CN210348116U

CN210348116U - Acousto-optic modulator of multi-optical fiber collimator

Info

Publication number: CN210348116U
Application number: CN201921572198.5U
Authority: CN
Inventors: 吴砺; 张建英; 赵艳芳; 方向一; 贺坤; 林磊
Original assignee: Fuzhou Photop Optics Co ltd
Current assignee: Fuzhou Photop Optics Co ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-04-17
Anticipated expiration: 2029-09-20

Abstract

The utility model discloses an acousto-optic modulator of a multi-optical fiber collimator, which comprises a first multi-optical fiber collimator, a first multi-prism optical prism, an acousto-optic modulation crystal, a second multi-prism optical prism and a second multi-optical fiber collimator which are arranged in sequence; for the multi-fiber collimator with the same wavelength, a plurality of groups of etalons (such as a multi-prism optical prism) refract input light into mutually parallel light beams to enter an acousto-optic modulation crystal, and for the multi-fiber collimator with different wavelengths, the input light adopts a plurality of groups of standard mirrors to deflect refraction included angles among the optical fiber light beams into different wavelength diffraction angle differences; in addition, the scheme uses a multi-optical fiber collimator with parallel arranged optical fibers to collimate optical signals, and uses a multi-prism optical prism to refract the optical signals to be parallel to each other or form diffraction angles with different wavelengths, so that the interval between the light beams can be minimized; thereby reducing the size of the acousto-optic crystal and being easier to install.

Description

Acousto-optic modulator of multi-optical fiber collimator

Technical Field

The utility model belongs to the technical field of the optical communication device and specifically relates to an acousto-optic modulator of many optical collimator.

Background

The existing acousto-optic modulator mostly utilizes a plurality of optical fiber collimators to be arranged in parallel on the arrangement scheme of the optical fiber collimators, and the structural scheme adopting the form can cause that an acousto-optic modulation crystal with enough size is required to receive a light beam signal input by the optical fiber collimators or the acousto-optic modulation crystal with enough large output surface is required to output the light beam signal because of the size problem of the optical fiber collimators, so that the light path size of the crystal needs to be larger, the packaging size of the whole optical device is also larger, small normalization cannot be achieved, and the application range is limited.

Disclosure of Invention

To the situation of the prior art, the object of the present invention is to provide an acousto-optic modulator of a multi-fiber collimator, which is convenient to install, and can make the design size of acousto-optic crystal miniaturized and compact in structure.

In order to realize the technical purpose, the utility model discloses a technical scheme does:

an acousto-optic modulator of a multi-optical fiber collimator comprises a first multi-optical fiber collimator, a first multi-edge optical prism, an acousto-optic modulation crystal, a second multi-edge optical prism and a second multi-optical fiber collimator which are arranged in sequence, wherein signal beams input by the first multi-optical fiber collimator are refracted by the first multi-edge optical prism into parallel beams, then enter the acousto-optic modulation crystal for modulation, then are output to the second multi-edge optical prism, and then are emitted into the second multi-optical fiber collimator by the second multi-edge optical prism.

Furthermore, the scheme also comprises a substrate which relatively fixedly installs the first multi-fiber collimator and the first multi-prism optical prism.

Further, the first multi-fiber collimator and the second multi-fiber collimator are both dual-fiber collimators.

Further, the first multi-fiber collimator and the second multi-fiber collimator are both three-fiber collimators.

Further, the first multi-edge optical prism and the second multi-edge optical prism are both triangular prisms.

Further, the first multi-edge optical prism and the second multi-edge optical prism are both isosceles trapezoid prisms.

Adopt foretell technical scheme, compared with the prior art, the utility model, its beneficial effect who has is: the scheme adopts a pair of multi-optical fiber collimators, a pair of multi-prism optical prisms and an acousto-optic modulation crystal to form a plurality of groups of acousto-optic modulators with the same wavelength or multiple wavelengths, wherein for the multi-optical fiber collimators with the same wavelength, a plurality of groups of etalons (such as the multi-prism optical prisms) refract input light into mutually parallel light beams to enter the acousto-optic modulation crystal, and for the multi-optical fiber collimators with different wavelengths, a plurality of groups of standard lenses are adopted for input light to deflect included refraction angles among the optical fiber light beams into different wavelength diffraction angle differences; in addition, the scheme uses a multi-optical fiber collimator with parallel arranged optical fibers to collimate optical signals, and uses a multi-prism optical prism to refract the optical signals to be parallel to each other or form diffraction angles with different wavelengths, so that the interval between the light beams can be minimized; thereby reducing the size of the acousto-optic crystal and being easier to install.

Drawings

The invention will be further elucidated with reference to the drawings and the detailed description:

FIG. 1 is a schematic diagram of the optical path of the present invention when the same wavelength signal beam is input;

FIG. 2 is a schematic diagram of the optical path of the present invention under the condition of double filtering;

fig. 3 is a schematic diagram of the optical path matching between the multi-fiber collimator and the multi-prism optical prism when the multi-fiber collimator of the present invention is of a three-fiber structure;

FIG. 4 is a diagram similar to that shown in FIG. 3 illustrating one of other embodiments of the multi-fiber collimator and the multi-prism;

FIG. 5 is a second embodiment of the multi-fiber collimator and multi-prism similar to the schematic diagram shown in FIG. 3;

fig. 6 is one of schematic diagrams illustrating the multi-fiber collimator and the multi-prism optical prism of the present invention being fixedly mounted on the substrate;

fig. 7 is a second schematic diagram illustrating the multi-fiber collimator and the multi-prism optical prism being fixedly mounted on the substrate according to the present invention.

Detailed Description

As shown in fig. 1 or 2, the acousto-optic modulator of the multi-fiber collimator of the present invention includes a first multi-fiber collimator 1, a first multi-prism optical prism 2, an acousto-optic modulation crystal 3, a second multi-prism optical prism 4 and a second multi-fiber collimator 5, which are sequentially arranged, referring to fig. 1, a signal beam inputted from the first multi-fiber collimator 1 is refracted by the first multi-prism optical prism 2 into a parallel beam, enters the acousto-optic modulation crystal 3 for modulation, and is outputted to the second multi-prism optical prism 4, and the modulated signal beam is then incident to the second multi-fiber collimator 5 by the second multi-prism optical prism 4, whereas, a signal beam inputted from the second multi-fiber collimator 5 is refracted by the second multi-prism optical prism 4 into a parallel beam, enters the acousto-optic modulation crystal 3 for modulation, and is outputted to the first multi-prism 2, and the modulated signal beam is then incident to the first multi-fiber collimator 1 by the first multi-prism 2, wherein fig. 2 shows a schematic diagram of the light path implementation of the solution of the present invention under the condition of double filtering.

As an embodiment of the present disclosure, both the first multi-fiber collimator 1 and the second multi-fiber collimator 5 may be dual-fiber collimators.

Further, the first polygonal optical prism 1 and the second polygonal optical prism 5 are both triangular prisms.

Referring to fig. 3, as a second embodiment of the present disclosure, the first multi-fiber collimator 1 and the second multi-fiber collimator 5 are both three-fiber collimators, and for the three-fiber collimator, the first multi-prism 2 and the second multi-prism 4 may be isosceles trapezoid prisms, so that the signal light input into the first multi-prism 2 from the first multi-fiber collimator 1 or the signal light input into the second multi-prism 4 from the second multi-fiber collimator 5 is corrected to be parallel to each other, or a difference in diffraction included angle is formed between different wavelengths.

For the signal beam correction of the first multi-fiber collimator 1, it can also be adjusted by the arrangement scheme of the optical prism 2 as shown in fig. 4 or fig. 5, and the second multi-fiber collimator is the same, which is not repeated herein.

Referring to fig. 6 or 7, the present embodiment further includes a substrate 6 for fixedly mounting the first multi-fiber collimator 1 and the first multi-prism optical prism 2 relative to each other.

While only the preferred embodiments of the invention have been disclosed, it is to be understood that variations and modifications of the disclosed embodiments may be possible, and that alternative and equivalent various components of the embodiments may be known to those skilled in the art, and it will be apparent to those skilled in the art that the invention may be embodied in other forms, structures, arrangements, proportions, and with the use of specific elements thereof, without departing from the spirit or essential characteristics thereof.

Claims

1. An acousto-optic modulator of a multi-fiber collimator, characterized by: the signal beam input by the first multi-fiber collimator is refracted into parallel beams by the first multi-fiber prism, enters the acousto-optic modulation crystal for modulation, is output to the second multi-fiber prism, and then is transmitted into the second multi-fiber collimator by the second multi-fiber prism.

2. The acousto-optic modulator of a multi-fiber collimator according to claim 1, characterized in that: the multi-fiber collimator further comprises a substrate which fixedly installs the first multi-fiber collimator and the first multi-prism optical prism relatively.

3. The acousto-optic modulator of a multi-fiber collimator according to claim 1, characterized in that: the first multi-fiber collimator and the second multi-fiber collimator are both dual-fiber collimators.

4. The acousto-optic modulator of a multi-fiber collimator according to claim 1, characterized in that: the first multi-fiber collimator and the second multi-fiber collimator are both three-fiber collimators.

5. The acousto-optic modulator of a multi-fiber collimator according to claim 1, characterized in that: the first multi-edge optical prism and the second multi-edge optical prism are both triangular prisms.

6. The acousto-optic modulator of a multi-fiber collimator according to claim 1, characterized in that: the first multi-edge optical prism and the second multi-edge optical prism are isosceles trapezoid prisms.