阅读说明：本技术 一种基于准直器2×2机械式光开关 (2X 2 mechanical optical switch based on collimator ) 是由 李芳� 许立图 姚付强 刘亚辉 许铖 于 2019-10-17 设计创作，主要内容包括：本发明公开了一种基于准直器2×2机械式光开关,其中：基座设置在底部,基座的上表面两侧分别固定安装有第一玻璃条和第二玻璃条,第一光纤准直器固定安装在第一玻璃条上,第二光纤准直器固定安装在第二玻璃条上；红外单晶硅反射镜和继电器均安装在基座上表面,且红外单晶硅反射镜设置在第一光纤准直器和第二光纤准直器之间,继电器设置在红外单晶硅反射镜侧面；红外单晶硅反射镜上镀制高反膜,通过继电器驱动红外单晶硅反射镜,控制红外单晶硅反射镜是否插入光路实现光从不同端口输出。本发明体积小,结构简单,操作方便,维修容易；在传输过程中对光的衰减较小,提高了回波损耗；成本低,生产周期短,在实际的应用过程中控制更加方便。(The invention discloses a 2 x 2 mechanical optical switch based on a collimator, wherein: the base is arranged at the bottom, a first glass strip and a second glass strip are respectively and fixedly arranged on two sides of the upper surface of the base, the first optical fiber collimator is fixedly arranged on the first glass strip, and the second optical fiber collimator is fixedly arranged on the second glass strip; the infrared monocrystalline silicon reflector and the relay are both arranged on the upper surface of the base, the infrared monocrystalline silicon reflector is arranged between the first optical fiber collimator and the second optical fiber collimator, and the relay is arranged on the side surface of the infrared monocrystalline silicon reflector; the infrared monocrystalline silicon reflector is plated with a high-reflection film, and the relay drives the infrared monocrystalline silicon reflector to control whether the infrared monocrystalline silicon reflector is inserted into a light path so as to realize the output of light from different ports. The invention has small volume, simple structure, convenient operation and easy maintenance; the attenuation of light is small in the transmission process, so that the return loss is improved; the cost is low, the production period is short, and the control is more convenient in the actual application process.)

1. A collimator-based 2 x 2 mechanical optical switch, comprising: the device comprises a base (1), a first optical fiber collimator (2), an infrared monocrystalline silicon reflector (3), a second optical fiber collimator (4), a first glass strip (5), a relay (6) and a second glass strip (7); wherein:

the optical fiber collimator comprises a base (1), a first glass strip (5) and a second glass strip (7) which are fixedly arranged on two sides of the upper surface of the base (1) respectively, a first optical fiber collimator (2) which is fixedly arranged on the first glass strip (5), and a second optical fiber collimator (4) which is fixedly arranged on the second glass strip (7); the infrared monocrystalline silicon reflector (3) and the relay (6) are both arranged on the upper surface of the base (1), the infrared monocrystalline silicon reflector (3) is arranged between the first optical fiber collimator (2) and the second optical fiber collimator (4), and the relay (6) is arranged on the side surface of the infrared monocrystalline silicon reflector (3); the infrared monocrystalline silicon reflector (3) is plated with a high-reflection film, the relay (6) drives the infrared monocrystalline silicon reflector (3) to control whether the infrared monocrystalline silicon reflector (3) is inserted into a light path to realize light output from different ports.

2. The collimator based 2 x 2 mechanical optical switch according to claim 1, wherein the first fiber collimator (2) is an entrance fiber collimator and the second fiber collimator (4) is an exit fiber collimator.

3. The collimator-based 2 x 2 mechanical optical switch according to claim 1, wherein the first fiber collimator (2) and the second fiber collimator (4) are both dual-fiber collimators, including a pigtail and a c-lens; a certain interval is arranged between the tail fiber and the c-lens, and the end face at the interval forms an inclination angle of 8 degrees.

4. Collimator based 2 x 2 mechanical optical switch according to claim 1, characterized in that the infrared single crystal silicon mirror (3) is not perpendicular to the optical axis of the fiber collimator (4) with a tilt angle of 0.05 degrees.

5. The collimator-based 2 x 2 mechanical optical switch according to claim 1, wherein the first glass strip (5) and the second glass strip (7) are both U-shaped groove structures formed by two triangular prism-shaped glass strips, and the fiber collimators are respectively fixed on the base (1) through the corresponding U-shaped groove structures.

6. The collimator based 2 x 2 mechanical optical switch according to claim 2, characterized in that when the relay (6) is in the power-off state, the light output by the first fiber collimator (2) at the incident end is transmitted freely over a distance and received by the second fiber collimator (4) at the exit end.

7. Collimator-based 2 x 2 mechanical optical switch according to claim 2, characterized in that when the relay (6) is in the power-on state, the relay (6) drives the infrared single-crystal silicon mirror (3) to move to the optical paths of the first (2) and second (4) fiber collimators.

8. The collimator-based 2 x 2 mechanical optical switch according to claim 7, wherein the light output from the first optical fiber collimator (2) is reflected by the infrared monocrystalline silicon reflector (3) and then output to another tail fiber port of the first optical fiber collimator (2).

Technical Field

The invention relates to the technical field of optical passive devices, in particular to a 2X 2 mechanical optical switch based on a collimator.

Background

As an important part in the Optical communication technology, an Optical Switch (Optical Switch, 0S) is an Optical path switching device having one or more optional transmission ports, and functions to physically Switch or logically operate an Optical signal in an Optical transmission line or an integrated Optical path. The application range mainly comprises: the protection switching system of the optical network, the light source control in the optical fiber test, the real-time monitoring system of the network performance, the test of the optical device, the construction of the switching core of the 0XC equipment, the optical add/drop multiplexing, the optical test, the optical sensing system, etc. The optical switch can be divided into a plurality of types such as 1 × 1, 1 × 2, 1 × N, 2 × 2, and 2 × N, M × N according to the number of input and output ports, and they have different applications in different cases. The most widely used at present are the 1 × 2 and 2 × 2 mechanical optical switches. The mechanical optical switch can directly couple light to the output end by moving the optical fiber, and adopts a prism and a reflector to switch the light path, so that the light is directly sent to or reflected to the output end. The 2 x 2 mechanical optical switch has two optical fibers at the input end and the output end respectively, and can complete two connection states, namely parallel connection and cross connection.

The application environment of the existing mechanical optical switch is generally outdoor, so that various sealed components are corroded by long-term environmental factors (factors such as air temperature and humidity) in the past, the optical transmission performance is greatly reduced, and the service life of the device is greatly shortened. Hermetic packaging of mechanical optical switches for use in such environments is therefore important. The existing metalized and packaged mechanical optical switch has the defects of complex structure, more parts, complex optical path conversion realized by an optical element, time consumption for optical path adjustment, complex assembly and welding process, low production efficiency caused by complex production process, more defective products in production and no contribution to mass production of products.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a collimator-based 2 × 2 mechanical optical switch, aiming at the defects in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the invention provides a 2 x 2 mechanical optical switch based on a collimator, which comprises: the device comprises a base, a first optical fiber collimator, an infrared monocrystalline silicon reflector, a second optical fiber collimator, a first glass strip, a relay and a second glass strip; wherein:

the base is arranged at the bottom, a first glass strip and a second glass strip are respectively and fixedly arranged on two sides of the upper surface of the base, the first optical fiber collimator is fixedly arranged on the first glass strip, and the second optical fiber collimator is fixedly arranged on the second glass strip; the infrared monocrystalline silicon reflector and the relay are both arranged on the upper surface of the base, the infrared monocrystalline silicon reflector is arranged between the first optical fiber collimator and the second optical fiber collimator, and the relay is arranged on the side surface of the infrared monocrystalline silicon reflector; the infrared monocrystalline silicon reflector is plated with a high-reflection film, and the relay drives the infrared monocrystalline silicon reflector to control whether the infrared monocrystalline silicon reflector is inserted into a light path so as to realize the output of light from different ports.

Furthermore, the first optical fiber collimator is an incident optical fiber collimator, and the second optical fiber collimator is an emergent optical fiber collimator.

Furthermore, the first optical fiber collimator and the second optical fiber collimator are double-optical fiber collimators and comprise tail fibers and c-lens lenses; a certain interval is arranged between the tail fiber and the c-lens, and the end face at the interval forms an inclination angle of 8 degrees.

Furthermore, the infrared monocrystalline silicon reflector of the invention is not perpendicular to the optical axis of the optical fiber collimator, and has an inclination angle of 0.05 degrees.

Furthermore, the first glass strip and the second glass strip are both U-shaped groove structures formed by two triangular prism-shaped glass strips, and the optical fiber collimators are respectively fixed on the base through the corresponding U-shaped groove structures.

Further, when the relay is in a power-off state, light output by the first optical fiber collimator at the incident end is freely transmitted for a certain distance and received by the second optical fiber collimator at the emergent end.

Further, when the relay is in a power supply state, the relay drives the infrared monocrystalline silicon reflector to move to the optical paths of the first optical fiber collimator and the second optical fiber collimator.

Furthermore, the light output by the first optical fiber collimator of the present invention is reflected by the infrared monocrystalline silicon reflector and then output to the other tail fiber port of the first optical fiber collimator.

The invention has the following beneficial effects: the collimator-based 2X 2 mechanical optical switch is simple in structure by only designing one reflector; the monocrystalline silicon reflector is driven by electromagnetism, so that the installation and adjustment are convenient, the optical index is stable, and the volume is small; the integration degree of the system is high; through using current spare part, processing production efficiency is high, and low in production cost is suitable for the mass production.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

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

FIG. 2 is a diagram of a collimator-based 2 × 2 mechanical optical switch according to an embodiment of the present invention;

FIG. 3 is a diagram of a collimator-based 2 × 2 mechanical optical switch according to an embodiment of the present invention;

FIG. 4 is an optical schematic diagram of a collimator-based 2 × 2 mechanical optical switch according to an embodiment of the present invention;

fig. 5 is an optical schematic diagram of a collimator-based 2 × 2 mechanical optical switch according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, a collimator-based 2 × 2 mechanical optical switch according to an embodiment of the present invention includes: the device comprises a base 1, a first optical fiber collimator 2, an infrared monocrystalline silicon reflector 3, a second optical fiber collimator 4, a first glass strip 5, a relay 6 and a second glass strip 7; wherein:

the base 1 is arranged at the bottom, a first glass strip 5 and a second glass strip 7 are respectively and fixedly arranged on two sides of the upper surface of the base 1, the first optical fiber collimator 2 is fixedly arranged on the first glass strip 5, and the second optical fiber collimator 4 is fixedly arranged on the second glass strip 7; the infrared monocrystalline silicon reflector 3 and the relay 6 are both arranged on the upper surface of the base 1, the infrared monocrystalline silicon reflector 3 is arranged between the first optical fiber collimator 2 and the second optical fiber collimator 4, and the relay 6 is arranged on the side surface of the infrared monocrystalline silicon reflector 3; the infrared monocrystalline silicon reflector 3 is plated with a high-reflection film, the relay 6 drives the infrared monocrystalline silicon reflector 3, and whether the infrared monocrystalline silicon reflector 3 is inserted into a light path is controlled to realize light output from different ports.

The first optical fiber collimator 2 is an incident optical fiber collimator, and the second optical fiber collimator 4 is an emergent optical fiber collimator. The first optical fiber collimator 2 and the second optical fiber collimator 4 are double-optical fiber collimators and comprise tail optical fibers and c-lens; a certain interval is arranged between the tail fiber and the c-lens, and the end face at the interval forms an inclination angle of 8 degrees. In order to improve the return loss, the end face at the interval part adopts an inclined angle with a common engineering experience angle of 8 degrees, and then the return loss of the collimator can be ensured to be more than 70dB

Because the end face of the tail fiber is introduced with an angle of 8 degrees, the optical path in an optical system is slightly changed, and in order to improve the return loss and ensure the coupling efficiency of more than 95%, through optical simulation analysis, the optical axis of the infrared monocrystalline silicon reflector 3 and the optical axis of the optical fiber collimator are not vertical, and an inclination angle of 0.05 degree is formed.

The first glass strip 5 and the second glass strip 7 are both U-shaped groove structures formed by two triangular prism-shaped glass strips, and the optical fiber collimators are respectively fixed on the base 1 through the corresponding U-shaped groove structures.

When the relay 6 is in a power-off state, light output by the first optical fiber collimator 2 at the incident end is freely transmitted for a certain distance and received by the second optical fiber collimator 4 at the emergent end. When the relay 6 is in a power supply state, the relay 6 drives the infrared monocrystalline silicon reflector 3 to move to the optical paths of the first optical collimator 2 and the second optical collimator 4. The light output by the first optical fiber collimator 2 is reflected by the infrared monocrystalline silicon reflector 3 and then output to the other tail fiber port of the first optical fiber collimator 2.

In another embodiment of the invention: the mechanical optical switch based on the collimator 22 comprises a collimator, a base, an infrared monocrystalline silicon reflector, a relay and a glass strip playing a role in fixing.

The optical fiber collimator is a dual-optical fiber collimator and comprises a first optical fiber collimator (with two ports of port1 and port 2) and a second optical fiber collimator (with two ports of port3 and port 4), wherein the first optical fiber collimator is an incident optical fiber collimator, and the second optical fiber collimator is an emergent optical fiber collimator. The positional relationship thereof refers to fig. 2 and 3.

The infrared monocrystalline silicon reflector is plated with a high-reflection film, the infrared monocrystalline silicon reflector is not completely vertical to the optical axis and has an inclination angle of 0.05 degrees, and the placement position and the plating surface are shown in figures 2 and 4.

When the relay is in a power-off state, after signal light is input into the incident optical fiber collimator through a tail fiber port1 or a port2, the output light is freely transmitted for a certain distance, received by the emergent optical fiber collimator, and finally output through a tail fiber port4 or a port3 respectively. As shown in fig. 5. The mechanical optical switch is in an on state.

When the relay is in a power supply state, the relay control reflecting mirror is inserted into the light paths of the two collimators, and signal light enters the incident fiber collimator from the tail fiber port1 or the port2 and then respectively enters the port2 or the port1 through reflection by the reflecting mirror. The off state of the mechanical optical switch is realized.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.