CN104181639A - Easily-adjustable optical fiber attenuator - Google Patents
Easily-adjustable optical fiber attenuator Download PDFInfo
- Publication number
- CN104181639A CN104181639A CN201410430331.9A CN201410430331A CN104181639A CN 104181639 A CN104181639 A CN 104181639A CN 201410430331 A CN201410430331 A CN 201410430331A CN 104181639 A CN104181639 A CN 104181639A
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- China
- Prior art keywords
- optical fiber
- groove
- guide groove
- top board
- adjusting
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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
The present invention relates to fibre optic attenuator field, particularly, relate to a kind of fibre optic attenuator that is easy to adjusting.
Background technology
Fibre optic attenuator is widely used passive device in optical communication field.For the decay to input optical power, avoid the distortion that makes photoreceiver produce because input optical power is superpower.Existing fibre optic attenuator, adjustable in order to realize continuously, having adopted publication number is the frame mode of CN 1658023 A, it utilizes bent forming device to realize the degree of crook of optical fiber, to realize the modulation to signal light intensity in optical fiber, to realize adjustable optical attenuation.Adopt the fibre optic attenuator of this structure, when the distance of bent forming device is regulated, need to use regulator, regulate regulator to make bent forming device move and realize the adjusting of adjusting the distance along guide rail, according to actual service condition, can adopt manually, the mode such as motor, voltage, magnetic field realizes regulator, in the time adopting manual mode, on the adjuster bar of connector, screw thread is set, realizes the adjusting of micro-anamorphoser distance by rotation adjuster bar, very trouble operates.
Summary of the invention
Technical matters to be solved by this invention is to provide the fibre optic attenuator that is easy to adjusting, its Stability Analysis of Structures, and the first adjusting cylinder and second that slides regulates cylinder can change the flexibility of optical fiber, is easy to adjustment operation.
The present invention addresses the above problem adopted technical scheme:
Be easy to the fibre optic attenuator regulating, comprise shell, optical fiber and optical fiber is carried out to bending bent forming device, on described shell, be provided with the groove for placing optical fiber, described bent forming device comprises that bottom is provided with the top board of corrugated surface and is positioned at the lower corrugated surface that the corrugated surface of bottom portion of groove and top board is staggered, on two internal groove side walls of described groove, be provided with the first guide groove and second guide groove symmetrical with the first guide groove, the first described guide groove, the second guide groove equates with the angle of the axis of optical fiber, between the first described guide groove, be provided with the first adjusting cylinder that top board is adjusted, between the second described guide groove, be provided with the second adjusting cylinder that top board is adjusted, the length of described top board is greater than the length of groove and top board and is positioned on the two ends outside groove and is provided with positive stop strip, on described groove, be provided with the rule for showing top board position.
It is consistent that the present invention realizes the principle of adjusting and the principle of prior art to fiber middle light signal intensity, regulate the flexibility of the distance change optical fiber between top board and lower corrugated surface, realize the adjusting to fiber middle light signal intensity, realize continuously adjustable optical attenuation.First regulates cylinder and second to regulate cylinder can move along the first guide groove and the second guide groove respectively, because the first described guide groove, the second guide groove equate with the angle of the axis of optical fiber, make the central shaft of the first guide groove and the second guide groove and optical fiber not parallel, the first guide groove and the second guide groove central shaft of optical fiber when not bending is not parallel, make the first adjusting cylinder and second regulate cylinder in the time of the diverse location of the first guide groove and the second guide groove, the distance adjustment that can realize top board and lower corrugated surface, can realize the adjusting of fibre-optical bending degree.The surface of contact of the first adjusting cylinder and top board is only the straight line perpendicular to fiber optic hub axle, because top board has certain length, it is fixing unstable, utilize the second adjusting cylinder and first to regulate the cooperation of cylinder, top board is fixed from the two ends of top board simultaneously, well ensure the stability of top board structure, made the two ends balance of top board, there will not be the high situation of the aspect ratio other end of one end.In the time regulating cylinder and second to regulate cylinder to regulate to first of two ends, whether contourly utilize rule can observe the two ends of top board, whether the two ends that are top board are parallel stable, than the mode that the position of the first adjusting cylinder and the second adjusting cylinder is shown, which is more direct, the observation of being more convenient for.Positive stop strip limits the position of top board, avoid in the process moving up and down of top board moving along groove under the first adjusting cylinder and second regulates the drive of cylinder, ensure the corrugated surface of top board and staggering of lower corrugated surface position, ensure that top board only moves at upper-lower position.Adopt fibre optic attenuator of the present invention, it need regulate cylinder to rotate to the first adjusting cylinder and second, can change the flexibility of optical fiber, realize the adjusting to fiber middle light signal intensity, realize adjustable optical attenuation, it is not only simple in structure, and easy operating.
As preferably, the angle number of degrees between described the first guide groove and the central shaft of optical fiber are greater than 10 degree and are less than 40 degree.Fibre diameter is limited, the distance that is top board and lower corrugated surface is limited, when the angle number of degrees of the central shaft of the first guide groove and optical fiber too hour, the degree of regulation of fibre optic attenuator is very high, the change of distance of the first top board while regulating cylinder to move certain distance and bottom portion of groove is very slow.But, when the angle number of degrees less, the length of shell need to be longer, the first adjusting cylinder and second is regulated between cylinder distant, the interlude of top board easily upwarps, take into account the length of shell and the precision of fibre optic attenuator, the angle of the central shaft of the first guide groove and optical fiber, in certain scope, is greater than 10 degree and is less than 40 degree.
As preferably, the angle number of degrees between described the first guide groove and the central shaft of optical fiber are 35 degree.
Further, for the ease of regulating cylinder to operate to the first adjusting cylinder and second, on the first described adjusting cylinder and the arc surface of the second adjusting cylinder, be provided with anti-skidding raised line.
To sum up, the invention has the beneficial effects as follows:
1, of the present invention need regulate cylinder to rotate to the first adjusting cylinder and second, can change the flexibility of optical fiber, realizes the adjusting to fiber middle light signal intensity, and it is not only simple in structure, and is easy to adjustment operation.
2, the present invention utilizes rule to show the height at top board two ends, ensures the stability of top board structure, is also convenient to observation.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of top board.
Mark and corresponding parts title in accompanying drawing: 1, optical fiber; 2, shell; 21, the first guide groove; 22, the second guide groove; 23, rule; 24, lower corrugated surface; 31, first regulate cylinder; 32, second regulate cylinder; 4, top board; 41, positive stop strip.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is done to detailed description further, but embodiments of the present invention are not limited to this.
Embodiment 1:
The fibre optic attenuator that is easy to adjusting as depicted in figs. 1 and 2, comprise shell 2, optical fiber 1 and optical fiber 1 is carried out to bending bent forming device, on described shell 2, be provided with the groove for placing optical fiber 1, described bent forming device comprises that bottom is provided with the top board 4 of corrugated surface and is positioned at the lower corrugated surface 24 that the corrugated surface of bottom portion of groove and top board 4 is staggered, on two internal groove side walls of described groove, be provided with the first guide groove 21 and second guide groove 22 symmetrical with the first guide groove 21, the first described guide groove 21, the second guide groove 22 equates with the angle of the axis of optical fiber 1, between the first described guide groove 21, be provided with the first adjusting cylinder 31 that top board 4 is adjusted, between the second described guide groove 22, be provided with the second adjusting cylinder 32 that top board 4 is adjusted, the length of described top board 4 is greater than the length of groove and top board 4 and is positioned at and on the two ends outside groove, is provided with positive stop strip 41, on described groove, be provided with the rule 23 for showing top board 4 positions.First regulates cylinder in the interior movement of the first guide groove 21, can utilize on the first guide groove 21 inwalls tooth is set, and the gear matching with tooth is set on two end faces of the first adjusting cylinder, realizes and regulates the movement of cylinder in the first guide groove 21.Second regulates the shifting principle and first of cylinder 32 to regulate cylinder identical.
Embodiment 2:
The fibre optic attenuator that is easy to adjusting as depicted in figs. 1 and 2, in order to ensure the precision of fibre optic attenuator and the length of shell, the present embodiment is optimized on the basis of embodiment 1, and the angle number of degrees between the first guide groove 21 and the central shaft of optical fiber 1 are greater than 10 degree and are less than 40 degree.
Embodiment 3:
The fibre optic attenuator that being easy to as depicted in figs. 1 and 2 regulates, the present embodiment is preferred one group of data on the basis of embodiment 2, and the angle number of degrees between the first guide groove 21 and the central shaft of optical fiber 1 are 35 degree.
Embodiment 4:
The fibre optic attenuator that is easy to adjusting as depicted in figs. 1 and 2, for the ease of regulating cylinder 32 to regulate to the first adjusting cylinder 31 and second, is provided with anti-skidding raised line on the first described adjusting cylinder 31 and the arc surface of the second adjusting cylinder 32.Anti-skidding raised line increases hand and first and regulates cylinder 31 and the second friction force regulating between cylinder 32, is convenient to the first adjusting cylinder 31 and second to regulate cylinder 32 to rotate.
As mentioned above, can realize preferably the present invention.
Claims (4)
1. be easy to the fibre optic attenuator regulating, comprise shell (2), optical fiber (1) and optical fiber (1) is carried out to bending bent forming device, it is characterized in that: on described shell (2), be provided with the groove for placing optical fiber (1), described bent forming device comprises that bottom is provided with the top board (4) of corrugated surface and is positioned at bottom portion of groove and lower corrugated surface (24) that the corrugated surface of top board (4) is staggered, on two internal groove side walls of described groove, be provided with the first guide groove (21) and second guide groove (22) symmetrical with the first guide groove (21), described the first guide groove (21), the second guide groove (22) equates with the angle of the axis of optical fiber (1), between described the first guide groove (21), be provided with the first adjusting cylinder (31) that top board (4) is adjusted, between described the second guide groove (22), be provided with the second adjusting cylinder (32) that top board (4) is adjusted, the length of described top board (4) is greater than the length of groove and top board (4) and is positioned at and on the two ends outside groove, is provided with positive stop strip (41), on described groove, be provided with the rule (23) for showing top board (4) position.
2. the fibre optic attenuator that is easy to adjusting according to claim 1, is characterized in that: the angle number of degrees between described the first guide groove (21) and the central shaft of optical fiber (1) are greater than 10 degree and are less than 40 degree.
3. the fibre optic attenuator that is easy to adjusting according to claim 2, is characterized in that: the angle number of degrees between described the first guide groove (21) and the central shaft of optical fiber (1) are 35 degree.
4. according to the arbitrary described fibre optic attenuator that is easy to adjusting of claims 1 to 3, it is characterized in that: on the first described adjusting cylinder (31) and the arc surface of the second adjusting cylinder (32), 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 true CN104181639A (en) | 2014-12-03 |
| CN104181639B CN104181639B (en) | 2017-02-15 |
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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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08136735A (en) * | 1994-11-11 | 1996-05-31 | Showa Electric Wire & Cable Co Ltd | Light attenuator and its production |
| WO2002075398A1 (en) * | 2001-03-19 | 2002-09-26 | Optiwork, Inc. | High-resolution variable optical attenuator with mechanical adjustment |
| 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 |
-
2014
- 2014-08-28 CN CN201410430331.9A patent/CN104181639B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08136735A (en) * | 1994-11-11 | 1996-05-31 | Showa Electric Wire & Cable Co Ltd | Light attenuator and its production |
| US6628861B1 (en) * | 1999-01-06 | 2003-09-30 | General Photonics Corporation | Control of guided light in waveguide using external adjustable grating |
| WO2002075398A1 (en) * | 2001-03-19 | 2002-09-26 | Optiwork, Inc. | High-resolution variable optical attenuator with mechanical adjustment |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 靳伟等: "《光纤传感技术新进展》", 31 July 2005, 科学出版社 * |
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| Publication number | Publication date |
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| CN104181639B (en) | 2017-02-15 |
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