CN1547048A - Tunable Fabri-Paro cavity filter and preparation method thereof - Google Patents
Tunable Fabri-Paro cavity filter and preparation method thereof Download PDFInfo
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- CN1547048A CN1547048A CNA2003101115004A CN200310111500A CN1547048A CN 1547048 A CN1547048 A CN 1547048A CN A2003101115004 A CNA2003101115004 A CN A2003101115004A CN 200310111500 A CN200310111500 A CN 200310111500A CN 1547048 A CN1547048 A CN 1547048A
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- piezoelectric ceramic
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- ceramic tube
- loam cake
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Abstract
The invention is a kind of tunable Fabry-Perot cavity filter and the manufacturing method. The filter includes an input fiber, an output fiber, a cylinder shell out of the piezoelectric ceramic pipe, the upper and the subjacent ends of the cylinder shell has a upper cover and a subjacent cover, one end of the piezoelectric ceramic pipe is connected to the subjacent cover; another end and the upper cover are adhered with a piece of equal plating lens; the upper and the subjacent cover have a light out hole and a light-in hole, there sets a piece of collimating lends on the upper cover and the subjacent cover, the lens are at the holes. The collimate lends and the fibers are fixed, two pieces of parallel plating lens are pasted on the upper cover and the piezoelectric ceramic pipe; the piezoelectric ceramic pip is connected to the subjacent cover directly; the cylinder shell is fixed on the subjacent cover; the upper cover is fixed at the piezoelectric ceramic pipe tightly. The invention uses fiber collimator and high reverse lends plated lends to form a Fabry-Perot cavity, to replace the fiber end surface plating, reduces the difficulty and the cost.
Description
Technical field
The present invention relates to a kind of optical device, a kind of specifically tunable Fabry-Perot cavity wave filter and preparation method.
Technical background
In recent years, preparation technology reached its maturity along with fiber grating, was convenient to form large-scale production, and people become more deep and extensive to it in the research aspect the light sensing.Because fiber-optic grating sensor compact conformation, be easy to integrated and bury cover measurement, heat transfer agent is adopted the intrinsic Wavelength-encoding, avoid the interference of electromagnetic noise and light-intensity variation, and be convenient to utilize multiplexing (wavelength-division, time-division, the empty branch) technology to realize quasi-distributed multimetering, having a wide range of applications aspect the safety monitoring in fields such as civilian, aviation, boats and ships, electric power and oil multiple sensing amount (stress, temperature, high-intensity magnetic field etc.).Yet,, limited it and applied owing to Wavelength-encoding signal demodulation difficulty causes system cost too high.At present, the method and apparatus to the demodulation of wavelength signals volume has: matched fiber grating wave filter method, non-equilibrium Mach-Zehnder interferometer method, boundary filter method, tunable Fabry-Perot cavity method.Wherein, tunable Fabry-Perot cavity (FFPF) method adopts simple optical fiber, utilizes multiple-beam interference, has that the loss of insertion is little, sensitivity good, the efficiency of light energy utilization is high, simple operation and other advantages.But now used tunable Fabry-Perot cavity method is that optical fiber by two plated films on end face is inserted in the glass capillary and constitutes, because the optical fiber external diameter is 125 μ m, capillary diameter is 200 μ m, accomplish with optical fiber insert do not damage optical fiber plated film end face in the glass capillary and guarantee that its plated film end face aligns very difficult, and it is the fiber end face coating process is also very complicated, thereby its complex manufacturing technology, the cost height has limited its application.
Summary of the invention
Technical matters to be solved by this invention provide a kind of simple in structure, production technology is simple, cost is low, and the tunable Fabry-Perot cavity wave filter and the production method thereof of stable performance.
The technical scheme that the present invention solves its technical matters is: a kind of tunable Fabry-Perot cavity wave filter, comprise input optical fibre, output optical fibre, piezoelectric ceramic tube and be enclosed within the outer cylindrical housing of piezoelectric ceramic tube, the cylindrical housing upper and lower end has loam cake and lower cover respectively; Piezoelectric ceramic tube one end links to each other with lower cover, and its other end and loam cake inwall are pasted the plated film lens that a slice is parallel to each other respectively; Light hole and light well are arranged respectively on the upper and lower cover, on loam cake and following cover outer wall a slice collimation lens is housed respectively, collimation lens is positioned at light hole and light well position.
Preparation method of the present invention is: with collimation lens with go out incident optical and be separately fixed on the anchor clamps on cylindrical housing both sides by a small casing, guarantee the right alignment of two sections optical fiber; Two plated film lens that are parallel to each other are affixed on respectively on loam cake and the piezoelectric ceramic tube.; Piezoelectric ceramic tube is vertically connected on down covers, focal point hole involutory; Cylindrical housing is fastened on down by screw covers.; Loam cake is fastened on the piezoelectric ceramic tube by screw.
Principle of work of the present invention is: input optical fibre becomes equality light after by optical fiber collimator, and to enter the two parallel eyeglasses that are coated with high-reflecting film be Fabry-Perot-type cavity, and reflecting to form many interference of light therein back and forth, transmitted light is pooled in the output optical fibre by optical fiber collimator and exports behind Fabry-Perot cavity.Simultaneously, it is long tuning that the ceramic pipe that utilizes the stack of multilayer ring-type piezoelectric ceramics to form is attached to the laggard an actor's rendering of an operatic tune of plated film lens, to obtain the effect of wavelength tuning.
The present invention forms Fabry-Perot cavity with optical fiber collimator and by being coated with the high-reflecting film eyeglass, be substituted in the fiber end face plated film, manufacture craft difficulty and cost have been reduced, thereby production technology is simple, cost is low, apparatus of the present invention cost performance height of producing can be widely used in optical fiber sensing system.
Description of drawings
Fig. 1 is a structural representation of the present invention
Specific embodiments
As shown in the figure, a kind of tunable Fabry-Perot cavity wave filter, comprise input optical fibre 10, output optical fibre 1, ceramic pipe 6 and be enclosed within the outer cylindrical housing 5 of ceramic pipe, cylindrical housing 5 upper and lower ends have loam cake 4 and lower cover 7 respectively, and ceramic pipe 6 one ends link to each other with lower cover 7; Ceramic pipe 6 other ends and loam cake 4 inwalls are pasted the plated film lens 11,12 that a slice is parallel to each other respectively; Light hole 3 and light well 8 are arranged respectively on the upper and lower cover, on loam cake 4 and lower cover 7 outer walls a slice collimation lens 2,9 is housed respectively, collimation lens 2,9 lays respectively at light hole 3 and light well 8 positions.
Preparation method of the present invention is: with collimation lens 2,9 with go out incident optical and be separately fixed at by a small casing on the anchor clamps on drum shape shell 5 both sides, guarantee the right alignment of two sections optical fiber; Two plated film lens that are parallel to each other 11,12 are affixed on respectively on loam cake 4 and the piezoelectric ceramic tube 6; Piezoelectric ceramic tube 6 is vertically connected on the lower cover 7 focal point hole involutory; Drum shape shell 5 is fastened on the lower cover 7 by screw; Loam cake 4 is fastened on the piezoelectric ceramic tube 6 by screw.
Claims (2)
1, a kind of tunable Fabry-Perot cavity wave filter is characterized in that described wave filter comprises input optical fibre, output optical fibre, piezoelectric ceramic tube and is enclosed within the outer cylindrical housing of piezoelectric ceramic tube, and the cylindrical housing upper and lower end has loam cake and lower cover respectively; One end of piezoelectric ceramic tube links to each other with lower cover, and its other end and loam cake inwall are pasted the coequal plated film lens of a slice respectively; Light hole and light well are arranged respectively on the upper and lower cover, on loam cake and following cover outer wall a slice collimation lens is housed respectively, collimation lens is positioned at light hole and light well position.
2, the described tunable Fabry of a kind of production claim 1-Perot cavity filtered method is characterized in that: with collimation lens with go out incident optical and be separately fixed on the anchor clamps on cylindrical housing both sides by a small casing, guarantee the right alignment of two sections optical fiber; Two plated film lens that are parallel to each other are affixed on respectively on loam cake and the piezoelectric ceramic tube; Piezoelectric ceramic tube is vertically connected on down covers, focal point hole involutory; Cylindrical housing is fastened on down by screw covers; Loam cake is fastened on the piezoelectric ceramic tube by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101115004A CN1547048A (en) | 2003-12-03 | 2003-12-03 | Tunable Fabri-Paro cavity filter and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101115004A CN1547048A (en) | 2003-12-03 | 2003-12-03 | Tunable Fabri-Paro cavity filter and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1547048A true CN1547048A (en) | 2004-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2003101115004A Pending CN1547048A (en) | 2003-12-03 | 2003-12-03 | Tunable Fabri-Paro cavity filter and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101320110B (en) * | 2008-06-07 | 2011-04-06 | 厦门大学 | Tunable phase shift optical fiber Bragg optical grating |
| CN102075280A (en) * | 2010-12-11 | 2011-05-25 | 浙江工业大学 | Tunable Fabry-Perot cavity-based optical wavelength exchange device |
| CN107014410A (en) * | 2017-03-31 | 2017-08-04 | 西安交通大学 | The optical fiber alignment and the long control device and method of chamber made for optical fiber F P sensors |
| CN109557617A (en) * | 2018-12-25 | 2019-04-02 | 珠海光库科技股份有限公司 | Tunable filter |
| CN110308551A (en) * | 2019-08-02 | 2019-10-08 | 南京邮电大学 | A kind of optics of liquids phase converter that can be automatically controlled |
-
2003
- 2003-12-03 CN CNA2003101115004A patent/CN1547048A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101320110B (en) * | 2008-06-07 | 2011-04-06 | 厦门大学 | Tunable phase shift optical fiber Bragg optical grating |
| CN102075280A (en) * | 2010-12-11 | 2011-05-25 | 浙江工业大学 | Tunable Fabry-Perot cavity-based optical wavelength exchange device |
| CN107014410A (en) * | 2017-03-31 | 2017-08-04 | 西安交通大学 | The optical fiber alignment and the long control device and method of chamber made for optical fiber F P sensors |
| CN107014410B (en) * | 2017-03-31 | 2019-05-03 | 西安交通大学 | Optical fiber alignment and the long control device and method of chamber for fibre-optical F-P sensor production |
| 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 |
| CN110308551A (en) * | 2019-08-02 | 2019-10-08 | 南京邮电大学 | A kind of optics of liquids phase converter that can be automatically controlled |
| CN110308551B (en) * | 2019-08-02 | 2021-03-02 | 南京邮电大学 | Electrically controlled liquid optical phase modulator |
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