CN210626714U

CN210626714U - Low-cost adaptation isolator of chip dislocation

Info

Publication number: CN210626714U
Application number: CN201921813094.9U
Authority: CN
Inventors: 高永涛; 苏涛; 苗长河
Original assignee: Siny Optic Com Co ltd
Current assignee: Siny Optic Com Co ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-05-26
Anticipated expiration: 2029-10-28

Abstract

The utility model relates to an optical fiber communication technical field discloses a low-cost adaptation isolator of chip dislocation, including lock pin and PGP chip, the top of lock pin is equipped with the inclined plane, the inclined plane is contained angle X with the adapter reflection angle that the lock pin cross section formed, contained angle X's angle is 2 ~ 8, PGP chip bottom surface includes two first sides and two second sides, the perpendicular distance between the mid point of two first sides and its relative lock pin edge is L1 and L2 respectively, L1 and L2 equal, the perpendicular distance between the mid point that is located the second side of low position and its relative lock pin edge is L3, the perpendicular distance between the mid point that is located the second side of eminence and its relative lock pin edge is L4, L3 is 0.08mm ~0.25mm with L4's difference. The utility model discloses reduced the size of PGP chip, cost reduction is about 30%, has practiced thrift the resource, and the product is more competitive under market economy.

Description

Low-cost adaptation isolator of chip dislocation

Technical Field

The utility model relates to an optical fiber communication technical field especially relates to a low-cost adaptation isolator of chip dislocation.

Background

The current market of isolators and adapters are sold separately, and after being purchased by a customer, the isolators and the adapters are assembled into a semi-finished product, and then the semi-finished product flows into the next coupling welding procedure to be manufactured into a TOSA (transmitter optical subassembly), or the adapters and the isolators are pasted together by a supplier and sent to the customer. However, both of these approaches have the following disadvantages: firstly, the minimum light through hole of the adaptive isolator can only be 0.5mm, and a product smaller than the minimum light through hole has poor coupling in a certain proportion, so that the manufacturing cost cannot be reduced; second, the return loss index is low, and because of the structural characteristics, the return loss index is about 30dB and cannot meet the general requirement of more than 40dB, so that the coupling power cannot be improved; thirdly, the reliability is low, and there is the gap between adapter lock pin and the isolator PGP chip, easily receives the pollution of steam etc. and causes the product to become invalid.

Because light is refracted when propagating in different media, the light is refracted when passing through the isolator, and the light path is shifted, the PGP chip is directly attached to the upper end face (the upper end face is an inclined face) of the ferrule in the prior art, through a coupling test, the minimum size of the PGP chip can be 0.5mm, at this time, the light is shifted to just reach but not exceed the light passing face of the chip (see fig. 1), the PGP chip 1 is attached to the center of the ferrule 2, the distances from each edge of the PGP chip 1 to the edge of the ferrule 2 are respectively L1, L2, L3 and L4 (see fig. 2), wherein L1= L2 and L3= L4, the light is propagated on the PGP chip, and is exactly stuck to the edge of the PGP chip, and if the size of the PGP chip is continuously reduced, the light power loss occurs (see fig. 3).

With the increasing maturity of market technology and the increasing demand for low-cost products, the market price pressure is increasing, the existing adaptive isolator slowly loses advantages, which requires us to propose a new design scheme to reduce the cost, while the cost of the integrated isolator mainly comes from the chip, which requires us to reduce the size of the PGP chip and simultaneously avoid the optical power loss caused by the reduction of the chip size.

SUMMERY OF THE UTILITY MODEL

In order to solve the prior technical problem, the utility model provides a low-cost adaptation isolator of chip dislocation.

In order to achieve the above object, the utility model provides a following technical scheme: a low-cost adaptive isolator with chip dislocation comprises an inserting core and a PGP chip, wherein the top end of the inserting core is provided with an inclined plane, the reflecting angle of the adapter formed by the inclined plane and the cross section of the ferrule is an included angle X, the angle of the included angle X is 2-8 degrees, the PGP chip is fixed on the inclined plane of the ferrule, the bottom surface of the PGP chip is square and comprises two opposite first side edges and two opposite second side edges, the two first sides are parallel to the inclined direction of the upper end face of the ferrule, the vertical distance between the midpoint of the two first sides and the opposite ferrule edge is L1 and L2 respectively, the length of L1 is equal to that of L2, the vertical distance between the midpoint of the second side at the lower position and the opposite ferrule edge is L3, the vertical distance between the midpoint of the second side at the higher position and the opposite ferrule edge is L4, and the length difference between L3 and L4 is 0.08-0.25 mm.

Preferably, still include magnetic ring, first briquetting, second briquetting, sleeve and protecgulum, connect through glue between first briquetting and the second briquetting.

The utility model discloses well PGP chip passes through gripper subsides dress, makes the PGP chip when the location, compares in prior art to the direction skew 0.08mm ~0.25mm that the light path deflected to reduce the size of PGP chip, and then reach reduce cost and do not cause the excessive purpose of losing of light power again.

The utility model discloses under the prerequisite of guaranteeing product performance, reduced the size of PGP chip, the cost reduction is about 30%, has practiced thrift the resource, and the product is more competitive under market economy.

Drawings

Fig. 1 is a schematic diagram of a connection position of a PGP chip and a ferrule in the related art.

Fig. 2 is a schematic projection view of fig. 1 in a direction perpendicular to the upper end surface of the ferrule.

Fig. 3 is a diagram illustrating light propagation within an isolator after a PGP chip size is reduced in the prior art.

Fig. 4 is a schematic axial sectional structure of the present invention.

Fig. 5 is a schematic diagram of the connection position of the PGP chip and the ferrule of the present invention.

Fig. 6 is a schematic view of the projection perpendicular to the direction of the inclined surface on the ferrule in fig. 5.

In the figure: the optical fiber connector comprises a 1PGP chip, a 2 inserting core, a 3 magnetic ring, a 4 first pressing block, a 5 second pressing block, a 6 sleeve, a 7 front cover, an 8 inclined plane, a 9 first side edge, a 10 second side edge and 11 glue.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings.

Example 1

Referring to fig. 4-6, a low-cost chip-dislocated adaptive isolator includes a ferrule 2, a PGP chip 1, a magnetic ring 3, a first press block 4, a second press block 5, a sleeve 6, and a front cover 7. The top end of the ferrule 2 is provided with an inclined plane 8, the inclined plane 8 and the cross section of the ferrule 2 form an adapter reflection angle which is an included angle X, the included angle X is 2-8 degrees, the PGP chip 1 is fixed on the inclined plane 8 of the inserting core 2, the bottom surface of the PGP is square and comprises two opposite first side edges 9 and two opposite second side edges 10, the two first sides 9 are parallel to the inclined direction of the upper end face of the ferrule 2, the vertical distances between the middle points of the two first sides 9 and the edges of the ferrule 2 opposite to the middle points are respectively L1 and L2, the length of L1 is equal to that of L2, the vertical distance between the middle point of the second side 10 at the lower position and the edge of the ferrule 2 opposite to the middle point is L3, the vertical distance between the middle point of the second side 10 at the higher position and the ferrule 2 opposite to the middle point is L4, and the length difference between L3 and L4 is 0.08-0.25 mm.

The magnetic ring 3 is arranged on the outer side of the PGP chip 1 and is arranged in the first pressing block 4, the second pressing block 5, the sleeve 6 and the front cover 7 are sequentially arranged on the outer side of the inserting core 2 from top to bottom along the axial direction of the inserting core 2, the inserting core 2 is arranged in the first pressing block 4, the second pressing block 5 and the sleeve 6, the first pressing block 4 and the second pressing block 5 are connected through glue 11, the sleeve 6 is arranged in the second pressing block 5 and the front cover 7, and the front cover 7 is arranged in the second pressing block 5.

Specifically, when the angle of the included angle X is 2 °, the difference between the length of L3 and the length of L4 is 0.08 mm; when the included angle X is 4 degrees, the difference between the length of L3 and the length of L4 is 0.15 mm; when the included angle X is 6 degrees, the difference between the length of the L3 and the length of the L4 is 0.2mm, when the PGP chip 1 is mounted on the ferrule 2, the PGP chip 1 deviates 0.2mm towards the deflection direction of the optical path, and the side length of the PGP chip 1 can be reduced to 0.3 mm; when the angle of the included angle X is 8 degrees, the difference between the length of L3 and the length of L4 is 0.25 mm.

The utility model discloses practiced thrift raw and other materials, greatly reduced the cost and not cause the excessive loss of luminous power.

Claims

1. The utility model provides a low-cost adaptation isolator of chip dislocation, includes lock pin and PGP chip, its characterized in that: the top end of the ferrule is provided with an inclined plane, the reflection angle of an adapter formed by the inclined plane and the cross section of the ferrule is an included angle X, the included angle X is 2-8 degrees, the PGP chip is fixed on the inclined plane of the ferrule, the bottom surface of the PGP chip is square and comprises two opposite first side edges and two opposite second side edges, the two first side edges are parallel to the inclined direction of the upper end face of the ferrule, the vertical distances between the middle points of the two first side edges and the opposite edges of the ferrule are L1 and L2 respectively, the length of L1 is equal to that of L2, the vertical distance between the middle point of the second side edge at the lower position and the opposite edges of the ferrule is L3, the vertical distance between the middle point of the second side edge at the higher position and the opposite edges of the ferrule is L4, and the difference between the length of L3 and the length of L4 is 0.08-0.25 mm.

2. The low cost, die-misaligned adaptive isolator of claim 1, wherein: the PGP chip comprises a PGP chip, and is characterized by further comprising a magnetic ring, a first pressing block, a second pressing block, a sleeve and a front cover, wherein the magnetic ring is arranged on the outer side of the PGP chip and is arranged in the first pressing block, the second pressing block, the sleeve and the front cover are sequentially arranged on the outer side of the inserting core from top to bottom along the axial direction of the inserting core, the inserting core is arranged in the first pressing block, the second pressing block and the sleeve, the first pressing block and the second pressing block are connected through glue, the sleeve is arranged in the second pressing block and the front cover, and the.