CN111998844A - ASE light source for spherical inertial navigation system - Google Patents

Abstract

The invention discloses an ASE light source for a spherical inertial navigation system, which is characterized in that the ASE light source comprises a bottom layer, a light source beam splitting layer, and a driving circuit layer arranged in layers from bottom to top. The invention adopts a layered structure type, which is convenient for assembly and modular in function, and can realize flexible switching of single-axis and three-axis according to actual needs; it is easy to maintain, and the functions of each layer are relatively independent. Maintaining a certain layer can minimally touch other components The present invention is suitable for structural installation with spherical system, and the lower component has a larger heat capacity and is connected with the system in a plane manner, which is beneficial to heat dissipation.

Description

An ASE Light Source for Spherical Inertial Navigation System

technical field

The invention belongs to the technical field of inertial navigation, and in particular relates to an ASE (Amplified Spontaneous Emission) light source for a spherical inertial navigation system.

Background technique

The ASE (Amplified Spontaneous Emission) light source is designed for production and laboratory experiments. The main part of the light source is a gain medium erbium-doped fiber and a high-performance pump laser. The unique atc and apc circuits ensure the stability of the output power by controlling the output of the pump laser. By adjusting the apc, the output power can be adjusted within a certain range. Easy and smart operation with remote control. It has the advantages of excellent wavelength stability, low spectral ripple, high output power, excellent optical power stability, and compact size. It can be used in fiber optic gyroscopes and fiber inertial navigation systems.

Whether in single-axis high-precision fiber optic gyroscopes or in three-axis fiber optic gyroscopes, the ASE light source is a key component. Not only the optical path characteristics and driving circuit characteristics should meet the product requirements, but also the structural adaptability should meet the product's requirements for ASE light sources, including installation, mechanics, environment and other aspects.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned shortcomings of the prior art, the present invention proposes an ASE light source for a spherical inertial navigation system, which adopts a layered structure type, is convenient for assembly, has modularized functions, and can realize the flexibility of single-axis and three-axis according to actual needs. switch. For realizing the above-mentioned technical purpose, the concrete technical scheme of the present invention is as follows:

An ASE light source for a spherical inertial navigation system, characterized in that the ASE light source is suitable for a spherical system with a radius not less than 160mm, and the ASE light source includes a bottom layer, a light source beam splitting layer, driver circuit layer, where,

The bottom layer includes a bottom base, a pump laser, an optical isolator, a wavelength division multiplexer, a gain flattening filter and a Faraday mirror arranged on the base base, the optical isolator and the wavelength division multiplexer The filter is located on one side of the pump laser, and the gain flattening filter and the Faraday mirror are located on the other side of the pump laser;

The light source beam splitting layer includes a 1×3 coupler, three 2×2 couplers, a pigtail outlet and a lower layer pigtail outlet;

The drive circuit layer includes a pump laser drive circuit and is electrically connected to the outside through a connector;

In the case of uniaxial output, the light source beam splitting layer is not needed, the pigtail is drawn out along the inner wall of the bottom base, and the driving circuit layer is fixed on the bottom base;

In the case of three-axis output, the pigtail is drawn out through the pigtail outlet after circling on the upper surface of the light source beam splitting layer for at least one week, and the driving circuit layer is fixed on the light source beam splitting layer.

Further, when the ASE light source is output in three axes, the pigtail can be split or combined and led out from the pigtail outlet.

Further, the bottom base is provided with installation grooves, including pump laser installation grooves, optical isolator installation grooves, wavelength division multiplexer installation grooves, gain flattening filter installation grooves, Faraday mirror installation grooves and the first 1× 3 Coupler mounting slots.

Further, the wavelength emitted by the pump laser is 980 nm.

The beneficial effects of the present invention are:

1. Hierarchical structure type, easy to assemble, functional modularization, can realize flexible switching of single axis, double axis and three axis according to actual needs;

2. It is easy to maintain, and the functions of each layer are relatively independent. When a layer is maintained, other components can be minimally touched;

3. The structure of the present invention is unique, which is suitable for the structural installation of the spherical system. The lower component has a large heat capacity, and is connected to the system in a plane way, which is conducive to heat dissipation.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below, and the features and advantages of the present invention will be more clearly understood by referring to the drawings. , the accompanying drawings are schematic and should not be construed as any limitation to the present invention. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative effort. in:

Fig. 1 is the structural representation of the present invention;

Figure 2(a) is a top view of the bottom layer;

Figure 2(b) is a top view of the light source beam splitting layer;

FIG. 2( c ) is a plan view of the driving circuit layer.

Description of reference numbers:

1-wavelength division multiplexer; 2-Faraday mirror; 3-pump laser; 4-gain flattening filter; 5-optical isolator; 6-bottom layer; 7-light source beam splitter; 8-1×3 coupling 9-drive circuit layer; 10-cover; 11-power tube; 12-socket; 13-2×2 coupler; 14-pigtail outlet; 15-lower pigtail outlet.

Detailed ways

In order to understand the above objects, features and advantages of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments may be combined with each other under the condition of no conflict.

Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. Example limitations.

Whether in single-axis high-precision fiber optic gyroscopes or in three-axis fiber optic gyroscopes, the ASE light source is a key component. Not only the optical path characteristics and driving circuit characteristics should meet the product requirements, but also the structural adaptability should meet the product's requirements for ASE light sources, including installation, mechanics, environment and other aspects.

As shown in Figure 1, Figure 2(a)-Figure 2(c), an ASE light source for spherical inertial navigation system, characterized in that the ASE light source is suitable for spherical systems with a radius of not less than 160mm, and the ASE light source includes The bottom layer 6, the light source beam splitting layer 7, and the driving circuit layer 9 are arranged in layers from bottom to top, wherein,

The bottom layer 6 includes a bottom base, a pump laser 3, an optical isolator 5, a wavelength division multiplexer 1, a gain flattening filter 4 and a Faraday mirror 2, an optical isolator 5 and a wavelength division multiplexer arranged on the base base. The device 1 is located on one side of the pump laser 3, and the gain flattening filter 4 and the Faraday mirror 2 are located on the other side of the pump laser 3;

The light source beam splitting layer 7 includes a 1×3 coupler 8 , three 2×2 couplers 13 , a pigtail fiber outlet 14 and a lower layer pigtail fiber outlet 15 ;

The drive circuit layer 9 includes a pump laser drive circuit, and is electrically connected to the outside through connectors;

In the case of uniaxial output, the light source beam splitting layer 7 is not needed, the pigtail is drawn out along the inner wall of the bottom base, and the driving circuit layer 9 is fixed on the bottom base;

In the case of triaxial output, the pigtail is drawn out through the pigtail fiber outlet 14 after circling on the upper surface of the light source beam splitting layer 7 for at least one week, and the driving circuit layer 9 is fixed on the light source beam splitting layer 7 .

When the ASE light source is triaxially output, the pigtail can be split or combined and led out from the pigtail outlet.

The bottom base is provided with installation grooves, including pump laser installation grooves, optical isolator installation grooves, wavelength division multiplexer installation grooves, gain flattening filter installation grooves and Faraday mirror installation grooves.

The wavelength emitted by the pump laser is 980 nm.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (4)

1. An ASE light source for a spherical inertial navigation system, characterized in that the ASE light source is suitable for a spherical system with a radius of not less than 160 mm, and the ASE light source includes a bottom layer, a light source beam splitting layered from bottom to top layer, driver circuit layer, wherein, The bottom layer includes a bottom base, a pump laser, an optical isolator, a wavelength division multiplexer, a gain flattening filter and a Faraday mirror arranged on the base base, the optical isolator and the wavelength division multiplexer The filter is located on one side of the pump laser, and the gain flattening filter and the Faraday mirror are located on the other side of the pump laser; The light source beam splitting layer includes a 1×3 coupler, three 2×2 couplers, a pigtail outlet and a lower layer pigtail outlet; The drive circuit layer includes a pump laser drive circuit and is electrically connected to the outside through a connector; In the case of uniaxial output, the light source beam splitting layer is not needed, the pigtail is drawn out along the inner wall of the bottom base, and the driving circuit layer is fixed on the bottom base; In the case of three-axis output, the pigtail is drawn out through the pigtail outlet after circling on the upper surface of the light source beam splitting layer for at least one week, and the driving circuit layer is fixed on the light source beam splitting layer. 2. The ASE light source for spherical inertial navigation system according to claim 1, characterized in that, when the ASE light source is triaxially output, the pigtail can be split or combined, and the pigtail exits from the pigtail. lead out. 3. a kind of ASE light source for spherical inertial navigation system according to claim 1, is characterized in that, described bottom base is provided with installation groove, comprises pump laser installation groove, optical isolator installation groove, wavelength division multiplexer. User mounting slot, gain flattening filter mounting slot and Faraday mirror mounting slot. 4 . The ASE light source for a spherical inertial navigation system according to claim 1 , wherein the wavelength emitted by the pump laser is 980 nm. 5 .

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