CN203069820U - A miniature mechanical variable optical attenuator - Google Patents
A miniature mechanical variable optical attenuator Download PDFInfo
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- CN203069820U CN203069820U CN 201320003651 CN201320003651U CN203069820U CN 203069820 U CN203069820 U CN 203069820U CN 201320003651 CN201320003651 CN 201320003651 CN 201320003651 U CN201320003651 U CN 201320003651U CN 203069820 U CN203069820 U CN 203069820U
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- optical attenuator
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Abstract
The utility model relates to a miniature mechanical variable optical attenuator comprising a housing, a double-fiber collimator, a holophote, and a light shielding bolt. The holophote and the double-fiber collimator arranged in a same straight line are disposed in the housing and arranged at intervals. The double fiber pigtails of the double-fiber collimator are exposed to external environment. The light shielding bolt is disposed in the housing through thread engagement and faces a separating area between the holophote and the double-fiber collimator. Preferably, the light shielding bolt is vertical to the straight line where the holophote and the double-fiber collimator are arranged. A sleeve is mounted in the housing and faces the separating area. The light shielding bolt is disposed in the sleeve through thread engagement. A rubber ring is arranged between the housing and the light shielding bolt and is sleeved on the light shielding bolt. The double-fiber collimator also comprises a C lens, a glass tube, and a gold-plated hollow tube. The miniature mechanical adjustable optical attenuator has advantages of ingenious design, a concise structure, a small size, high sensitivity, good stability, easy use, and low production cost and is suitable for large-scale popularization and application.
Description
Technical field
The utility model relates to optical network device and luminous energy communication technical field, and particularly the optical attenuator technical field in the optical passive component specifically refers to a kind of small-sized machine formula adjustable optical attenuator.
Background technology
Optical attenuator is a kind of very important optical passive component that occurs along with in the Fibre Optical Communication Technology development, and it has been suitable for the attenuate light signal intensity.
At present, optical attenuator roughly is divided into mechanical type adjustable optical attenuator (MVOA), reaches electric adjustable optical attenuator (EVOA), and therein, mechanical type adjustable optical attenuator (MVOA) uses the most extensive, and cost performance is the highest.The mechanical type adjustable optical attenuator volume of existing market is big, poor sensitivity, stability many shortcomings such as bad.The mechanical type adjustable optical attenuator of some special constructions, though improved sensitivity and the stability of optical attenuator, the project organization complexity is used inconvenience, the production cost height, the product price ratio is not high.
Therefore, need provide a kind of small-sized machine formula adjustable optical attenuator, it is little, highly sensitive that it has a volume, and good stability uses advantages such as simple and easy, that production cost is low.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, a kind of small-sized machine formula adjustable optical attenuator is provided, this small-sized machine formula adjustable optical attenuator design is ingenious, simple for structure, it is little to have volume, highly sensitive, good stability, use advantages such as simple and easy, that production cost is low, be suitable for large-scale promotion application.
To achieve these goals, small-sized machine formula adjustable optical attenuator of the present utility model, be characterized in, comprise housing, double-fiber collimator, completely reflecting mirror and the bolt that is in the light, described completely reflecting mirror and described double-fiber collimator are arranged in the described housing in line and the space arranges, two optical fiber pigtails of described double-fiber collimator are exposed outside, and the described bolt thread that is in the light is engaged in the described housing and the spacer region between described completely reflecting mirror and described double-fiber collimator.
Preferably, the described straight line of bolt perpendicular to described completely reflecting mirror and described double-fiber collimator place that be in the light.
Preferably, described small-sized machine formula adjustable optical attenuator also comprises sleeve, and described sleeve is installed in the described housing and towards described spacer region, the described bolt thread that is in the light is engaged in the described sleeve.
More preferably, described sleeve is outer inner thread sleeve, and described outer inner thread sleeve is threadably engaged in the described housing.
More preferably, described small-sized machine formula adjustable optical attenuator also comprises dust cap, and described dust cap is positioned at outside the described housing and is installed on the described sleeve.
Preferably, described small-sized machine formula adjustable optical attenuator also comprises rubber ring, and described rubber ring is at described housing and describedly be in the light between the bolt and be socketed on the described bolt that is in the light.
Preferably, described double-fiber collimator also comprises the C lens, glass tube and gold-plated hollow tube, described pair of optical fiber pigtail comprises two optical fiber kapillaries, first optical fiber and second optical fiber, described pair of optical fiber kapillary comprises first terminal and second end, described first end connects described first optical fiber and described second optical fiber respectively, the described C lens of the described second terminal connection, described C lens and described pair of optical fiber kapillary all are installed in the described glass tube, described C lens are towards described completely reflecting mirror, described glass tube is installed in the described gold-plated hollow tube, and described gold-plated hollow tube is installed in the described housing.
More preferably, described C lens comprise first end and the second end, described first end is non-spherical lens, the end face of described the second end is 8 degree oblique angle faces, described non-spherical lens is towards described completely reflecting mirror, the end face of described second end is 8 degree oblique angle faces, fits with the end face of described the second end.
More preferably, described first optical fiber becomes the arrangement of 8 fonts to form with described second optical fiber.
Preferably, described completely reflecting mirror comprises glass body and argent high-reflecting film, and described argent high-reflecting film is arranged on the described glass body.
The beneficial effects of the utility model specifically are:
1, small-sized machine formula adjustable optical attenuator of the present utility model comprises housing, double-fiber collimator, completely reflecting mirror and the bolt that is in the light, described completely reflecting mirror and described double-fiber collimator are arranged in the described housing in line and the space arranges, two optical fiber pigtails of described double-fiber collimator are exposed outside, the described bolt thread that is in the light is engaged in the described housing and the spacer region between described completely reflecting mirror and described double-fiber collimator, design ingenious, simple for structure, it is little to have volume, highly sensitive, good stability, use simple and easy, advantages such as production cost is low are suitable for large-scale promotion application.
2, small-sized machine formula adjustable optical attenuator of the present utility model also comprises rubber ring, described rubber ring is at described housing and describedly be in the light between the bolt and be socketed on the described bolt that is in the light, by rubber ring and the mutual friction of housing phase, can slow down the bolt that is in the light, make it stop light signal more lentamente, thereby further improve sensitivity of the present utility model, design ingenious, simple for structure, it is little to have volume, highly sensitive, good stability, use advantages such as simple and easy, that production cost is low, be suitable for large-scale promotion application.
Description of drawings
Fig. 1 is the inner structure synoptic diagram of a specific embodiment of the present utility model.
Fig. 2 is that the master of the double-fiber collimator of specific embodiment shown in Figure 1 looks synoptic diagram.
Fig. 3 is that the master of the sleeve of specific embodiment shown in Figure 1 and the bolt that is in the light looks synoptic diagram.
Fig. 4 is the inner structure synoptic diagram of the inside optical signal transmission of specific embodiment shown in Figure 1 when undamped.
Fig. 5 is the inner structure synoptic diagram of the inside optical signal transmission of specific embodiment shown in Figure 1 when decay is arranged.
Fig. 6 is a kind of duplex construction profile synoptic diagram of specific embodiment shown in Figure 1.
Fig. 7 is the another kind of duplex construction profile synoptic diagram of specific embodiment shown in Figure 1.
Embodiment
In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also Fig. 1-shown in Figure 3, small-sized machine formula adjustable optical attenuator of the present utility model comprises housing 1, double-fiber collimator 2, completely reflecting mirror 3 and the bolt 5 that is in the light, described completely reflecting mirror 3 and described double-fiber collimator 2 are arranged in the described housing 1 in line and the space arranges, two optical fiber pigtails 21 of described double-fiber collimator 2 expose outside, and the described bolt 5 that is in the light is threadably engaged in the described housing 1 and the spacer region between described completely reflecting mirror 3 and described double-fiber collimator 2.Double-fiber collimator is one of topmost optical element in the optical passive component, and there is Zhongke Optical fiber Communication Device Co., Ltd., Shanghai in manufacturer, upward optical-fibre communications device company limited, Shanghai Xiang light optical-fibre communications device company limited etc. are annotated in the sea.
The described bolt 5 that is in the light is that the light signal of described double-fiber collimator 2 inputs is carried out decay.Described double-fiber collimator 2 is the important carriers of light signal input and output.Described completely reflecting mirror 3 is the optical elements that change the optical signal transmission direction.
The described bolt 5 that is in the light can be perpendicular to the straight line at described completely reflecting mirror 3 and described double-fiber collimator 2 places, also can acutangulate with this straight line or the obtuse angle setting, see also shown in Figure 1, in specific embodiment of the utility model, the described straight line of bolt 5 perpendicular to described completely reflecting mirror 3 and described double-fiber collimator 2 places that be in the light.
The described bolt 5 that is in the light is threadably engaged in the described housing 1 and can adopts any suitable structure, see also Fig. 1 and shown in Figure 3, in specific embodiment of the utility model, described small-sized machine formula adjustable optical attenuator also comprises sleeve 4, described sleeve 4 is installed in the described housing 1 and towards described spacer region, and the described bolt 5 that is in the light is threadably engaged in the described sleeve 4.
Described sleeve 4 is installed in the described housing 1 can adopt any suitable structure, see also Fig. 1 and shown in Figure 3, in specific embodiment of the utility model, described sleeve 4 is outer inner thread sleeves 4, and described outer inner thread sleeve 4 is threadably engaged in the described housing 1.Described sleeve 4 also can be glued in the described housing 1.
For dustproof, see also shown in Figure 1ly, in specific embodiment of the utility model, described small-sized machine formula adjustable optical attenuator also comprises dust cap 7, it is outer and be installed on the described sleeve 4 that described dust cap 7 is positioned at described housing 1.
In order to improve sensitivity, preferably, described small-sized machine formula adjustable optical attenuator also comprises rubber ring 6, and described rubber ring 6 is at described housing 1 and describedly be in the light between the bolt 5 and be socketed on the described bolt 5 that is in the light.See also Fig. 1 and shown in Figure 3, in specific embodiment of the utility model, described rubber ring 6 is described sleeve 4 and described being in the light between the bolt 5.
Described rubber ring 6 can be socketed in any suitable position of the described bolt 5 that is in the light, and sees also Fig. 1 and shown in Figure 3, and in specific embodiment of the utility model, described rubber ring 6 is glued at the stage casing of the described bolt 5 that is in the light.
Described double-fiber collimator 2 can have any suitable structure, see also illustrated in figures 1 and 2, in specific embodiment of the utility model, described double-fiber collimator 2 also comprises C lens 22, glass tube 23 and gold-plated hollow tube 24, described pair of optical fiber pigtail 21 comprises two optical fiber kapillaries 25, first optical fiber 26 and second optical fiber 27, described pair of optical fiber kapillary 25 comprises first terminal and second end, described first end connects described first optical fiber 26 and described second optical fiber 27 respectively, the described C lens 22 of the described second terminal connection, described C lens 22 and described pair of optical fiber kapillary 25 all are installed in the described glass tube 23, described C lens 22 are towards described completely reflecting mirror 3, described glass tube 23 is installed in the described gold-plated hollow tube 24, and described gold-plated hollow tube 24 is installed in the described housing 1.
Described C lens 22 and described pair of optical fiber kapillary 25 all are installed in the described glass tube 23, described glass tube 23 is installed in the described gold-plated hollow tube 24, described gold-plated hollow tube 24 is installed in the described housing 1, can adopt any suitable structure, in specific embodiment of the utility model, described C lens 22 and described pair of optical fiber kapillary 25 all are glued in the described glass tube 23, described glass tube 23 is glued in the described gold-plated hollow tube 24, and described gold-plated hollow tube 24 is glued in the described housing 1.
Described C lens 22 can have any suitable structure, see also illustrated in figures 1 and 2, in specific embodiment of the utility model, described C lens 22 comprise first end and the second end, described first end is non-spherical lens, and the end face of described the second end is 8 degree oblique angle faces, and described non-spherical lens is towards described completely reflecting mirror 3, the end face of described second end is 8 degree oblique angle faces, fits with the end face of described the second end.
Described first optical fiber 26 and described second optical fiber 27 can adopt any suitable shape to arrange and form, and in specific embodiment of the utility model, 27 one-tenth 8 fonts of described first optical fiber 26 and described second optical fiber are arranged and formed.
Described completely reflecting mirror 3 can have any suitable structure, in specific embodiment of the utility model, described completely reflecting mirror 3 comprises glass body (not shown) and argent high-reflecting film (not shown), and described argent high-reflecting film is arranged on the described glass body.Glass body can adopt glass BK7(manufacturer Shanghai Australia general optical communication company limited) make.
Described argent high-reflecting film is arranged on and can adopts any suitable structure on the described glass body, and in specific embodiment of the utility model, described argent high-reflecting film is plated on described glass body.
Shown in arrow among Fig. 4, when light signal is imported first optical fiber 26 of described double-fiber collimator 2, the described bolt 5 that is in the light is not cut light path, and optical signal transmission is to the reflecting surface of described completely reflecting mirror 3, and light signal reflection takes place from second optical fiber, 27 outputs of described double-fiber collimator 2.
Shown in arrow among Fig. 5, when light signal is imported first optical fiber 26 of described double-fiber collimator 2, along with the described slowly incision light path of bolt 5 that is in the light, optical signals slowly and stably blocks in the described bolt 5 that is in the light, optical signal transmission dies down gradually to the light signal strength on the reflecting surface of described completely reflecting mirror 3 and is transferred to the reflecting surface of described completely reflecting mirror 3 until no light signal, thereby cause described double-fiber collimator 2 second optical fiber 27 light signal strength by by force to a little less than, until the process of not having light signal output fully.
Therefore, adopt the utility model, the spacer region that slowly gos deep between described double-fiber collimator 2 and the completely reflecting mirror 3 by the bolt 5 that is in the light is in the light.Because the internal thread of described rubber ring 6 and described sleeve 4 rubs, make the described bolt 5 that is in the light can slowly and stably go deep into light path simultaneously, thus the light signal of second optical fiber 27 of the described double-fiber collimator 2 of decaying.Therefore, can further improve the stability of the described bolt 5 decay optical path signals that are in the light.
Fig. 6 and Fig. 7 have provided two kinds of duplex construction profile synoptic diagram of specific embodiment shown in Figure 1.Can change the direction of duplex mechanical type adjustable optical attenuator fiber port according to different demands.Be applicable to two-way and multi-channel optical fibre communication system.
Compared with prior art, advantage of the present utility model is:
(1) the utility model uses double-fiber collimator 2 to replace two single fiber collimating apparatuss of existing product, has reduced the product cost of raw material.
(2) the utility model uses two single fiber collimating apparatuss of double-fiber collimator 2 replacement existing products, has reduced the volume of mechanical type adjustable optical attenuator.
(3) gummed has rubber ring 6 on the bolt 5 that is in the light of the present utility model, by the internal thread phase mutual friction of rubber ring 6 with line sleeve 4, can slow down the bolt 5 that is in the light, and makes it stop light signal lentamente, thereby improves sensitivity of the present utility model.
(4) the utility model also provides duplex mechanical type adjustable optical attenuator, can change the direction of duplex mechanical type adjustable optical attenuator fiber port according to different demands.
(5) this duplex mechanical type adjustable optical attenuator is applicable to two-way and multi-channel optical fibre communication system, effectively reduces very much the product cost of raw material, has improved production efficiency.
To sum up, small-sized machine formula adjustable optical attenuator of the present utility model design is ingenious, simple for structure, and it is little, highly sensitive to have a volume, and good stability uses advantages such as simple and easy, that production cost is low, is suitable for large-scale promotion application.
In this instructions, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (10)
1. small-sized machine formula adjustable optical attenuator, it is characterized in that, comprise housing, double-fiber collimator, completely reflecting mirror and the bolt that is in the light, described completely reflecting mirror and described double-fiber collimator are arranged in the described housing in line and the space arranges, two optical fiber pigtails of described double-fiber collimator are exposed outside, and the described bolt thread that is in the light is engaged in the described housing and the spacer region between described completely reflecting mirror and described double-fiber collimator.
2. small-sized machine formula adjustable optical attenuator according to claim 1 is characterized in that, the described straight line of bolt perpendicular to described completely reflecting mirror and described double-fiber collimator place that be in the light.
3. small-sized machine formula adjustable optical attenuator according to claim 1, it is characterized in that, described small-sized machine formula adjustable optical attenuator also comprises sleeve, and described sleeve is installed in the described housing and towards described spacer region, the described bolt thread that is in the light is engaged in the described sleeve.
4. small-sized machine formula adjustable optical attenuator according to claim 3 is characterized in that, described sleeve is outer inner thread sleeve, and described outer inner thread sleeve is threadably engaged in the described housing.
5. small-sized machine formula adjustable optical attenuator according to claim 3 is characterized in that, described small-sized machine formula adjustable optical attenuator also comprises dust cap, and described dust cap is positioned at outside the described housing and is installed on the described sleeve.
6. small-sized machine formula adjustable optical attenuator according to claim 1 is characterized in that, described small-sized machine formula adjustable optical attenuator also comprises rubber ring, and described rubber ring is at described housing and describedly be in the light between the bolt and be socketed on the described bolt that is in the light.
7. small-sized machine formula adjustable optical attenuator according to claim 1, it is characterized in that, described double-fiber collimator also comprises the C lens, glass tube and gold-plated hollow tube, described pair of optical fiber pigtail comprises two optical fiber kapillaries, first optical fiber and second optical fiber, described pair of optical fiber kapillary comprises first terminal and second end, described first end connects described first optical fiber and described second optical fiber respectively, the described C lens of the described second terminal connection, described C lens and described pair of optical fiber kapillary all are installed in the described glass tube, described C lens are towards described completely reflecting mirror, described glass tube is installed in the described gold-plated hollow tube, and described gold-plated hollow tube is installed in the described housing.
8. small-sized machine formula adjustable optical attenuator according to claim 7, it is characterized in that, described C lens comprise first end and the second end, described first end is non-spherical lens, the end face of described the second end is 8 degree oblique angle faces, described non-spherical lens is towards described completely reflecting mirror, and the end face of described second end is 8 degree oblique angle faces, fits with the end face of described the second end.
9. small-sized machine formula adjustable optical attenuator according to claim 7 is characterized in that, described first optical fiber becomes the arrangement of 8 fonts to form with described second optical fiber.
10. small-sized machine formula adjustable optical attenuator according to claim 1 is characterized in that, described completely reflecting mirror comprises glass body and argent high-reflecting film, and described argent high-reflecting film is arranged on the described glass body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320003651 CN203069820U (en) | 2013-01-06 | 2013-01-06 | A miniature mechanical variable optical attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320003651 CN203069820U (en) | 2013-01-06 | 2013-01-06 | A miniature mechanical variable optical attenuator |
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| Publication Number | Publication Date |
|---|---|
| CN203069820U true CN203069820U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320003651 Expired - Fee Related CN203069820U (en) | 2013-01-06 | 2013-01-06 | A miniature mechanical variable optical attenuator |
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| CN (1) | CN203069820U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI596392B (en) * | 2015-12-15 | 2017-08-21 | 波若威科技股份有限公司 | Variable optical attenuator |
| CN113062911A (en) * | 2021-03-16 | 2021-07-02 | 深圳市星欣磊实业有限公司 | Self-locking gapless adjusting screw with torque and optical attenuator |
-
2013
- 2013-01-06 CN CN 201320003651 patent/CN203069820U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI596392B (en) * | 2015-12-15 | 2017-08-21 | 波若威科技股份有限公司 | Variable optical attenuator |
| CN113062911A (en) * | 2021-03-16 | 2021-07-02 | 深圳市星欣磊实业有限公司 | Self-locking gapless adjusting screw with torque and optical attenuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20220106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |