CN101349782B - Anti-temperature changing structure of optical fiber grating tuner - Google Patents
Anti-temperature changing structure of optical fiber grating tuner Download PDFInfo
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- CN101349782B CN101349782B CN200810117345XA CN200810117345A CN101349782B CN 101349782 B CN101349782 B CN 101349782B CN 200810117345X A CN200810117345X A CN 200810117345XA CN 200810117345 A CN200810117345 A CN 200810117345A CN 101349782 B CN101349782 B CN 101349782B
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Abstract
The invention discloses an optical fiber grating tuner temperature change resistance structure, which comprises a piezoelectric ceramic base, a piezoelectric ceramic, a press beam, screws, a temperature change resistance adjusting plate and a transverse compression plate, wherein the piezoelectric ceramic base is provided with the press beam whose bottom is provided with a slot, a containing spacebetween the piezoelectric ceramic base and the press beam is provided with the piezoelectric ceramic, one end of the temperature change resistance adjusting plate is provided in a notch at one side of the piezoelectric ceramic base, the transverse compression plate at two sides of the notch are pressed and fixed with the screws, the upper surface of the temperature change resistance adjusting plate and the upper surface of the piezoelectric ceramic are in one plane, the temperature change resistance adjusting plate has a plate structure made from the metal material whose thermal expansion coefficient is 13.4-39.5/10<-6>K<-1> and length is 8-24mm. The temperature change resistance structure has simple and easy application and good effect for resisting temperature change in the package of optical fiber gratings.
Description
Technical field
The present invention relates to the technology used in a kind of optical fiber grating tuner, relate in particular to a kind of anti-temperature changing structure that the packaged fiber grating is used in the optical fiber grating tuner that is used in.
Background technology
Fiber grating is a passive device important in optical fiber communication, Fibre Optical Sensor, the fiber laser.The key that adopts the fiber laser of optical fiber grating structure is as the frequency-selecting element with the distributed Blatt reflective fiber grating.During temperature variation, the pitch of fiber grating can produce the stretching phenomenon owing to the thermal elongation of anchor clamps, and the back pitch that stretches changes, and the fiber grating reflectance spectrum will change, and makes the output optical maser wavelength of fiber laser produce drift.Therefore, the control anchor clamps are to the stretching phenomenon of fiber grating, become the key issue that we need solve, the problem that the unresolved temperature resistance of the encapsulating structure of existing fiber grating becomes, so behind the packaged fiber grating, temperature variation often makes mounting structure flexible fail with its on the fiber grating that is provided with synchronous, thereby on fiber grating, applied extra stress, make the laser wavelength output of using optical fibre grating produce drift with variation of temperature.
Summary of the invention
Embodiment of the present invention provides a kind of anti-temperature changing structure of optical fiber grating tuner, by the mode of stress compensation, realizes that encapsulating structure and fiber grating change synchronously, can not apply extra-stress to fiber grating, reaches the temperature resistance change purpose behind the packaged fiber grating.
The objective of the invention is to be achieved through the following technical solutions:
Embodiment of the present invention provides a kind of anti-temperature changing structure of optical fiber grating tuner, and this anti-temperature changing structure comprises:
Piezoelectric ceramics seat, piezoelectric ceramics, pressure beam, screw, temperature resistance modify tone and put in order plate and horizontal pressing plate; Wherein, the piezoelectric ceramics seat is provided with the pressure beam, press the soffit to be provided with groove, in the accommodation space between piezoelectric ceramics seat and the pressure beam piezoelectric ceramics is set, whole plate one end of temperature resistance modified tone is arranged in the draw-in groove of piezoelectric ceramics seat one side, horizontal pressing plate by the draw-in groove both sides and screw fit are pushed down fixing, and the modify tone upper surface of whole plate of temperature resistance is in same plane with the upper surface of piezoelectric ceramics, and described temperature resistance modifies tone, and to put in order plate be that thermal expansivity is 13.4 * 10
-6K
-1～39.5 * 10
-6K
-1The length made of metal material at the platy structure of 8～24mm;
Described temperature resistance modifies tone and is equipped with the fiber grating mounting points on whole plate and the piezoelectric ceramics, described fiber grating mounting points determine to meet following relation: the overall expansion amount L of piezoelectric ceramics seat and piezoelectric ceramics
1λ
1+ L
4λ
4With the modify tone overall expansion amount L of whole plate and set grating fibers of temperature resistance
2λ
2+ L
3λ
3Equate, wherein, L
1For modifying tone, temperature resistance puts in order the distance of the point of fixity of plate on the piezoelectric ceramics seat to piezoelectric ceramics seat one end, L
2For modifying tone, temperature resistance puts in order the distance of the fiber grating mounting points of plate the point of fixity on the piezoelectric ceramics seat modifies tone whole plate to this temperature resistance on, L
3Be fiber grating mounting points on the whole plate of temperature resistance modified tone and the distance between the fiber grating mounting points on the piezoelectric ceramics, L
4Be the distance of the fiber grating mounting points on the piezoelectric ceramics to piezoelectric ceramics seat one end, λ
1Be the linear expansion coefficient of piezoelectric ceramics seat, λ
2For modifying tone, temperature resistance puts in order the linear expansion coefficient of plate, λ
3Be the linear expansion coefficient of grating fibers, λ
4Linear expansion coefficient for piezoelectric ceramics.
Described anti-temperature changing structure also comprises: trimming rack and fine setting screw mandrel; Trimming rack is fixed on the other end of the whole plate of described temperature resistance modified tone, and the through hole that the fine setting screw mandrel passes on the trimming rack is arranged on the trimming rack, and the front end and the piezoelectric ceramics seated connection of fine setting screw mandrel touch.
Described trimming rack is provided with holding screw, by the fastening fine setting screw mandrel that is arranged in the through hole of holding screw.
Described anti-temperature changing structure also comprises: base plate, described piezoelectric ceramics seat by screw retention on base plate.
Described piezoelectric ceramics seat is a slab construction, is provided with projection platform structure perpendicular to slab construction at an end of described slab construction, and projection platform structure is provided with places the modify tone draw-in groove of whole plate of temperature resistance.
Also be provided with cushion block below the described piezoelectric ceramics.
Described cushion block is the structure of " T " font, which is provided with the fixedly screw hole of usefulness.
Described pressure beam is provided with an arc groove for two structures perpendicular to the vertical rod formation of flat board are set at a dull and stereotyped end on the bottom surface of described flat board.
Also be provided with concave station on the bottom surface of the flat board of described pressure beam.
The technical scheme that is provided by the invention described above embodiment as can be seen, embodiment of the present invention cooperates by being in the whole plate of conplane temperature resistance modified tone, piezoelectric ceramics seat and piezoelectric ceramics, during the packaged fiber grating, can with the two ends of fiber grating respectively fixedly temperature resistance modify tone on whole plate and the piezoelectric ceramics to adopt thermal expansivity be 13.4 * 10 to whole plate because temperature resistance modifies tone
-6K
-1～39.5 * 10
-6K
-1The length made of metal material at the platy structure of 8～24mm, when temperature variation, the fiber grating of whole plate, piezoelectric ceramics seat and piezoelectric ceramics three's of temperature resistance modified tone Wen Bianyu encapsulation keeps synchronously, can not apply extra stress, realize that the temperature resistance of fiber grating encapsulating structure becomes fiber grating.Advantages such as that this anti-temperature changing structure has is simple in structure, temperature resistance becomes effective, and volume is little.
Description of drawings
Fig. 1 is the synoptic diagram of the anti-temperature changing structure of optical fiber grating tuner of the embodiment of the invention;
Fig. 2 is the whole plate structure synoptic diagram of temperature resistance modified tone of the embodiment of the invention;
Fig. 3 is the structural representation of the piezoelectric ceramics seat of the embodiment of the invention;
Fig. 4 is the structural representation of the pressure beam of the embodiment of the invention;
Fig. 5 is another structural representation of the pressure soffit of the embodiment of the invention;
Fig. 6 is the structural representation of the horizontal pressing plate of the embodiment of the invention;
Fig. 7 is the structural representation of the cushion block of the embodiment of the invention;
Fig. 8 is the principle schematic of the anti-temperature changing structure of the embodiment of the invention;
Each label is respectively among the figure: 1, piezoelectric ceramics seat; 2, piezoelectric ceramics; 3, press beam; 4, screw; 5, the whole plate of temperature resistance modified tone; 6, horizontal pressing plate; 7, trimming rack; 8, cushion block; 9, fine setting screw mandrel; 10, holding screw; 11, base plate; 21, slab construction; 22, projection platform structure; 23, draw-in groove; 31, flat board; 32, arc groove; 33, vertical rod; 34, concave station; 41, fixed orifice; 51, bolt hole; 71, pedestal; 72, gib screw; 73, temperature resistance modified tone integral basis plate; 74, fiber grating; 75, point of fixity one; 751, point of fixity two; 76, piezoelectric ceramics block.
Embodiment
Embodiment of the present invention is a kind of anti-temperature changing structure of optical fiber grating tuner, this anti-temperature changing structure is realized expanding synchronously by each parts of packaged fiber grating and fiber grating, on fiber grating, do not apply extra stress, the realization resisting temperature changes, and specifically comprises: piezoelectric ceramics seat, piezoelectric ceramics, pressure beam, screw, temperature resistance modify tone and put in order plate and horizontal pressing plate; Wherein, the piezoelectric ceramics seat is provided with the pressure beam, press the soffit to be provided with groove, in the accommodation space between piezoelectric ceramics seat and the pressure beam piezoelectric ceramics is set, whole plate one end of temperature resistance modified tone is arranged in the draw-in groove of piezoelectric ceramics seat one side, horizontal pressing plate by the draw-in groove both sides and screw fit are pushed down fixing, and the modify tone upper surface of whole plate of temperature resistance is in same plane with the upper surface of piezoelectric ceramics, and described temperature resistance modifies tone, and to put in order plate be that thermal expansivity is 13.4 * 10
-6K
-1～39.5 * 10
-6K
-1The length made of metal material at the platy structure of 8～24mm.This temperature resistance becomes encapsulating structure, have simple in structure, volume is little, temperature resistance becomes effective advantage.Simultaneously this structure provides the micro-adjusting mechanism and the debugging base plate of debugging grating fibers tension force, guarantee to be convenient to obtain need performance.
For ease of understanding, the invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment one
Present embodiment provides a kind of anti-temperature changing structure of optical fiber grating tuner, the encapsulating structure that can be used as fiber grating is used in the optical fiber grating tuner, this anti-temperature changing structure specifically comprises: piezoelectric ceramics seat 1, piezoelectric ceramics 2, screw 4, temperature resistance modifies tone and puts in order plate 5 and horizontal pressing plate 6, wherein, correspondence is provided with and presses beam 3 on the piezoelectric ceramics seat 1, press beam 3 bottom surfaces to be provided with the arc groove 32 of optical fibre grating, in the accommodation space that forms between piezoelectric ceramics seat 1 and the pressure beam 3 piezoelectric ceramics 2 is set, can be by the grating fibers of pasting at piezoelectric ceramics seat 1 upper surface, press beam 3 to be used to compress piezoelectric ceramics 2, the projection platform structure 22 of piezoelectric ceramics seat 1 one sides is provided with draw-in groove 23, one end of the whole plate 5 of temperature resistance modified tone is arranged in the draw-in groove 23, and push down fixing by the horizontal pressing plate 6 that screw is arranged on the piezoelectric ceramics seat 1 by the draw-in groove both sides, the upper surface of the whole plate 5 of temperature resistance modified tone and the upper surface place of piezoelectric ceramics 2 are at grade, be convenient to paste grating fibers, in the reality, because piezoelectric ceramics 2 insufficient heights of general finished product, a cushion block 8 can be set below piezoelectric ceramics 2, the modify tone upper surface of putting in order plate 5 of the upper surface that guarantees piezoelectric ceramics 2 and temperature resistance is in one flatly, also is convenient to the debugging of whole device.The whole plate 5 of temperature resistance modified tone is by thermal expansivity 13.4 * 10
-6K
-1～39.5 * 10
-6K
-1The length made of metal material at the platy structure of 8～24mm, generally can adopt aluminium or copper to be equipped with, its structure as shown in Figure 2.
In order to realize the convenient position of adjusting the whole plate 5 of temperature resistance modified tone, above-mentioned anti-temperature changing structure integral body is arranged on the base plate 11, promptly passing base plate 11 following screw holes with screw is fixed on piezoelectric ceramics seat 1 on the base plate 11, the other end at the whole plate 5 of temperature resistance modified tone is fixed a trimming rack 7, be provided with fine setting screw mandrel 9 in the through hole on the trimming rack 7, the front end of fine setting screw mandrel 9 directly withstands on the piezoelectric ceramics seat 1, like this, can realize adjusting the whole position of plate 5 in draw-in groove 23 of temperature resistance modified tone by adjusting fine setting screw mandrel 9, and because this setup, good stability can reach micron-sized adjustment is realized in the position of the whole plate 5 of temperature resistance modified tone.This structure is convenient to adjust the primary stress that is arranged on grating fibers on whole plate 5 of temperature resistance modified tone and the piezoelectric ceramics 2.
In above-mentioned anti-temperature changing structure, described piezoelectric ceramics seat 1 as shown in Figure 3, it is a slab construction 21, on it, be provided with the fixedly screw hole of usefulness, one end of described slab construction 21 is provided with the projection platform structure 22 perpendicular to slab construction, and projection platform structure 22 is provided with the draw-in groove 23 of placing horizontal pressing plate 5.
Described pressure beam 3 has two kinds of structures, and as shown in Figure 4, a kind of is slab construction, and described dull and stereotyped 31 bottom surface is provided with an arc groove 32, and an end of dull and stereotyped 31 is provided with two vertical rods 33 vertical with flat board.
Another kind of structure as shown in Figure 5, it is basic identical with preceding a kind of structure shown in Figure 4, just on pressure beam 3 is provided with the bottom surface of arc groove 32 concave station 34 is set, this concave station 34 can be used to be provided with the piezoelectric ceramics of box-shaped.
Be used in the above-mentioned anti-temperature changing structure to push down and fixedly the modify tone horizontal pressing plate 6 of whole plate 5 of temperature resistance be the tabular (see figure 6), which is provided with the fixed orifice 41 of mounting screw 4.
As shown in Figure 7, be arranged on described piezoelectric ceramics 2 following cushion blocks 8 in the above-mentioned anti-temperature changing structure and be the structure of " T " font, which is provided with two fixedly screw holes 51 of usefulness.
In the reality, anti-temperature changing structure of optical fiber grating tuner is by hexagon socket cap head screw piezoelectric ceramics seat 1 to be fixed on the base plate, on piezoelectric ceramics seat 1, be provided with and press beam 3, piezoelectric ceramics seat 1 and press and between the beam 3 piezoelectric ceramics 2 to be set, cushion block 8 is set below the piezoelectric ceramics 2, cushion block 8 is fixed on the piezoelectric ceramics seat 1 by the hexagonal fillister head screw, cushion block 8 and piezoelectric ceramics 2 are installed in the accommodation space of piezoelectric ceramics seat 1 and 3 formation of pressure beam, on the projection platform structure 22 of piezoelectric ceramics seat 1, be provided with draw-in groove 23, whole plate 5 one ends of temperature resistance modified tone are arranged in the draw-in groove 23, two horizontal pressing plates 6 are fixed on by the hexagonal fillister head screw on the projection platform structure 22 of piezoelectric ceramics seat 1 of draw-in groove 23 both sides, two horizontal pressing plates are pushed down the whole plate 5 of temperature resistance modified tone simultaneously, a trimming rack 7 is installed on the other end of the whole plate 5 of temperature resistance modified tone by screw retention, trimming rack 7 is provided with the through hole that fine setting screw mandrel 9 is installed, be provided with the holding screw 10 that installs and fixes fine setting screw mandrel 9 with this through hole correspondence position, after fine setting screw mandrel 9 is installed in the trimming rack 7, the through hole that its front end passes trimming rack 7 withstands on the piezoelectric ceramics seat 1, can fix fine setting screw mandrel 9 by adjusting holding screw 10.In the actual installation, used screw all can adopt hexagon socket cap head screw, and this screw is installed, dismounting is all very convenient, and can reach good fastening effect.Wherein, the base plate 11 of setting, trimming rack 7 and fine setting screw mandrel 9 all are positions of adjusting the whole plate 5 of temperature resistance modified tone for convenient.
The principle of above-mentioned anti-temperature changing structure as shown in Figure 8, cooperate with the temperature resistance modified tone integral basis plate 73 of opposite side by the piezoelectric ceramics block 76 that is arranged on the pedestal 71 during use, fiber grating 74 is separately fixed on temperature resistance modified tone integral basis plate 73 and the piezoelectric ceramics block 76 by point of fixity 1 and point of fixity 2 751, by under different temperatures, selection puts one 75 and point of fixity 2 751 (can utilize the mode fixed fiber grating 74 of a glue) to the different fixing of fiber grating 74, when being implemented in temperature variation, to the stress compensation of fiber grating.Described when fiber grating 74 is installed on temperature resistance modified tone integral basis plate 73 and piezoelectric ceramics block 76, point of fixity (point of fixity 1 and point of fixity 2 751) provisioning request really meets following relation: the overall expansion amount L of pedestal 71 and piezoelectric ceramics block 76
1λ
1+ L
4λ
4Overall expansion amount L with temperature resistance modified tone integral basis plate 73 and grating fibers 74
2λ
2+ L
3λ
3Equate, i.e. L
1λ
1+ L
4λ
4=L
2λ
2+ L
3λ
3, wherein, L
1Be the mid point of temperature resistance modified tone integral basis plate 73 distance, L to pedestal 71 other ends (near an end of piezoelectric ceramics block)
2For the temperature resistance modified tone integral basis plate 73 and the point of fixity 72 of pedestal 71 are adjusted the distance of the point of fixity 1 of the fiber grating 74 on the substrate 73, L to this
3Be the distance between the point of fixity 2 751 of the point of fixity 1 of the fiber grating 74 on the temperature resistance modified tone integral basis plate 73 and the fiber grating 74 on the piezoelectric ceramics block 76, L
4Be the distance of the fiber grating point of fixity on the piezoelectric ceramics block 76 2 751 to pedestal 71 other ends, λ
1Be the linear expansion coefficient of pedestal 71, λ
2Be the linear expansion coefficient of temperature resistance modified tone integral basis plate 73, λ
3Be the linear expansion coefficient of grating fibers 74, λ
4Linear expansion coefficient for piezoelectric ceramics block 76.
Correspond in the anti-temperature changing structure of present embodiment, when on described temperature resistance modifies tone whole plate 5 and piezoelectric ceramics 2 fiber grating being installed, mounting points rule really will meet above-mentioned relation: i.e. the overall expansion amount L of piezoelectric ceramics seat 1 and piezoelectric ceramics 2
1λ
1+ L
4λ
4Overall expansion amount L with whole plate 5 of temperature resistance modified tone and grating fibers
2λ
2+ L
3λ
3Equate, i.e. L
1λ
1+ L
4λ
4=L
2λ
2+ L
3λ
3, wherein, L
1For modifying tone, temperature resistance puts in order the distance of the point of fixity of plate 5 on piezoelectric ceramics seat 1 to piezoelectric ceramics seat 1 other end, L
2Be the modify tone distance of the fiber grating mounting points of whole plate 5 the point of fixity of piezoelectric ceramics seat 1 modifies tone whole plate 5 to this temperature resistance on of temperature resistance, L
3Be fiber grating mounting points on the whole plate 5 of temperature resistance modified tone and the distance between the fiber grating mounting points on the piezoelectric ceramics 2, L
4Be the distance of the fiber grating mounting points on the piezoelectric ceramics 2 to piezoelectric ceramics seat 1 other end, λ
1Be the linear expansion coefficient of piezoelectric ceramics seat 1, λ
2For modifying tone, temperature resistance puts in order the linear expansion coefficient of plate 5, λ
3Be the linear expansion coefficient of grating fibers, λ
4Linear expansion coefficient for piezoelectric ceramics 2.In the reality, piezoelectric ceramics seat 1 general low-expansion coefficient, the stable alloy of expansion coefficient of adopting made, as iron-nickel alloys such as 4J36,4J32, the linear expansion coefficient and the quartz glass of grating fibers are close, also smaller, the linear expansion coefficient of piezoelectric ceramics 2 and quartz glass are also close, and be also smaller, so select for use the metals such as aluminium, copper of high linear expansion coefficient to compensate L
2Can lessly just can realize compensation, satisfy the little requirement of volume.Have the opposing exterior temperature change and the constant characteristics of the primary stress of grating fibers owing to realized temperature compensation, this structure, thereby realize that temperature resistance becomes.
In sum, anti-temperature changing structure in the embodiment of the invention, make fiber grating encapsulating structure simple in structure, that volume is little by the different material of temperature expansion system, after having guaranteed the packaged fiber grating, when temperature variation, can on fiber grating, not apply extra stress, realize the fiber grating encapsulating structure that temperature resistance becomes because of the variation of encapsulating structure.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (9)
1. an anti-temperature changing structure of optical fiber grating tuner is characterized in that, this anti-temperature changing structure comprises:
Piezoelectric ceramics seat (1), piezoelectric ceramics (2), pressure beam (3), screw (4), temperature resistance modify tone and put in order plate (5) and horizontal pressing plate (6); Wherein, piezoelectric ceramics seat (1) is provided with presses beam (3), press beam (3) bottom surface to be provided with groove, in the accommodation space between piezoelectric ceramics seat (1) and the pressure beam (3) piezoelectric ceramics (2) is set, whole plate (5) one ends of temperature resistance modified tone are arranged in the draw-in groove (23) of piezoelectric ceramics seat (1) one side, horizontal pressing plate (6) by draw-in groove (23) both sides cooperate with screw (4) push down fixing, the upper surface of the whole plate (5) of temperature resistance modified tone and the upper surface of piezoelectric ceramics (2) are in same plane, and the whole plate (5) of described temperature resistance modified tone is that thermal expansivity is 13.4 * 10
-6K
-1～39.5 * 10
-6K
-1The length made of metal material at the platy structure of 8～24mm;
Described temperature resistance modifies tone and is equipped with the fiber grating mounting points on whole plate (5) and the piezoelectric ceramics (2), described fiber grating mounting points determine to meet following relation: the overall expansion amount L of piezoelectric ceramics seat (1) and piezoelectric ceramics (2)
1λ
1+ L
4λ
4With the modify tone overall expansion amount L of whole plate (5) and set grating fibers of temperature resistance
2λ
2+ L
3λ
3Equate, wherein, L
1For modifying tone, temperature resistance puts in order the distance of the point of fixity of plate (5) on piezoelectric ceramics seat (1) to piezoelectric ceramics seat (1) one end, L
2For modifying tone, temperature resistance puts in order the distance of the fiber grating mounting points of plate (5) the point of fixity on the piezoelectric ceramics seat (1) modifies tone whole plate (5) to this temperature resistance on, L
3Be fiber grating mounting points on the whole plate (5) of temperature resistance modified tone and the distance between the fiber grating mounting points on the piezoelectric ceramics (2), L
4Be the distance of the fiber grating mounting points on the piezoelectric ceramics (2) to piezoelectric ceramics seat (1) one end, λ
1Be the linear expansion coefficient of piezoelectric ceramics seat (1), λ
2For modifying tone, temperature resistance puts in order the linear expansion coefficient of plate (5), λ
3Be the linear expansion coefficient of grating fibers, λ
4Linear expansion coefficient for piezoelectric ceramics (2).
2. anti-temperature changing structure according to claim 1 is characterized in that, described anti-temperature changing structure also comprises: trimming rack (7) and fine setting screw mandrel (9); Trimming rack (7) is fixed on the other end of the whole plate (5) of described temperature resistance modified tone, and the through hole that fine setting screw mandrel (9) passes on the trimming rack (7) is arranged on the trimming rack (7), and the front end of fine setting screw mandrel (9) contacts with piezoelectric ceramics seat (1).
3. anti-temperature changing structure according to claim 2 is characterized in that, described trimming rack (7) is provided with holding screw (10), by the fastening fine setting screw mandrel (9) that is arranged in the through hole of holding screw (10).
4. anti-temperature changing structure according to claim 1 is characterized in that, described anti-temperature changing structure also comprises: base plate (11), described piezoelectric ceramics seat (1) by screw retention on base plate (11).
5. anti-temperature changing structure according to claim 1, it is characterized in that, described piezoelectric ceramics seat (1) is slab construction (21), be provided with projection platform structure (22) perpendicular to slab construction (21) at an end of described slab construction (21), projection platform structure (22) is provided with places the modify tone draw-in groove (23) of whole plate (5) of temperature resistance.
6. anti-temperature changing structure according to claim 1 is characterized in that, also is provided with cushion block (8) below the described piezoelectric ceramics (2).
7. anti-temperature changing structure according to claim 6 is characterized in that, described cushion block (8) is the structure of " T " font, which is provided with the fixedly screw hole of usefulness (51).
8. anti-temperature changing structure according to claim 1, it is characterized in that, described pressure beam (3) is pressed the arc groove (32) of groove for being provided with that is provided with on the beam for two structures perpendicular to vertical rod (33) formation of dull and stereotyped (31) are set at dull and stereotyped (31) one ends on the bottom surface of described flat board (31).
9. anti-temperature changing structure according to claim 8 is characterized in that, also is provided with concave station (34) on the bottom surface of the flat board (31) of described pressure beam (3).
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6101301A (en) * | 1998-04-17 | 2000-08-08 | Lucent Technologies Inc. | Temperature-compensated optical fiber gratings with fine wavelength tuning |
| US6175674B1 (en) * | 1999-03-08 | 2001-01-16 | Uconn Technology Inc. | Adjustable compensation device for fiber bragg gratings |
| US6243527B1 (en) * | 1998-01-16 | 2001-06-05 | Corning Incorporated | Athermalization techniques for fiber gratings and temperature sensitive components |
| CN2665685Y (en) * | 2003-09-26 | 2004-12-22 | 刘育梁 | Sensitivity increasing structure of optical fiber raster temperature sensor |
-
2008
- 2008-07-29 CN CN200810117345XA patent/CN101349782B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6243527B1 (en) * | 1998-01-16 | 2001-06-05 | Corning Incorporated | Athermalization techniques for fiber gratings and temperature sensitive components |
| US6101301A (en) * | 1998-04-17 | 2000-08-08 | Lucent Technologies Inc. | Temperature-compensated optical fiber gratings with fine wavelength tuning |
| US6175674B1 (en) * | 1999-03-08 | 2001-01-16 | Uconn Technology Inc. | Adjustable compensation device for fiber bragg gratings |
| CN2665685Y (en) * | 2003-09-26 | 2004-12-22 | 刘育梁 | Sensitivity increasing structure of optical fiber raster temperature sensor |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2005-115192A 2005.04.28 |
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