CN2646728Y - Temperature compensation device for fiber optic component - Google Patents
Temperature compensation device for fiber optic component Download PDFInfo
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- CN2646728Y CN2646728Y CN 03266885 CN03266885U CN2646728Y CN 2646728 Y CN2646728 Y CN 2646728Y CN 03266885 CN03266885 CN 03266885 CN 03266885 U CN03266885 U CN 03266885U CN 2646728 Y CN2646728 Y CN 2646728Y
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- temperature
- temperature compensation
- compensation means
- fiber optic
- optic component
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Abstract
The utility model relates to a device which can compensate the component deformation causing by expansion and contraction according to the temperature changing. The utility model comprises a component waited for temperature compensating and a material compensated the component deformation causing by expansion and contraction; the material adopted the CTE aeolotropies of the continuous fiber macromolecule composite material monolayer sheet permeates through the lamination and chooses the lamination numbers and the fiber direction of each layer, and the appointed characteristic that expanding when cooled and contracting when heated is achieved on the specifically direction of laminate plate. When the component waited for temperature compensating fixed on the composite material laminate plate along the specifically direction, the deformation of the component waited for temperature compensating causing by the temperature changing can be offset by the contraction and expansion of the compensated material.
Description
Technical field
The utility model relates to a kind of fiber optic component that compensates and is subjected to temperature variation and produces the deformation of expanding with heat and contract with cold, especially refer to when external variation of ambient temperature, the deformation that can vary with temperature originally and change obtains temperature compensation because of this compensation system is arranged, and makes this element to temperature-insensitive.
Background technology
Optical communication device expects that all high stability can be arranged, with the filter element is example, (1530-1565nm) desired frequency spectrum spacing needs within 0.8nm in traditional wave band, when this stability can be subjected to the variation of ambient temperature because of filter element (as fiber grating), its reflection wavelength (title bragg wavelength) has the situation of drift and destroys, and this situation causes the signal erroneous judgement easily in communication.Therefore do not vary with temperature and affected wave filter is most important, this propose that processing procedure is simple, volume size is little, simple in structure, in light weight, cost is cheap, and easy mass-produced temperature compensation means.
G.W, people such as Yoffe once proposed to comprise silicon system sleeve pipe, aluminium alloy lid and nut etc. in nineteen ninety-five, in addition must be by the epoxy resin now, though its effect can reach 0.7pm/ ℃, the program of member that it is required and structure dress is all quite complicated, is not inconsistent practicality.See also G.W.Yoffe, P.A.Kurg, F.Ouellette, and D.A.Thorncraft, " TemPerature-compensated Optical fiber Bragg gratings, " in Optical FiberCommunications, vol.8 of 1995 Osa technical Digest SerieS (Optical Societyof America, Washington, D.C., 1995) pp.134-135.
T.Iwashima utilized in the cooperation of liquid crystal polymer pipe in 1997 and fills out epoxy resin, utilize the difference of two kinds of material thermal expansion coefficients, carrier as thermal compensation, the strain that the carrier temperature influence produces is transferred on the fiber grating, to do compensating movement, though the effect of its compensation only can reach 1.3Pm/ ℃, however its device easy than Yoffe etc.See also T.Iwashima, A.Inoue, M.Shigematsu, M.Nishimura, and Y.Hattori, " Temperature compensationtechnique for fiber Bragg gratings using liquid crystalline polymer tubes; " Electron.lett., vol.33, pp.417-419,1997.
2000, people such as Mill are superimposed with quartzy and 300 Bu Rust steel, optical fiber is pasted on quartz, produce suitable strain by two material coefficient of thermal expansion coefficients difference, compressed or stretching optical fiber, make the drift value of fiber grating obtain revisal, yet its material is frangible, the weight of material constitutes heavy load to the optical fiber of material fragility on side direction.See also Miller etal., " Temperature compensated fiber Bragg gratings, " U.S.Patent 6,044,189,1997.
People such as the Beall of U.S. CORNING glass company (Corning Glass Work) are developed the stupalith that a kind of pyrocondensation cold expanding, fiber grating is fixed thereon, the drift amount of wavelength can be constrained to 1.212pm/ ℃, and the temperature compensation performance of this invention is general, and material is frangible pottery.See also Beall et al., " Athermal optical device, " U.S.Patent 6,087,280,2000.
Calendar year 2001, the thermal expansivity difference that people such as Prohaska proposition has calcitization compound (calcite) all directions of anisotropic crystallization (anisotropiccrystal) characteristic can find the direction that is fit to provide the required compressive strain of optical fiber grating temperature compensation because of thermal expansion is incompatible.Yet, when making the calcitization compound, its components in proportions, comprise aluminium oxide, titanium dioxide, lime carbonate etc., all must be very accurate, if ratio has discrepancy slightly, then the distribution curve of thermal expansivity just produces change, and the angle of required arrangement also will be adjusted thereupon; In addition, the angle of arrangement also is easy to generate deviation, and causes the result of over-compensation or empty compensation, so that required wavelength stability is not as expection, so the practicality of method is not high.See also Prohaska et al., " Temperaturecompensated fiber grating and method for compensating temperature variationin fiber grating, " U.S.Patent 6,240,225,2001.
2002, people such as Lin made the encapsulation of compensation temperature respectively at " 25 ℃ with down to-40 ℃ " and two situations of " more than 25 ℃ to 80 ℃ ".During with regard to the compensation of low temperature aspect, the mechanism that adopts must be just to overlap simple fiber clamping when room temperature, screw with nut again, when temperature reduces the situation generation that causes bragg wavelength drift downwards, just rotary nut, the sleeve of the inboard grip optical fiber of nut is elongated optical fiber, make wavelength obtain suitable revisal.Yet in the compensation mechanism of high temperature, but must given one draw pre-power earlier,, the wavelength of drift can be obtained revising so that when temperature raises, do the action that discharges stress; The compensation system structure of this two mechanism is very complicated.See also Lin etal., " Temperature-compensating device with tunablemechanism for optical fiber gratings, " U.S.Patent 6,374,015,2002.
This creator has the disappearance of supervising in the said temperature compensation system to mainly contain several respects: structure is too complicated, weight is light and handy inadequately, frangible, and wavelength is still not satisfactory to stablizing of temperature, be to concentrate on studies and cooperate the utilization of scientific principle, propose a kind of reasonable in design and effectively improve the utility model patent case of above-mentioned shortcoming.
The utility model content
Fundamental purpose of the present utility model, promptly on shortcoming, design the temperature compensation means of a fiber optic component, with simple mechanisms and simple structure, can reach element to be compensated to the insensitive function of temperature variation.
Another purpose of the present utility model is to provide a kind of weight light and handy, the fiber grating temperature compensator that volume size is little.
Another purpose of the present utility model is to provide a kind of fiber grating temperature compensator, and cost is cheap, is fit to a large amount of production and cost is further reduced.
The utility model is the element that a kind of Yin Wendu of compensation expands with heat and contract with cold, and comprising: one treats the element of temperature compensation; And one this element of compensation be subjected to temperature and the material that is out of shape; This material is to utilize continuous fiber to strengthen the thermal expansivity anisotropy of polymer composite single-layer sheet (lamina), see through the lamination mode, and select the fiber orientation of lamination number and each layer on demand, can on laminated plates (laminatc) specific direction, obtain the pyrocondensation cold expanding characteristic of appointment.Element to be compensated is as being fixed in along this specific direction on this compound substance laminated plates, then this element to be compensated is subjected to produce stretching or contraction after the temperature variation, can be offseted by pyrocondensation cold expanding effects of strain, make it element deformation to be compensated is able to revisal in response to the effect that becomes.Utilize continuous fiber to strengthen the thermal expansion coefficient difference of polymer composite single-layer sheet (lamina) different directions, see through the fiber orientation of lamination mode, synusia number and each layer, can obtain the pyrocondensation cold expanding characteristic of appointment on laminated plates (laminate) specific direction, this element to be compensated is fixed on this compound substance laminated plates along this specific direction; Increased by temperature, element to be compensated can outwards be upheld, and the temperature increase causes the laminated plates pyrocondensation and produce the compressive strain effect, element to be compensated is inwardly shunk, increase the element stretch amount to be compensated caused and offset so can reach the reason temperature, do not increase and change with temperature to keep former component shape to be compensated as far as possible; In like manner, as the same under the state to the temperature reduction.
The utility model relates to a kind of Yin Wendu of compensation and the device of the fiber grating bragg wavelength that drifts about, especially refer to when external variation of ambient temperature, the bragg wavelength that can vary with temperature originally and change, because of there being this compensation system to arrive temperature compensation, make its bragg wavelength to temperature-insensitive.Fiber grating is fixed on this compound substance laminated plates along the compensation system specific direction; Increased by temperature, the fiber grating bragg wavelength can be toward the drift of long wave strong point, and the temperature increase causes the laminated plates pyrocondensation and produce the compressive strain effect, can make the fiber grating bragg wavelength toward the drift of shortwave strong point, because of the latter's drift value can be designed, increase the bragg wavelength drift caused and offset so can reach the reason temperature, do not increase and change with temperature to keep former bragg wavelength as far as possible; In like manner, as the same under the state to the temperature reduction.Of the present utility modelly focus on that the temperature compensation means structure is very simple, volume size is small, in light weight, processing procedure is simple, cost is cheap, and a large amount of easily production.
The utility model discloses a kind of Yin Wendu of compensation and the device of the fiber grating bragg wavelength that drifts about comprises: a waveguide pipe, in order to restriction and transmitting optical signal; One treats the optical element of temperature compensation; And the material of compensated optical fiber grating bragg wavelength drift; This material is to utilize continuous fiber to strengthen the thermal expansivity anisotropy of polymer composite single-layer sheet (lamina), see through the lamination mode, and select the fiber orientation of lamination number and each layer on demand, can on laminated plates (laminate) specific direction, obtain the pyrocondensation cold expanding characteristic of appointment.Fiber grating is as being fixed in along this specific direction on this compound substance laminated plates, then being subjected to produce after the temperature variation fiber grating cloth turns round the lattice wave journey by raft down the Yangtze River and moves, can be offseted by the bragg wavelength drift that pyrocondensation cold expanding effects of strain is caused, make it wavelength of drift is able to revisal in response to the effect that becomes.
Description of drawings
For making the utility model be able to further be understood, the technological means that the utility model is taked will be according to preferred embodiment of the present utility model, and cooperates relevant drawings, be described in detail as follows, wherein:
Fig. 1 is epoxy resin carbon fiber (Gr/Epoxy) the composite lay figure of the utility model one embodiment.
Fig. 2 is the element compensation synoptic diagram to be compensated of the utility model one embodiment.
Fig. 3 is the optical fiber grating temperature compensation synoptic diagram of the utility model one embodiment.
Fig. 4 is the preceding and compensation back curve map of the compensation of the utility model one embodiment.
Fig. 5 is the optical fiber grating temperature compensation synoptic diagram of another embodiment of the utility model.
Embodiment
Referring now to accompanying drawing, the utility model relates to a kind of Yin Wendu of compensation and the device of the fiber grating bragg wavelength that drifts about, especially refer to when external variation of ambient temperature, the bragg wavelength that can vary with temperature originally and change, because of there being this compensation system to arrive temperature compensation, make its bragg wavelength to temperature-insensitive.The main characteristic of this compensation system is to utilize thermal expansivity that continuous fiber strengthens polymer composite single-layer sheet (lamina) different directions difference to some extent, see through the lamination mode, and select superimposed single-layer sheet number and the fiber orientation of each layer on demand, can on the laminated plates after superimposed (laminate) specific direction, obtain pyrocondensation cold expanding (promptly being subjected to thermal shrinkage, the expansion of the catching a cold) characteristic of appointment; Under temperature increased, its bragg wavelength can be toward the drift of long wave strong point, as fiber grating is fixedly sticked on this compound substance laminated plates along above-mentioned specific direction usually for fiber grating; Then when temperature increases, laminated plates is subjected to thermal shrinkage and fiber grating is produced the compressive strain effect, thereby make the fiber grating bragg wavelength toward the drift of shortwave strong point, because of the latter's drift value can be pressed the demand design, see through suitable selection, Ke Yi Shi Yin Wendu increases fiber grating bragg wavelength drift that is caused and the fiber grating bragg wavelength drift that the laminated plates pyrocondensation is caused and offsets, and does not change with the temperature increase to keep former bragg wavelength as far as possible; In like manner, as the same under the state to the temperature reduction.Of the present utility modelly focus on that the temperature compensation means structure is very simple, volume size is small, in light weight, processing procedure is simple, and cost is cheap, and a large amount of easily production.
Embodiment
Now cooperate graphic detailed description to introduce specific embodiment of the utility model:
See also Fig. 1, present embodiment is to adopt thermosetting epoxy resin carbon fibre composite 1, when desire is made laminated plates 4, earlier its carbon fibre composite 1 is planted according to the predetermined number of plies and fiber orientation and be cut to rectangle, and according to the planned number of plies of the machine direction of compound substance and sequence stack such as lamination 2, the forming method commonly used by the compound substance laminated plates adds release layer, puts into vacuum bag and vacuumizes, and puts in order group and place autoclave pressure to heat to pressurize to make 4 one-tenth changes of composite-material laminates.Size cutting on demand sees also Fig. 2 after cooling, and will treat that temperature compensating element 3 pastes on the selected directions in laminated plates 4 surfaces.
Another embodiment
See also Fig. 3, the composite-material laminates 4 that the same specific embodiment is done, size cutting on demand after cooling, and will have the optical fiber 6 usefulness glue 7 of fiber grating 5 to paste on the direction of selecting on laminated plates 4 surfaces.
Another embodiment
See also Fig. 5, present embodiment except that as last embodiment will have optical fiber 6 usefulness the glue 7 of fiber grating 5 paste on the directions of selecting on thermosetting epoxy resin carbon fibre composite laminated plates 4 surface of well cutting, and an end of laminated plates 4 is fixed in the sleeve 9 with sealing 10, the other end of laminated plates 4 is suspended in the sleeve 9, the sleeve other end is with sealing 11 sealings, sleeve 9 outer walls are with PU heat insulation layer 12 parcels, overlap simple 9 inwalls and heat insulation layer 12 outer walls and coat with aluminize reflector layer 13 of minute surface, sleeve 9 inside vacuumize 14, with the variation of blocking ambient temperature with radiation, fiber grating temperature compensator is passed in conduction or convection current, it is long more stable to make fiber grating cloth turn round lattice wave, paste in addition and be fixed in the unsettled end of laminated plates 4, to reach the purpose of adjusting the fiber grating bragg wavelength with suitable counterweight 8.
Seeing also Fig. 4, is the preceding and compensation back curve map of compensation of the utility model one embodiment.
Though preferred embodiment of the present utility model is disclosed by the illustrative purpose of figure, the utility model is not limited thereto.The people who knows this field general technology can understand, and under scope of the present utility model and spirit, modification miscellaneous, to augment and replace be possible.
Claims (9)
1. the temperature compensation means of a fiber optic component is characterized in that, comprising:
One treats that in order to compensation temperature compensating element turns round the compound substance laminated plates of stretching and shrinking the deformation that is caused because of temperature variation;
Wherein above-mentioned compound substance laminated plates is machine direction and the sequence stack that adopts the preimpregnation material composition of continuous fiber reinforcement polymer composite single-layer sheet and comply with design.
2. the temperature compensation means of fiber optic component as claimed in claim 1 is characterized in that, wherein this treats that temperature compensating element comprises fiber grating.
3. the temperature compensation means of fiber optic component as claimed in claim 1 is characterized in that, wherein this treats that temperature compensating element comprises waveguide.
4. the temperature compensation means of fiber optic component as claimed in claim 3 is characterized in that, wherein this treats that temperature compensating element comprises fiber grating.
5. the temperature compensation means of fiber optic component as claimed in claim 1, it is characterized in that, wherein above-mentioned its one-tenth of continuous fiber reinforcement polymer composite laminated plates utilizes difform mould when changing into type, to obtain the laminated plates temperature compensation means from flat board to differently curved radian.
6. the temperature compensation means of fiber optic component as claimed in claim 5, it is characterized in that, wherein an end of the laminated plates of this differently curved radian is fixed in the cover letter, the other end is suspended in this sleeve, this cover letter is sealed at both ends, to block the variation of ambient temperature, make the fiber grating bragg wavelength more stable.
7. the temperature compensation means of fiber optic component as claimed in claim 6, it is characterized in that, wherein this sleeve outer wall wraps up with heat insulation layer, the heat insulation layer outer wall also coats with mirror reflective layer, this sleeve inner vacuumizes, and passes on this temperature compensation means with the variation of blocking ambient temperature with radiation, conduction or convection current.
8. the temperature compensation means of fiber optic component as claimed in claim 7 is characterized in that, wherein this temperature compensation means is fixed in the unsettled end of this laminated plates with suitable counterweight, with the purpose that reaches temperature compensation simultaneously and adjust the fiber grating bragg wavelength.
9. the temperature compensation means of fiber optic component as claimed in claim 1 is characterized in that, wherein this treats that temperature compensating element is to paste at this continuous fiber to strengthen on the polymer composite laminated plates surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03266885 CN2646728Y (en) | 2003-07-08 | 2003-07-08 | Temperature compensation device for fiber optic component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03266885 CN2646728Y (en) | 2003-07-08 | 2003-07-08 | Temperature compensation device for fiber optic component |
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| Publication Number | Publication Date |
|---|---|
| CN2646728Y true CN2646728Y (en) | 2004-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03266885 Expired - Lifetime CN2646728Y (en) | 2003-07-08 | 2003-07-08 | Temperature compensation device for fiber optic component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768914A (en) * | 2020-06-19 | 2020-10-13 | 王保林 | Thermal shrinkage and cold expansion type self-on-off cable sheath |
-
2003
- 2003-07-08 CN CN 03266885 patent/CN2646728Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768914A (en) * | 2020-06-19 | 2020-10-13 | 王保林 | Thermal shrinkage and cold expansion type self-on-off cable sheath |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130708 Granted publication date: 20041006 |