CN2559992Y - Tunable wavelength optical fibre grating filter - Google Patents
Tunable wavelength optical fibre grating filter Download PDFInfo
- Publication number
- CN2559992Y CN2559992Y CN 02218101 CN02218101U CN2559992Y CN 2559992 Y CN2559992 Y CN 2559992Y CN 02218101 CN02218101 CN 02218101 CN 02218101 U CN02218101 U CN 02218101U CN 2559992 Y CN2559992 Y CN 2559992Y
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- optical fiber
- fixed
- contact pins
- guide piece
- tailstock
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Abstract
The utility model relates to a wavelength tunable optical fiber grating filter. In view of the problems of traditional optical fiber grating compression method and device, the utility model provides a wavelength tunable optical fiber grating filter with low cost and convenient manufacture. The utility model comprises a pair of optical fiber base pins, a casing which has two ends separately inserted with the optical fiber base pins with a distance left between the two ends, grating and optical fiber which are inserted into the inner holes of the fiber base pins with the grating part arranged in the inner hole of the fiber base pin while the optical fiber fixed in the tailstock inner hole of the fiber base pin and the inner hole of the base pin, a support plate which is used for supporting every opponent of the filter, a fixed guide block which is fixedly provided with the casing and a tailstock in the through hole of the fixed guide block, a sliding guide block which can be glidingly arranged at the support plate and which has another tailstock fixed in the through hole of the sliding guide block, a driving device which provides tunable pressure to the sliding guide block and a restoring spring which provides restoring force to the sliding guide block.
Description
Technical field
The utility model relates to the optical device of using in a kind of optical-fibre communications, relates in particular to a kind of fiber grating filter that uses the compression fiber grating to realize tunable wave length.
Background technology
Usually, fiber grating is to form index modulation by Ultra-Violet Laser irradiates light core layer.When light wave passes through along optical fiber from fiber grating, the light of specific wavelength will be reflected, thereby realize filter action.Parameter when changing above-mentioned index modulation as refractive index and pitch length, then can realize the tunable wavelength filtering of fiber grating.
Morey et.al. has proposed the method and apparatus of utilization fiber grating compression first and has obtained the wavelength tuning range of wide about 45nm.Its tuner adopts crosswise fixed, therefore, all has higher requirements on machining precision and assembly precision.Fernald et.al. has provided and a kind of fiber grating has been fused to compression set on the kapillary, but it is manufactured with suitable difficulty.Jin et.al. has used the magnetic force mechanical tuning device, but its wavelength tuning range is little.The bicylindrical guide rail mechanism of two piezoelectric ceramics of A.Iocco et.al. utilization and special shape optical fiber contact pins has obtained the wavelength tuning range of 44.7nm, but its structure heaviness.S.Y.Set et.al. adopts curved tension and compression off-centre girder construction to obtain the wavelength tuning range of 40nm, but the produced with combination complex process of its girder construction, Long et.al. has then used similar structure, and its structural volume is bigger.In addition, the fiber grating filter product of some companies existing utilization thermal tuning, as Bragg, O/E Land etc., but its tuned speed is relatively slow.
Summary of the invention
In view of the deficiency of above-mentioned traditional tuner, the purpose of this utility model is: the tunable wave length fiber grating filter that a kind of cost is low and be easy to make is provided.
According to above-mentioned purpose, tunable wave length fiber grating filter of the present utility model comprises:
The a pair of optical fiber contact pins that has tailstock;
One sleeve pipe that matches with described optical fiber contact pins, described a pair of optical fiber contact pins is inserted into described sleeve pipe two ends respectively, leaves an intersegmental crack between described two optical fiber contact pins;
One has the optical fiber of grating, be interspersed in the endoporus of described two optical fiber contact pins, and the grating of described optical fiber partly is arranged in the endoporus of described two optical fiber contact pins, and described optical fiber is fixed in the tailstock endoporus and contact pin endoporus of described optical fiber contact pins;
One back up pad is used to support each parts of described wave filter;
Fixed guide piece with through hole is fixed on the described back up pad, and described sleeve pipe is fixed in the through hole of described fixed guide piece, and a tailstock in described two optical fiber contact pins is fixed in the through hole of described fixed guide piece;
Slide-and-guide piece with through hole is mounted slidably on described back up pad, and another tailstock in described two optical fiber contact pins is fixed in the through hole of described slide-and-guide piece;
Drive unit is fixed on the described back up pad, provides tuning pressure to described slide-and-guide piece; And
Returning spring is arranged between described fixed guide piece and the described slide-and-guide piece, provides restoring force to the slide-and-guide piece.
Aforesaid tunable wave length fiber grating filter also comprises:
The transition pushing block is fixed on the described slide-and-guide piece, and described drive unit provides described tuning pressure by described transition pushing block to described slide-and-guide piece.
Aforesaid tunable wave length fiber grating filter also comprises one or several sleeve pipes, connects by optical fiber contact pins between described a plurality of sleeve pipes.
Aforesaid tunable wave length fiber grating filter, described optical fiber is fixed in the tailstock endoporus and contact pin endoporus of described optical fiber contact pins by adhesive means.
Aforesaid tunable wave length fiber grating filter, a tailstock in described two optical fiber contact pins is fixed in the through hole of described fixed guide piece by the screw thread fixed block.
Aforesaid tunable wave length fiber grating filter, another tailstock in described two optical fiber contact pins is fixed in the through hole of described slide-and-guide piece by the screw thread fixed block.
Aforesaid tunable wave length fiber grating filter, the optical fiber contact pins of described magnetic tape trailer seat and the material of described sleeve pipe are pottery or metal or glass.
Aforesaid tunable wave length fiber grating filter, the tailstock of the optical fiber contact pins of described magnetic tape trailer seat can separate with optical fiber contact pins.
Aforesaid tunable wave length fiber grating filter, described drive unit are micrometer head or motor or Piezoelectric Ceramic device or fluid pressure drive device or actuating device of atmospheric pressure.
As mentioned above in the tunable wave length fiber grating filter of the present utility model of structure, adopted the existing joints of optical fibre ripe unit/parts in producing: i.e. the optical fiber contact pins of optical fiber contact pins or magnetic tape trailer seat and associated sleeve pipe design and produce out the fiber grating filter tuner of the tunable wave length of a kind of high coaxial precision and anti-rotation.Owing to adopted existing ripe parts, therefore, can reduce cost effectively, make things convenient for processing and fabricating.
Description of drawings
Describe embodiments of the invention in detail below in conjunction with accompanying drawing, in the accompanying drawing:
Fig. 1 is the structural representation of tunable wave length fiber grating filter of the present utility model;
Fig. 2 is the structural representation that has the contact pin of tailstock among Fig. 1;
Fig. 3 is the structural representation of Fig. 1 middle sleeve;
Fig. 4 is the wavelength tuning figure of tunable wave length fiber grating filter of the present utility model.
Embodiment
As shown in Figure 1, tunable wave length fiber grating filter of the present utility model mainly comprises: back up pad 1, fixed guide piece 2, have optical fiber 3, two optical fiber contact pins 4 and 8, sleeve pipe 6, slide-and-guide piece 7 and the drive unit 11 of grating.
Two optical fiber contact pins 4 and 8 adopt the optical fiber contact pins that has tailstock, and its structure is made up of two parts as shown in Figure 2: tailstock 2-1 and contact pin 2-2.Tailstock 2-1 and contact pin 2-2 can be on market buy as parts with the optical fiber contact pins 4 of magnetic tape trailer seat, can also buy respectively on market, by contact pin 2-2 and tailstock 2-1 being press-fitted or gluing fixing, are assembled into parts.Contact pin 2-2 shape can have multiple, as planar end, and ladder end face, sphere end face, inclined-plane end face etc.Tailstock 2-1 part can be processed voluntarily, and shape is not limited, but have at least two with axial vertical locating surface, the usefulness of confession axial restraint.
The structure of sleeve pipe 6 as shown in Figure 3, its structure and optical fiber contact pins 4 and 8 match.Optical fiber contact pins 4 and 8 and the material of sleeve pipe 6 can be pottery, glass or metal, as copper, steel, aluminium etc.
Return Fig. 1, two optical fiber contact pins 4 and 8 are inserted into sleeve pipe 6 two ends respectively, leave an intersegmental crack between two optical fiber contact pins 4 and 8, the contract usefulness of fiber grating of voltage supply.The optical fiber 3 that has grating is interspersed in the endoporus of two optical fiber contact pins 4 and 8, and makes the grating part 12 of optical fiber be arranged in the endoporus of two optical fiber contact pins 4 and 8, and optical fiber 3 is fixed in the tailstock endoporus and contact pin endoporus of optical fiber contact pins 4 and 8.Fixing means are adhesive means.
Fixed guide piece 2 has interior cylindrical hole, and sleeve pipe 6 is fixed in the through hole of fixed guide piece 2, and the tailstock of optical fiber contact pins 4 is fixed in the through hole of fixed guide piece 2.In the present embodiment, the tailstock of optical fiber contact pins 4 is fixed in the through hole of fixed guide piece 2 with the form that is threaded by a screw thread fixed block 5.
Slide-and-guide piece 7 also has an interior cylindrical hole, and the tailstock of optical fiber contact pins 8 is fixed in the through hole of slide-and-guide piece 7.In the present embodiment, the tailstock of fiber optic hub 8 is fixed in the through hole of slide-and-guide piece 7 in the mode that is threaded by a screw thread fixed block 9.Slide-and-guide piece 7 targeting parts are enclosed within on fixed guide piece 2 targeting parts.Fixed guide piece 2 is fixed on the back up pad 1, and slide-and-guide piece 7 is arranged on the back up pad 1 in mode in axial sliding.In the present embodiment, fixed guide piece 2 is fixed on the back up pad 1 by screw 14, but should be appreciated that other fixed form also can adopt, and for example, welds or is adhesively fixed etc.
Can reply when reducing, also comprise a returning spring 13 in this device, be arranged on the slide-and-guide piece 7, be used for providing restoring force to slide-and-guide piece 7 for the tuning pressure that slide-and-guide piece 7 is provided at drive unit 11.
The structure of above-described tunable wave length fiber grating filter of the present utility model, its whole tuning process is as follows:
The transition pushing block 10 on the slide-and-guide piece 7 is fixed in drive unit 11 pushings, the guiding inner cylinder face that drives on the slide-and-guide piece 7 slides on the guiding outside cylinder dignity on the fixed guide piece 2, and prevent to rotate kinking optical fiber by slide-and-guide piece 7 base plane, finish the compression guiding of class precision just.Simultaneously, the optical fiber contact pins 8 that is anchored on the slide-and-guide piece 7 is fixed in fiber grating 12 in tailstock and the contact pin endoporus along the sleeve pipe 6 high coaxial precision earth's axis to wherein two ends of compression, thereby realizes the fiber grating filter function of tunable wave length.Place spring 13 between fixed guide piece 2 and the slide-and-guide piece 7 to play the effect of reverse recovery tunable fiber grating.Make this device have pressure and draw two-way tuning function.When grating is longer, can uses two or more sleeve pipes, and add at least one contact pin betwixt.
Key improvements of the present utility model is:
1) realizes the optical fiber contact pins of axial restraint magnetic tape trailer seat by screwing the screw thread fixed block, and place the fiber grating two ends among the optical fiber contact pins to fix, thereby realized the convenience of fiber grating and effectively fixing by the tackifier of injection fibre contact pin tailstock and optical fiber contact pins endoporus sub-fraction.
2) cooperate anti-rotation compression slip with back up pad by the inside and outside cylinder surface cooperation slip of fixed guide piece and slide-and-guide piece and the anti-rotation plane of slide-and-guide piece with finishing first precision.
3) by the two optical fiber contact pins realization high precision compression-tuned fiber grating operation wavelength of in the sleeve pipe of the coaxial precision of same height, sliding.
4) the tunable wave length fiber grating filter realized of utilization the utility model, cost is low and be easy to make.
Fig. 4 is the wavelength tuning spectrogram of the tunable wave length fiber grating filter of utilization the utility model realization, wherein, the crest on the right is the wavelength tuning original state, middle crest is the wavelength tuning intermediateness, the crest on the left side is the wavelength tuning end-state, and the visible wavelength tuning range can reach more than the 35nm.
Claims (9)
1, a kind of tunable wave length fiber grating filter comprises:
The a pair of optical fiber contact pins that has tailstock;
One sleeve pipe that matches with described optical fiber contact pins, described a pair of optical fiber contact pins is inserted into described sleeve pipe two ends respectively, leaves an intersegmental crack between described two optical fiber contact pins;
One has the optical fiber of grating, be interspersed in the endoporus of described two optical fiber contact pins, and the grating of described optical fiber partly is arranged in the endoporus of described two optical fiber contact pins, and described optical fiber is fixed in the tailstock endoporus and contact pin endoporus of described optical fiber contact pins;
One back up pad is used to support each parts of described wave filter;
Fixed guide piece with through hole, on the fixing described back up pad, described sleeve pipe is fixed in the through hole of described fixed guide piece, and a tailstock in described two optical fiber contact pins is fixed in the through hole of described fixed guide piece;
Slide-and-guide piece with through hole is mounted slidably on described back up pad, and another tailstock in described two optical fiber contact pins is fixed in the through hole of described slide-and-guide piece;
Drive unit is fixed on the described back up pad, provides tuning pressure to described slide-and-guide piece; And
Returning spring is arranged between described fixed guide piece and the slide-and-guide piece, provides restoring force to the slide-and-guide piece.
2, tunable wave length fiber grating filter as claimed in claim 1 is characterized in that, also comprises:
The transition pushing block is fixed on the described slide-and-guide piece, and described drive unit provides described tuning pressure by described transition pushing block to described slide-and-guide piece.
3, tunable wave length fiber grating filter as claimed in claim 1 is characterized in that, also comprises one or several sleeve pipes, connects by optical fiber contact pins between described a plurality of sleeve pipes.
As claim 1 or 2 or 3 described tunable wave length fiber grating filters, it is characterized in that 4, described optical fiber is fixed in the tailstock endoporus and contact pin endoporus of described optical fiber contact pins by adhesive means.
As claim 1 or 2 or 3 described tunable wave length fiber grating filters, it is characterized in that 5, a tailstock in described two optical fiber contact pins is fixed in the through hole of described fixed guide piece by the screw thread fixed block.
6, as claim 1 or 2 or 3 described tunable wave length fiber grating filters, it is characterized in that another tailstock in described two optical fiber contact pins is fixed in the through hole of described slide-and-guide piece by the screw thread fixed block.
As claim 1 or 2 or 3 described tunable wave length fiber grating filters, it is characterized in that 7, the optical fiber contact pins of described magnetic tape trailer seat and the material of described sleeve pipe are pottery or metal or glass.
8, as claim 1 or 2 or 3 described tunable wave length fiber grating filters, it is characterized in that the tailstock of the optical fiber contact pins of described magnetic tape trailer seat can separate with optical fiber contact pins.
As claim 1 or 2 or 3 described tunable wave length fiber grating filters, it is characterized in that 9, described drive unit is micrometer head or motor or Piezoelectric Ceramic device or fluid pressure drive device or actuating device of atmospheric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02218101 CN2559992Y (en) | 2002-06-11 | 2002-06-11 | Tunable wavelength optical fibre grating filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02218101 CN2559992Y (en) | 2002-06-11 | 2002-06-11 | Tunable wavelength optical fibre grating filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2559992Y true CN2559992Y (en) | 2003-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02218101 Expired - Lifetime CN2559992Y (en) | 2002-06-11 | 2002-06-11 | Tunable wavelength optical fibre grating filter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1310051C (en) * | 2005-03-01 | 2007-04-11 | 暨南大学 | Controllable cascade type optical fiber raster DWDM single / multi-channel filter and its implementing method |
| CN102508358A (en) * | 2011-12-26 | 2012-06-20 | 中国科学院上海光学精密机械研究所 | Tunable narrow-band grating filter device and tuning method |
| CN107632389A (en) * | 2017-09-20 | 2018-01-26 | 濮阳光电产业技术研究院 | A kind of multi-wavelength fine setting meter based on fiber grating |
| CN109557617A (en) * | 2018-12-25 | 2019-04-02 | 珠海光库科技股份有限公司 | Tunable filter |
-
2002
- 2002-06-11 CN CN 02218101 patent/CN2559992Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1310051C (en) * | 2005-03-01 | 2007-04-11 | 暨南大学 | Controllable cascade type optical fiber raster DWDM single / multi-channel filter and its implementing method |
| CN102508358A (en) * | 2011-12-26 | 2012-06-20 | 中国科学院上海光学精密机械研究所 | Tunable narrow-band grating filter device and tuning method |
| CN107632389A (en) * | 2017-09-20 | 2018-01-26 | 濮阳光电产业技术研究院 | A kind of multi-wavelength fine setting meter based on fiber grating |
| CN107632389B (en) * | 2017-09-20 | 2024-01-19 | 濮阳光电产业技术研究院 | Multi-wavelength fine tuning meter based on fiber grating |
| CN109557617A (en) * | 2018-12-25 | 2019-04-02 | 珠海光库科技股份有限公司 | Tunable filter |
| CN109557617B (en) * | 2018-12-25 | 2021-07-16 | 珠海光库科技股份有限公司 | Tunable filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Designer after: Wei Chunlong Designer after: Yang Yifei Designer after: Cao Chungeng Designer after: Liu Xiaohui Designer before: Wei Chunlong Designer before: Huang Xiaojun |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: DESIGNER; FROM: WEI CHUNLONG HUANG XIAOJUN TO: WEI CHUNLONG YANG YIFEI CAO CHUNGENG LIU XIAOHUI |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120611 Granted publication date: 20030709 |