CN2906650Y - Adjustable optical attenuator - Google Patents
Adjustable optical attenuator Download PDFInfo
- Publication number
- CN2906650Y CN2906650Y CN 200620053817 CN200620053817U CN2906650Y CN 2906650 Y CN2906650 Y CN 2906650Y CN 200620053817 CN200620053817 CN 200620053817 CN 200620053817 U CN200620053817 U CN 200620053817U CN 2906650 Y CN2906650 Y CN 2906650Y
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- Prior art keywords
- optical fiber
- steady arm
- ring flange
- nut
- helical pitch
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses an adjustable attenuator, comprising a flange, a fiber sleeve block, an adjusting nut, and a fiber sleeve; wherein, the fiber sleeve is arranged in the fiber sleeve block, a screw-thread is arranged inside the adjusting nut, and a manual driving plate and a fiber adapter are arranged outside the adjusting nut; a lead thread matched with the adjusting nut is positioned on the outer fiber sleeve-block; the other fiber adapter is arranged coaxially on the other fiber sleeve positioned on the other side of the flange; the lead thread is induced to adjust the distance to the flange, and leads to move the same side fiber head. The utility model which relates to the adjustable attenuator is characterized in that: small size, convenient operation, and high accuracy, small insertion loss, large attenuation scope (0 to 20dBm); the utility model is random to adjust the received optical power accurately, ensuring the optical communication apparatus receiving the most suitable optical power all the time.
Description
Technical field
The utility model relates to the light variable attenuation device in a kind of optical communication field.
Background technology
Very many in communication field adjustable optical attenuator kind, adjustable optical attenuator is widespread use in whole field also, and most of adjustable optical attenuator, the general more complicated of manufacture craft, volume is also very big, therefore all can only use in the laboratory.
And the attenuator major part of installing on the current network operation equipment is a fixed attenuator, and the advantage of fixed optical attenuator is that simple in structure, cost is low; But shortcoming is to use inconvenience.Such as present most popular several fixed attenuators ,-5dBm ,-10dBm ,-3dBm etc., when carrying out project installation at the scene, the luminous power of decay-2dBmm if desired and does not have-attenuator of 2dBm on hand, can only use-replacement of 3dBm fixed attenuator.
For another example, attenuate light power-12dBm if desired and does not have-attenuator of 12dBm at hand, can only be with the replacement of-10dBm.Like this, be not greatly with the pad value of actual needs be exactly little, use very inconvenient.
This just needs a kind of attenuator that can adjust damping capacity.
The utility model content
The purpose of this utility model is to provide a kind of adjustable optical attenuator, can carry out the power attenuation adjustment to the light signal on the optical communication circuit.
The technical solution of the utility model is as follows:
A kind of adjustable optical attenuator, it comprises ring flange and optical fiber receiver; Adjust nut; The optical fiber sleeve, wherein, described optical fiber sleeve is installed in the optical fiber receiver; Be provided with screw thread in the described adjustment nut, described adjustment nut is outside equipped with a manual dial, and a fiber adapter is installed; At the outer wall of optical fiber receiver, be provided with the helical pitch screw thread that cooperates with described adjustment nut; Outside second half optical fiber receiver of the opposite side of ring flange, another fiber adapter is installed in coaxial socket; Described helical pitch nut by with the helical pitch threaded engagement, be used to adjust and ring flange between distance, the optical fiber head that drives homonymy simultaneously moves.
Described device wherein, is indicated corresponding optical power attenuation value with respect to the position of described adjustment nut on described attenuator.
Described device wherein, also is provided with dust guard in the described attenuator.
Described device, wherein, the dust-proof cushion of described dust guard for installing respectively at two ports.
Described device wherein, also comprises a steady arm, is a cylinder, and its inner wall sleeve is connected on the described manual dial, and this manual dial is provided with positioning tooth, with the mutual twisting of positioning tooth on the described steady arm inwall, and can horizontally slip mutually; The outer wall of described steady arm is provided with more fine and closely woven positioning tooth, be socketed in the circular locating slot on the described ring flange, and this locating slot inwall be parallel to the cylindrical shape steady arm axially, corresponding finer and closely woven positioning tooth is with the mutual twisting of the positioning tooth of steady arm outer wall.
Described device, wherein, also be provided with a spring between described steady arm and the described manual dial, the one end is installed on the manual dial, the other end is installed on the steady arm, and its elastic restoring force is used for described steady arm is positioned in the locating slot of described ring flange automatically.
A kind of adjustable optical attenuator provided by the utility model, volume is little, and is easy to operate, and the precision height, Insertion Loss is little, attenuation range is big by (0～20dBm); In attenuation range, can very accurately arbitrarily adjust received optical power, what so just guaranteed that optical communication equipment receives is only luminous power forever.
Description of drawings
Fig. 1 is the one-piece construction and the annexation synoptic diagram thereof of adjustable attenuator of the present utility model;
Fig. 2 is the structural representation of ring flange of the present utility model and ceramic jacket cylinder base;
Fig. 3 is the structural representation of adjustment nut of the present utility model;
Fig. 4 is that scale of the present utility model is made synoptic diagram;
Fig. 5 is that steady arm of the present utility model is made synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing, will carry out comparatively detailed explanation to each preferred embodiment of the present utility model.
The utility model adjustable optical attenuator utilizes the attenuation principle of air to light, by the distance between the adjusting transmitting-receiving optical fiber head, thereby reaches the purpose of adjusting received optical power.To shown in Figure 5, whole attenuator is divided into three parts as Fig. 1, and first is ring flange and optical fiber receiver; Second portion is to adjust nut; Third part is the optical fiber sleeve.Described optical fiber sleeve is installed in first's optical fiber receiver.Adjusting nut the inside car has screw thread, is referred to as the helical pitch nut.Manual dial of adjacent helical pitch nut processing, a fiber adapter (general part) is installed in the outside of helical pitch nut, and fiber adapter and helical pitch nut are coaxial to be vertically mounted on the manual dial.Mounting means adopts car, brill, miller skill to realize, or adopts mode such as die sinking casting to realize.The optical fiber receiver is perpendicular to ring flange, and central authorities' installation of crossing ring flange.Corresponding with the helical pitch nut on adjusting nut, at the outer wall of optical fiber receiver, be processed with the screw thread that cooperates with the helical pitch nut, be called the helical pitch screw thread.
Outside second half optical fiber receiver of the opposite side of ring flange, a fiber adapter (general part) is installed in coaxial socket, and fiber adapter is vertical the connection with ring flange equally.When in use, transmitting-receiving " optical fiber head " is inserted from the two ends of optical fiber sleeve respectively, again by with " fiber adapter " of adjusting " fiber adapter " on the nut and optical fiber sleeve outside on screw thread be tightened, thereby form optical transmission physical channel.The helical pitch nut by with the helical pitch threaded engagement, adjust the distance between it and the ring flange, " optical fiber head " that drive homonymy simultaneously moves.So just can adjust the distance between the transmitting-receiving optical fiber head easily, and then adjust the received optical power of communication apparatus.
Exactly luminous power is adjusted for convenience, the utility model consideration according to the relative position of helical pitch nut, is known and is indicated corresponding " optical power attenuation value ", just alleged " decay scale " on attenuator.Making the principle of " decay scale ", is to utilize air mathematical formulae to optical power attenuation on unit distance, by theoretical numerical evaluation, and makes in conjunction with the actual manufacturing process of adjustable attenuator.
Attenuator in use, dustproof is very important.Because dust in air may cause the uncertainty of pad value, therefore consider in attenuator, to install additional dust guard.Just add two dust-proof cushions at two ports, so just can be effectively dustproof.
For the fixing nut of adjusting, the utility model is ad hoc has counted a steady arm, and steady arm is a cylinder in fact, its inner wall sleeve is connected on the manual dial, manually processing positioning tooth on the dial,, and can horizontally slip mutually with the mutual twisting of the positioning tooth of processing on the steady arm inwall.The outer wall of steady arm also is processed with more fine and closely woven positioning tooth, is socketed in the circular locating slot of processing on the ring flange, and the locating slot inwall is parallel to the axial of cylindrical shape steady arm, also is processed with fine and closely woven positioning tooth, with the mutual twisting of the positioning tooth of steady arm.Like this, the manual dial of inwall twisting of steady arm, outer wall twisting ring flange, thus reach adjusting the purpose of nut location.
In order to allow steady arm in the sliding process, finally can both get back to automatically in the locating slot of ring flange on manual dial, the spy is at steady arm and manually add a spring between the dial, and spring one end is installed on the manual dial, and the other end is installed on the steady arm.When in use, steady arm is taken out in the locating slot of ring flange,, rotate, adjust the position of nut with respect to ring flange thereby drive manual dial by swing stop.After adjustment finishes, decontrol steady arm, steady arm is positioned in the locating slot of ring flange under the tension force of spring the most automatically, thereby reaches the location to " adjustment nut ".
Hereinafter more detailed explanation technical solutions of the utility model: the utility model variable optical attenuation apparatus, mainly comprise three parts, as shown in Figure 1, they are respectively to adjust nut 1, ring flange and optical fiber receiver 2 and optical fiber sleeve 3 (general part) etc.Please refer to Fig. 1, this three part all is coaxial connection.Adjust nut 1 and comprise three parts such as fiber adapter 11 (general part), helical pitch nut 12 and manual dial 13.Ring flange and optical fiber sleeve 2 comprise optical fiber receiver 21, ring flange 22 and fiber adapter 23 etc., and wherein optical fiber receiver 21 is processed with helical pitch screw thread 211 near the position of ring flange.The method of attachment of these three parts is, at first optical fiber sleeve 3 is installed in the optical fiber receiver 21, to adjust nut 1 again and be socketed in by the helical pitch nut 12 on it on helical pitch screw thread 211 of optical fiber sleeve, so, whole " adjustable optical attenuator " is with regard to installation.
Next introduce to adjust nut 1, adjust nut 1 comprise fiber adapter 11 (general part), helical pitch nut 12 and manually three parts such as dial 13 constitute, wherein helical pitch nut 12 vertically is installed on the manual dial 13, and concentric with manual dial 13.Outside then socket helical pitch of fiber adapter 11 (general part) nut 12, and coaxial with helical pitch nut 12, also be vertically mounted on the manual dial 13.Adjust nut like this with regard to installation.The simplest installation method for making is exactly die sinking casting, also can be, processes such as bore, mill and make by car, because therefore these manufacturing process comparative maturity has all just seldom been handed at this.
Compare with adjusting nut 1, the making of ring flange and optical fiber sleeve 2 bothers a bit a little, and optical fiber receiver 21 is concentric with ring flange 22, and vertically passes the center of ring flange 22, at last the two is fixed.One end of optical fiber receiver 21 also is to be processed with helical pitch screw thread 211 (as Fig. 1 or Fig. 4) on the side external diameter of ring flange 22, is used for being rotatably connected with helical pitch nut 12 cooperating.The other end of optical fiber receiver 21 an outside fiber adapter 23 of socket (general part), fiber adapter 23 and optical fiber receiver 21 are coaxial and be vertically mounted on the ring flange 22.
Simple manufacturing method still is the die sinking casting, and promptly optical fiber sleeve 21 and ring flange 22 and fiber adapter 23 are one-body molded.But the installation and the location of " optical fiber sleeve " 3 must be divided into two parts with optical fiber receiver 21 and make for convenience.Skid off optical fiber receiver 21 because prevent optical fiber sleeve 3, just need be at the two ends of optical fiber receiver 21 processing positioning seat, if the optical fiber sleeve is without separating into 2 part manufacturings like this, optical fiber sleeve 3 just can't have been put into optical fiber receiver 21, according to above reason, again optical fiber receiver 21 and ring flange 22 structures are repartitioned, as shown in Figure 2.
At first the installation and connection method of first half optical fiber receiver 21 and ring flange 22 and the method said previously are identical, stretch out an end of ring flange at the opposite side corresponding to helical pitch screw thread 211, have processed connecting thread 212 on the outer wall, as shown in Figure 2.23 of fiber adapter are with latter half optical fiber receiver processing and fabricating, the external diameter of fiber adapter 23, still be processed into fiber adapter, one end of internal diameter is processed into latter half optical fiber receiver, the other end then is processed into the attaching nut 231 (as Fig. 2) who matches with connecting thread 212, like this by the cooperating of attaching nut 231 and connecting thread 212, two parts optical fiber receiver is docked be tightened, just made a complete optical fiber sleeve.The two ends of optical fiber receiver 21 are processed with positioning table, can prevent that the optical fiber sleeve from skidding off from receiver.Before two parts optical fiber receiver butt joint, should at first put into optical fiber sleeve 3, could dock then and screw.Whole like this " optical fiber receiver and ring flange 2 " (as Fig. 2) part has just completed.Except one-time formed method was cast in die sinking, manufacturing process was made also can to adopt car, bore, mill etc.These technology are all very ripe, therefore just no longer described in detail.
Described optical fiber sleeve 3 is general parts, can buy everywhere, has therefore also no longer described in detail.In order can on purpose to decay to luminous power, the ad hoc cover decay scale of having counted of the utility model, method for making is on the helical pitch screw thread, polish the screw thread of small part along helical pitch screw thread 211 axially parallel directions, engrave decay scale 2111 then in the place that polishes, as shown in Figure 4, this scale is called high range.Scale reading is the side institute exponential quantity of the close ring flange of manual dial 13.
But it is not enough that this scale is only arranged, its can not guarantee to decay precision of reading.Therefore again on the sidewall of ring flange 22 near manual dial 13, engrave circular scale 221 as Fig. 4 and shown in Figure 1, tuning drive gear 131 on circular scale and the manual dial is used, and as shown in Figure 1, can point out current optical power attenuation amount more accurately.Unit scale on the circular scale 221 is littler than the scale numerical value on the helical pitch screw thread 12.So, high range 2111 and the down scale 221 on the ring flange on the helical pitch screw thread 211 cooperate together, just the damping capacity of display light power accurately.
In order to improve degree of accuracy, can manual dial 13 do big slightly.Scale on the ring flange just can be thinner like this.In addition, the helical pitch screw thread 211 on the optical fiber receiver, and the screw thread of helical pitch nut do thinner, also can obtain bigger degree of accuracy.But for the degree of stability that guarantees to adjust, just require the too point that ridge can not do, because point too, the gap will increase, and is unfavorable for guaranteeing the degree of stability of adjusting.
The utility model attenuator in use, dustproof is very important, therefore considers to install dust guard additional at the two ends of attenuator.Installation method is to install a sealing gasket 121 in the space between helical pitch nut and the fiber adapter additional, as shown in Figure 3, corresponding to opposite side at ring flange and optical fiber sleeve 2, space between optical fiber adapter head 23 and the optical fiber receiver, an identical dust-proof cushion 24 is installed, as shown in Figure 2.
For the fixing nut of adjusting, ad hocly counted a steady arm 4, as shown in Figure 5, steady arm is a cylinder in fact, it is enclosed within on the manual dial 13, manually processing positioning tooth 132 on the dial,, and can horizontally slip mutually with positioning tooth 132 interlocks on positioning tooth of processing on the steady arm inwall 43 and the manual dial.Steady arm 4 its external diameters are processed with very fine and closely woven positioning tooth 42 simultaneously, be socketed in the circular locating slot of processing on the ring flange 222, locating slot 222 walls are parallel to the axial of cylindrical shape steady arm, also be processed with positioning tooth, reach the location purpose to cooperating with the positioning tooth of steady arm.
In order to allow steady arm 4, in the sliding process, finally can be socketed on automatically in the locating slot of ring flange on manual dial 13, the spy is at steady arm and manually add a spring 5 between the dial, one end of spring is installed on the manual dial 13, and the other end is installed on the spring mounting seat 41 of steady arm 4.When in use, steady arm 4 is taken out in the locating slot 222 of ring flange 2,, rotate, adjust the position of nut 1 with respect to ring flange 2 thereby drive manual dial 13 by swing stop 4.After adjustment finishes, decontrol steady arm 4, steady arm 4 is positioned in the locating slot 222 of ring flange 2 under the tension force effect of spring 5 the most automatically, finishes adjusting the location of nut 1.
Should be understood that above-mentioned description at preferred embodiment is comparatively concrete, can not therefore be interpreted as the restriction to scope of patent protection of the present utility model, its scope of patent protection should be as the criterion with claims.
Claims (6)
1, a kind of adjustable optical attenuator, it comprises ring flange and optical fiber receiver; Adjust nut; The optical fiber sleeve is characterized in that, described optical fiber sleeve is installed in the optical fiber receiver; Be provided with screw thread in the described adjustment nut, described adjustment nut is outside equipped with a manual dial, and a fiber adapter is installed; At the outer wall of optical fiber receiver, be provided with the helical pitch screw thread that cooperates with described adjustment nut; Outside second half optical fiber receiver of the opposite side of ring flange, another fiber adapter is installed in coaxial socket; Described helical pitch nut by with the helical pitch threaded engagement, be used to adjust and ring flange between distance, the optical fiber head that drives homonymy simultaneously moves.
2, adjustable optical attenuator according to claim 1 is characterized in that, indicates corresponding optical power attenuation value with respect to the position of described adjustment nut on described attenuator.
3, adjustable optical attenuator according to claim 2 is characterized in that, also is provided with dust guard in the described attenuator.
4, adjustable optical attenuator according to claim 3 is characterized in that, the dust-proof cushion of described dust guard for installing respectively at two ports.
5, adjustable optical attenuator according to claim 1, it is characterized in that, also comprise a steady arm, it is a cylinder, its inner wall sleeve is connected on the described manual dial, and this manual dial is provided with positioning tooth, with the mutual twisting of positioning tooth on the described steady arm inwall, and can horizontally slip mutually; The outer wall of described steady arm is provided with more fine and closely woven positioning tooth, be socketed in the circular locating slot on the described ring flange, and this locating slot inwall be parallel to the cylindrical shape steady arm axially, corresponding finer and closely woven positioning tooth is with the mutual twisting of the positioning tooth of steady arm outer wall.
6, adjustable optical attenuator according to claim 1, it is characterized in that, also be provided with a spring between described steady arm and the described manual dial, the one end is installed on the manual dial, the other end is installed on the steady arm, and its elastic restoring force is used for described steady arm is positioned in the locating slot of described ring flange automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620053817 CN2906650Y (en) | 2006-01-12 | 2006-01-12 | Adjustable optical attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620053817 CN2906650Y (en) | 2006-01-12 | 2006-01-12 | Adjustable optical attenuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2906650Y true CN2906650Y (en) | 2007-05-30 |
Family
ID=38115291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620053817 Expired - Lifetime CN2906650Y (en) | 2006-01-12 | 2006-01-12 | Adjustable optical attenuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2906650Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135180A (en) * | 2013-03-27 | 2013-06-05 | 武汉光迅科技股份有限公司 | High return loss connector with adjustable light attenuation |
| CN105159080A (en) * | 2015-08-31 | 2015-12-16 | 武汉光迅科技股份有限公司 | Variable optical attenuator control method and system based on automatic calibration and intelligent learning |
| CN105917260A (en) * | 2014-01-24 | 2016-08-31 | 奥林巴斯株式会社 | Optical fiber connection adapter and endoscope device |
| CN108549129A (en) * | 2018-06-13 | 2018-09-18 | 广州佳隆信息科技有限公司 | A kind of laser power precision regulating method and laser power precision regulator |
| CN115291344A (en) * | 2022-08-18 | 2022-11-04 | 武汉联特科技股份有限公司 | Optical module with adjustable attenuation |
-
2006
- 2006-01-12 CN CN 200620053817 patent/CN2906650Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135180A (en) * | 2013-03-27 | 2013-06-05 | 武汉光迅科技股份有限公司 | High return loss connector with adjustable light attenuation |
| CN103135180B (en) * | 2013-03-27 | 2014-12-31 | 武汉光迅科技股份有限公司 | High return loss connector with adjustable light attenuation |
| CN105917260A (en) * | 2014-01-24 | 2016-08-31 | 奥林巴斯株式会社 | Optical fiber connection adapter and endoscope device |
| CN105159080A (en) * | 2015-08-31 | 2015-12-16 | 武汉光迅科技股份有限公司 | Variable optical attenuator control method and system based on automatic calibration and intelligent learning |
| CN108549129A (en) * | 2018-06-13 | 2018-09-18 | 广州佳隆信息科技有限公司 | A kind of laser power precision regulating method and laser power precision regulator |
| CN115291344A (en) * | 2022-08-18 | 2022-11-04 | 武汉联特科技股份有限公司 | Optical module with adjustable attenuation |
| CN115291344B (en) * | 2022-08-18 | 2023-05-16 | 武汉联特科技股份有限公司 | Optical module with adjustable attenuation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070530 |
|
| EXPY | Termination of patent right or utility model |