CN104181639B - Easily-adjustable optical fiber attenuator - Google Patents
Easily-adjustable optical fiber attenuator Download PDFInfo
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- CN104181639B CN104181639B CN201410430331.9A CN201410430331A CN104181639B CN 104181639 B CN104181639 B CN 104181639B CN 201410430331 A CN201410430331 A CN 201410430331A CN 104181639 B CN104181639 B CN 104181639B
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- groove
- optical fiber
- guide groove
- top board
- cylinder
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- Optical Couplings Of Light Guides (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses an easily-adjustable optical fiber attenuator which comprises a casing, an optical fiber and a microbend deformer for bending the optical fiber. A groove for storing the optical fiber is formed in the casing, and the microbend deformer comprises an upper press plate with a corrugated surface arranged at the bottom and a lower corrugated surface positioned at the bottom of the groove and staggered with the corrugated surface of the upper press plate. The two inner groove walls of the groove are each provided with a first guide groove and a second guide groove symmetrical to the first guide groove, and an included angle formed by each first guide groove and the center axis of the optical fiber is identical to an included angle formed by each second guide groove and the center axis of the optical fiber. A first adjustment cylinder for adjusting the upper press plate is arranged between the first guide grooves, a second adjustment cylinder for adjusting the upper press plate is arranged between the second guide grooves, the length of the upper press plate is larger than that of the groove, limit strips are arranged at the two ends of the upper press plate, outside the groove, and scales for displaying the position of the upper press plate are arranged on the groove. The easily-adjustable optical fiber attenuator is stable in structure. In addition, the curvature of the optical fiber can be changed by sliding the first adjustment cylinder and the second adjustment cylinder, so that the easily-adjustable optical fiber attenuator is easy to operate.
Description
Technical field
A kind of the present invention relates to fibre optic attenuator field, in particular it relates to fibre optic attenuator that can easily be accommodated.
Background technology
Fibre optic attenuator is widely used passive device in optical communication field.For the decay to input optical power, keep away
Exempt from distortion that is superpower due to input optical power and making photoreceiver produce.Existing fibre optic attenuator, in order to realize continuously may be used
Adjust, employ the frame mode of Publication No. CN 1658023 A, it realizes the degree of crook of optical fiber using bent forming device, with
Realize the modulation to signal light intensity in optical fiber, to realize adjustable optical attenuation.Using the fibre optic attenuator of this structure, to micro-bend
When the distance of anamorphoser is adjusted, actuator need to be used, that is, adjust actuator make bent forming device along guide rail movement realize right
The regulation of distance, according to actual service condition, can realize actuator using the mode such as manual, motor, voltage, magnetic field, adopt
When manually, the adjusting rod of adapter is threaded, realizes the regulation of Light deformation device distance by rotation adjusting lever, behaviour
Work gets up cumbersome.
Content of the invention
The technical problem to be solved is to provide the fibre optic attenuator that can easily be accommodated, its Stability Analysis of Structures, slides the
One regulation cylinder and the second regulation cylinder can change the flexibility of optical fiber it is easy to adjust operation.
The present invention solves the above problems and be employed technical scheme comprise that：
The fibre optic attenuator that can easily be accommodated, including shell, optical fiber and the bent forming device that optical fiber is curved, described
Groove for placing optical fiber is provided with shell, described bent forming device include bottom be provided with corrugated surface top board and
The lower corrugated surface being staggered positioned at the corrugated surface of bottom portion of groove and top board, described two internal groove side walls of groove are provided with
First guide groove and second guide groove symmetrical with the first guide groove, the described axis of the first guide groove, the second guide groove and optical fiber
Angle is equal, is provided with the first regulation cylinder that top board is adjusted, described second leads between the first described guide groove
Be provided with the second regulation cylinder that top board is adjusted between groove, the length of described top board be more than groove length and
Top board is located at and is provided with positive stop strip on the two ends outside groove, and described groove is provided with for showing top board position
Rule.
The present invention realizes consistent with the principle of prior art to the principle of the regulation of fiber middle light signal intensity, that is, in regulation
Pressing plate and the flexibility of the distance between lower corrugated surface change optical fiber, realize the regulation to fiber middle light signal intensity, the company of realization
Continue adjustable optical attenuation.First regulation cylinder and second adjusts cylinder and can move along the first guide groove and the second guide groove respectively, due to
Described the first guide groove, the second guide groove equal with the angle of the axis of optical fiber so that the first guide groove and the second guide groove and optical fiber
Central shaft not parallel, that is, the first guide groove and the second guide groove not parallel with the central shaft of optical fiber when not bending so that the first regulation
Cylinder and second adjusts cylinder in the diverse location of the first guide groove and the second guide groove, achievable top board and lower corrugated surface away from
From regulation, you can realize the regulation of fibre-optical bending degree.First adjusts cylinder is only in optical fiber with the contact surface of top board
The straight line of heart axle, because top board has certain length, its fixation is unstable, adjusts cylinder and the first regulation using second
The cooperation of cylinder, is fixed to top board from the two ends of top board simultaneously, ensure that the stability of top board structure well,
The two ends making top board balance, and are not in the high situation of the aspect ratio other end of one end.In the first regulation circle to two ends
When post and the second regulation cylinder are adjusted, can observe using rule whether the two ends of top board are contour, i.e. top board
Two ends whether parallel stable, compared to the mode that shown of position to the first regulation cylinder and the second regulation cylinder, should
Mode is more direct, is more convenient for observing.Positive stop strip limits to the position of top board, it is to avoid the process moving up and down of top board
In first adjust cylinder and the second regulation cylinder drives lower edge groove mobile it is ensured that the corrugated surface of top board and lower corrugated surface
Staggering of position, that is, ensure that top board only moves in upper-lower position.Using the fibre optic attenuator of the present invention, it need to be adjusted to first
Pitch cylinder and the second regulation cylinder are rotated, you can change the flexibility of optical fiber, realize the tune to fiber middle light signal intensity
Section, realizes adjustable optical attenuation, it is not only simple in structure, and easily operated.
Preferably, the angle number of degrees between the first described guide groove and the central shaft of optical fiber are more than 10 degree and are less than 40
Degree.Fibre diameter is limited, and that is, top board is limited with the distance of lower corrugated surface, when the angle degree of the first guide groove and the central shaft of optical fiber
When number is too little, the degree of regulation of fibre optic attenuator is very high, i.e. the first top board when adjusting cylinder mobile a certain distance and groove
The distance change of bottom is very slow.But, when the angle number of degrees are less, the length of shell need more to grow so that first adjust cylinder and
Second adjusts distant between cylinder, and the interlude of top board easily upwarps, that is, take into account the length of shell and fibre optic attenuator
The angle of the central shaft of precision, the first guide groove and optical fiber in certain scope, that is, is more than 10 degree and is less than 40 degree.
Preferably, the angle number of degrees between the first described guide groove and the central shaft of optical fiber are 35 degree.
Further, for the ease of operating to the first regulation cylinder and the second regulation cylinder, described first regulation
It is provided with anti-skidding raised line on the arc surface of cylinder and the second regulation cylinder.
To sum up, the invention has the beneficial effects as follows：
1st, only the first regulation cylinder and the second regulation cylinder need to being rotated of the present invention, you can change the bending of optical fiber
Degree, realizes the regulation to fiber middle light signal intensity, it is not only simple in structure, and can easily be accommodated operation.
2nd, the present invention is shown it is ensured that the stability of top board structure using rule to the height at top board two ends,
Also allow for observing.
Brief description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of top board.
Labelling and corresponding parts title in accompanying drawing：1st, optical fiber；2nd, shell；21st, the first guide groove；22nd, the second guide groove；
23rd, rule；24th, lower corrugated surface；31st, the first regulation cylinder；32nd, the second regulation cylinder；4th, top board；41st, positive stop strip.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is made with detailed description further, but embodiments of the present invention
Not limited to this.
Embodiment 1：
The fibre optic attenuator that can easily be accommodated as depicted in figs. 1 and 2, be curved including shell 2, optical fiber 1 and to optical fiber 1
Bent forming device, described shell 2 is provided with the groove for placing optical fiber 1, described bent forming device includes bottom
It is provided with the top board 4 of corrugated surface and be located at the lower corrugated surface 24 that the corrugated surface of bottom portion of groove and top board 4 is staggered, described
First guide groove 21 and second guide groove 22 symmetrical with the first guide groove 21 be provided with two internal groove side walls of groove, described
One guide groove 21, the second guide groove 22 are equal with the angle of the axis of optical fiber 1, are provided with to upper pressure between the first described guide groove 21
The first regulation cylinder 31 that plate 4 is adjusted, is provided with, between the second described guide groove 22, second that top board 4 is adjusted
Adjust cylinder 32, the length of described top board 4 is more than the length of groove and top board 4 is located at and is respectively provided with the two ends outside groove
Limited location bar 41, described groove is provided with the rule 23 for showing top board 4 position.First adjusts cylinder can be the
Move in one guide groove 21, on first guide groove 21 inwall setting tooth can be utilized, two end faces of the first regulation cylinder are arranged
The gear matching with tooth, realizes adjusting movement in the first guide groove 21 for the cylinder.Second regulation cylinder 32 shifting principle with
First regulation cylinder is identical.
Embodiment 2：
The fibre optic attenuator that can easily be accommodated as depicted in figs. 1 and 2, in order to ensure the precision of fibre optic attenuator and shell
Length, the present embodiment optimizes on the basis of embodiment 1, i.e. angle between the first guide groove 21 and the central shaft of optical fiber 1
The number of degrees are more than 10 degree and are less than 40 degree.
Embodiment 3：
The fibre optic attenuator that can easily be accommodated as depicted in figs. 1 and 2, the present embodiment is preferred on the basis of embodiment 2
One group of data, that is, the angle number of degrees between the first guide groove 21 and the central shaft of optical fiber 1 be 35 degree.
Embodiment 4：
The fibre optic attenuator that can easily be accommodated as depicted in figs. 1 and 2, for the ease of adjusting cylinder 31 and the second tune to first
Pitch cylinder 32 is adjusted, and the arc surface of the first described regulation cylinder 31 and the second regulation cylinder 32 is provided with anti-skidding convex
Bar.Anti-skidding raised line increases handss and first and adjusts cylinder 31 and the second frictional force adjusting between cylinder 32, is easy to adjust to first
Cylinder 31 and the second regulation cylinder 32 are rotated.
As described above, the present invention can preferably be realized.
Claims (4)
1. the fibre optic attenuator that can easily be accommodated, including shell（2）, optical fiber（1）With to optical fiber（1）The bent forming being curved
Device it is characterised in that：Described shell（2）On be provided with for placing optical fiber（1）Groove, described bent forming device includes
Bottom is provided with the top board of corrugated surface（4）With positioned at bottom portion of groove and top board（4）The lower corrugated surface that is staggered of corrugated surface
（24）, described two internal groove side walls of groove are provided with the first guide groove（21）And with the first guide groove（21）Symmetrical second
Guide groove（22）, described the first guide groove（21）, the second guide groove（22）With optical fiber（1）Axis angle equal, described
One guide groove（21）Between be provided with to top board（4）The first regulation cylinder being adjusted（31）, described the second guide groove（22）
Between be provided with to top board（4）The second regulation cylinder being adjusted（32）, described top board（4）Length be more than groove
Length and top board（4）It is provided with positive stop strip on two ends outside groove（41）, described groove is provided with for
Display top board（4）The rule of position（23）, described first guide groove（21）With the second guide groove（22）Tooth is arranged on inwall, described
On two end faces of the first regulation cylinder and the second regulation cylinder, the gear being matched with tooth is set.
2. the fibre optic attenuator that can easily be accommodated according to claim 1 it is characterised in that：The first described guide groove（21）With
Optical fiber（1）Central shaft between the angle number of degrees be more than 10 degree and less than 40 degree.
3. the fibre optic attenuator that can easily be accommodated according to claim 2 it is characterised in that：The first described guide groove（21）With
Optical fiber（1）Central shaft between the angle number of degrees be 35 degree.
4. according to the arbitrary described fibre optic attenuator that can easily be accommodated of claims 1 to 3 it is characterised in that：The first described tune
Pitch cylinder（31）With the second regulation cylinder（32）Arc surface on be provided with anti-skidding raised line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410430331.9A CN104181639B (en) | 2014-08-28 | 2014-08-28 | Easily-adjustable optical fiber attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410430331.9A CN104181639B (en) | 2014-08-28 | 2014-08-28 | Easily-adjustable optical fiber attenuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104181639A CN104181639A (en) | 2014-12-03 |
| CN104181639B true CN104181639B (en) | 2017-02-15 |
Family
ID=51962822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410430331.9A Expired - Fee Related CN104181639B (en) | 2014-08-28 | 2014-08-28 | Easily-adjustable optical fiber attenuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104181639B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6628861B1 (en) * | 1999-01-06 | 2003-09-30 | General Photonics Corporation | Control of guided light in waveguide using external adjustable grating |
| CN1658023A (en) * | 2004-02-19 | 2005-08-24 | 郑毅 | Full fibre-optical light attenuator |
| CN204129260U (en) * | 2014-08-28 | 2015-01-28 | 成都美美通信技术有限公司 | A kind of fibre optic attenuator being easy to regulate |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3216066B2 (en) * | 1994-11-11 | 2001-10-09 | 昭和電線電纜株式会社 | Optical attenuator and manufacturing method thereof |
| US6580868B2 (en) * | 2001-03-19 | 2003-06-17 | Optiwork, Inc. | High-resolution variable optical attenuator with mechanical adjustment |
-
2014
- 2014-08-28 CN CN201410430331.9A patent/CN104181639B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6628861B1 (en) * | 1999-01-06 | 2003-09-30 | General Photonics Corporation | Control of guided light in waveguide using external adjustable grating |
| CN1658023A (en) * | 2004-02-19 | 2005-08-24 | 郑毅 | Full fibre-optical light attenuator |
| CN204129260U (en) * | 2014-08-28 | 2015-01-28 | 成都美美通信技术有限公司 | A kind of fibre optic attenuator being easy to regulate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104181639A (en) | 2014-12-03 |
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Granted publication date: 20170215 Termination date: 20200828 |