CN2650159Y - Tuneable optical fiber grating division-plugging multiplexer - Google Patents
Tuneable optical fiber grating division-plugging multiplexer Download PDFInfo
- Publication number
- CN2650159Y CN2650159Y CNU032096291U CN03209629U CN2650159Y CN 2650159 Y CN2650159 Y CN 2650159Y CN U032096291 U CNU032096291 U CN U032096291U CN 03209629 U CN03209629 U CN 03209629U CN 2650159 Y CN2650159 Y CN 2650159Y
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- China
- Prior art keywords
- blocking device
- optical attenuator
- rod
- guiding body
- beam blocking
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Abstract
A mechanical adjustable and variable optical attenuator is provided, which consists of a shell, a beam barrier component and a collimator, the shell is arranged with a horizontally placed duct, both ends of the duct are equipped with one collimator, collimator is connected with an external optical fiber, an attenuation cavity is arranged between two collimators, the beam barrier component is inserted into the attenuation cavity, the beam barrier component has a tail end, a thorn type front end and a concave barrier face extended from the tail end to the thorn front end, the beam barrier component is securely connected with a horizontally extended guide rod, which is positioned in a horizontal through hole in the shell. The other end of the guide rod opposite to the beam barrier component is equipped with an external coupling piece firmly connected. The central axis of the beam barrier component is perpendicular to the transmitting direction of the attenuated beam. The barrier of the beam depends on the movement of beam barrier component. The inner curved quasi-taper of the beam barrier component can facilitate the specified components with higher attenuation precision.
Description
Technical field:
The utility model relates to a kind of optical device, relates in particular to a kind of optical attenuator, particularly a kind of mechanical conditioning type adjustable optical attenuator.
Background technology:
In the prior art, the light-barrier type attenuator is used to the light beam in the optical systems such as attenuating fiber communication system, the light-barrier type attenuator comes the stop portions light beam by insert light stopper in light path, the light-barrier type attenuator can be worked with the incoherent mode of polarization so that wavelength is uncorrelated, and have high reliability and high duplication, the light-barrier type attenuator has bigger attenuation range, relatively be easy to manufacture, but the volume of light-barrier type attenuator is generally bigger, and, in order to reach higher precision, the light-barrier type attenuator needs micron-sized precision optical machinery and controls.
Summary of the invention:
Technical problem to be solved in the utility model is: because in the prior art, the volume of light-barrier type attenuator is generally bigger, and in order to reach higher precision, the light-barrier type attenuator needs micron-sized precision optical machinery and controls.The utility model provides a kind of mechanical conditioning type adjustable optical attenuator for the technical scheme that above-mentioned technical matters adopted that solves in the prior art, described this mechanical conditioning type adjustable optical attenuator is by shell, beam blocking device and beam Propagation device constitute, wherein, described beam blocking device is arranged on the inside of described shell, described beam Propagation device is made of collimating apparatus, be provided with a conduit in the described shell, described conduit passes described shell, each installation of the two ends of described conduit is provided with a described collimating apparatus, described collimating apparatus is connected with external fiber, between two described collimating apparatuss damping chamber is arranged, described beam blocking device inserts and is arranged in the described damping chamber, described beam blocking device has a tail end, thorn-like front end and a bow of being extended to the thorn-like front end by tail end face that is in the light, the tail end of described beam blocking device is connected with a guiding body of rod.Be provided with a guide pole guide hole in the described shell, the described guiding body of rod is arranged in the described guide pole guide hole, the described guiding body of rod is connected by threaded engagement with the guide pole guide hole, the other end with respect to the beam blocking device at the guiding body of rod is provided with an outside coupling part, described coupling part and described guide hole have been formed the control device that is associated with described beam blocking device, be used for the transverse movement of control bundle blocking device, thereby change by the damping capacity of beam blocking device to light beam.Concrete, described collimating apparatus is a self-aggregation lens, also can be C type lens, the shape of described beam blocking device is the director circle cone that the outside is concave surface, described coupling part can be the hand-control device such as handle or knob etc., described beam blocking device, the described guiding body of rod and described coupling part can be single integral piece, also can form by single device and their assembly parts, further, can also be provided with sealing ring between the described guiding body of rod and the described guide hole,, prevent that foul from polluting its internal components in order to strengthen the sealing of optical attenuator.
The utility model and prior art contrast, and effect is positive and tangible.The utility model is simple and practical, and control assembly of the present utility model is connected with the blocking device of light beam, thereby can change the beam attenuation amount that is caused by the beam blocking device.The utility model also is provided with the beam blocking device curved surface that is in the light of inside bend, thereby has reached better attenuation accuracy.
Description of drawings:
Fig. 1 is vertical sectional structure synoptic diagram of first preferred embodiment of a kind of mechanical conditioning type adjustable optical attenuator of the utility model.
Fig. 2 is the structural representation of control assembly of second preferred embodiment of a kind of mechanical conditioning type adjustable optical attenuator of the utility model.
Fig. 3 is longitudinal center's sectional view of beam blocking device of the 3rd preferred embodiment of a kind of mechanical conditioning type adjustable optical attenuator of the utility model.
Fig. 4 is the lateral perspective view of beam blocking device of the 3rd preferred embodiment of a kind of mechanical conditioning type adjustable optical attenuator of the utility model.
As shown in Figure 1, a kind of mechanical conditioning type adjustable optical attenuator of the present utility model, by shell 22, beam blocking device 32 and beam Propagation device constitute, wherein, described beam blocking device 32 is arranged on the inside of described shell 22, described beam Propagation device is made of collimating apparatus 26, be provided with a conduit that vertically passes 24 in the described shell 22, each installation of the two ends of described conduit 24 is provided with a described collimating apparatus 26, described collimating apparatus 26 is connected with external fiber 14, between two described collimating apparatuss 24 damping chamber 30 is arranged, described beam blocking device 32 inserts and is provided with in the described damping chamber 30, described beam blocking device 32 has a tail end 36, thorn-like front end 38 and a bow of being extended to thorn-like front end 38 by tail end 36 face that is in the light, the tail end of described beam blocking device 32 connects the guiding body of rod 44 along horizontal expansion.The described guiding body of rod 44 is installed in the horizontal guide hole 34 that passes in the shell.Be provided with screw thread on the described guiding body of rod 44, and match with the internal thread of described guide hole 34, when the guiding body of rod 44 rotated guide hole 34 in, beam blocking device 32 was laterally mobile along the track linearity vertical with light beam 50.The other end with respect to beam blocking device 32 at the guiding body of rod 44 is provided with a coupling part 46, described coupling part 46 and described guide hole 34 have been formed the control device that is associated with described beam blocking device 32, be used for the transverse movement of control bundle blocking device 32, thereby change damping capacity by 32 pairs of light beams 50 of beam blocking device.Concrete, described collimating apparatus 26 is that self-aggregation lens also can be C type lens, the shape of described beam blocking device 32 is the director circle cones that are concave surface, described coupling part 46 can be the hand-control device such as handle or knob etc., described beam blocking device 32, the described guiding body of rod 44 and described coupling part 46 can be single integral piece, also can be made up of single device and their assembly parts.
In a preferred embodiment of the present utility model, beam blocking device 32, the guiding body of rod 44 and outside coupling part 46 are to be made of the stainless steel device that single diameter is about 3mm.Shell 22 can be made of gold-plated brass or other common used material.When making optical attenuator 20, collimating apparatus 26 is installed in the cylindrical tube 24.With collimating apparatus 26 with straight line to directly, make optical attenuator 20 obtain minimum Insertion Loss, then that the optical collimator welding is fixing.By the assembly parts that cylindrical tube 24 and collimating apparatus 26 constitute, be installed in subsequently in vertical circular hole of shell 22.Then will include beam blocking device 32, the parts of the guiding body of rod 44 and coupling part 46 screw in the guide hole 34.The high vacuum grease is applied in around the screw thread of the guiding body of rod 44, enters in the cavity 30 to prevent water vapour, and has played lubrication at the guiding body of rod 44 and 34 of guide holes.The smooth linear that this lubrication helps beam blocking device 32 moves, and prevents that beam blocking device 32 from departing from its axis.And departing from of beam blocking device 32 linear tracks can change the decay that is produced by beam blocking device 32.At last pipe 24 is used the glue fixing seal in shell 22.When regulating light decrement, the user can be manually or is automatically controlled the rotation of the guiding body of rod 44 in guide hole 34, and transversely guide hole is linear mobile to make beam blocking device 32.The lateral attitude of beam blocking device 32 has determined the degree that the path of light beam 50 between the input/output terminal collimating apparatus 26 is blocked.The moving range of beam attenuation device 32 and its length, width and concave curvature can be according to the indexs that will reach, and promptly damping capacity laterally moves the feature that changes with the device that is in the light, and comes design decision.
As shown in Figure 2, among second embodiment of the present invention, can also be provided with sealing ring 135 between the described guiding body of rod 144 and the described guide hole 134,, prevent that foul from polluting its internal components in order to strengthen the sealing of optical attenuator.
As shown in Figure 3 and Figure 4, in the 3rd embodiment of the present invention, the beam blocking device side is a curved surface 233 to beam propagation, and it is the flat back side 234 back to beam propagation.The beam blocking device is made up of two parts, and one for the concave surface director circle taper face 358, two that is in the light is the cylindricality face 359 that is in the light, and the face that is in the light joins continuously at the tail end place two of the face of being in the light 358.On the rotation symmetric figure basis as blocking device, subtriangular part it is latter half of and the front is excised, and then can obtain the face of being in the light 358.The be in the light border of face is two concave curves that intersect at most advanced and sophisticated 238 places.The be in the light border in longitudinal center cross section of face 358 is two straight lines that intersect at most advanced and sophisticated 238 places.The beam blocking device when inserting light beam, can be not around the central shaft rotation of beam attenuator, and only move as linear transverse.But the also rotatable mobile insertion light beam of beam attenuation device, its turning axle is the lateral shaft perpendicular to beam direction, i.e. the central shaft of beam attenuation device.
Claims (8)
1, a kind of mechanical conditioning type adjustable optical attenuator, by shell, beam blocking device and beam Propagation device constitute, it is characterized in that: be provided with a conduit in the described shell, described conduit passes described shell, described beam Propagation device is made of collimating apparatus, the two ends of described conduit are provided with a described collimating apparatus, described collimating apparatus is connected with external fiber, between described two collimating apparatuss damping chamber is arranged, described beam blocking device has a tail end, thorn-like front end and a bow of extending to thorn-like front end face that is in the light by tail end, described beam blocking device is arranged on the inside of described shell and is positioned at described damping chamber, the tail end of described beam blocking device is fixedlyed connected with a guiding body of rod, be provided with a guide pole guide hole in the described shell, the described guiding body of rod is arranged in the described guide pole guide hole, and the described guiding body of rod is connected by threaded engagement with the guide pole guide hole.
2, mechanical conditioning type adjustable optical attenuator as claimed in claim 1 is characterized in that: the outer end at the guiding body of rod is provided with an outside coupling part.
3, mechanical conditioning type adjustable optical attenuator as claimed in claim 1 is characterized in that: described collimating apparatus is a self-aggregation lens.
4, mechanical conditioning type adjustable optical attenuator as claimed in claim 1 is characterized in that: described collimating apparatus is C type lens.
5, mechanical conditioning type adjustable optical attenuator as claimed in claim 1 is characterized in that: the shape of described beam blocking device is the director circle cone that the outside has concave surface.
6, mechanical conditioning type adjustable optical attenuator as claimed in claim 1 is characterized in that: described beam blocking device, the described guiding body of rod and the as a whole member of described coupling part.
7, mechanical conditioning type adjustable optical attenuator as claimed in claim 1 is characterized in that: described beam blocking device, the described guiding body of rod and described coupling part are constituted by three individual members.
8, mechanical conditioning type adjustable optical attenuator as claimed in claim 1 is characterized in that: be provided with sealing ring between the described guiding body of rod and the described guide pole guide hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032096291U CN2650159Y (en) | 2003-08-11 | 2003-08-11 | Tuneable optical fiber grating division-plugging multiplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032096291U CN2650159Y (en) | 2003-08-11 | 2003-08-11 | Tuneable optical fiber grating division-plugging multiplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2650159Y true CN2650159Y (en) | 2004-10-20 |
Family
ID=34325209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032096291U Expired - Fee Related CN2650159Y (en) | 2003-08-11 | 2003-08-11 | Tuneable optical fiber grating division-plugging multiplexer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2650159Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340883C (en) * | 2005-09-23 | 2007-10-03 | 中国科学院上海光学精密机械研究所 | Mechanical light-blocking variable optical attenuator |
| CN103744144A (en) * | 2013-12-30 | 2014-04-23 | 深圳市伽蓝特科技有限公司 | Variable optical attenuator |
-
2003
- 2003-08-11 CN CNU032096291U patent/CN2650159Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340883C (en) * | 2005-09-23 | 2007-10-03 | 中国科学院上海光学精密机械研究所 | Mechanical light-blocking variable optical attenuator |
| CN103744144A (en) * | 2013-12-30 | 2014-04-23 | 深圳市伽蓝特科技有限公司 | Variable optical attenuator |
| CN103744144B (en) * | 2013-12-30 | 2016-04-20 | 深圳市伽蓝特科技有限公司 | A kind of adjustable optical attenuator |
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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 |