CN206920647U

CN206920647U - Non- circuit symmetric fiber with side identification mark

Info

Publication number: CN206920647U
Application number: CN201720778089.3U
Authority: CN
Inventors: 吴超; 王传兵; 居兰
Original assignee: NANJING JILONG OPTICAL COMMUNICATION CO Ltd
Current assignee: NANJING JILONG OPTICAL COMMUNICATION CO Ltd
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2018-01-23
Anticipated expiration: 2027-06-30

Abstract

The utility model discloses a kind of non-circuit symmetric fiber with side identification mark, including fibre core and covering, and covering outermost, which makes, side identification mark.Identification mark run through the non-circuit symmetric fiber of whole piece, by side it is observed that identification mark, is identified during to axle with this and labeled as datum mark to axle, substantially reduce to axle difficulty.

Description

Non- circuit symmetric fiber with side identification mark

Technical field

It the utility model is related to fiber optic communication field, the specifically non-circuit symmetric fiber with side identification mark.

Background technology

The technology of preparing of present optical fiber mainly has pipe rod technology, double crucible technique, sol-gel technique, outside vapor deposition Method (OVD), axial vapor deposition method (VAD), modified chemical vapor deposition process (MCVD) (MCVD), plasma activation chemical vapor deposition Area method (PCVD) etc., being related to special optical fiber also includes some other method.

But non-circuit symmetric fibers all at present, including polarization maintaining optical fibre, multi-core fiber, photonic crystal fiber and special type Optical fiber, it is difficult to find its difference from side.And in the handshaking procedure such as the welding of non-circuit symmetric fiber and cold joint, In view of mould field matching or the matching problem of polarization state, it is required to rotate it to a common cross-wise direction and is connect It is continuous.And these optical fiber is extremely complex to axle process, it is related to image recognition and processing, increases the complexity of structure and soft or hard The difficulty of part.

Publication No. CN 101156099A entitled " fiber optic collimator instrument system, optical fiber collimator array, fiber optic collimator The utility model of the manufacture method of instrument system and optical fiber collimator array system ", by fused fiber splice by containing from titanium dioxide Without using sticky material, light when being bonded Deng material as the grin lenses that the quartz glass of refractive index adjustment material is formed with optical fiber Learning characteristic will not deteriorate, and by the self-align effect of solvent heat, grin lenses and optical fiber can easy aligning.

Although above-mentioned aligning mode, can be very big by making the index distribution constant of grin lenses in appropriate scope Reduction coupling loss, avoid deterioration in optical properties, but with the continuous development of photoelectric technology, the application for special optical fiber More and more, wherein polarization maintaining optical fibre and photonic crystal are phased with its unique performance.But on polarization maintaining optical fibre and The welding of photonic crystal fiber, it is impossible to which welding is carried out using common aligning mode.Because polarization maintaining optical fibre and photonic crystal fiber There is its axially direction, when welding in addition to aligning to be carried out, also require that its axial angle will be also aligned, this Require to observe its side, and rotated with rolling clamp to axle.Polarization-maintaining heat sealing machine in the past, the side observed using side Method, but the regulation of previously used method is difficult, and different directions are imaged in, it is more complicated to axle principle.

Utility model content

In order to solve the problems, such as that prior art is present, the utility model provides a kind of with the not rounded right of side identification mark Claim optical fiber, be to make the identification through whole piece optical fiber on the outside of the covering of non-circuit symmetric fiber to mark, can be with by side It was observed that the identification marks, identified again with this labeled as datum line to axle, substantially reduce to axle difficulty afterwards.

The utility model adopts the following technical scheme that：With side identification mark non-circuit symmetric fiber, including fibre core and Covering, covering outermost, which makes, has identification to mark.

Described non-circuit symmetric fiber is polarization maintaining optical fibre, multi-core fiber, photonic crystal fiber or special optical fiber.

The shape of described identification mark can be square, semicircle, oval or triangle.

The material of described identification mark can be the refractive index material different from cladding index or and covering Color different coloring matter or coloured crystal.

The utility model is in the case of property during not influenceing optical fiber mode fields and laser transmission, in not rounded symmetrical beam Fine covering outermost makes an identification being observed from side, through whole piece optical fiber and marked, and identification mark can be with Realize in fiber manufacturing process, when optical fiber is to axle, as long as the identification mark on two optical fiber is corresponding upper, substantially reduce To axle difficulty.

Brief description of the drawings

Fig. 1 is the schematic diagram for the polarization maintaining optical fibre that embodiment one has side identification mark.

Fig. 2 is the schematic diagram for the multi-core fiber that embodiment two has side identification mark.

Fig. 3 is the schematic diagram for the photonic crystal fiber that embodiment three has side identification mark.

Fig. 4 is the schematic diagram for the special optical fiber that example IV has side identification mark.

Embodiment

Embodiment of the present utility model is described specifically below in conjunction with the accompanying drawings：

Embodiment one

Polarization maintaining optical fibre with side identification mark, as shown in figure 1, including fibre core 11, being arranged at the radius side of fibre core 11 A pair of the stress applying units 12 and encirclement fibre core 11 and the covering 13 of stress applying unit 12 outwards put, the outermost of covering 3, which makes, to be had The side identification mark 14 of ellipse, the material of described side identification mark 14 is coloured crystal.

Embodiment two

Multi-core fiber with side identification mark, as shown in Fig. 2 including seven fibre cores 21 and surrounding this seven fibre cores 21 Covering 23, the outermost of covering 23, which makes, semicircular side identification mark 24, and described side identification mark 24 is color The coloured plastics material different from the color of covering 23.

Embodiment three

Photonic crystal fiber with side identification mark, as shown in figure 3, including fibre core 31 and covering 33, in covering 33 Multiple airports 32, positive six deformation of these airports composition are provided with, described fibre core 31 is arranged at described regular hexagon Center, the outermost of covering 33 make the side identification mark 34 for having rectangle, and the refractive index of described side identification mark 34 is higher than The refractive index of covering 33.

Example IV

Special optical fiber with side identification mark, as shown in figure 4, including fibre core 41, interference inner cladding 42 and surrounding layer 43, interference inner cladding 42 is sandwiched between fibre core 41 and surrounding layer 43, and has the refractive index lower than fibre core 41 and surrounding layer 43, outside The outermost of covering 43 makes the side identification mark 44 for having triangle, and the refractive index of described side identification mark 44 is less than outsourcing The refractive index of layer 43.

Above-described is only several exemplary embodiments of the present utility model, it is noted that for the common of this area For technical staff, on the premise of the utility model principle is not departed from, some variations and modifications can also be made, such as at it Identification mark in side is made outside the covering of its non-circuit symmetric fiber (bow-tie type polarization maintaining optical fibre, octahedral bodily form special optical fiber etc.) Note, these also should be regarded as belonging to the scope of protection of the utility model.

Claims

1. the non-circuit symmetric fiber with side identification mark, including fibre core and covering, it is characterised in that：Covering outermost makes There is identification to mark.

2. the non-circuit symmetric fiber according to claim 1 with side identification mark, it is characterised in that：Described is not rounded Symmetric fiber is polarization maintaining optical fibre, multi-core fiber, photonic crystal fiber or special optical fiber.

3. the non-circuit symmetric fiber according to claim 1 or 2 with side identification mark, it is characterised in that：Described The shape of identification mark is square, semicircle, oval or triangle.

4. the non-circuit symmetric fiber according to claim 3 with side identification mark, it is characterised in that：Described identification The refractive index of mark is different from the refractive index of covering.

5. the non-circuit symmetric fiber according to claim 3 with side identification mark, it is characterised in that：Described identification The material of mark is the coloring matters different from covering color.

6. the non-circuit symmetric fiber according to claim 5 with side identification mark, it is characterised in that：Described is coloured Material is coloured crystal.