CN209992705U

CN209992705U - Multi-channel optical switch structure

Info

Publication number: CN209992705U
Application number: CN201920459006.3U
Authority: CN
Inventors: 卢立建; 张可文; 肖光钧; 胡思飞
Original assignee: HENGYANG ZHONGKE PHOTOELECTRON Co Ltd
Current assignee: HUNAN ZHONGKE PHOTOELECTRIC Co.,Ltd.
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2020-01-24
Anticipated expiration: 2029-04-04

Abstract

The utility model relates to the technical field of optical fiber communication, in particular to a multi-channel optical switch structure, which comprises an input array disc, an output array disc, a rotary disc and a 1xN splitter; a plurality of collimators are arranged on the input array disk and the output array disk along the circumference of the axes of the input array disk and the output array disk; the turntable is made of opaque materials and is provided with a notch or a through hole; the gap or through hole is located on an optical path formed between the collimator of the input array disk and the collimator of the output array disk. The utility model discloses an invention aim at provides a multichannel photoswitch structure, adopts the utility model provides a technical scheme has solved current multichannel photoswitch fifty percent discount reflection lens's shape and machining precision and is higher to the technical problem that requires high to drive unit control accuracy and control direction.

Description

Multi-channel optical switch structure

Technical Field

The utility model belongs to the technical field of the fiber communication technique and specifically relates to a multichannel photoswitch structure is related to.

Background

An optical switch is an optically passive device with one or more selectable transmission ports that functions to physically switch or logically operate optical signals in an optical transmission line or integrated optical circuit. In fiber optic transmission systems, optical switches are used for switching between multiple monitors, LANs, multiple light sources, detectors and protected ethernet. The optical fiber testing system is used for optical fiber, optical fiber equipment testing and network testing, and an optical fiber sensing multi-point monitoring system. The optical switch is classified into various types such as 1 × 1, 1 × 2, 1 × N, 2 × 2, 2 × N, M × N, and the like according to the number of input and output ports, and has different applications in different cases.

At present, the number of types of mechanical optical switches is more, but the number of channels is less, such as 1x1, 1x2, 2x 2; the other cascade optical switch formed by connecting a plurality of 1xN optical switches in series has the advantages of complex structure, poor precision, large loss and high failure rate. Application number CN201110041533.0, application date 20110221 disclose a mechanical optical switch, which rotates the direction of an input end optical fiber collimator, so that an output light beam enters a corresponding output end collimator after being modulated by a lens, thereby achieving the effect of switching optical channels, the lens adopted by the scheme has a regular shape, and the position corresponding to each output end optical fiber collimator needs to ensure the relationship between the incident angle and the refraction angle, so that the light beam enters the corresponding output end optical fiber collimator after being refracted, the shape and the processing precision of the lens are high, and the difficulty of the lens manufacturing process is high, and the processing cost is high; application numbers CN201210355355.3, application date 20120921, and application numbers CN201310278603.3, application date 20130704 disclose a multi-channel motor optical switch, all drive a mechanical arm through a motor, make an input optical fiber collimator at the front end of the mechanical arm opposite to an output optical fiber collimator, because the input optical fiber collimator is connected with an optical fiber, the mechanical arm is in a rotation process, the optical fiber can be wound, so that the mechanical arm can only rotate within a limited angle, there can be some effects that the output optical fiber collimator cannot realize the conduction of an optical path, and the requirements on the control precision and the control direction of the motor are higher.

The optical switch acts as an optically passive device. An optical switch is an optical device with one or more selectable transmission ports that functions to physically switch or logically operate optical signals in an optical transmission line or integrated optical circuit. In fiber optic transmission systems, optical switches are used for switching between multiple monitors, LANs, multiple light sources, detectors and protected ethernet. The optical fiber testing system is used for optical fiber, optical fiber equipment testing and network testing, and an optical fiber sensing multi-point monitoring system.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an invention aim at provides a multichannel photoswitch structure, adopts the utility model provides a technical scheme has solved current multichannel photoswitch fifty percent discount reflection lens's shape and machining precision and is higher to the technical problem that requires high to drive unit control accuracy and control direction.

In order to solve the technical problem, the utility model provides a multichannel optical switch structure, which comprises a coaxial input array disc and an output array disc, a turntable coaxially arranged between the input array disc and the output array disc, and a 1xN splitter communicated with external optical fibers; a plurality of collimators are arranged on the input array disk and the output array disk along the circumference of the axes of the input array disk and the output array disk, and the collimators of the input array disk and the collimators of the output array disk are uniformly opposite; the 1xN splitters are connected with the collimators of the input array disk one by one; the turntable is made of opaque materials and is provided with a notch or a through hole; the gap or through hole is located on an optical path formed between the collimator of the input array disk and the collimator of the output array disk.

Preferably, the turntable is arranged at an included angle of not 90 degrees between the circumferential part where the notch or the through hole is located and the light path direction of the collimator.

Preferably, the side surfaces of the rotary discs facing the input array disc are arranged in staggered edges.

From the above, use the utility model discloses can obtain following beneficial effect: the utility model discloses be provided with the carousel of taking breach or through-hole between input array dish and output array dish, realize the light path through breach or through-hole on the carousel and switch on between input array dish and output array dish, reach the effect of switching output collimator, compact structure, but the output large capacity expands, and the reliability is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive faculty.

Fig. 1 is a perspective view of a multi-channel optical switch structure according to an embodiment of the present invention;

fig. 2 is a side view of the multi-channel optical switch structure according to the embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

In order to solve the above technical problem, the present embodiment provides a multi-channel optical switch structure. Before explaining the embodiments of the present invention, the working principle and the structural features of the existing multi-channel optical switch are introduced to help understand the related schemes in the embodiments of the present invention.

In the prior art, optical switches are classified into 1 × 1, 1 × 2, 1 × N, 2 × 2, 2 × N, M × N, etc. according to the number of input and output ports of the optical switch, in the 1 × N optical switch, light beams at an input end are refracted to a corresponding output end by a refraction member, or the input end is moved to a corresponding output end by a driving member to complete optical path switching, so there are mechanical optical switches and on-switching of the output end is completed by a lens or a motor as used in the reference documents mentioned in the background art.

The mechanical optical switch has fewer channels, or has a complex structure, poor precision, large loss and high failure rate; the adopted lens realizes light path switching, and has higher shape and processing precision to the lens, thus causing the lens to have higher manufacturing process difficulty and high processing cost; the motor is adopted to drive the input end to realize light path switching, the rotating arm is influenced by the optical cable at the input end, the rotating angle is limited, an output optical fiber collimator conduction blind angle exists, and the requirements on the control precision and the control direction of the motor are high.

Therefore, the present embodiment provides a multi-channel optical switch structure, which also uses a motor to complete the switching between the input end and the output end, and is different from the prior art, and the multi-channel optical switch structure provided in the present embodiment uses a unique structural feature to conduct the light beam between the input end and the output end. The specific scheme is as follows:

referring to fig. 1-2, the multi-channel optical switch structure provided in this embodiment includes an input array tray 10, an output array tray 20, a turntable 30, and a 1xN splitter 40 connected to an external optical fiber.

The input array disk 10 and the output array disk 20 are coaxially arranged, a plurality of collimators 50 are circumferentially arranged on the input array disk 10 and the output array disk 20 along the axial centers of the input array disk and the output array disk, and the collimators 50 of the input array disk 10 are uniformly opposite to the collimators 50 of the output array disk 20. If there is no barrier between the collimators 50 of the input array disk 10 and the collimators 50 of the output array disk 20, an optical path is formed.

The turntable 30 is coaxially disposed between the input array disk 10 and the output array disk 20, and the turntable 30 is made of a light-tight material, and is provided with a notch 31 or a through hole, wherein the notch 31 or the through hole is located on a light path formed between the collimator 50 of the input array disk 10 and the collimator 50 of the output array disk 20. In order to avoid the influence of the position on the optical path other than the notch 31 on the turntable 30, the turntable 30 is made of a non-light-transmitting material, which may be a non-light-reflecting material or a light-absorbing material, so as to reduce the reflected light.

Wherein the 1xN splitters 40 are communicated with the external optical fiber, and the 1xN splitters 40 are connected with the collimators 50 of the input array tray 10 one by one. The number of collimators 50 of the input array disk 10 and the output array disk 20 may be two or more, and the splitter 40 may be made into 1x2, 1x3, … 1x32 or higher number of channels of the splitter 40 according to the number of collimators 50.

In this embodiment, the input array disk 10 and the output array disk 20 are both in a disk shape, U-shaped positioning grooves are uniformly formed on the peripheries of the input array disk 10 and the output array disk 20, and the collimator 50 is fixed in the U-shaped positioning grooves by glue. It should be noted that, although the U-shaped positioning slot is adopted in the present embodiment, the positioning slot may be processed into a V-shaped, a square or other positioning slot according to the processing requirements and the processing difficulty, as long as the collimator 50 can be installed and fixed in the positioning slot.

In order to switch the optical path, i.e. to switch the optical path between the light beam of the collimator 50 of the input array disk 10 and the light beam of the collimator 50 of the output array disk 20, a driving component is disposed at the center of the rotating disk 30, the driving component may be a stepping motor, and the stepping motor may be mounted on the table top through a transparent bracket, so as to prevent the driving component and the transparent bracket from blocking the optical path. The rotating disc 30 is rotated by a precise stepping motor, the light beam of the collimator 50 of the input array disc 10 is aligned with the notch 31 on the rotating disc 30, and then the light path is conducted, and the rotation angle is determined according to the selection of the collimator 50 on the output array disc 20.

The embodiment of the utility model provides a multichannel photoswitch structure is provided with the carousel 30 of taking breach 31 or through-hole between input array dish 10 and output array dish 20, realizes the light path through breach 31 or through-hole on the carousel 30 and switches on between input array dish 10 and output array dish 20, reaches the effect of switching output collimator 50, compact structure, but the output large capacity expands, and the reliability is high.

Example 2

The present embodiment provides a multi-channel optical switch structure, which also includes an input array disk 10 and an output array disk 20 coaxially disposed, a turntable 30 interposed between the input array disk 10 and the output array disk 20, and a 1xN splitter 40 in communication with an external optical fiber.

Wherein, a plurality of collimators 50 are arranged on the input array disk 10 and the output array disk 20 along the axial center circumference, and the collimators 50 of the input array disk 10 are uniformly opposite to the collimators 50 of the output array disk 20. A notch 31 or a through hole is formed in the turntable 30, and the notch 31 or the through hole is located on an optical path formed between the collimator 50 of the input array disk 10 and the collimator 50 of the output array disk 20. The 1xN splitters 40 communicate with external optical fibers, and the 1xN splitters 40 are connected one by one with the collimators 50 of the input array tray 10.

As a further improvement of the technical solution, this embodiment is different from embodiment 1 in that the turntable 30 is disposed at an angle of not 90 ° with respect to the optical path direction of the collimator 50 by using a circumferential portion where the notch 31 or the through hole is located, for example, a prismatic or angled surface is located on the turntable 30 except the through hole, and a side surface facing the input array disk 10 is disposed as a staggered edge, so that the turntable 30 can be used to reflect light, and the reflected light is prevented from interfering with the light of the collimator 50 of the input array disk 10, thereby reducing the echo.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims

1. A multi-channel optical switch structure, characterized by: the optical fiber coupler comprises an input array disc, an output array disc, a rotary disc and a 1xN splitter, wherein the input array disc and the output array disc are coaxial, the rotary disc is coaxially arranged between the input array disc and the output array disc, and the 1xN splitter is communicated with an external optical fiber; a plurality of collimators are arranged on the input array disk and the output array disk along the circumference of the axes of the input array disk and the output array disk, and the collimators of the input array disk and the collimators of the output array disk are uniformly opposite; the 1xN splitters are connected with the collimators of the input array disk one by one; the turntable is made of opaque materials and is provided with a notch or a through hole; the gap or through hole is located on an optical path formed between the collimator of the input array disk and the collimator of the output array disk.

2. The multi-channel optical switch fabric of claim 1, wherein: the rotary disc is arranged in a way that the circumferential part where the notch or the through hole is positioned forms an included angle of not 90 degrees with the light path direction of the collimator.

3. A multi-channel optical switch fabric as defined in claim 2, wherein: and one side surface of the turntable facing the input array disk is provided with staggered edges.