CN100386598C - Readable force application component for stressed long-period fiber gratings - Google Patents
Readable force application component for stressed long-period fiber gratings Download PDFInfo
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- CN100386598C CN100386598C CNB2005100162628A CN200510016262A CN100386598C CN 100386598 C CN100386598 C CN 100386598C CN B2005100162628 A CNB2005100162628 A CN B2005100162628A CN 200510016262 A CN200510016262 A CN 200510016262A CN 100386598 C CN100386598 C CN 100386598C
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- force application
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- optical fiber
- guide plate
- contact lever
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Abstract
The present invention relates to a readable force application device, particularly to a device used for a transmission type filter, an optical fiber grating sensor, a mode converter, etc. in optical fiber communication for precisely measuring stress intensity. The present invention aims to realize the stability, the uniformity and the readability of force application when a stress long-period optical fiber grating, etc. is prepared and adjusted, and thereby, the spectral characteristic of the stress long-period optical fiber grating is adjusted. The device is composed of a reading device, a spring device, etc. The present invention has the technical scheme that the readable force application device comprises a reading device, a spring device, a guiding device and a supporting frame. The readable force application device is a rectangular box body, the force is applied to an optical fiber template through the spring device and a guiding plate, thereby, the refractivity of an optical fiber is periodically changed in the axial direction, and the optical fiber grating is formed. The present invention has the advantage that the force application of the device is stable, uniform and readable. The resonance peak intensity of the spectra transmitted by the optical fiber grating can be adjusted by external force.
Description
Technical field
The present invention relates to a kind of readable force application device, the size that can accurately measure stress that particularly relates to the mode transmission wave filter that is applied in the optical fiber communication, fiber-optic grating sensor, mode converter etc., the inhomogeneity fiber grating readable force application component of realizable force.
Background technology
Stressed long-period fiber gratings is acted on by external force and makes fiber core refractive index axially go up produce cyclical variation on the optical fiber and make, and can regulate grating resonance intensity by adjusting stress.Existing force application apparatus perhaps is difficult to accurately measure the size of stress, perhaps is difficult to the homogeneity of realizable force, and perhaps structure is too complicated, and afterburning stability is also relatively poor.
Summary of the invention
Purpose of the present invention: be implemented in preparation such as stressed long-period fiber gratings and regulate in afterburning stability, homogeneity and readability, and then the spectral characteristic of regulating stressed long-period fiber gratings.
This member is made up of reading device, spring assembly, guide piece and support four parts.By spring assembly and guide plate to the optical grating mold plate reinforcing, thereby make the refractive index of optical fiber produce periodically-varied in the axial direction, form fiber grating.By reading device can obtain afterburning size.
The technical scheme that the present invention is concrete: the novel readable force application component of this stressed long-period fiber gratings, it comprises reading device, spring assembly, leads with device, support; Reading device is made up of ball, contact lever, bar chi and sleeve; Spring assembly is made up of two piston bushs that are slidingly matched and spring; Guide piece is made up of abutment sleeve, guide plate, guiding slide bar; Support is made up of crossbeam, supporting walls, base, Rubber washer;
Its characteristics are: its profile is a rectangular box body, erect reading device 1 above, its contact lever 7 retractables, the contact lever top is a ball 6, the back is a bar chi 8, casing is inserted from the center of the crossbeam 14 of support 4 in the contact lever lower end, contacts with the guide plate 13 of guide piece 3 under the common afterburning situation; Guide piece comprises that two guide plates 13, three 15, three guiding slide bars of guiding slide bar are fixed on the support, and three abutment sleeves 12 are arranged on each guide plate, and guiding slide bar 15 penetrates from abutment sleeve 12 respectively, and guide plate is a sliding fit with leading between the slide bar; Spring assembly 2 is set between two guide plates, be piston bush 10 therebetween, in the middle of the piston bush is spring 11, below the guide plate of bottom is stressed object 5, it is optical fiber grating template with long stress cycle, stressed object down but the base of support, the objective table of force application component just, base is furnished with four Rubber washers 18; On two supporting walls 16 of support square hole 19 is arranged.
The beneficial effect that the present invention is concrete: this member is afterburning stable, evenly, and readable.During as force application mechanisms such as stressed long-period fiber gratings, the harmonic peak intensity of fiber grating transmission spectrum can be regulated by the size of external force.
Description of drawings
Fig. 1: force application component structural representation of the present invention
Fig. 2: the reading device synoptic diagram of force application component of the present invention
Fig. 3: the spring assembly synoptic diagram of force application component of the present invention
Fig. 4: the guide piece synoptic diagram of force application component of the present invention
Fig. 5: the support synoptic diagram of force application component of the present invention
Fig. 6: novel double-layer template performance test synoptic diagram.
Among the figure:
1. stressed object 6. balls of reading device 2. spring assemblies 3. guide pieces 4. supports 5. 7. contact levers 8. bar chis 9. sleeves 10. piston bushs 11. springs 12. abutment sleeves 13. guide plates 14. crossbeams 15. guiding slide bars 16. supporting walls 17. bases 18. Rubber washers 19. square holes 20. wideband light sources 21. single-mode fibers 22. spectroanalysis instruments 23. novel double-layer templates
Embodiment
Below in conjunction with accompanying drawing the present invention is further specified:
The novel readable force application component of this stressed long-period fiber gratings, it comprises reading device, spring assembly, guide piece, support; Reading device is made up of ball, contact lever, bar chi and sleeve; Spring assembly is made up of two piston bushs that are slidingly matched and spring; Guide piece is made up of abutment sleeve, guide plate; Support is made up of crossbeam, guiding slide bar, supporting walls, base, Rubber washer;
Its characteristics are: its profile is a rectangular box body, erect reading device 1 above, its contact lever 7 retractables, the contact lever top is a ball 6, the back is a bar chi 8, casing is inserted from the center of the crossbeam 14 of support 4 in the contact lever lower end, contact with the guide plate 13 of guide piece 3 under the common afterburning situation, three guiding slide bars 15 in the guide piece are fixed together with support, this part reaches three guiding slide bars that are fixed together with support by two guide plates and three abutment sleeves 12 and constitutes, between guide plate and the guiding slide bar is sliding fit, three abutment sleeves 9 are arranged on each guide plate, and 3 guiding slide bars 15 of support therefrom penetrate, and spring assembly 2 is set between two guide plates, being piston bush 10 therebetween, is spring 11 in the middle of the piston bush; Below a guide plate below be stressed object 5, top guide plate also can be used as operating platform, on put stressed object, it is the stressed object of the direct contact action of contact lever, below the stressed object base 17 of support, the base of force application component casing just, base is furnished with Rubber washer 18; On two supporting walls 16 of support square hole 19 is arranged; 4 Rubber washers are arranged below the base.
The measuring method of said readable force application component, its characteristics are: the sleeve of turn reading device, contact lever is flexible, act on by guide plate and to cause telescopic spring on the spring assembly, the stroke of Metallic rod equals the deformation quantity Δ h of spring, according to Hooke's law, the size of power F: F=k Δ h (k is the coefficient of stiffiness of spring) operates and measures the reinforcing of stressed object thereby finish.
The sleeve part of rotation reading device, the contact lever retractable.The contact lever top is a ball, contacts with guide plate under the common afterburning situation.
The spring deformation amount Δ h that spring assembly is read by reading device, according to Hooke's law, the size of power F: F=k Δ h, wherein, k is the coefficient of stiffiness of spring.Therefore, readability that can realizable force.
Guide piece has three abutment sleeves on each guide plate.This device guarantees the stability and the homogeneity of power in the process of reinforcing.
In the afterburner process (Fig. 1), the sleeve of turn reading device, Metallic rod is flexible, causes telescopic spring (elongation of Metallic rod equals the deformation quantity Δ h of spring) on the spring assembly by acting on the guide plate, thereby finishes afterburning operation.
Embodiment
Single-mode fiber 21 1 ends of drawing from force application component square hole 19 connect wideband light source 20, and the other end connects spectroanalysis instrument 22, place novel double-layer template 23 between the guide plate of force application component below and the base, and single-mode fiber passes between template, as stressed object.
Claims (2)
1. novel readable force application component of stressed long-period fiber gratings, it comprises reading device, spring assembly, guide piece, support; Reading device is made up of ball, contact lever, bar chi and sleeve; Spring assembly is made up of two piston bushs that are slidingly matched and spring; Guide piece is made up of abutment sleeve, guide plate, guiding slide bar; Support is made up of crossbeam, supporting walls, base, Rubber washer;
It is characterized in that: its profile is a rectangular box body, erect reading device (1) above, its contact lever (7) retractable, the contact lever top is ball (6), the back is bar chi (8), casing is inserted from the center of the crossbeam (14) of support (4) in the contact lever lower end, contacts with the guide plate (13) of guide piece (3) under the common afterburning situation; Guide piece comprises two guide plates (13), three guiding slide bars (15), three guiding slide bars are fixed on the support, three abutment sleeves (12) are arranged on each guide plate, and guiding slide bar (15) penetrates from abutment sleeve (12) respectively, is sliding fit between guide plate and the guiding slide bar; Spring assembly (2) is set between two guide plates, be piston bush (10) therebetween, in the middle of the piston bush is spring (11), below the guide plate of bottom is stressed object (5), it is optical fiber grating template with long stress cycle, below the stressed object base of support, the objective table of force application component just, base is furnished with four Rubber washers (18); On two supporting walls (16) of support square hole (19) is arranged; The guide plate on top also can be used as objective table, on the fine optical grating mold plate of giving out light, at this moment, the direct contact action optical grating mold plate of contact lever, the adjusting of the application point of realizable force.
2. according to the measuring method of the said readable force application component of claim 1, it is characterized in that: the sleeve of turn reading device, contact lever is flexible, act on by guide plate and to cause telescopic spring on the spring assembly, the stroke of contact lever equals the deformation quantity Δ h of spring, and according to Hooke's law, the size of power F: F=k Δ h wherein, k is the coefficient of stiffiness of spring, thereby finishes reinforcing operation and measurement to stressed object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100162628A CN100386598C (en) | 2005-03-04 | 2005-03-04 | Readable force application component for stressed long-period fiber gratings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100162628A CN100386598C (en) | 2005-03-04 | 2005-03-04 | Readable force application component for stressed long-period fiber gratings |
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| Publication Number | Publication Date |
|---|---|
| CN1654936A CN1654936A (en) | 2005-08-17 |
| CN100386598C true CN100386598C (en) | 2008-05-07 |
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| CNB2005100162628A Expired - Fee Related CN100386598C (en) | 2005-03-04 | 2005-03-04 | Readable force application component for stressed long-period fiber gratings |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383507C (en) * | 2006-06-02 | 2008-04-23 | 安里千 | Stress monitoring instrument |
| CN101793503B (en) * | 2010-03-26 | 2013-08-28 | 昆明理工大学 | Fiber Bragg rating measurement method for deformation of duckbill-type cross arm primary sheets |
| CN108036803A (en) * | 2017-11-29 | 2018-05-15 | 兰州大学 | A kind of bionical antenna device based on fiber grating |
| CN109632175A (en) * | 2018-12-19 | 2019-04-16 | 贵州天略信息技术有限公司 | A kind of number mudstone flow sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5889901A (en) * | 1997-06-06 | 1999-03-30 | University Technology Corporation | Strain measuring apparatus/method having a sensor and a reference optical fiber grating |
| CN1047662C (en) * | 1992-05-19 | 1999-12-22 | 外沙拉技术股份公司 | Opitical force transducer based on a fabry-perot resonator |
| JP2001241925A (en) * | 2000-02-29 | 2001-09-07 | Mitsubishi Heavy Ind Ltd | Method and system for detecting strain, using optical fiber |
| CN1384341A (en) * | 2002-06-14 | 2002-12-11 | 清华大学 | Optical-fiber grating sensor detecting pressure temperature simultaneously |
-
2005
- 2005-03-04 CN CNB2005100162628A patent/CN100386598C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047662C (en) * | 1992-05-19 | 1999-12-22 | 外沙拉技术股份公司 | Opitical force transducer based on a fabry-perot resonator |
| US5889901A (en) * | 1997-06-06 | 1999-03-30 | University Technology Corporation | Strain measuring apparatus/method having a sensor and a reference optical fiber grating |
| JP2001241925A (en) * | 2000-02-29 | 2001-09-07 | Mitsubishi Heavy Ind Ltd | Method and system for detecting strain, using optical fiber |
| CN1384341A (en) * | 2002-06-14 | 2002-12-11 | 清华大学 | Optical-fiber grating sensor detecting pressure temperature simultaneously |
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| CN1654936A (en) | 2005-08-17 |
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Granted publication date: 20080507 |