CN217404576U

CN217404576U - Optical fiber isolator for inhibiting optical loss

Info

Publication number: CN217404576U
Application number: CN202221245580.7U
Authority: CN
Inventors: 刘凤云
Original assignee: Wuhan Qitest Technology Co ltd
Current assignee: Wuhan Qitest Technology Co ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-09-09
Anticipated expiration: 2032-05-19

Abstract

The utility model provides a restrain optical loss's optical fiber isolator relates to optical fiber equipment technical field, including the isolator main part, the inside of isolator main part forms the isolator cavity, the one end of isolator main part once is equipped with isolation sleeve, end position sleeve and shielding sleeve, the other end of isolator main part once is equipped with output spacer, location end, output fiber head and main fiber, and the head of isolator, among the isolator cavity of entering isolator main part through input optical fiber splice, input spacer and output spacer in addition in the both sides of isolator cavity, final optic fibre is through outputting optical fiber head and main fiber output, because input spacer and output spacer also are the material of electric field, the two isolations in magnetic field and make, guarantee that optic fibre also avoids this type of influence in the inside transmission of isolator.

Description

Optical fiber isolator for inhibiting optical loss

Technical Field

The utility model relates to an optical fiber equipment technical field especially relates to a restrain optical loss's optical fiber isolator.

Background

The optical fiber isolator comprises a glass packaging tube, a first tail fiber capillary tube, a second tail fiber capillary tube, a first lens, a second lens and an optical rotation component, wherein the glass packaging tube is provided with a first end face and a second end face; the optical rotation assembly, the first lens and the second lens are all arranged in the glass packaging tube, and the first lens and the second lens are positioned on two sides of the optical rotation assembly and are fixed; first tail optical fiber capillary stretches into the first open end of glass encapsulation pipe and fixes, and the second tail optical fiber capillary stretches into the second open end of glass encapsulation pipe and fixes, the utility model discloses structurally reduce conventional collimater glass pipe after, reduced the glue film between collimater glass pipe and the capillary, improved the waterproof vapour permeability of device, improved the gas tightness, reduced because of the different, the uneven structural stress who brings of thickness of medium thermal expansion coefficient, made device overall stability, reliability improve.

When the optical fiber isolator and the existing optical fiber isolator are used, certain optical loss exists, part of information is lost due to the optical loss, and part of information is lost due to the optical loss, so that certain errors can be generated in transmitted information.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an optical fiber isolator for inhibiting optical loss.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the optical fiber isolator comprises an isolator main body, an isolator cavity is formed in the isolator main body, an isolation sleeve, an end positioning sleeve and a shielding sleeve are arranged at one end of the isolator main body at one time, and an output isolation sleeve, a positioning end, an output optical fiber head and a main optical fiber are arranged at the other end of the isolator main body at one time.

Preferably, the input optical fiber connector and the head end shielding sleeve are arranged at the coaxial position inside the isolation sleeve from inside to outside, the surface of the isolation sleeve is wrapped with metal tin, and the head end shielding sleeve is made of ferromagnetic materials.

Preferably, an output isolation sleeve and an input isolation sleeve are respectively arranged on two sides of the isolator cavity, the output isolation sleeve and the input isolation sleeve are both made of ferromagnetic materials, and the middle parts of the output isolation sleeve and the input isolation sleeve are embedded and communicated with metal tinfoil.

Preferably, the end positioning sleeve is made of a rubber material, grooves are uniformly formed in the surface of the end positioning sleeve, the end positioning sleeve is sleeved on the surface of the isolation sleeve, and a tin foil is covered and attached to the attachment surface of the end positioning sleeve and the attachment surface of the isolation sleeve.

Preferably, the positioning end head is formed by rubber injection, a through hole is formed in the middle of the positioning end head, the through hole and the output optical fiber head are sleeved and positioned, and the back face of the positioning end head and the end face of the output isolating sleeve are mutually fixed in an adhesive mode.

Preferably, the head end shielding sleeve is embedded in the inner hole of the isolation sleeve, the surface of the head end shielding sleeve is wrapped by tin foil, and the head end shielding sleeve and the input optical fiber connector are clamped and fixed with each other.

Preferably, the input optical fiber joint adopts a stepped socket, and spline grooves are uniformly formed in the inner surface of the stepped joint of the input optical fiber joint.

Advantageous effects

The utility model discloses in, among the head of isolator, the isolator cavity of isolator main part is got into through input fiber joint, input isolation sleeve and output isolation sleeve in addition in the both sides of isolator cavity, and final optic fibre is through output optical fiber head and main optical fiber output, because input isolation sleeve and output isolation sleeve also are the material of electric field, the two isolations in magnetic field and make, guarantee that optic fibre also avoids this type of influence in the inside transmission of isolator.

The utility model discloses in, the influence of electric field, magnetic field to the light path has all been avoided to the isolation sleeve, end position sleeve and the head end housing sleeve that increase, reduces the loss of light, also plays the isolation effect at the inside input spacer and the output spacer that add of isolator, reduces the information loss of the light of transmission.

Drawings

FIG. 1 is a main structure view of the present invention;

FIG. 2 is a schematic view of the reverse structure of the present invention;

fig. 3 is a front view of the present invention;

fig. 4 is a cross-sectional view of the present invention.

Illustration of the drawings:

1. an isolation sleeve; 2. an end positioning sleeve; 3. a shielding sleeve; 4. an isolator main body; 5. an output spacer sleeve; 6. positioning an end head; 7. an output fiber optic head; 8. a main optical fiber; 9. a head end shielding sleeve; 10. an input optical fiber connector; 11. inputting an isolation sleeve; 12. an isolator cavity.

Detailed Description

In order to make the technical means, creation features, achievement objects and functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

The specific embodiment is as follows:

referring to fig. 1-4, an optical fiber isolator for suppressing optical loss includes an isolator main body 4, an isolator cavity 12 is formed inside the isolator main body 4, an output spacer sleeve 5 and an input spacer sleeve 11 are respectively disposed on two sides of the isolator cavity 12, both the output spacer sleeve 5 and the input spacer sleeve 11 are made of ferromagnetic material, and the middle portions of the output spacer sleeve 5 and the input spacer sleeve 11 are embedded and communicated with a metallic tin foil, an isolation sleeve 1, an end positioning sleeve 2 and a shielding sleeve 3 are disposed at one end of the isolator main body 4 at one time, an input optical fiber connector 10 and a head end shielding sleeve 9 are disposed from inside to outside at coaxial positions inside the isolation sleeve 1, the head end shielding sleeve 9 is embedded in an inner hole of the isolation sleeve 1, a tin foil is wrapped on the surface of the head end shielding sleeve 9, the head end shielding sleeve 9 and the input optical fiber connector 10 are fixed to each other in a clamping manner, the input optical fiber connector 10 adopts a step-type socket, and the inner surface of the stepped joint of the input optical fiber joint 10 is uniformly provided with spline grooves, so that more stable splicing is ensured, the surface of the isolation sleeve 1 is wrapped with metallic tin, the head end shielding sleeve 9 is made of ferromagnetic material, the end positioning sleeve 2 is made of rubber material, and the surface of the end positioning sleeve 2 is uniformly provided with grooves, the end positioning sleeve 2 is sleeved on the surface of the isolation sleeve 1, the joint surface of the end positioning sleeve 2 and the isolation sleeve 1 is covered and jointed with tin foil, the other end of the isolator main body 4 is provided with an output isolation sleeve 5, a positioning end 6, an output optical fiber head 7 and a main optical fiber 8 at one time, the positioning end 6 is formed by rubber injection molding, and the middle part of the positioning end head 6 is provided with a through hole, the through hole is sleeved and positioned with the output optical fiber head 7, and the back surface of the positioning end head 6 and the end surface of the output isolation sleeve 5 are mutually fixed by gluing.

The utility model discloses a theory of operation: when the optical fiber isolator for inhibiting optical loss works, optical fibers are inserted into two ends of the isolator, an inlet end is inserted into an input optical fiber connector 10, laser is output through a main optical fiber 8 after passing through the isolator, after the optical fibers are inserted, an isolation sleeve 1 and a head end shielding sleeve 9 shield a magnetic field and an electric field which enter the optical fiber position, the optical fibers have the wave particle diagraphy and can be influenced by the magnetic field and the electric field, laser light can be deflected to a certain degree under the condition of a strong magnetic field or a strong electric field, so that information carried in the light generates errors and disorder of the information, the information distortion is caused, then the optical fibers pass through the head of the isolator and enter an isolator cavity 12 of an isolator main body 4 through the input optical fiber connector 10, and an input isolation sleeve 11 and an output isolation sleeve 5 are arranged on two sides of the isolator cavity 12, finally, the optical fiber is output through the output optical fiber head 7 and the main optical fiber 8, because the input isolation sleeve 11 and the output isolation sleeve 5 are also made of materials with double isolation of an electric field and a magnetic field, the optical fiber is ensured to avoid the influence when the optical fiber is transmitted in the isolator, because the finished optical fiber is not welded with a street and does not have the conversion of optical elements, the resistance to the electric field and the magnetic field is relatively strong, therefore, the input isolation sleeve 11 and the output isolation sleeve 5 are not connected together and are not arranged, the production and use cost is reduced to a certain extent, the maximum optical loss and the optical influence are both in the input position, therefore, in the design, the built-in input optical fiber joint 10 is adopted, the connection of the entering optical fiber can be more compact, the optical fiber loss caused by the traditional external connection is reduced, and meanwhile, the isolation sleeve 1, the end positioning sleeve 2 and the head end shielding sleeve 9 are added, the influence of an electric field and a magnetic field on a light path is avoided, the loss of light is reduced, the input isolation sleeve 11 and the output isolation sleeve 5 which are additionally arranged in the isolator also play a role in isolation, and the loss of transmitted light information is reduced.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A fiber optic isolator for suppressing optical loss, comprising an isolator body (4), the isolator body (4) having an isolator cavity (12) formed therein, characterized by: the one end of isolator main part (4) once is equipped with isolation sleeve (1), end position sleeve (2) and shielded sleeve (3), the other end of isolator main part (4) once is equipped with output isolation sleeve (5), location end (6), output optical fiber head (7) and main optical fiber (8), the inside coaxial position of isolation sleeve (1) is from inside to outside to be equipped with input optical fiber splice (10) and head end shielded sleeve (9), and the surface coating of isolation sleeve (1) has metallic tin, head end shielded sleeve (9) adopt ferromagnetic material to make and form, head end shielded sleeve (9) gomphosis is among the hole of isolation sleeve (1).

2. The optical fiber isolator for suppressing optical loss according to claim 1, wherein: the two sides of the isolator cavity (12) are respectively provided with an output isolation sleeve (5) and an input isolation sleeve (11), the output isolation sleeve (5) and the input isolation sleeve (11) are both made of ferromagnetic materials, and the middle parts of the output isolation sleeve (5) and the input isolation sleeve (11) are embedded and communicated with metal tinfoils.

3. The optical fiber isolator for suppressing optical loss according to claim 1, wherein: the end positioning sleeve (2) is made of rubber materials, grooves are uniformly formed in the surface of the end positioning sleeve (2), the end positioning sleeve (2) is sleeved on the surface of the isolation sleeve (1), and tin foils are covered and attached to the attachment surfaces of the end positioning sleeve (2) and the isolation sleeve (1).

4. The optical fiber isolator for suppressing optical loss according to claim 1, wherein: the positioning end head (6) is formed by rubber injection, a through hole is formed in the middle of the positioning end head (6), the through hole and the output optical fiber head (7) are sleeved and positioned, and the back of the positioning end head (6) and the end face of the output isolation sleeve (5) are fixed in a gluing mode.

5. The optical fiber isolator for suppressing optical loss according to claim 1, wherein: the surface of the head end shielding sleeve (9) is wrapped with tin foil, and the head end shielding sleeve (9) and the input optical fiber connector (10) are clamped and fixed with each other.

6. A fiber isolator for suppressing optical loss according to claim 1, wherein: the input optical fiber joint (10) adopts a stepped socket, and spline grooves are uniformly formed in the inner surface of the stepped joint of the input optical fiber joint (10).