CN203786322U - Optical fiber array used for polarization maintaining optical fiber - Google Patents
Optical fiber array used for polarization maintaining optical fiber Download PDFInfo
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- CN203786322U CN203786322U CN201420173298.1U CN201420173298U CN203786322U CN 203786322 U CN203786322 U CN 203786322U CN 201420173298 U CN201420173298 U CN 201420173298U CN 203786322 U CN203786322 U CN 203786322U
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- cover plate
- type groove
- polarization maintaining
- optical fiber
- base plate
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Abstract
The utility model discloses an optical fiber array used for a polarization maintaining optical fiber, and the optical fiber array belongs to the field of photoelectronic devices. The optical fiber array comprises a cover plate (11) and a bottom plate (21) arranged below the cover plate (21), wherein the lower surface of the cover plate (11) is provided with a cover plate V-shaped groove (111) which traverses the cover plate (11), the upper surface of the cover plate (21) is provided with a bottom plate V-shaped groove (211) which traverses the bottom plate (21), the cover plate V-shaped groove (111) corresponds to the bottom plate V-shaped groove (211) vertically to form a through hole, a polarization maintaining optical fiber (32) is arranged in the through hole, an included angle alpha1 of the cover plate V-shaped groove (111) equals to an included angle alpha2 of the bottom plate V-shaped groove (211), and the alpha 1 and the alpha 2 are within a range of 90+/-0.5 degrees. The optical fiber array scientifically defines the angle of the V-shaped grooves of the cover plate and the bottom plate, so that stresses applied to the polarization maintaining optical fiber pigtail are symmetric, and the application points are centralized at the center of the polarization maintaining optical fiber, the extinction ratio of the polarization maintaining optical fiber is effectively enhanced, and the transmission quality and stability of the polarization maintaining optical fiber are enhanced.
Description
Technical field
The utility model relates to field of optoelectronic devices, is specifically related to a kind of fiber array for polarization maintaining optical fibre.
Background technology
Fiber array is a kind of for laying the device of the tail optical fiber of optical fiber, and it is widely used on optical fibre device.Existing fiber array consists of cover plate 1, base plate 2, and base plate 2 is provided with the V-type groove of fixed fiber 31, and the side cover plate face contacting with optical fiber 31 is plane, covers above optical fiber 31, as shown in Figure 1.Polarization maintaining optical fibre is mainly used in transmission line polarized light, generally be applied to polarization state than in more sensitive application, as interferometer, or laser instrument, or be used in being connected between light source and external modulator etc., according to its stressed zone difference, can be divided into panda type, buttferfly-type (claiming again bow-tie type), ellipse covering etc.What on market, commonly use is panda type polarization-preserving fiber, its end view drawing picture, as shown in Figure 2.When fiber array is applied to panda type polarization-preserving fiber 32, existence due to panda eye 321, the collocation design structure of the V-type groove of the plane of cover plate face and base plate, as shown in Figure 3, cause the stress acting on polarization maintaining optical fibre asymmetric, stress concentration point departs from polarization maintaining optical fibre center, as shown in Figure 4, cause the extinction ratio of polarization maintaining optical fibre to reduce, affect the transmission quality of optical fiber; In addition, under the effect of stress, the angle of the slow axis 322 of polarization maintaining optical fibre 32 can be along with the variation of the temperature of fiber array environment of living in and is changed, thereby makes the temperature stability variation of polarization maintaining optical fibre 32, affects equally the transmission quality of optical fiber.
Utility model content
The purpose of this utility model is to overcome the deficiency of existing fiber array structure, provides a kind of and improves the extinction ratio of polarization maintaining optical fibre, the fiber array for polarization maintaining optical fibre of the temperature stability of assurance polarization maintaining optical fibre.
The purpose of this utility model is achieved in that
A kind of fiber array for polarization maintaining optical fibre of the utility model, comprise cover plate and be arranged at the base plate under cover plate, described cover plate and base plate are fixing up and down by bonding agent, the lower surface of described cover plate is offered the cover plate V-type groove that traverses cover plate, described cover plate V-type groove angle is α 1, the degree of depth is h1, the upper surface of described base plate is offered the base plate V-type groove that traverses base plate, described base plate V-type groove angle is α 2, the degree of depth is h2, described cover plate V-type groove and upper and lower corresponding formation one through hole of base plate V-type groove, described polarization maintaining optical fibre is arranged in described through hole, described cover plate V-type groove angle α 1 equates with the angle α 2 of base plate V-type groove, and α 1, the angular range of α 2 is 90 degree ± 0.5 degree.
The angle α 1 of cover plate V-type groove described in the utility model and the angle α 2 of base plate V-type groove are 90 degree.
The radius R of polarization maintaining optical fibre described in the utility model, the degree of depth h1 of described cover plate V-type groove≤
r, the degree of depth h2 of described base plate V-type groove≤
r.
Further, the degree of depth h1 of described cover plate V-type groove equates with the degree of depth h2 of described base plate V-type groove.
Cover plate V-type groove described in the utility model and base plate V-type groove have two pairs at least.
Further, described cover plate V-type groove and base plate V-type groove have two pairs or four pairs.
The adjacent surface of cover plate described in the utility model and described base plate is Mirror Symmetry.
the beneficial effects of the utility model are:
The utility model adopts technique scheme, and the stress that can make fiber array act on polarization maintaining optical fibre is symmetrical, and application point concentrates on polarization maintaining optical fibre center, thereby has effectively improved the extinction ratio of polarization maintaining optical fibre, has improved the transmission quality of optical fiber; Simultaneously, under the effect of the stress symmetric of fiber array, the angle of the slow axis of polarization maintaining optical fibre can be along with the variation of the temperature of fiber array environment of living in and is changed, the effect that the angle direction of the slow axis of polarization maintaining optical fibre is subject to variation of ambient temperature reduces, and has strengthened the stability of polarization maintaining optical fibre transmission quality.
Accompanying drawing explanation
Fig. 1 is the fiber array diagrammatic cross-section of existing fiber;
Fig. 2 is the end view drawing picture of panda type polarization-preserving fiber;
Fig. 3 is the diagrammatic cross-section of panda type polarization-preserving fiber in fiber array;
Fig. 4 is the force analysis schematic diagram of the amplification of the local I of panda type polarization-preserving fiber in fiber array;
Fig. 5 is the diagrammatic cross-section that is applied to the fiber array of panda type polarization-preserving fiber of the present utility model;
Fig. 6 is the enlarged diagram of the local II of Fig. 5;
Fig. 7 is the diagrammatic cross-section of embodiment of the present utility model;
Wherein:
Cover plate 11
Cover plate V-type groove 111
Base plate 21
Base plate V-type groove 211
Polarization maintaining optical fibre 32
Bonding agent 41.
Embodiment
Below in conjunction with accompanying drawing, take panda type polarization-preserving fiber as example, the technical solution of the utility model is elaborated:
Embodiment mono-
As shown in Figure 5 and Figure 6, a kind of fiber array for polarization maintaining optical fibre of the utility model, it comprises cover plate 11 and is arranged at the base plate 21 under cover plate 11, cover plate 11 is fixing up and down by bonding agent 41 with base plate 21.The lower surface of cover plate 11 is offered the cover plate V-type groove 111 that traverses cover plate 11, and cover plate V-type groove 111 angles are that α 1, the degree of depth are h1; The upper surface of base plate 21 is offered the base plate V-type groove 211 that traverses base plate 21, and base plate V-type groove 211 angles are that α 2, the degree of depth are h2.Cover plate V-type groove 111 and base plate V-type groove corresponding formation one through hole Shang Xia 211, polarization maintaining optical fibre 32 is arranged in this through hole.For making to act on the stress symmetry on polarization maintaining optical fibre 32, stress concentration point concentrates on polarization maintaining optical fibre center, cover plate V-type groove 111 angle α 1 equate with the angle α 2 of base plate V-type groove 211, and the angular range of α 1, α 2 is 90 degree ± 0.5 degree, and take the angle α 1 of cover plate V-type groove 111 and be 90 degree as good with the angle α 2 of base plate V-type groove 211; The radius R of polarization maintaining optical fibre 32, the degree of depth h1 of cover plate V-type groove 111≤
r, the degree of depth h2 of base plate V-type groove 211≤
r, and take the degree of depth h1 of cover plate V-type groove 111 and equate as good with the degree of depth h2 of base plate V-type groove 211.Especially, cover plate 11 is Mirror Symmetry with the adjacent surface of base plate 21, and now the angle of cover plate V-type groove 111 and base plate V-type groove 211 and the degree of depth all equate.
In figure, shown one of application mode of fiber array: fiber array is provided with two pairs of cover plate V-type grooves 111 and base plate V-type groove 211, in one of two through holes that form, can place a polarization maintaining optical fibre, also can place a branch of polarization maintaining optical fibre, in another through hole, place an ordinary optic fibre, also can place a branch of ordinary optic fibre, mainly play reference role.Be positioned over the cover plate V-type groove 111 of right angle or approximate right angle and the polarization maintaining optical fibre 32 in base plate V-type groove 211, cover plate 11 is symmetrical with the stress of the four direction of 21 pairs of polarization maintaining optical fibres of base plate, 32 effects, application point concentrates on polarization maintaining optical fibre center, thereby effectively improved the extinction ratio of polarization maintaining optical fibre, improved the transmission quality of optical fiber; Meanwhile, under the effect of stress symmetric, guaranteed the temperature stability of polarization maintaining optical fibre 32, the angle of the slow axis 322 of polarization maintaining optical fibre 32 can be along with the variation of the temperature of fiber array environment of living in and is changed, and has strengthened the stability of polarization maintaining optical fibre transmission quality.
Embodiment bis-
In this embodiment, cover plate V-type groove 111 is identical with base plate V-type groove 211 design and implementation examples one, as shown in Figure 7, its difference is: cover plate V-type groove 111 and base plate V-type groove 211 are provided with four pairs, place respectively three polarization maintaining optical fibres and an ordinary optic fibre, ordinary optic fibre is generally placed in a side of polarization maintaining optical fibre, mainly plays reference optical fiber, further to improve the transmission quality of optical fiber.
A kind of fiber array for polarization maintaining optical fibre of the present utility model is not limited to the above-mentioned preferred embodiment for panda type polarization-preserving fiber; bow-tie type polarization maintaining optical fibre and ellipse covering polarization maintaining optical fibre all can adopt above-mentioned fiber array; therefore; any those skilled in the art are not within departing from spirit and scope of the present utility model; any modification, equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all fall in the protection domain that the utility model claim defines.
Claims (7)
1. for a fiber array for polarization maintaining optical fibre, comprise cover plate (11) and be arranged at the base plate (21) under cover plate (11), described cover plate (11) is fixing up and down by bonding agent (41) with base plate (21),
It is characterized in that: the lower surface of described cover plate (11) is offered the cover plate V-type groove (111) that traverses cover plate (11), described cover plate V-type groove (111) angle is α 1, the degree of depth is h1, the upper surface of described base plate (21) is offered the base plate V-type groove (211) that traverses base plate (21), described base plate V-type groove (211) angle is α 2, the degree of depth is h2, described cover plate V-type groove (111) and upper and lower corresponding formation one through hole of base plate V-type groove (211), described polarization maintaining optical fibre (32) is arranged in described through hole, described cover plate V-type groove (111) angle α 1 equates with the angle α 2 of base plate V-type groove (211), and α 1, the angular range of α 2 is 90 degree ± 0.5 degree.
2. fiber array according to claim 1, is characterized in that: the angle α 1 of described cover plate V-type groove (111) and the angle α 2 of base plate V-type groove (211) are 90 degree.
3. fiber array according to claim 1, is characterized in that: the radius R of described polarization maintaining optical fibre (32), and the degree of depth h1 of described cover plate V-type groove (111)≤
r, the degree of depth h2 of described base plate V-type groove (211)≤
r.
4. fiber array according to claim 3, is characterized in that: the degree of depth h1 of described cover plate V-type groove (111) equates with the degree of depth h2 of described base plate V-type groove (211).
5. fiber array according to claim 1, is characterized in that: described cover plate V-type groove (111) and base plate V-type groove (211) have two pairs at least.
6. fiber array according to claim 5, is characterized in that: described cover plate V-type groove (111) and base plate V-type groove (211) have two pairs or four pairs.
7. according to the fiber array described in any one in claim 1 to 6, it is characterized in that: described cover plate (11) is Mirror Symmetry with the adjacent surface of described base plate (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173298.1U CN203786322U (en) | 2014-04-11 | 2014-04-11 | Optical fiber array used for polarization maintaining optical fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173298.1U CN203786322U (en) | 2014-04-11 | 2014-04-11 | Optical fiber array used for polarization maintaining optical fiber |
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| Publication Number | Publication Date |
|---|---|
| CN203786322U true CN203786322U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420173298.1U Expired - Fee Related CN203786322U (en) | 2014-04-11 | 2014-04-11 | Optical fiber array used for polarization maintaining optical fiber |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068182A (en) * | 2015-08-03 | 2015-11-18 | 深圳加华微捷科技有限公司 | Polarized light transmission device with high polarization maintaining performance |
| CN105866880A (en) * | 2016-06-14 | 2016-08-17 | 烽火通信科技股份有限公司 | Preparation method of polarization-maintaining optical fibers |
| CN109633828A (en) * | 2019-02-21 | 2019-04-16 | 浙江富春江光电科技有限公司 | A kind of mounting structure of multi-core optical fiber array |
-
2014
- 2014-04-11 CN CN201420173298.1U patent/CN203786322U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068182A (en) * | 2015-08-03 | 2015-11-18 | 深圳加华微捷科技有限公司 | Polarized light transmission device with high polarization maintaining performance |
| CN105866880A (en) * | 2016-06-14 | 2016-08-17 | 烽火通信科技股份有限公司 | Preparation method of polarization-maintaining optical fibers |
| CN105866880B (en) * | 2016-06-14 | 2018-12-28 | 烽火通信科技股份有限公司 | A kind of preparation method of polarization maintaining optical fibre |
| CN109633828A (en) * | 2019-02-21 | 2019-04-16 | 浙江富春江光电科技有限公司 | A kind of mounting structure of multi-core optical fiber array |
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| 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: 20140820 Termination date: 20150411 |
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| EXPY | Termination of patent right or utility model |