CN102109674A - Optical fiber tunable filter and fabrication method thereof - Google Patents
Optical fiber tunable filter and fabrication method thereof Download PDFInfo
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- CN102109674A CN102109674A CN 201110093686 CN201110093686A CN102109674A CN 102109674 A CN102109674 A CN 102109674A CN 201110093686 CN201110093686 CN 201110093686 CN 201110093686 A CN201110093686 A CN 201110093686A CN 102109674 A CN102109674 A CN 102109674A
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Abstract
The invention discloses an optical fiber tunable filter and a fabrication method thereof. The optical fiber tunable filter comprises two concentric metal blocks, wherein, one of the metal blocks is bonded on a base. The optical fiber tunable filter is characterized in that piezoelectric ceramic (PZT) is bonded between the metal blocks; a glass tube or a metal tube is inserted into through holes of the metal blocks; an optical fiber head the end face of which is provided with a reflective film is inserted between the metal blocks. The optical fiber tunable filter disclosed by the invention has the advantages of good wide temperature performance, less insertion loss and the like. The invention further discloses the fabrication method of the optical fiber tunable filter; and by means of the method, large-scale quantity production and integrated production of the optical fiber tunable filter are easily realized.
Description
Technical field
The present invention relates to optical communication field, particularly relate to a kind of optical-fibre adjustable wave filter and preparation method thereof.
Background technology
Development along with optical fiber communication, network is developed in depth and breadth to Metropolitan Area Network (MAN) from arterial grid, Metropolitan Area Network (MAN) need transmit a large amount of images and data, tunable optic filter has been taken on important task therein, tunable optic filter can be applicable to the wavelength-division multiplex demultiplexing, constitutes Optical Add Drop Multiplexer (OADM) the optical monitoring device of reconstruct; And can be applicable in tuning transmitter, the receiver, carry out spontaneous radiation (ASE) and suppress; Also can be used for making the photoswitch of high " on-off ratio ".
The optical-fibre adjustable wave filter has that volume is little, integrated level is high, high s/n ratio, resolution height, Insertion Loss are low, and being easy to has the good effect that is connected with existing optic communication device, is widely used in optical communication field, subjects such as nonlinear optics.The optical fiber filter that uses can be divided into based on fiber grating Mach-Zehnder interferometer, arrayed-waveguide grating, F-P chamber (Fabry-Bai Luo chamber) type at present.Need mask based on fiber grating filter, the support of supplementary technologies such as temperature control makes cost increase, and complicated technology realization is to Polarization-Sensitive.Based on the wave filter of Mach-Zehnder principle of interference, be difficult to accurately control wavelength, and the logical top of band unevenness.Based on the wave filter of arrayed-waveguide grating, bandwidth is narrower, complex manufacturing technology.What research was maximum at present is F-P cavity type tunable wave filter.This wave filter comes the passband of accurate tuned filter by the rapid movement of the minute surface in F-P chamber.F-P cavity type tunable wave filter also has bigger Free Spectral Range, the wavelength regulation scope of broad, precision height, advantages such as narrow bandwidth.
Summary of the invention
The object of the present invention is to provide optical-fibre adjustable wave filter that a kind of wide warm nature energy is good, Insertion Loss is little and preparation method thereof, reach the purpose that is easy to large-scale volume production and integrated production.
For achieving the above object, technical scheme proposed by the invention is: a kind of optical-fibre adjustable wave filter, comprise two concentric derbies, wherein a slice derby is bonded in the substrate, it is characterized in that, be bonded with piezoelectric ceramics (PZT) between the described derby, and be penetrated with glass tube or metal tube on the derby through hole, be inserted with the optical fiber head of end face band reflectance coating between described derby.
Further, the method for making of described optical-fibre adjustable wave filter is: comprise the steps:
Step 1: make two derbies with concentric circle holes;
Step 2: lead to piezoelectric ceramics (PZT) on the adhesives therein on the derby;
Step 3: on above-mentioned derby circular hole, plug glass tube or the metal tube isometrical with circular hole;
Step 4: with other a slice derby by adhesives on piezoelectric ceramics (PZT);
Step 5: last, a slice derby is bonded in the substrate therein, and goes into optical fiber head at glass tube or metal tube interpolation, and solidifies, and gets the optical-fibre adjustable wave filter.
Further, two concentric derby methods of the described generation of step 1 have:
Method one: adopt two derbies to lock mutually, use again with kapillary equal diameter drill bit and reamer and drill two derbies simultaneously with screw.
Method two: adopt a derby, use with kapillary equal diameter drill bit and reamer again and drill derby, line cuts into two concentric derbies again.
Further, the described piezoelectric ceramics of step 2 (PZT) is an annular or square, as is annular, and then piezoelectric ceramics (PZT) is concentric with derby, as is square, and then piezoelectric ceramics (PZT) is symmetrically distributed on derby.
Further, the described bonding agent of step 2 and step 4 is for the material of positive expansion coefficient, as epoxy glue.
Further, the described fiber end face of step 5 plates multilayer dielectric reflective coating, and described optical fiber head can be plane or concave surface.
Description of drawings
Fig. 1 is the basic block diagram of optical-fibre adjustable wave filter of the present invention;
Fig. 2 is two concentric derby method 1 synoptic diagram of generation of the present invention;
Fig. 3 is two concentric derby method 2 synoptic diagram of generation of the present invention;
Fig. 4 is a piezoelectric ceramics adhesive method synoptic diagram of the present invention;
Fig. 5 is the synoptic diagram after piezoelectric ceramics of the present invention and derby assemble.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Shown in the basic block diagram that Fig. 1 is optical-fibre adjustable wave filter of the present invention, a kind of optical-fibre adjustable wave filter, comprise two concentric derbies 101,102, wherein derby 101 is bonded on the base 103, be bonded with piezoelectric ceramics 105 between the derby 101,102, and the concentric pylone in 101,102 of the derbies, be penetrated with glass tube or metal tube 106, at the optical fiber head 104 of glass tube or metal tube 106 end face band reflectance coatings, both got the optical-fibre adjustable wave filter.
Further, the method for making of described optical-fibre adjustable wave filter is: comprise the steps:
Making has two derbies of concentric circle holes; Producing two concentric derby methods has:
Method one: as shown in Figure 2, two derbies 203,204 are by screw 201,202, shown in locked, the interval of two-screw 201,202 equates with the interval of screw to derby, use with kapillary equal diameter drill bit and reamer 205 in two-screw 203,204 position intermediate again and drill two derbies simultaneously, make derby 203,204 produce two concentric circle holes 206,207;
Method two: as shown in Figure 3, derby 201 usefulness drill with kapillary equal diameter drill bit and reamer 302, in derby 201, produce a circular hole, obtain two concentric derbies 303,305 with the wire cutting machine cutting along 306 cuttings again, make derby 303,305 produce two concentric circle holes 304,307.If derby is bigger, then can cut out a plurality of concentric derbies, this scheme is made simpler than a last scheme, and efficient is higher.
Lead to piezoelectric ceramics (PZT) on the adhesives therein on the derby: bonding agent is the material of positive expansion coefficient, as epoxy glue.The shape of piezoelectric ceramics generally have the annular also have square, the adhering method of ring-shaped P ZT shown in Fig. 3 (1), piezoelectric ceramics 402 and derby 401 concentric 403.The bonding method of square piezoelectric ceramics is shown in Fig. 3 (2), and 4 piezoelectric ceramics 404 are symmetrically distributed on derby 301.
On above-mentioned derby circular hole, plug glass tube or the metal tube isometrical with circular hole; With other a slice derby by adhesives on piezoelectric ceramics (PZT): as shown in Figure 4, after piezoelectric ceramics bonds, insert and isometrical glass tube or the metal tube 504 of kapillary again, another derby 502 is placed on the piezoelectric ceramics (PZT) 503, and pass glass tube or metal tube 504, guarantee two derbies, 501,502 concentric co-axial.Piezoelectric ceramics (PZT) 503 and derby are bonding by 501,502 epoxy glues, the influence that the negative thermal expansion coefficient that the thickness of control glue can fine compensation piezoelectric ceramics (PZT) 503 brings.
At last, a slice derby is bonded in the substrate therein, and goes into optical fiber head at glass tube or metal tube interpolation, optical fiber head can be plane or concave surface, and solidify, like this with optical fiber as the F-P reflecting surface, PZT drives and changes the long tunable optic filter in chamber and just completed.
The present invention utilizes existing vacuum coating technology to plate multilayer dielectric reflective coating at fiber end face, constitutes the Minitype F-P chamber by fiber end face, and the adjusting in chamber is finished by piezoelectric ceramics (PZT).The vacuum coating technology maturation, optical parametric excellence, stable performance; The micro positioner linearity is good, and hysteresis is little, and response speed is fast, and stable performance is easy to control, and piezoelectric effect is to utilize the electric polarization effect of stupalith, and no current does not generate heat, and does not almost have power consumption.Because the thermal expansivity of piezoelectric ceramics (PZT) is born, so the temperature performance that will obtain, the present invention adopts the epoxy glue of positive thermal expansivity, can reduce the frequency drift of F-P chamber with temperature greatly by the thickness of controlling epoxy glue.
The present invention proposes the optical-fibre adjustable Filter Structures, is easy to large-scale volume production and integrated production, and wide warm nature energy is good, Insertion Loss is little.
Although specifically show and introduced the present invention in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in the spirit and scope of the present invention that do not break away from appended claims and limited; in the form and details the present invention is made various variations, be protection scope of the present invention.
Claims (10)
1. optical-fibre adjustable wave filter, comprise two concentric derbies, wherein a slice derby is bonded in the substrate, it is characterized in that, be bonded with piezoelectric ceramics between the described derby, and implemented glass tube or metal tube on the derby through hole, be inserted with the optical fiber head of end face band reflectance coating between described derby.
2. the method for making of an optical-fibre adjustable wave filter is characterized in that, comprises the steps:
Step 1: make two derbies with concentric circle holes;
Step 2: therein on derby by piezoelectric ceramics on the adhesives;
Step 3: on above-mentioned concentric derby circular hole, plug glass tube or the metal tube isometrical with circular hole;
Step 4: with other a slice derby by adhesives on piezoelectric ceramics;
Step 5: last, a slice derby is bonded in the substrate therein, and goes into optical fiber head at glass tube or metal tube interpolation, and solidifies, and gets the humorous wave filter of optical-fibre adjustable.
3. the method for making of a kind of optical-fibre adjustable wave filter according to claim 2, it is characterized in that, producing two concentric derby methods is: adopt two derbies to lock mutually with screw, use with kapillary equal diameter drill bit and reamer again and drill two derbies simultaneously.
4. the method for making of a kind of optical-fibre adjustable wave filter according to claim 2, it is characterized in that, producing two concentric derby methods is: adopt a derby, use with kapillary equal diameter drill bit and reamer again and drill derby, line cuts into two concentric derbies again.
5. the method for making of a kind of optical-fibre adjustable wave filter according to claim 2 is characterized in that, the described piezoelectric ceramics of step 2 is an annular, and piezoelectric ceramics is concentric with derby.
6. the method for making of a kind of optical-fibre adjustable wave filter according to claim 2 is characterized in that, the described piezoelectric ceramics of step 2 is that square piezoelectric ceramics is symmetrically distributed on derby.
7. the method for making of a kind of optical-fibre adjustable wave filter according to claim 2 is characterized in that, the material that the described bonding agent of step 2 and step 4 is positive expansion coefficient.
8. the method for making of a kind of optical-fibre adjustable wave filter according to claim 7 is characterized in that, the material of described positive expansion coefficient is an epoxy glue.
9. the method for making of a kind of optical-fibre adjustable wave filter according to claim 2 is characterized in that, the described fiber end face of step 5 plates multilayer dielectric reflective coating.
10. the method for making of a kind of optical-fibre adjustable wave filter according to claim 2 is characterized in that, described optical fiber head can be plane or concave surface.
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| CN 201110093686 CN102109674A (en) | 2011-04-14 | 2011-04-14 | Optical fiber tunable filter and fabrication method thereof |
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| CN 201110093686 CN102109674A (en) | 2011-04-14 | 2011-04-14 | Optical fiber tunable filter and fabrication method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698585A (en) * | 2015-04-01 | 2015-06-10 | 武汉理工大学 | Adjustable optical fiber f-p filter |
| CN104767011A (en) * | 2015-04-13 | 2015-07-08 | 西北工业大学 | Temperature-tunable bandstop filter based on conductive rubber material |
| CN109557617A (en) * | 2018-12-25 | 2019-04-02 | 珠海光库科技股份有限公司 | Tunable filter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2768320B2 (en) * | 1995-09-04 | 1998-06-25 | 日本電気株式会社 | Tunable optical filter |
| US7255487B1 (en) * | 2006-10-24 | 2007-08-14 | Choi Youngmin A | Simple fiber optic packaged filter |
| CN101576636A (en) * | 2008-05-09 | 2009-11-11 | 中国科学院半导体研究所 | Tunable fiber F-P cavity filter |
-
2011
- 2011-04-14 CN CN 201110093686 patent/CN102109674A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2768320B2 (en) * | 1995-09-04 | 1998-06-25 | 日本電気株式会社 | Tunable optical filter |
| US7255487B1 (en) * | 2006-10-24 | 2007-08-14 | Choi Youngmin A | Simple fiber optic packaged filter |
| CN101576636A (en) * | 2008-05-09 | 2009-11-11 | 中国科学院半导体研究所 | Tunable fiber F-P cavity filter |
Non-Patent Citations (2)
| Title |
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| 《光通信技术》 19891231 张祥冰 新型的光纤无源器件-光纤法布里-珀罗调谐滤波器 , 第4期 2 * |
| 《浙江大学硕士学位论文》 20060515 程乔乔 可调谐光纤法布里-帕罗滤波器控制器设计及其在系统中的应用 , 2 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698585A (en) * | 2015-04-01 | 2015-06-10 | 武汉理工大学 | Adjustable optical fiber f-p filter |
| CN104698585B (en) * | 2015-04-01 | 2017-07-11 | 武汉理工大学 | Adjustable optic fibre F P wave filters |
| CN104767011A (en) * | 2015-04-13 | 2015-07-08 | 西北工业大学 | Temperature-tunable bandstop filter based on conductive rubber material |
| CN104767011B (en) * | 2015-04-13 | 2017-06-13 | 西北工业大学 | Temperature tunable band-stop filter based on conductive rubber material |
| CN109557617A (en) * | 2018-12-25 | 2019-04-02 | 珠海光库科技股份有限公司 | Tunable filter |
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Application publication date: 20110629 |