CN2733383Y - Improved structure of optical attenuator - Google Patents
Improved structure of optical attenuator Download PDFInfo
- Publication number
- CN2733383Y CN2733383Y CNU2004200794633U CN200420079463U CN2733383Y CN 2733383 Y CN2733383 Y CN 2733383Y CN U2004200794633 U CNU2004200794633 U CN U2004200794633U CN 200420079463 U CN200420079463 U CN 200420079463U CN 2733383 Y CN2733383 Y CN 2733383Y
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- reflection film
- optical attenuator
- curved edge
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- utility
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Abstract
The utility model discloses an improved structure of optical attenuator, a total reflecting film and an anti-reflection film which are plated on the optical light-transmitting face of the optical attenuator are provided with curved edges which are attenuating shape following a shift factor linearity or approximate linearity. Because the optical light-transmitting face of the utility model is plated with the total reflection film and the anti-reflection film with the curve edges which are attenuating shape following a shift factor linearity or approximate linearity, the utility model has slow speed following the translational attenuation and high resolution and can be manufactured by adopting multiple modes, such as photography, photolithography, print, etc. The improved structure of the optical attenuator has easy processing and manufacture.
Description
Technical field
The utility model relates to a kind of optical-fibre communications optical passive component, particularly relates to a kind of improvement structure of optical attenuator.
Background technology
Fibre optic attenuator has multiple structure and form, and wherein a kind of scheme has reflectivity gradual change reflectance coating, by the optical glass sheet change light intensity mode (as shown in Figure 1) of translation or rotation reflectivity gradual change reflectance coating.In Fig. 1, fibre optic attenuator comprises the reflecting optics 103 of double-fiber collimator 101, total reflection eyeglass 102, reflectivity gradual change.When reflecting optics 103 between double-fiber collimator 101 and total reflection eyeglass 102 among incident light and the reflected light when mobile, the light intensity that two optical fiber are accepted can change gradually, thereby forms attenuator (seeing patent USP6,130,984).
Advantage of this spline structure, during reflecting optics 103 translations, the dB value of attenuator will be with reflecting optics 103 displacement linear change.The minimum often pad value of this attenuator problem is often bigger than normal.
The another kind of common form of fibre optic attenuator as shown in Figure 2, it comprise 01,202 for collimating apparatus 201,202, nut 203, top be the method that the is in the light sheet 204 of special shape.
UPS wherein is a kind of structure preferably, because the special shape design is adopted on method 204 tops of being in the light, and the decay that it is in the light and produces, the dB value that makes be in the light method sheet 204 translational movements and the decay of being in the light is near linear change, in addition other modes that are in the light.
The mode that is in the light like this weakness, mechanical parts technology is made and is controlled and is difficult for like this, and they are too fast with the speed of translation decay in another aspect, the higher resolution of difficult realization.
The utility model content
The purpose of this utility model is to provide a kind of processing and manufacturing easily, ease up, have the improvement structure of high-resolution optical attenuator with the speed of translation decay.
For achieving the above object, technical solution of the present utility model is:
The utility model is a kind of improvement structure of optical attenuator, the total reflection film of the logical light face plating of its optics and be coated with anti-reflection film and have curved edge.
Described curved edge is with translational movement linearity or approximately linear decay shape.
The total reflection film of the logical light face plating of described optics adopts the pencil point-shaped curved edge, and remainder is an anti-reflection film.
The anti-reflection film of the logical light face plating of described optics adopts the pencil point-shaped curved edge, and remainder is a total reflection film.
The total reflection film of the logical light face plating of described optics adopts the approximate trapezoid curved edge, and remainder is an anti-reflection film.
The curved edge of the total reflection film of the logical light face plating of described optics is a spiral shaped edges.
Described curved edge can adopt film or photo mode to realize the pattern of multiform shape.
After adopting such scheme, because the total reflection film of the logical light face plating of the utility model optics and the anti-reflection film of plating have curved edge, this curved edge is with translational movement linearity or approximately linear decay shape, thereby, the utlity model has the speed that decays with translation and relax advantage with high-resolution.And because the utility model is to adopt glass material and total reflection film to realize that light intensity changes, the benefit that it brings is the profile easy implementation that is in the light, and is easy to processing than the direct employing frequency modulated light metalwork or the edge of a knife, can adopt multiple modes such as photograph, photoetching, printing to make.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is a kind of structural representation of commonly using fibre optic attenuator;
Fig. 2 is the structural representation that another kind is commonly used fibre optic attenuator;
Fig. 3 is the front elevation of first embodiment of the utility model;
Fig. 4 is the front elevation of second embodiment of the utility model;
Fig. 5 is the front elevation of the 3rd embodiment of the utility model;
Fig. 6 A, 6B are the structural representations of the 4th embodiment of the utility model;
Fig. 7 is an application synoptic diagram of the present utility model;
Fig. 8 uses the fibre optic attenuator structural representation that the utility model is made.
Embodiment
Fig. 7 is an application synoptic diagram of the present utility model.It comprises optical fiber collimator 301,302, attenuator 303.
As shown in Figure 3, the improvement structure of the utility model optical attenuator, attenuator 303 is divided into two zones, the A district is a plating total reflection film, the B district is the plating anti-reflection film, its edge can adopt the particular curve edge to guarantee that attenuator 303 moves between two collimating apparatuss 301,302, and damping capacity dB value or light intensity attenuation become number percent and 303 translational movements near linearity or linear relationship.
Fig. 3 is first embodiment of the utility model.The total reflection film (A district) of the logical light face plating of described optics adopts the pencil point-shaped curved edge, and remainder is anti-reflection film (B district).
Fig. 4 is second embodiment of the utility model.The anti-reflection film (B district) of the logical light face plating of described optics adopts the pencil point-shaped curved edge, and remainder is total reflection film (A district).
First embodiment is actual and out of position with second embodiment total reflection film (A district) and anti-reflection film (B district).
Fig. 5 is the 3rd embodiment of the utility model.The anti-reflection film (B district) of the logical light face plating of described optics adopts half of total reflection film, that is: total reflection film (A district) adopts the approximate trapezoid curved edge, and remainder is anti-reflection film (B district).Certainly its edge can be straight line or curve.
In fact, adopt photoetching and coating technique we can realize various forms total reflection film edge on glass sheet, to reach translational movement and damping capacity relation, make the deviser with bigger design space.
Except translation, also can design rotating manner.Fig. 6 A, 6B are the 4th embodiment of the utility model.It is spiral total reflection film external form, and the A district is a total reflection film.Constantly increase in the rotary course and cover hot spot (GB) area realize progressively the decaying purpose of light intensity.
In above-mentioned each figure, sign GB is a hot spot.
Adopt modern lithography corrosion technology, the edge shape of the utility model attenuator can reach the shape of actual required or experimental design.Can very sharp keen shape as the part that is in the light in Fig. 3, realize that this patent also adopts film in that the metalwork light barrier is then difficult, or the photo mode realizes the attenuator pattern of multiform shape, this patent is made for attenuator a kind of design space is provided.
Fig. 8 uses the fibre optic attenuator structural representation that the utility model is made.It comprises double-fiber collimator 601, attenuator 602, completely reflecting mirror 603, fixedly collimating apparatus and completely reflecting mirror support 604, fixedly collimating apparatus support 605, scolding tin 606 (or glue), translation piece 607, screw rod 608.
Inventive point of the present utility model just is: the total reflection film of the logical light face plating of optics and be coated with anti-reflection film and have curved edge.
Claims (7)
1. the improvement structure of an optical attenuator is characterized in that: the total reflection film of the logical light face plating of its optics and be coated with anti-reflection film and have curved edge.
2. according to the improvement structure of the described optical attenuator of claim 1, it is characterized in that: described curved edge is the shape that decays with translational movement linearity or approximately linear.
3. according to the improvement structure of the described optical attenuator of claim 1, it is characterized in that: the total reflection film of the logical light face plating of described optics adopts the pencil point-shaped curved edge, and remainder is an anti-reflection film.
4. according to the improvement structure of the described optical attenuator of claim 1, it is characterized in that: the anti-reflection film of the logical light face plating of described optics adopts the pencil point-shaped curved edge, and remainder is a total reflection film.
5. according to the improvement structure of the described optical attenuator of claim 1, it is characterized in that: the total reflection film of the logical light face plating of described optics adopts the approximate trapezoid curved edge, and remainder is an anti-reflection film.
6. according to the improvement structure of the described optical attenuator of claim 1, it is characterized in that: the curved edge of the total reflection film of the logical light face plating of described optics is a spiral shaped edges.
7. according to the improvement structure of the described optical attenuator of claim 1 to 6, it is characterized in that: described curved edge can adopt film, photo or mode of printing to realize the pattern of multiform shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200794633U CN2733383Y (en) | 2004-09-08 | 2004-09-08 | Improved structure of optical attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200794633U CN2733383Y (en) | 2004-09-08 | 2004-09-08 | Improved structure of optical attenuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2733383Y true CN2733383Y (en) | 2005-10-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200794633U Expired - Fee Related CN2733383Y (en) | 2004-09-08 | 2004-09-08 | Improved structure of optical attenuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2733383Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279008A (en) * | 2010-06-12 | 2011-12-14 | 飞秒光电科技(西安)有限公司 | Optical fiber sensor based on diameter-gradient barrier |
| CN104392054A (en) * | 2014-11-27 | 2015-03-04 | 西华大学 | Design method of elliptical optical attenuation piece |
-
2004
- 2004-09-08 CN CNU2004200794633U patent/CN2733383Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279008A (en) * | 2010-06-12 | 2011-12-14 | 飞秒光电科技(西安)有限公司 | Optical fiber sensor based on diameter-gradient barrier |
| CN104392054A (en) * | 2014-11-27 | 2015-03-04 | 西华大学 | Design method of elliptical optical attenuation piece |
| CN104392054B (en) * | 2014-11-27 | 2018-11-23 | 西华大学 | A kind of ellipse optical attenuator design method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |