CN215769118U

CN215769118U - Isolation filtering mixer

Info

Publication number: CN215769118U
Application number: CN202122404057.6U
Authority: CN
Inventors: 邓建明; 周习军; 林亚桢
Original assignee: FUJIAN ZHONGCE OPTICS Inc
Current assignee: FUJIAN ZHONGCE OPTICS Inc
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-02-08
Anticipated expiration: 2031-09-30

Abstract

The utility model relates to an isolation filtering mixer, which comprises a glass tube, wherein a first collimator, a second collimator, an optical filter and an isolator are arranged in the glass tube, the first collimator and the second collimator are fixed at two axial ends of the glass tube, the optical filter is fixedly connected with the first collimator, the isolator is arranged between the optical filter and the second collimator, the isolation filter further comprises a copper sleeve fixed in the glass tube, the first collimator is fixed in the copper sleeve, one end of the copper sleeve, which is close to the isolator, is provided with a mounting surface, a mounting groove is arranged in the mounting surface, the optical filter is fixed in the mounting groove through an adhesive, an alignment groove is arranged on the outer wall of the copper sleeve, the alignment groove extends from one axial end of the copper sleeve to the other axial end, the two axial ends of the first collimator are respectively arranged as a first end and a second end, the second end is arranged between the first end and the optical filter, and a first oblique plane is formed at the second end of the first collimator, the position of the first inclined cutting surface, which is farthest away from the first end, corresponds to the alignment groove. The utility model has the advantages of simple structure and convenient installation, and concentrates the isolator and the optical filter in the glass tube.

Description

Isolation filtering mixer

Technical Field

The utility model relates to an isolation filtering mixer, and belongs to the field of optical components.

Background

In the field of optical communication technology, gain flattening filters are widely used in various optical amplification systems. After the optical signal in the communication trunk is amplified by the optical amplifier, the optical power of the optical signal is different due to different amplification effects of the optical amplifier on different wavelengths, so that the optical power of different wavelengths is different, and the spectrum is uneven. And the gain flattening filter can make the opposite gain effect according to the amplification effect of the system so as to enable the optical signal to be flattened. Meanwhile, in order to reduce the influence on the light source in the light amplification system, an isolator is assembled to reduce the influence on the light source. For example, in chinese utility model patent entitled "a gain flattening filter" with an authorization publication No. CN204101770U, a gain flattening filter is disclosed, which is characterized in that: the single-fiber collimator comprises a single-fiber head, a light filter, a collimating lens and a single-fiber collimator, wherein the light filter is fixed on a light-emitting surface of the single-fiber head and covers a fiber core of the single-fiber head, the collimating lens and the single-fiber collimator are arranged on the same horizontal line and are sequentially arranged, a distance D is arranged between the single-fiber head and the collimating lens, and a distance D is arranged between the collimating lens and the single-fiber collimator. The single optical fiber head, the optical filter and the collimating lens are all arranged in the first glass sleeve, the single optical fiber collimator is arranged in the second glass sleeve, the single optical fiber collimator further comprises a third glass sleeve and an isolator core, the first glass sleeve, the second glass sleeve and the isolator core are all sleeved in the third glass sleeve, and the isolator core is arranged between the first glass sleeve and the second glass sleeve.

In the above patent, there are three fixing methods for the optical filter and the single optical fiber head, which are respectively fixed by the adhesive, the darkening adhesive and the high transmittance adhesive. Because single fiber head (or collimater) and light filter bonding, need to have higher installation accuracy, otherwise will receive great influence at light conduction and filtering, present this kind of structure, it is higher to staff's operating skill requirement, often need counterpoint repeatedly moreover, just can realize accurate installation.

Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel mixing device which is simple in structure and convenient to install.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an isolation filtering mixer comprises a glass tube, wherein a first collimator, a second collimator, an optical filter and an isolator are arranged in the glass tube, the first collimator and the second collimator are fixed at two axial ends of the glass tube, the optical filter is fixedly connected with the first collimator, the isolator is arranged between the optical filter and the second collimator, the isolation filtering mixer further comprises a copper sleeve fixed in the glass tube, the first collimator is fixed in the copper sleeve, one end, close to the isolator, of the copper sleeve is provided with a mounting surface, a mounting groove is formed in the mounting surface, the optical filter is fixed in the mounting groove through an adhesive, a positioning groove is formed in the outer wall of the copper sleeve, the positioning groove extends to the other end from one axial end of the copper sleeve, the two axial ends of the first collimator are respectively arranged to be a first end and a second end, the second end is arranged between the first end and the optical filter, the first collimator forms a first inclined plane at the second end, the position of the first inclined cutting surface, which is farthest away from the first end, corresponds to the alignment groove.

As a preferable mode of the present invention, an angle between the first chamfered surface and an axis of the first collimator is 82 °, and the mounting surface is parallel to the first chamfered surface.

In a preferred aspect of the present invention, the alignment groove has a V-shaped cross section along a circumferential direction of the copper bush.

In a preferred embodiment of the present invention, the outer wall of the copper sleeve is fixed to the inner wall of the glass tube by an adhesive.

In a preferred embodiment of the present invention, the outer wall of the separator is fixed to the inner wall of the glass tube by an adhesive.

In a preferred embodiment of the present invention, the outer wall of the second collimator is fixed to the inner wall of the glass tube by an adhesive.

In a preferred embodiment of the present invention, the isolator includes a magnetic ring, and a first polarizing plate and a second polarizing plate provided in the magnetic ring, and a faraday rotator is provided between the first polarizing plate and the second polarizing plate.

In a preferred embodiment of the present invention, the glass tube has an inner diameter of 2 mm.

By adopting the preferred mode of the utility model, the copper sleeve is arranged as a connecting carrier of the first collimator and the optical filter, the copper sleeve is convenient to process, the installation groove is arranged on the installation surface of the copper sleeve, the installation and the positioning of the optical filter are convenient, and the alignment groove is arranged on the copper sleeve, so that the first collimator is convenient to align on the copper sleeve, and the alignment of the first collimator and the optical filter is realized. In the utility model, light enters from the first collimator, a gain flat spectrum is obtained after filtering light by the optical filter, and then the light with isolated direction is obtained by the isolator core.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the copper bush on the mounting surface in the utility model.

In the figure:

first end 11 of first collimator 10

Second end 12 first chamfered surface 13

Second collimator 20 glass tube 30

Isolator 40 filter 50

Copper bush 60 mounting surface 61

Mounting groove 62 alignment groove 63

First sidewall 631 and second sidewall 632

Datum line 633

Detailed Description

In order to further explain the technical solution of the present invention, the following detailed description is made with reference to the embodiments.

Referring to fig. 1 to 2, an isolation filter mixer includes a glass tube 30, a first collimator 10, a second collimator 20, a filter 50, and an isolator 40 are disposed in the glass tube 30, the first collimator 10 and the second collimator 20 are both fixed at two axial ends of the glass tube 30, the filter 50 is fixedly connected to the first collimator 10, and the isolator 40 is disposed between the filter 50 and the second collimator 20. The improvement of the utility model is that: the collimator further comprises a copper sleeve 60 fixed in the glass tube 30, the first collimator 10 is fixed in the copper sleeve 60, an installation surface 61 is arranged at one end, close to the isolator 40, of the copper sleeve 60, an installation groove 62 is formed in the installation surface 61, the installation groove 62 extends axially along the copper sleeve 60, and the shape of the installation groove 62 is matched with that of the optical filter 50. The filter 50 is fixed in the installation groove 62 by an adhesive (not shown in the drawings, and the adhesives mentioned below are not shown). The outer wall of the copper sleeve 60 is provided with a registration groove 63, the registration groove 63 extends from one axial end of the copper sleeve 60 to the other axial end, and the registration groove 63 is parallel to the axis of the copper sleeve 60. The two ends of the first collimator 10 along the axial direction are respectively provided with a first end 11 and a second end 12, the second end 12 is arranged between the first end 11 and the optical filter 50, the first collimator 10 forms a first inclined plane 13 at the second end 12, and the position of the first inclined plane 13, which is farthest away from the first end 11, corresponds to the alignment groove 63.

As a preferred mode of the present invention, the included angle between the first chamfered surface 13 and the axis of the first collimator 10 is 82 °, and the mounting surface 61 is parallel to the first chamfered surface 13, which is shown in fig. 1, and the included angle between the mounting surface 61 and the axis of the first collimator 10 is 82 °, i.e. an angle at a in the drawing.

In a preferred embodiment of the present invention, the alignment groove 63 has a V-shaped cross section along the circumferential direction of the copper sleeve 60, and includes a first side wall 631 and a second side wall 632, and a connection line between the first side wall 631 and the second side wall 632 serves as a reference line 633 for alignment when the first collimator 10 is mounted.

In a preferred embodiment of the present invention, the outer wall of the copper sleeve 60 is fixed to the inner wall of the glass tube 30 by an adhesive.

In a preferred embodiment of the present invention, the outer wall of the separator 40 is fixed to the inner wall of the glass tube 30 by an adhesive.

In a preferred embodiment of the present invention, the outer wall of the second collimator 20 is fixed to the inner wall of the glass tube 30 by an adhesive.

In the present invention, the distances between the first collimator 10, the filter 50, the isolator 40 and the second collimator 20 are adjusted according to the optical characteristic requirements, and will not be described in detail herein.

In a preferred embodiment of the present invention, the isolator 40 includes a magnetic ring, and a first polarizing plate and a second polarizing plate provided in the magnetic ring, and a faraday rotator is provided between the first polarizing plate and the second polarizing plate. The structure of such a separator 40 is disclosed in the prior art and will not be described in detail herein.

In a preferred embodiment of the present invention, the glass tube 30 has an inner diameter of 2 mm.

The product form of the present invention is not limited to the embodiments, and any suitable changes or modifications of the similar ideas by anyone should be considered as not departing from the patent scope of the present invention.

Claims

1. The utility model provides an keep apart filtering blender, includes the glass pipe, is provided with first collimater, second collimater, light filter and isolator in the glass pipe, and first collimater and second collimater are all fixed at the axial both ends of glass pipe, light filter and first collimater fixed connection, and the isolator setting is between light filter and second collimater, its characterized in that: still including fixing copper sheathing in the glass pipe, first collimater is fixed in the copper sheathing, and the copper sheathing is close to the one end of isolator is equipped with the installation face, is equipped with the mounting groove in the installation face, the light filter passes through the adhesive to be fixed in the mounting groove, is equipped with the counterpoint groove at the outer wall of copper sheathing, and the counterpoint groove extends to the other end from the axial one end of copper sheathing, and first collimater is established respectively to first end and second end along axial both ends, the second end set up first end with between the light filter, first collimater is held in the second and is formed first scarf, and the position that first end was kept away from most to first scarf corresponds the setting of counterpoint groove.

2. An isolating filter mixer as in claim 1, wherein: the included angle between the first chamfer plane and the axis of the first collimator is 82 degrees, and the mounting surface is parallel to the first chamfer plane.

3. An isolating filter mixer as in claim 2, wherein: the cross section of the alignment groove along the circumferential direction of the copper sleeve is V-shaped.

4. An isolation filter mixer as claimed in claim 3, wherein: the outer wall of the copper sleeve is fixed on the inner wall of the glass tube through an adhesive.

5. An isolation filter mixer as claimed in claim 4, wherein: the outer wall of the isolator is fixed on the inner wall of the glass tube through adhesive.

6. An isolation filter mixer as claimed in claim 5, wherein: the outer wall of the second collimator is fixed on the inner wall of the glass tube through an adhesive.

7. An isolation filter mixer as claimed in claim 6, wherein: the isolator comprises a magnetic ring, a first polaroid and a second polaroid, wherein the first polaroid and the second polaroid are arranged in the magnetic ring, and a Faraday rotator is arranged between the first polaroid and the second polaroid.

8. An isolation filter mixer as claimed in claim 7, wherein: the inner diameter of the glass tube is 2 mm.