CN212321901U

CN212321901U - Pluggable collimating device

Info

Publication number: CN212321901U
Application number: CN202021226338.6U
Authority: CN
Inventors: 蒋波; 王鹏; 蒋友林; 梁增亮
Original assignee: O Net Communications Shenzhen Ltd
Current assignee: O Net Technologies Shenzhen Group Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-01-08
Anticipated expiration: 2030-06-29

Abstract

The utility model relates to the field of optical communication, in particular to a pluggable collimator, which comprises an optical fiber, an optical element, a ferrule for fixing the optical fiber, and a first sleeve with the same inner diameter for connecting the optical element and the ferrule, wherein one end of the ferrule and the optical element are both fixed in the first sleeve; compared with the prior art, the utility model discloses a design a but plug collimating device, its optical element is unanimous with the lock pin external diameter, and sets up in the first sleeve of same internal diameter, has effectively improved the concentricity of optic fibre in its optical element and the lock pin, and is further, will first sleeve sets up to non-closed sleeve, does not have sealed chamber between the optic fibre in optical element and the lock pin promptly, the effectual degree of difficulty that reduces glue solidification technology, and then has effectively reduced manufacturing cost.

Description

Pluggable collimating device

Technical Field

The utility model relates to an optical communication field, concretely relates to can pull out and insert collimating device.

Background

The pluggable collimation product is mainly used in a multi-channel laser product, and collimated light of a plurality of channels is converged into optical fibers for transmission to realize optical signal transmission; and converging the signals in the optical fibers to the photoelectric conversion device at the receiving end to realize optical signal receiving.

At present, the glazing socket on the market mainly comprises an optical fiber, a lens, a metal piece for fixing the lens, a ferrule for fixing the optical fiber, a metal piece for fixing the ferrule, a sleeve for connecting the ferrule and other metal pieces with structural functions, wherein the concentricity of the optical fiber and the lens on the current structure is influenced by the accumulated tolerance of a plurality of structural pieces and usually reaches 0.06mm, so that the deflection angle of a product light beam is larger, and a client needs a larger debugging space and more time to couple when using the product; meanwhile, a sealing cavity is formed between the lens and the inserting core, so that the process of the lens is complex during curing, and the influence of gas expansion in the sealing cavity on the position of the lens during curing needs to be strictly controlled, so that the production cost of a product is higher.

Therefore, designing a pluggable collimator with high concentricity between the optical element and the optical fiber in the ferrule and no sealed cavity therebetween is a problem of intensive research in the field.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the present invention lies in providing a pluggable collimator having no sealed cavity between the optical element and the ferrule, which has high concentricity of the optical fiber in the ferrule, and is aimed at the above defects of the prior art.

The utility model provides a technical scheme that its technical problem adopted is: the pluggable collimation device is provided, and the preferable scheme is as follows: the pluggable collimating device comprises an optical fiber, an optical element, a ferrule for fixing the optical fiber and a first sleeve for connecting the optical element and the ferrule, wherein the inner diameter of the first sleeve is consistent with that of the ferrule, and one end of the ferrule and the optical element are both fixed in the first sleeve.

Wherein, the preferred scheme is as follows: the first sleeve is a non-enclosed sleeve.

Wherein, the preferred scheme is as follows: the first sleeve is made of metal materials or ceramic materials.

Wherein, the preferred scheme is as follows: the outer diameter of the optical element is the same as the outer diameter of the ferrule.

Wherein, the preferred scheme is as follows: the optical element is fixedly bonded with the first sleeve through glue, and one end of the inserting core is fixedly bonded with the first sleeve through glue or in interference fit.

Wherein, the preferred scheme is as follows: the optical elements can be different lenses such as ball lenses, C-Lens, G-Lens, aspheric lenses and the like.

Wherein, the preferred scheme is as follows: but plug collimator still is provided with the second sleeve, the telescopic one end of second is big internal diameter groove, and the other end is little internal diameter groove, big internal diameter groove cover is established at first sleeve outside and with first sleeve outer wall connection, and its little internal diameter groove cover is established in the lock pin outside and is connected with the lock pin outer wall.

Wherein, the preferred scheme is as follows: the second sleeve is connected with the inserting core through glue or interference fit.

Wherein, the preferred scheme is as follows: the pluggable collimating device further comprises a sleeve for fixing the inserting core, the sleeve is sleeved outside the inserting core, and one end of the sleeve is connected with the second sleeve.

Wherein, the preferred scheme is as follows: the pluggable collimating device further comprises a shell, and the shell is sleeved outside the second sleeve.

The beneficial effects of the utility model reside in that, compared with the prior art, the utility model discloses a design a but plug collimating device, its optical element is unanimous with the lock pin external diameter, and sets up in the first sleeve of same internal diameter, has effectively improved the concentricity of optic fibre in its optical element and the lock pin, and is further, will first sleeve sets up to non-closed sleeve, does not have sealed chamber between the optic fibre in optical element and the lock pin promptly, the effectual degree of difficulty that reduces glue solidification technology, and then has effectively reduced manufacturing cost.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a first schematic structural diagram of a pluggable collimator according to the present invention;

fig. 2 is a partial schematic view of a pluggable collimator of the present invention;

fig. 3 is a schematic structural view of a first sleeve according to the present invention;

fig. 4 is a schematic structural diagram of a pluggable collimator according to the present invention;

figure 5 is a schematic diagram of a pluggable collimator of the prior art.

Detailed Description

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the present invention provides a preferred embodiment of a pluggable collimator.

Referring to fig. 1 (fig. 1 is a transverse cross-sectional view of the pluggable collimator), the pluggable collimator includes an optical fiber, an optical element 100, a ferrule 200 for fixing the optical fiber, and a first sleeve 300 having a uniform inner diameter for connecting the optical element 100 and the ferrule 200, wherein one end of the ferrule 200 and the optical element 100 are both fixed in the first sleeve 300.

Wherein, the outer diameters of the optical element 100 and the ferrule 200 are the same, and the optical element and the ferrule are both assembled with the first sleeve 300 by gluing, and for the collimator product, the deflection angle of the light beam is a key index, the index depends on the concentricity of the optical fiber and the optical element, but in the prior art, the optical element and the ferrule are respectively and fixedly arranged in different structural members, concentricity between the optical fiber and the optical element is affected by the tolerance stack-up of the various structural members, but product requirements are that concentricity typically be as high as 0.06mm, this results in a large deflection angle of the product beam, requiring more space and time for the customer to use for coupling, but in the present invention, with reference to figure 2, since the optical element 100 is identical to the outer diameter of the ferrule 200, a very high concentricity between the optical element 100 and the ferrule 200 can be secured by the direct fitting of the first sleeve 300.

Further, first sleeve 300 is the non-closed sleeve, because among the prior art, after the collimator product equipment, there is sealed chamber between its optical element and lock pin, leads to optical element technology complicated when the solidification, need the influence of the sealed intracavity gas expansion to the optical element position when the strict control solidifies to increased the manufacturing cost of product, and in this reality is novel, adopts the non-closed sleeve, and its purpose makes can not form sealed chamber between lens and lock pin, further improves pluggable collimator's light beam declination performance, has effectively reduced the manufacturing cost of product simultaneously.

Wherein, referring to fig. 3 (fig. 3 is a longitudinal sectional view of the pluggable collimator), the first sleeve 300 may adopt an open sleeve made of ceramic (its open structure refers to a in fig. 1), further, referring to fig. 4 (fig. 4 is a transverse sectional view of the pluggable collimator), the first sleeve 300 may also adopt a stainless steel tube, and an air hole B is opened in the middle of the stainless steel tube, both embodiments can be non-enclosed, and are simple and convenient to operate.

Further, referring to fig. 1, in this embodiment, the pluggable collimator is further provided with a second sleeve 400, one end of the second sleeve 400 is a large inner diameter groove, and the other end is a small inner diameter groove, the large inner diameter groove is sleeved outside the first sleeve 300 and is fixedly connected to the outer wall of the first sleeve 300, and the small inner diameter groove is sleeved outside the ferrule 200 and is fixedly connected to the outer wall of the ferrule 200.

Further, referring to fig. 1, the pluggable collimator further includes a housing 500, the housing 500 is disposed outside the second sleeve 400, a sleeve 600 is disposed between the ferrule 200 and the housing 500, the sleeve 600 is disposed outside the ferrule 200, and one end of the sleeve 600 is connected to the second sleeve 400 for fixing the ferrule 200.

The first sleeve 300 and the ferrule 200 can be bonded by glue or connected by interference fit; the second sleeve 400 and the ferrule 200 can be bonded by glue or connected by interference fit.

The optical element 100 may be a ball Lens, a C-Lens, a G-Lens, an aspheric Lens, or other different lenses.

Specifically, referring to fig. 5, in the prior art, the optical receptacle mainly includes an optical fiber, a ferrule C for fixing the optical fiber by glue, a metal member D for fixing the ferrule C by interference fit, a sleeve E for connecting the ferrule C by interference fit, and other metal members F for performing a structural function by glue or interference fit. Lens G passes through the glue bonding to be fixed on the metalwork H who plays the connection, and wherein, the distance precision of lens and optic fibre is key index, has decided the proportion that light signal coupling got into in optic fibre or the photoelectric conversion device, therefore the purpose of metalwork H except fixing lens in optical socket, easier centre gripping when also making the accurate regulation lens position of equipment, but the major defect of current plug collimator product includes:

1. the deflection angle of the beam for the collimator product is a key criterion that depends on the concentricity of the fiber and lens, but in current configurations the concentricity of the fiber and lens is affected by the cumulative tolerance of the various structural members, typically up to 0.06 mm. This results in a larger product beam deflection angle, requiring more space and time for the customer to use for coupling.

2. A sealing cavity is formed between the lens and the inserting core, so that the process of the lens is complex during curing, and the influence of gas expansion in the sealing cavity on the position of the lens during curing needs to be strictly controlled, so that the production cost of a product is increased.

In order to solve the above problems, the present invention provides a pluggable collimator as shown in fig. 1, which is provided with an optical lens 100 and a ferrule 200 having the same outer diameter, and a first sleeve 300 having the same inner diameter and being non-enclosed, wherein the top ends of the optical lens 100 and the ferrule 200 are fixed in the first sleeve 300, so as to ensure that there is a very high concentricity between the optical element 100 and the ferrule 200, which can reach 0.02mm or less; the first sleeve 300 is designed to be non-closed, so that a sealed cavity is not formed between the optical element 100 and the ferrule 200; thereby improving the beam deflection performance of the pluggable collimating device and reducing the manufacturing cost of the product; further, a second sleeve 400 is arranged outside the ferrule 200 and the first sleeve 300, the section of the second sleeve 400 is Z-shaped, the front part of the second sleeve 400 is provided with a large inner diameter opening for accommodating and fixing the first sleeve 300, and the rear part of the second sleeve is provided with a small inner diameter opening for accommodating and fixing the ferrule 200; a shell 500 is further arranged outside the second sleeve 400, the top of the shell 500 is connected with the second sleeve 400 through interference fit, and a sleeve 600 is arranged between the shell 500 and the part of the ferrule 200 which is not wrapped by the second sleeve 400, wherein the sleeve 600 can further fix the ferrule 200 and the optical fiber.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, which is intended to cover all equivalent changes and modifications made within the scope of the present invention.

Claims

1. A pluggable collimation device, comprising: the pluggable collimating device comprises an optical element, an optical fiber, a ferrule for fixing the optical fiber and a first sleeve which is used for connecting the optical element and the ferrule and has the same inner diameter, wherein one end of the ferrule and the optical element are both fixed in the first sleeve.

2. The pluggable collimation device of claim 1, wherein: the first sleeve is a non-enclosed sleeve.

3. The pluggable collimation device of claim 1, wherein: the first sleeve is made of metal materials or ceramic materials.

4. The pluggable collimation device of claim 1, wherein: the outer diameter of the optical element is the same as the outer diameter of the ferrule.

5. The pluggable collimation device of claim 4, wherein: the optical element is fixedly bonded with the first sleeve through glue, and one end of the inserting core is fixedly bonded with the first sleeve through glue or in interference fit.

6. The pluggable collimation device of claim 4, wherein: the optical elements can be different lenses such as ball lenses, C-Lens, G-Lens, aspheric lenses and the like.

7. The pluggable collimation device of claim 1, wherein: but plug collimator still is provided with the second sleeve, the telescopic one end of second is big internal diameter groove, and the other end is little internal diameter groove, big internal diameter groove cover is established at first sleeve outside and with first sleeve outer wall connection, and its little internal diameter groove cover is established in the lock pin outside and is connected with the lock pin outer wall.

8. The pluggable collimation device of claim 7, wherein: the second sleeve is connected with the inserting core through glue or interference fit.

9. The pluggable collimation device of claim 7, wherein: the pluggable collimating device further comprises a sleeve for fixing the inserting core, the sleeve is sleeved outside the inserting core, and one end of the sleeve is connected with the second sleeve.

10. The pluggable collimation device of claim 7, wherein: the pluggable collimating device further comprises a shell, and the shell is sleeved outside the second sleeve.