CN112180515A

CN112180515A - Optical switch structure

Info

Publication number: CN112180515A
Application number: CN202011133312.1A
Authority: CN
Inventors: 高阳; 王森
Original assignee: Shenzhen Ouyi Photoelectric Technology Co ltd
Current assignee: Shenzhen Ouyi Photoelectric Technology Co ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-01-05

Abstract

The invention discloses an optical switch structure, which relates to the field of communication technology, and includes an incident optical fiber array, a multilayer waveguide array, a lens, a glass circular tube, a cover plate, a V-shaped groove and a MEMS rotating mirror, wherein the V-shaped groove is located in a multilayer On the top of one layer of the waveguide array, the incident optical fiber is arranged in a V-shaped groove, the cover plate is arranged above the incident optical fiber, and the glass round tube is arranged on the right side of the multilayer waveguide array. The invention provides an optical switch structure, which integrates an incident optical fiber array and a multi-layer waveguide array, and fans out densely spaced channels into sparse intervals through the optical waveguide, which is convenient for coupling and connection with the output optical fiber array, and can realize a large number of optical channels. The amplitude is increased, in order to overcome the problem of low quantity caused by the limitation of the diameter of the optical fiber and the angle of the rotating mirror, and the aberration of the lens in the prior art.

Description

Optical switch structure

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an optical switch structure.

Background

In recent years, the Internet service mainly based on IP shows explosive growth, and the growth trend not only changes the relation between an IP network layer and a bottom layer transmission network, but also puts new requirements on the networking mode, node design, management and control of the whole network. An intelligent network system structure-automatic exchange optical network is the hotspot of present system research, its core node is composed of optical cross-connection equipment, and it can implement dynamic wavelength route selection and flexible and effective management of optical network by using OXC, the OXC technique is one of key techniques in increasingly complex DWDM network, and the optical switch is used as the functional device for switching optical path, and is the key part in the OXC, and the optical switch matrix is the core part of the OXC, and it can implement the functions of dynamic optical path management, optical network fault protection and wavelength dynamic allocation, etc., and has important significance for solving the wavelength contention in present complex network, raising wavelength reuse rate and making network flexible configuration. As the optical transport network develops the network viability in the direction of ultra-high speed and ultra-high capacity, the problems of network protection switching and recovery become network key problems, and the protection switching of the optical switch at the optical layer plays a more important role in protecting and recovering services.

To reduce the requirement for mirror rotation and to account for lens or lens array aberrations, fiber arrays are typically two-dimensional to increase density and etched fibers are used to further increase density. The glass tube encapsulating the etched optical fiber has a square shape and a circular shape. The optical switch with the design has the remarkable characteristics of small size, excellent performance and the like, but has the following problems:

1. the two-dimensional optical fiber array adopts an interpenetration packaging mode, the optical fibers are easy to break, and the adopted corroded optical fibers with smaller cladding diameters are easier to break.

2. The two-dimensional optical fiber array is inserted and packaged, so that the optical fibers are easy to rotate, the packaging in the same direction of the array optical fibers is difficult to realize, the coupling loss of an optical switch can be increased, and the two-dimensional optical fiber array cannot be used for manufacturing a polarization-maintaining optical switch.

3. The number of channels cannot be made too large and typically cannot exceed 64 channels.

The problems greatly influence the production efficiency and the cost of the high-channel optical switch and limit the further popularization of the market field of the optical switch.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an optical switch structure for overcoming the technical defects of the prior optical switch, and the scheme that an input optical fiber is integrated with a two-dimensional multilayer waveguide array and is matched with a two-dimensional reflector is provided.

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

the utility model provides an optical switch structure, changes the mirror including incident fiber array, multilayer waveguide array, lens, glass pipe, apron, V type groove and MEMS, V type groove is located the top of one of them one deck of multilayer waveguide array, incident fiber array arranges in V type groove, the apron sets up the top at incident fiber array, the glass pipe sets up the right side at multilayer waveguide array, lens set up in the glass pipe, MEMS changes the mirror setting and keeps away from one side of multilayer waveguide array at lens, one of them incident fiber among the incident fiber array is as the incident light, all the other incident fibers in the incident fiber array can regard as emergent fiber or reserve fiber.

Preferably, the incident optical fiber array is integrated with the multilayer waveguide array.

Preferably, the lens and the waveguide array are assembled into a whole through a glass round tube.

Preferably, one side of the multilayer waveguide array is coupled with the lens, and the spacing between the waveguides is less than forty microns.

Preferably, the pitch of the multilayer waveguide array is gradually reduced from large to small, and the multilayer waveguide array is distributed in a fan shape.

Preferably, the lens is one of a Grin lens, a spherical lens or an aspherical lens, and the lens is integrally assembled with the multilayer waveguide array through a glass circular tube.

Preferably, the multilayer waveguide array may be a glass waveguide, a silicon waveguide, a polymer material waveguide, or other waveguides.

The technical scheme provided by the embodiment of the invention can have the following beneficial effects:

compared with the prior art, the optical switch structure provided by the invention integrates the incident optical fiber array and the multilayer waveguide array, fans out densely spaced channels into sparse intervals through the optical waveguide, is convenient to couple and connect with the output optical fiber array, can greatly increase the number of light-emitting channels, solves the problem of few optical fiber diameter sizes, limited rotating mirror angles, lens phase difference and the like in the prior art, and reduces the coupling loss of the optical switch.

Drawings

Fig. 1 is a schematic structural diagram of an optical switch structure according to the present invention;

fig. 2 is a cross-sectional view of a multilayer waveguide array on a side coupled with a lens in an optical switch structure according to the present invention.

In the figure: 1. an incident optical fiber array; 2. a multilayer waveguide array; 3. a lens; 4. a glass round tube; 5. a cover plate; 6. a V-shaped groove; 7. and (4) MEMS rotating mirrors.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, an optical switch structure includes an incident optical fiber array 1, a multilayer waveguide array 2, a lens 3, a glass circular tube 4, a cover plate 5, a V-groove 6 and an MEMS turning mirror 7, where the V-groove 6 is located at the top of one layer of the multilayer waveguide array 2, the incident optical fiber array 1 is arranged in the V-groove 6, the cover plate 5 is disposed above the incident optical fiber array 1, the glass circular tube 4 is disposed on the right side of the multilayer waveguide array 2, the lens 3 is disposed in the glass circular tube 4, the MEMS turning mirror 7 is disposed on the side of the lens 3 away from the multilayer waveguide array 2, one of the incident optical fibers in the incident optical fiber array 1 serves as an incident light, and the rest of the incident optical fibers in the incident optical fiber array 1 may serve as an outgoing optical fiber.

More specifically, the incident optical fiber array 1 is integrated with the multilayer waveguide array 2.

The multilayer waveguide array 2 is coupled with the lens 3, the distances between the waveguides are smaller than forty microns, the distance between the optical channels is reduced through the two-dimensional optical waveguide array, the two-dimensional superposition can realize the higher channel number in the two-dimensional direction, and the ultra-multi-channel optical switch is realized. And the optical fiber and the waveguide are integrated into a whole, so that the problem of large loss caused by the waveguide is reduced as much as possible.

More specifically, one side of the multilayer waveguide array 2 is coupled to the lens 3, and the waveguides are spaced from each other by less than forty microns.

More specifically, the lens 3 is one of a Grin lens, a spherical lens and an aspheric lens, which is used for suppressing the divergence of light during transmission and reducing loss, and the lens 3 is integrally assembled with the multilayer waveguide array 2 through a glass circular tube 4.

In the invention, a V-shaped groove 6 is processed on a multilayer waveguide array 2, and an incident optical fiber array 1 is arranged in the V-shaped groove and is covered with a cover plate 5. Light passes through the incident optical fiber array 1, passes through the lens 3, reaches the MEMS rotating mirror 7, is reflected by the lens to change the traveling direction of the light, reflected light enters a certain optical waveguide to be emitted after passing through the lens 3, each layer of multilayer waveguide array 2 comprises m waveguides, and mxn channel optical switches can be realized in total. The lens 3 and the multilayer waveguide array 2 are fixed integrally by a glass circular tube 4.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An optical switch structure, characterized in that it comprises an incident optical fiber array (1), a multilayer waveguide array (2), a lens (3), a glass tube (4), a cover plate (5), a V-groove ( 6) and a MEMS rotating mirror (7), the V-shaped groove (6) is located at the top of one layer of the multilayer waveguide array (2), and the incident optical fiber array (1) is arranged in the V-shaped groove (6) , the cover plate (5) is arranged above the incident fiber array (1), the glass tube (4) is arranged on the right side of the multilayer waveguide array (2), and the lens (3) is arranged on the glass circle Inside the tube (4), the MEMS mirror (7) is arranged on the side of the lens (3) away from the multilayer waveguide array (2), and one of the incident fibers in the incident fiber array (1) is used as the incident light , the remaining incident fibers in the incident fiber array (1) can be used as outgoing fibers or spare fibers.

2 . The optical switch structure according to claim 1 , wherein the incident optical fiber array ( 1 ) is integrated with the multilayer waveguide array ( 2 ). 3 .

3 . The optical switch structure according to claim 1 , wherein one side of the multilayer waveguide array ( 2 ) is coupled and connected to the lens ( 3 ), and the spacing between the waveguides is less than forty microns. 4 .

4. An optical switch structure according to claim 1, characterized in that, the lens (3) is one of a Grin lens, a spherical lens or an aspherical lens, and the lens (3) passes through glass The circular tube (4) is assembled with the multilayer waveguide array (2).