CN219936233U

CN219936233U - Optical isolator

Info

Publication number: CN219936233U
Application number: CN202321601777.4U
Authority: CN
Inventors: 罗志国
Original assignee: Suzhou Tfc Optical Communication Co ltd
Current assignee: Suzhou Tfc Optical Communication Co ltd
Priority date: 2023-06-21
Filing date: 2023-06-21
Publication date: 2023-10-31
Anticipated expiration: 2033-06-21

Abstract

The utility model discloses an optical isolator, which comprises a base, a first limiting part and a second limiting part, wherein the base is provided with a first limiting part and a second limiting part; the chip set comprises a first polaroid, a gyratory piece and a second polaroid which are parallel to each other and form a fixed angle with the axis direction of the base; the first limiting part and the second limiting part are arranged on the base in a protruding mode, the first limiting part is provided with a first light-transmitting hole and a first groove for clamping the first polaroid, the second limiting part is provided with a second light-transmitting hole, and two sides of the width direction of the second limiting part are respectively provided with a second groove for clamping the rotary sheet and a third groove for clamping the second polaroid. The optical isolator provided by the utility model has the advantages that the light-transmitting area is free of glue, the influence of factors such as the thickness of the glue, the uniformity of the glue, whether the glue has bubbles and other impurities, the performance of the glue and the like on the optical isolator is avoided, and the integrated base is adopted, so that the chip is easy to assemble and the efficiency is higher.

Description

Optical isolator

Technical Field

The present utility model relates to the field of optical communications, and more particularly, to an optical isolator.

Background

The traditional optical isolator is provided with a glued structure on the optical path, and all parts of the isolator are glued together by glue, but factors such as thickness, uniformity, whether the glue has bubbles and other impurities tend to influence the performance of the isolator; because of the limitation of the performance of the glue, the power of 300mW can only be born, if the power is too high, the glue has the risk of burning, and equipment can be seriously damaged, so that irreversible loss is caused. In addition, the existing optical isolator is manually assembled, so that the efficiency is low, the optical isolator is not suitable for batch production, the angle consistency among all chips is poor, and the isolation degree is low.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

Disclosure of Invention

The utility model aims to provide an optical isolator which can ensure that the angle consistency of each chip is good, the isolation degree is high, and the influence of glue on the optical isolator is avoided.

To achieve the above object, the present utility model provides an optical isolator comprising:

the base comprises a base, a first limiting part and a second limiting part;

the chip set comprises a first polaroid, a gyratory piece and a second polaroid which are parallel to each other and form a fixed angle with the axis direction of the base;

the first limiting part and the second limiting part are arranged on the base in a protruding mode, the first limiting part is provided with a first light-transmitting hole and a first groove for clamping the first polaroid, the second limiting part is provided with a second light-transmitting hole, and two sides of the width direction of the second limiting part are respectively provided with a second groove for clamping the rotary sheet and a third groove for clamping the second polaroid.

In one or more embodiments, the first light-passing aperture, the second light-passing aperture, the first polarizer, the light rotator, and the second polarizer are at least partially coincident along a projection of a direction perpendicular to the first polarizer onto a plane parallel to the first polarizer.

In one or more embodiments, the first limiting portion is provided with a first glue containing portion at one side of the first groove, and the second limiting portion is provided with a second glue containing portion and a third glue containing portion at two sides of the second limiting portion in the width direction.

In one or more embodiments, the first glue receptacle is filled with glue for fixing the first polarizer; the second glue containing part is filled with an adhesive for fixing the optical rotation sheet; the third glue containing part is filled with an adhesive for fixing the second polaroid.

In one or more embodiments, the first polarizer, the spin sheet, and the second polarizer form a fixed angle of 83±0.5° with the base axis direction.

In one or more embodiments, the base, the first stop portion, and the second stop portion are integrally formed.

In one or more embodiments, the optical isolator further comprises a magnet housing that matches the shape of the base; the magnet housing is sleeved with the base.

In one or more embodiments, the adhesive for fixing the base and the magnet housing is applied to the joint of the magnet housing and the base.

In one or more embodiments, an opening for mounting a first polarizer is provided on a side of the first groove away from the base; an opening for installing a spinning piece is formed in one side, away from the base, of the second groove; an opening for installing the first polaroid is arranged on one side, away from the base, of the third groove.

In one or more embodiments, the bottom surfaces of the first, second and third grooves are parallel to the first, second and optically active plates

Compared with the prior art, the optical isolator provided by the utility model adopts the integrated base, so that the chip is easy to assemble and the efficiency is high;

the optical isolator provided by the utility model increases the contact area between the base and the isolator chip, so that the heat in the isolator can be rapidly dissipated under high power;

the optical isolator provided by the utility model has no glue in the light-transmitting area, and avoids the influence of the factors such as the thickness of glue, the uniformity of the glue, whether the glue has bubbles and other impurities, the performance of the glue and the like on the optical isolator.

Drawings

FIG. 1 is a perspective view of an optical isolator according to an embodiment of the present utility model;

FIG. 2 is a top view of a base and chipset according to an embodiment of the present utility model;

FIG. 3 is a perspective view of a chipset mount according to an embodiment of the present utility model;

fig. 4 is a perspective view of a base according to an embodiment of the present utility model.

The three-dimensional light source comprises a magnet shell, a base, a first limiting part, a second limiting part, a base, a 3-chip set, a first polarizing plate, a second polarizing plate, a first glue containing part, a second glue containing part, a third glue containing part, a first groove, a second groove, a third groove, a first light-transmitting hole and a second light-transmitting hole.

Detailed Description

The following detailed description of embodiments of the utility model is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the utility model is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.

As shown in fig. 1 to 4, an optical isolator according to an embodiment of the present utility model includes a magnet housing 1, a base 2, and a chipset 3, wherein the magnet housing 1 is matched to the shape of the base 2, preferably circular, so as to be assembled with a conventional socket connector (circular), and the base 2 may be connected to the magnet housing 1 by glue or may be clamped to the magnet housing 1, which is not limited by the embodiment of the present utility model. The magnet housing 1 is capable of forming a magnetic field parallel to the direction of the light path. The magnetic field formed by the magnet housing 1 is set so that the polarization direction of light passing through the spinning plate 32 is the same as the transmission direction of the second polarizing plate 3.

Further, referring to fig. 4, the base includes a base 23, and a first limiting portion 21 and a second limiting portion 22 protruding on the base 23. The base 23, the first limiting portion 21 and the second limiting portion 22 are integrally formed, so that the isolator chip is installed more conveniently, the limiting portions are not easy to deform, and the angle consistency among the chips is improved. The first limiting portion 21 is provided with a first light-transmitting hole 61 and a first groove 51, the second limiting portion 22 is provided with a second light-transmitting hole 62, and the two sides of the second limiting portion 22 in the width direction are respectively provided with a second groove 52 and a third groove 53. The first glue containing portion 41 is further disposed on the side of the first limiting portion 21 where the first groove 51 is disposed, and the second glue containing portion 42 and the third glue containing portion 43 are disposed on two sides of the second limiting portion 22 in the width direction.

In the utility model, the base 2 is preferably made of 4J29 kovar alloy or tungsten copper, and has high reliability and good heat dissipation performance. The integral molding process may employ powder metallurgy, which is a process technique for producing metal powders or producing metal materials, composite materials, and various types of products from metal powders (or a mixture of metal powders and non-metal powders) as raw materials through molding and sintering. Has the advantages of low cost and high consistency. The glue containing part can be a rectangular groove or an irregularly-shaped groove, the embodiment of the utility model does not limit the problem, and the glue containing part is preferably a rectangular groove, so that the processing is convenient, and the adhesive attaching area is large.

Further, referring to fig. 3, the chipset includes a first polarizer 31, an optical rotation plate 32, and a second polarizer 33 that are parallel to each other, and a fixed angle of 83±0.5 ° is formed between the three and the axis direction of the base 23, and the optical path isolation effect is optimal when the fixed angle is 83 degrees. The first groove 51, the second groove 52 and the third groove 53 are provided with openings at one side far away from the base 23, so that the installation and the replacement of the chip set are facilitated. Specifically, the first polarizer 31 is installed through the opening of the first groove 51, and is clamped with the first groove 51; the optical rotation sheet 32 is installed through the opening of the second groove 52 and is clamped with the second groove 52; the second polarizer 33 is installed through the opening of the third groove 53, and is clamped with the third groove 53.

Since the light path is clear, the projections of the first light-passing hole 61, the second light-passing hole 62, the first polarizing plate 31, the optical rotation plate 32, and the second polarizing plate 33 on a plane parallel to the first polarizing plate 31 in a direction perpendicular to the first polarizing plate 31 are at least partially overlapped. In order to better perform the function of the present utility model, it is preferable that the first light-transmitting hole 61, the second light-transmitting hole 62, the first polarizer 31, the optical rotation sheet 32, and the second polarizer 33 are completely overlapped in a projection on a plane parallel to the first polarizer 31 in a direction perpendicular to the first polarizer 31, and at this time, the effective incident area is maximized.

Note that, the first adhesive containing portion 41 is filled with an adhesive for fixing the first polarizer 31; the second adhesive receiving portion 42 is filled with an adhesive for fixing the optical sheet 32; the third adhesive receiving portion 43 is filled with an adhesive for fixing the second polarizing plate 33. Based on the characteristics of the adhesive, the chip and the limiting part are further fixed, so that the structure of the whole utility model is firmer and more reliable.

The utility model is further described below in connection with specific scenarios.

Linearly polarized light entering from normal direction, the polarization direction of which is along the transmission axis direction of the first polaroid 31, rotates anticlockwise by 45 degrees to the transmission axis direction of the second polaroid 33 when passing through the light rotator 32, and is transmitted smoothly; the linearly polarized light, which is reversely incident, whose polarization direction is along the transmission axis direction of the second polarizing plate 33, is still rotated counterclockwise by 45 ° to be perpendicular to the transmission axis of the first polarizing plate 31 when passing through the optical rotation plate 32, and is isolated from the transmitted light. Thus, the function of isolating the light path is achieved.

The foregoing descriptions of specific exemplary embodiments of the present utility model are presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the utility model and its practical application to thereby enable one skilled in the art to make and utilize the utility model in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims

1. An optical isolator, comprising:

the base comprises a base, a first limiting part and a second limiting part;

2. The optical isolator of claim 1 wherein the projections of the first light passing aperture, the second light passing aperture, the first polarizer, the rotator, and the second polarizer along a plane parallel to the first polarizer perpendicular to the first polarizer are at least partially coincident.

3. The optical isolator as claimed in claim 1, wherein the first limiting portion has a first glue receiving portion at one side of the first groove, and the second limiting portion has a second glue receiving portion and a third glue receiving portion at both sides in a width direction thereof, respectively.

4. The optical isolator of claim 3 wherein the first glue reservoir is filled with glue for securing the first polarizer; the second glue containing part is filled with an adhesive for fixing the optical rotation sheet; the third glue containing part is filled with an adhesive for fixing the second polaroid.

5. The optical isolator of claim 1 wherein the first polarizer, the rotator, and the second polarizer form a fixed angle of 83±0.5° with respect to the base axis.

6. The optical isolator of claim 1 wherein the base, the first stop and the second stop are integrally formed.

7. The optical isolator of claim 1, further comprising a magnet housing that matches the shape of the base; the magnet housing is sleeved with the base.

8. The optical isolator as in claim 7, wherein the magnet housing and base connection is coated with an adhesive for securing the base and magnet housing.

9. The optical isolator of claim 1 wherein a side of the first recess remote from the base is provided with an opening for mounting a first polarizer; an opening for installing a spinning piece is formed in one side, away from the base, of the second groove; an opening for installing the first polaroid is arranged on one side, away from the base, of the third groove.

10. The optical isolator of claim 1 wherein the bottom surfaces of the first, second and third grooves are parallel to the first, second and optically active plates.