on the market.And this patent is exactly the passive phase compensation structure that adopts low-down thermal expansivity, coefficient of heat conductivity material and very high soundproof effect material to make interference ring.
Summary of the invention
The technical matters that the present invention solves is the deficiency that overcomes prior art, and a kind of passive phase compensation structure of full optical fiber interferometer with high stable level and preparation method thereof is provided.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is following:
The passive phase compensation structure of a kind of full optical fiber interferometer; Comprise that inside offers the foamed rubber-plastic heat insulation material body of annular groove; Accommodate the fiber optic interferometric ring in the said annular groove, external unlined aluminium foil paper layer, the first composite ceramic adiabatic coating layer, a DOK polyester glass medium flaggy, special polyurethane high molecule sound-absorbing insulation material layer, the 2nd DOK polyester glass medium flaggy, the second composite ceramic adiabatic coating layer, heat-insulating material layer, foamed rubber-plastic heat insulation material layer and the outer foil ply of paper of being enclosed with successively of said foamed rubber-plastic heat insulation material; The optical fiber that is used to be connected to the external signal input and output on the said full optical fiber interferometer passes from layers of material.The bipeltate that foamed rubber-plastic heat insulation material body among the present invention and foamed rubber-plastic heat insulation material layer are adopted; Be the nitrile rubber with excellent performance, PVC is a primary raw material, through banburying; Special process such as sulfur foam are processed, and have good thermal insulation, insulation effect.The aluminium foil ply of paper has characteristics such as light reflectivity height, airtight, waterproof, good seal performance and heat reflectivity height, thereby possesses thermal radiation resistant, heat-blocking action.Composite ceramic adiabatic coating layer has the adiabatic heat-insulation effect.DOK polyester glass medium flaggy can completely cut off the infrared ray up to 90%; Have fast light, water-fast, moisture-proof, characteristic such as high temperature resistant; Play the effect of sealing, thermal insulation and support structure, as the media that depends on of special polyurethane high molecule sound-absorbing insulation material layer and composite ceramic adiabatic coating layer.Special polyurethane high molecule sound-absorbing insulation material layer plays deadening, and sound transmission loss is up to 42dB.Composite ceramic adiabatic coating layer plays thermal insulation, insulation effect.The present invention has adopted the good macromolecule sound-proof material of multiple coefficient of heat conductivity very low special thermal insulation, insulation material and sound insulation value; And adopted multi-layer sealed technology to handle; Be sealed in the inside one deck to the full optical fiber interference ring of required protection; By the lining toward various heat-insulating materials of sealed package in layer and sound insulation, radiation proof material; Thereby greatly reduce to place innermost fiber optic interferometric ring because of external environment condition changes suffered influence, reached a passive phase compensation level of high stable.
The fiber optic interferometric ring that full optical fiber interferometer is turned to ring-type can improve the integrated level of structure, but must be too severe if optical fiber is crooked, and its loss meeting becomes very big; And around crossing the final size that conference increases structure; Therefore under the prerequisite that guarantees enough integrated levels, that tries one's best encompasses one than circlet, through the experiment proof; Preferred sizes does; Internal diameter>=the 9cm of said fiber optic interferometric ring, external diameter≤20cm, the radial width scope 0.1-0.5cm of said fiber optic interferometric ring; The internal diameter of said annular groove is less than the internal diameter of fiber optic interferometric ring, and external diameter is greater than the external diameter of fiber optic interferometric ring.The magnitude relationship of the internal diameter of fiber optic interferometric ring, external diameter and radial width is: (outside dimension) deducts (internal diameter size) and equals (radial width 2 times).
Foamed rubber-plastic heat insulation material layer thickness scope is 0.5-1cm; Wet resistance factor mu>=10000 of said foamed rubber-plastic heat insulation material body and foamed rubber-plastic heat insulation material layer, coefficient of heat conductivity λ≤0.034W/ (mK).
The thickness range of the said first composite ceramic adiabatic coating layer and the second composite ceramic adiabatic coating layer is 0.2-0.4cm, coefficient of heat conductivity≤0.054 W/ (mK).
The thickness range of a said DOK polyester glass medium flaggy and the 2nd DOK polyester glass medium flaggy is 0.3-0.4cm.
The thickness range of unlined aluminium foil paper layer and outer foil ply of paper is 0.03-0.05cm, and light reflectivity and heat reflectivity are all greater than 90%.
The material of said heat-insulating material layer is an aerosil; Aerosil is known as " blue smoke ", " solid cigarette " again; It is present the lightest known solid material; Also be heat-insulating property best material up to now, coefficient of heat conductivity is 0.013-0.025 W/ (mK), and thickness range is 0.5-2cm.And aerosil lightweight, transparent is very good heat-insulating material.Obviously, other the solid, powdery material littler than aerosil coefficient of heat conductivity is applicable to the present invention too.
Said foamed rubber-plastic heat insulation material shape is rectangular parallelepiped, cylinder or spheroid.For effective fixed fiber interference ring, reduce its influence of outer bound pair simultaneously to greatest extent, the space between said annular groove and fiber optic interferometric ring is filled with aerosil, to play the effect of direct more adiabatic heat-insulation, avoids ectocine.Simultaneously because and the space between the annular groove be filled full, also can be effectively shockproof, prevent that the fiber optic interferometric ring from rocking in annular groove.
The method for making of the passive phase compensation structure of above-mentioned full optical fiber interferometer may further comprise the steps:
In the said step 2, full aerosil is filled in the space between annular groove and the fiber optic interferometric ring.
Compared with prior art; The beneficial effect of technical scheme of the present invention is: the present invention has adopted the good macromolecule sound-proof material of multiple coefficient of heat conductivity very low special thermal insulation, insulation material and sound insulation value; And adopted multi-layer sealed technology to handle; Be sealed in the inside one deck to the full optical fiber interference ring of required protection; By the lining toward various heat-insulating materials of sealed package in layer and sound insulation, radiation proof material, thereby greatly reduce to place innermost fiber optic interferometric ring because of the suffered influence of external environment condition variation, reached a passive phase compensation level of high stable.And simultaneously, experimental data also shows, adopts the stability of the full optical fiber interferometer of the passive phase compensation structure of the present invention to obtain very big raising than prior art.
Description of drawings
The passive phase compensation structural perspective of Fig. 1 full optical fiber interferometer of the present invention;
The cross-sectional view of Fig. 2 Fig. 1;
Fig. 3 is the test pattern of the passive phase compensation structure of full optical fiber interferometer of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is done further explanation.
As depicted in figs. 1 and 2 is the passive phase compensation structural representation of full optical fiber interferometer of the present invention; Make for ease; Be rectangular shape, concrete structure comprises that inside offers the foamed rubber-plastic heat insulation material body 10 of annular groove, accommodates fiber optic interferometric ring 11 in the annular groove.It is bigger slightly than fiber optic interferometric ring that annular groove is done, and the internal diameter of annular groove is less than the internal diameter of fiber optic interferometric ring, and external diameter is greater than the external diameter of fiber optic interferometric ring.The internal diameter of fiber optic interferometric ring 11 is 9cm, and external diameter is 9.2cm, and promptly the radial width of fiber optic interferometric ring is 0.1cm.The internal diameter of annular groove is 8cm, and external diameter is 10cm.Foamed rubber-plastic heat insulation material body 10 is a rectangular parallelepiped, and it is fixed that its size is come according to the fiber optic interferometric ring, is standard with receiving optical fiber interference ring fully.In the present embodiment, for economical with materials to a greater extent, the face of the foamed rubber-plastic heat insulation material body 10 that the anchor ring of fiber optic interferometric ring 11 is corresponding is designed to square, and foamed rubber-plastic heat insulation material body 10 is of a size of 12.6cm*12.6cm*2.6cm in the present embodiment.Outside foamed rubber-plastic heat insulation material body 10, be enclosed with unlined aluminium foil paper layer 9, the first composite ceramic adiabatic coating layer 8, a DOK polyester glass medium flaggy 7, special polyurethane high molecule sound-absorbing insulation material layer 6, the 2nd DOK polyester glass medium flaggy 5, the second composite ceramic adiabatic coating layer 4, heat-insulating material layer 3, foamed rubber-plastic heat insulation material layer 2 and outer foil ply of paper 1 successively.
Two optical fiber A, B being used to be connected to the external signal input and output on the full optical fiber interferometer pass from layers of material, and wherein one is signal input port, and one is signal outlet.
Each layer thickness is following:
Unlined aluminium foil paper layer 9 is 0.05cm with outer foil ply of paper 1 thickness; What adopt is high-performance thermal radiation resistant aluminum foil paper material; Have characteristics such as light reflectivity height, airtight, waterproof, good seal performance, heat reflectivity height, light reflectivity and heat reflectivity are all up to more than 90%;
The first composite ceramic adiabatic coating layer 8 and the second composite ceramic adiabatic coating layer, 4 thickness are 0.3cm, employing be the composite ceramic adiabatic coating of the excellent performance of coefficient of heat conductivity≤0.054W/ (mK).
The thickness of the one DOK polyester glass medium flaggy 7 and the 2nd DOK polyester glass medium flaggy 5 is 0.4cm, and the DOK polyester glass medium sheet material material of this layer employing can completely cut off the infrared ray up to 90%, fast light, water-fast, moisture-proof, high temperature resistant.
Heat-insulating material layer 3 thickness are 1cm, and the material that adopts is an aerosil, and thermal conductivity is minimum in all solids material, and lightweight is transparent, and coefficient of heat conductivity is in 0.013～0.025 W/ (mK) scope.
Foamed rubber-plastic heat insulation material layer 2 thickness are 1cm, and this layer and foamed rubber-plastic heat insulation material body 10 have low-down coefficient of heat conductivity, and coefficient of heat conductivity λ≤0.034W/ (mK) has high wet resistance factor mu>=10000 simultaneously.
For the interferometer of different brachiums, the arm length difference between the dissimilar arm and the stability of interferometer are inversely proportional to, and promptly under the identical situation of other condition, arm length difference is big more, and stability is just poor more.If weigh the stability of interference ring with unit arm length difference phase drift speed, passive phase compensation technology at present both domestic and external, the level of stability that generally can accomplish is: the average of unit arm length difference phase drift speed is about 0.2rad/min.And shown in unit length arm length difference phase change test pattern among Fig. 3; The passive phase compensation structure of present embodiment; The average of unit length arm length difference phase drift speed is 0.06 rad/min, and unit length arm length difference phase drift speed can reach about 0.01 rad/min when more stable.This shows, improved the stability of full optical fiber interferometer than prior art the present invention greatly.
The method for making of the passive phase compensation structure of above-mentioned full optical fiber interferometer may further comprise the steps:
Offering annular groove in the step 2 with the concrete grammar of laying the fiber optic interferometric ring is:
(2.1) become the foamed rubber-plastic material cut foamed rubber-plastic heat insulation material body 10 of the rectangular shape of above-mentioned size;
(2.2) be as the criterion 2/3 place of foamed rubber-plastic heat insulation material body 10 to cut into two halves with height;
(2.3) be cutting out thickness that 2/3 this piece is as the criterion with the center, dig an internal diameter and be 8cm, external diameter and be 10cm, the degree of depth annular groove for half the (first step cut out rectangular parallelepiped thickness 1/3) of this piece thickness; Above-mentioned size can be adjusted according to the size of fiber optic interferometric ring 11, as long as enough spaces that is used for the receiving optical fiber interference ring can be provided.
(2.4) put the fiber optic interferometric ring into annular groove, recharge full aerosil;
(2.5) use " NCC insulation glue " with foamed rubber-plastic material adapted to become original rectangular structure to this two-layer the sticking on that just is cut into two halves.
The concrete steps of making first box body in the step 4 are:
(4.1) coat special polyurethane high molecule sound-absorbing insulation material layer 6 at two blocks of DOK polyester glass medium plates (i.e. a DOK polyester glass medium flaggy 7 and the 2nd DOK polyester glass medium flaggy 5) opposite face; Same method is made six faces; Be glued together with the polyester glass glue then and make a rectangular parallelepiped box; It is earlier bonding without the polyester glass glue to reserve a face, keeps and does lid.
(4.2) be coated in the inside surface and the outside surface of each face of the rectangular parallelepiped of above making with the composite ceramic adiabatic coating; Form the first composite ceramic adiabatic coating layer 8 at inside surface; Outside surface forms the second composite ceramic adiabatic coating layer 4, is made into first box body.This first box body essence plays good sound-insulating effect, can be referred to as " sound-insulating box ".
(4.3) put the structure of the gained of step 3 in " sound-insulating box ", good behind the cover lid with " polyester glass glue " adhesive seal.
Because noise is very big to the influence of fibre optic interferometer, to handle so will do sound insulation, the special polyurethane high molecule sound-absorbing insulation material oise insulation factor in the step 4 has satisfied the sound insulation demand fully up to 42dB.DOK polyester glass medium plate plays the effect of sealing, thermal insulation, support structure, and can let special polyurethane high molecule sound-absorbing insulation material and composite ceramic adiabatic coating be coated in its surface and the very firm bonding effect of formation, difficult drop-off.
In the step 5 be utilize foamed rubber-plastic heat insulation material and with it the NCC insulation glue of adapted make second box body of rectangular shape, it is same that to reserve one side not bonding as lid.
When in the step 6 first box body being placed second box body,, also can in the space of first box body and second box body, fill the foam rubbery material of fritter in order better to process and locate second box body.So that first box body is positioned at the centre of second box body.After aerosil to be filled finishes, cover the lid of first box body of reserving in the step 5, and good with NCC insulation glue adhesive seal.
Present embodiment and embodiment 1 are similar, and difference only is that the size of layers of material is different:
The internal diameter of fiber optic interferometric ring 11 is 14cm, the 14.4cm of external diameter, and promptly the radial width of fiber optic interferometric ring is 0.2cm.The internal diameter of annular groove is 13cm, and external diameter is 15cm;
Unlined aluminium foil paper layer 9 is 0.03cm with outer foil ply of paper 1 thickness;
The first composite ceramic adiabatic coating layer 8 and the second composite ceramic adiabatic coating layer, 4 thickness are 0.2cm;
The thickness of the one DOK polyester glass medium flaggy 7 and the 2nd DOK polyester glass medium flaggy 5 is 0.3cm;
Heat-insulating material layer 3 thickness are 0.5cm;
Foamed rubber-plastic heat insulation material layer 2 thickness are 0.5cm.
Present embodiment and embodiment 1 are similar, and difference only is that the size of layers of material is different:
The internal diameter of fiber optic interferometric ring 11 is 19cm, the 20cm of external diameter, and promptly the radial width of fiber optic interferometric ring is 0.5cm.The internal diameter of annular groove is 18cm, and external diameter is 21cm;
Unlined aluminium foil paper layer 9 is 0.04cm with outer foil ply of paper 1 thickness;
The first composite ceramic adiabatic coating layer 8 and the second composite ceramic adiabatic coating layer, 4 thickness are 0.4cm;
The thickness of the one DOK polyester glass medium flaggy 7 and the 2nd DOK polyester glass medium flaggy 5 is 0.35cm;
Heat-insulating material layer 3 thickness are 2cm;
Foamed rubber-plastic heat insulation material layer 2 thickness are 0.9cm.
Present embodiment and embodiment 3 are similar, and difference only is that the internal diameter of said fiber optic interferometric ring 11 is 19.8cm, and external diameter still is 20cm, and promptly the radial width of fiber optic interferometric ring is 0.1cm.
Claims (10)
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109163738A (en) * | 2018-09-03 | 2019-01-08 | 中国科学院上海光学精密机械研究所 | A kind of packaging method of integrated optical fiber interferometer module |
| CN111998172A (en) * | 2019-05-27 | 2020-11-27 | 北京中创为南京量子通信技术有限公司 | Vibration-damping and heat-insulating device and vibration-damping and heat-insulating optical fiber interferometer equipment |
| CN113572532A (en) * | 2021-04-14 | 2021-10-29 | 华南师范大学 | Active phase compensation method and device for optical fiber interference ring and quantum key distribution system |
| US11828689B2 (en) | 2020-10-29 | 2023-11-28 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample capture and extraction |
| US12196672B2 (en) | 2020-05-07 | 2025-01-14 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample testing |
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| US12422362B2 (en) | 2020-05-07 | 2025-09-23 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample testing |
| US12196672B2 (en) | 2020-05-07 | 2025-01-14 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample testing |
| US12498328B2 (en) | 2020-05-07 | 2025-12-16 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample testing |
| US12449356B2 (en) | 2020-05-07 | 2025-10-21 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample testing |
| US12422360B2 (en) | 2020-05-07 | 2025-09-23 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample testing |
| US12422361B2 (en) | 2020-05-07 | 2025-09-23 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample testing |
| US12352670B2 (en) | 2020-10-29 | 2025-07-08 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample capture and extraction |
| US11852568B2 (en) | 2020-10-29 | 2023-12-26 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample capture and extraction |
| US11852567B2 (en) | 2020-10-29 | 2023-12-26 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample capture and extraction |
| US11846574B2 (en) | 2020-10-29 | 2023-12-19 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample capture and extraction |
| US11828689B2 (en) | 2020-10-29 | 2023-11-28 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample capture and extraction |
| CN113572532B (en) * | 2021-04-14 | 2022-06-28 | 华南师范大学 | Active phase compensation method and device for optical fiber interference ring and quantum key distribution system |
| CN113572532A (en) * | 2021-04-14 | 2021-10-29 | 华南师范大学 | Active phase compensation method and device for optical fiber interference ring and quantum key distribution system |
| US12553885B2 (en) | 2023-01-18 | 2026-02-17 | Hand Held Products, Inc. | Apparatuses, systems, and methods for sample testing |
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