CN204650017U - Be convenient to the twin-core polarization maintaining optical fibre of coiling - Google Patents
Be convenient to the twin-core polarization maintaining optical fibre of coiling Download PDFInfo
- Publication number
- CN204650017U CN204650017U CN201520155841.XU CN201520155841U CN204650017U CN 204650017 U CN204650017 U CN 204650017U CN 201520155841 U CN201520155841 U CN 201520155841U CN 204650017 U CN204650017 U CN 204650017U
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- fibre
- core
- polarization maintaining
- maintaining optical
- twin
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Abstract
The utility model discloses the twin-core polarization maintaining optical fibre being convenient to coiling, comprise the inclined fibre core of the identical guarantor of two root architectures, protecting inclined fibre core for two is wrapped in two inner claddings respectively, and two inner claddings are wrapped in a surrounding layer, and two are provided with packed layer between inner cladding and surrounding layer; Protect the integral side by side and direction, stressed zone of the fibre-optic waveguide of two polarization maintaining optical fibres of inclined fibre core and also column direction is consistent for two; On the xsect of optical fiber, described surrounding layer is formed in being combined by a rectangle and two semicircles, described rectangular two long limits with two protects inclined fibre core also column direction is parallel, described two inclined fibre cores of guarantor lay respectively at the circle centre position of two semicircles.The utility model is by arranging the surrounding layer of flat pattern, solve the torsion of the uncontrollable optical fiber of polarization maintaining optical fibre of circular configuration, cause the problem reducing optical fibre gyro stability, the design of twin-core simultaneously can make full use of space, is applicable to Miniature optical fiber integrated device.
Description
Technical field
The utility model relates to polarization maintaining optical fibre, particularly relates to the twin-core polarization maintaining optical fibre being convenient to coiling.
Background technology
Polarization maintaining optical fibre is a class of special optical fiber.Polarization maintaining optical fibre, i.e. polarization-maintaining fiber, be a type optical fiber with the linear polarization keeping institute's transmission ray, it is widely used in fibre optic gyroscope.In common communications optical fiber, due to its circular symmetry structure, incident linearly polarized light is after the transmission of certain distance, and due to the coupling of different polarization pattern, energy exchange, can become oval or circularly polarized light and cannot retention wire polarization state.And when a linearly polarized light is coupled into polarization maintaining optical fibre, if the polarization principal axis of the polarization direction of linearly polarized light and polarization maintaining optical fibre overlaps, then linearly polarized light can keep its linear polarization until leave polarization maintaining optical fibre in transmitting procedure, i.e. the birefringent phenomenon of polarization maintaining optical fibre.
The xsect of existing use polarization maintaining optical fibre is mostly circular configuration, namely the fibre core of optical fiber and covering are Rotational Symmetry circular waveguide, in the winding process of polarization-maintaining fiber coil, twist if be wound optical fiber, understand the Faraday effect because earth magnetism cause and bring zero inclined error to optical fibre gyro; In addition in the application of ask for something miniaturization, the polarization maintaining optical fibre of existing use is mostly single core, and space utilization degree is low, is unfavorable for the integrated of Miniature optical fiber device.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of twin-core polarization maintaining optical fibre being convenient to coiling, solve the torsion of the uncontrollable optical fiber of polarization maintaining optical fibre of circular configuration, cause the problem reducing optical fibre gyro stability, be also applicable to the integrated of Miniature optical fiber device simultaneously.
In order to achieve the above object, the utility model is by the following technical solutions:
Be convenient to the twin-core polarization maintaining optical fibre of coiling, comprise the inclined fibre core of the identical guarantor of two root architectures, protect inclined fibre core for two and be wrapped in two inner claddings respectively, two inner claddings are wrapped in a surrounding layer, and two are provided with packed layer between inner cladding and surrounding layer; Protect the integral side by side and direction, stressed zone of the fibre-optic waveguide of two polarization maintaining optical fibres of inclined fibre core and also column direction is consistent for two; On the xsect of optical fiber, described surrounding layer is formed in being combined by a rectangle and two semicircles, described rectangular two long limits with two protects inclined fibre core also column direction is parallel, described two inclined fibre cores of guarantor lay respectively at the circle centre position of two semicircles.
Further, described polarization maintaining optical fibre is panda type polarization-preserving fiber or bow-tie type polarization maintaining optical fibre.
In fiber-optics gyroscope field, when the optical fiber loop using polarization maintaining optical fibre to make as sensing head, require that the winding position of polarization maintaining optical fibre and tension force control accurately, do not allow optical fiber in winding, occur the phenomenon reversed, and general employing four pole winding winding optical fiber rings, this uses the twin-core polarization maintaining optical fibre being convenient to coiling of novel proposition, and because outer shape is pancake structure, the situation therefore can eliminating optic fibre turning in ring winding process occurs.
The utility model entirety is pancake structure, can ensure optical fiber loop often between circle and between layers position accurately control, and avoid cylindrical fiber to be wound around the cross-lapping point occurred, can control more accurately optical fiber position and around fine tension force; And employing twin-core structure, therefore need the fiber lengths of coiling can reduce half relative to the polarization maintaining optical fibre of single waveguiding structure, take full advantage of space, be applicable to Miniature optical fiber integrated device.
The beneficial effects of the utility model are: by arranging the surrounding layer of flat pattern, and the situation can eliminating optic fibre turning in ring winding process occurs, the design of twin-core simultaneously can make full use of space, is applicable to Miniature optical fiber integrated device.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the schematic cross-section of optical fiber described in the utility model;
In figure: 1-fibre core; 2-stressed zone; 3-inner cladding; 4-packed layer; 5-surrounding layer.
Embodiment
Below by embodiment, the utility model will be further described by reference to the accompanying drawings.
As shown in Figure 1, be convenient to the twin-core polarization maintaining optical fibre of coiling, comprise the inclined fibre core 1 of the inclined fibre core of the identical guarantor of two root architectures 1, two guarantor and be wrapped in two inner claddings 3 respectively, two inner claddings 3 are wrapped in a surrounding layer 5, are provided with packed layer 4 between two inner claddings 3 and surrounding layer 5; Protect the integral side by side and direction, stressed zone 2 of the fibre-optic waveguide of two polarization maintaining optical fibres 1 of inclined fibre core 1 and also column direction is consistent for two; As shown in Figure 2, on the xsect of optical fiber, described surrounding layer 5 is formed in being combined by a rectangle and two semicircles, described rectangular two long limits with two protects inclined fibre core 1 also column direction is parallel, described two inclined fibre cores 1 of guarantor lay respectively at the circle centre position of two semicircles.
Described polarization maintaining optical fibre is panda type polarization-preserving fiber or bow-tie type polarization maintaining optical fibre.
The utility model when be used for the polarization maintaining optical fibre of the optical fiber loop making sensing head in optical fibre gyro time, because outer shape is pancake structure, the situation therefore can eliminating optic fibre turning in ring winding process occurs; On the other hand, the utility model entirety is pancake structure, can ensure optical fiber loop often between circle and between layers position accurately control, and avoid cylindrical fiber to be wound around the cross-lapping point occurred, can control more accurately optical fiber position and around fine tension force; And employing twin-core structure, therefore need the fiber lengths of coiling can reduce half relative to the polarization maintaining optical fibre of single waveguiding structure, take full advantage of space, be applicable to Miniature optical fiber integrated device.
Claims (2)
1. be convenient to the twin-core polarization maintaining optical fibre of coiling, comprise the inclined fibre core of the identical guarantor of two root architectures, protect inclined fibre core for two and be wrapped in two inner claddings respectively, two inner claddings are wrapped in a surrounding layer, and two are provided with packed layer between inner cladding and surrounding layer; Protect the integral side by side and direction, stressed zone of the fibre-optic waveguide of two polarization maintaining optical fibres of inclined fibre core and also column direction is consistent for two, it is characterized in that: on the xsect of optical fiber, described surrounding layer is formed in being combined by a rectangle and two semicircles, described rectangular two long limits with two protect inclined fibre core and column direction is parallel, protect the circle centre position that inclined fibre cores lay respectively at two semicircles for described two.
2. the twin-core polarization maintaining optical fibre being convenient to coiling according to claim 1, is characterized in that: described polarization maintaining optical fibre is panda type polarization-preserving fiber or bow-tie type polarization maintaining optical fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520155841.XU CN204650017U (en) | 2015-03-19 | 2015-03-19 | Be convenient to the twin-core polarization maintaining optical fibre of coiling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520155841.XU CN204650017U (en) | 2015-03-19 | 2015-03-19 | Be convenient to the twin-core polarization maintaining optical fibre of coiling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204650017U true CN204650017U (en) | 2015-09-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520155841.XU Expired - Fee Related CN204650017U (en) | 2015-03-19 | 2015-03-19 | Be convenient to the twin-core polarization maintaining optical fibre of coiling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204650017U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849801A (en) * | 2015-03-19 | 2015-08-19 | 姚小兵 | Double-core polarization maintaining fiber facilitating winding |
-
2015
- 2015-03-19 CN CN201520155841.XU patent/CN204650017U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849801A (en) * | 2015-03-19 | 2015-08-19 | 姚小兵 | Double-core polarization maintaining fiber facilitating winding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150916 Termination date: 20160319 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |