Optical module receiving end assembly

Abstract

The utility model discloses a receiving end assembly of an optical module, which belongs to the field of optical elements and comprises a substrate, a wavelength division multiplexer, a prism, an optical fiber, a silicon lens and a conversion lens, and the wavelength division multiplexer, the prism, the silicon lens and the conversion lens are fixed on the substrate. The optical fiber, the silicon lens, the wavelength division multiplexer, the conversion lens and the prism are arranged in sequence, light output by the optical fiber is converged by the silicon lens and then enters the wavelength division multiplexer, the wavelength division multiplexer divides one path of light into multiple paths of light beams, the multiple paths of light beams enter the prism after turning spacing reduction of the conversion lens, and the prism reflects the multiple paths of light beams to a focus position. A collimator in the prior art is replaced by the silicon lens, so that the requirement of small light spots is met, the distance between multiple light beams is reduced by the conversion lens, and input light beams with any distance can be converted into light beams with small distances by adjusting parameters such as curvature of the conversion lens.

Description

Technical Field

[0001] This utility model relates to the field of optical components, and in particular to optical module receiver components. Background Technology

[0002] Please see Figure 1 In the prior art, light of a specified wavelength from a laser is incident on a collimator 110 via an optical fiber 102. The collimated beam after passing through the collimator 110 is then split into four beams by a wavelength division multiplexer 105. These beams then enter an array lens 107 from the output end of the wavelength division multiplexer 105, and are deflected by a prism 108, forming four optical paths spaced 0.75 mm apart at the focal point. Thus, light emitted from the laser passes through a series of components, including the wavelength division multiplexer 105, to form four beams spaced 0.75 mm apart.

[0003] The structure of this receiver uses a collimator 110. The collimator 110 cannot meet the requirements of small-spacing light spots, and the wavelength division multiplexer 105 cannot achieve the design requirements of small spacing such as 0.25mm. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide a beam that can split light into multiple beams with small intervals.

[0005] One of the objectives of this utility model is achieved through the following technical solution:

[0006] An optical module receiver assembly includes a substrate, a wavelength division multiplexer (WDM), a prism, and an optical fiber. The optical module receiver assembly also includes a silicon lens and a conversion lens. The WDM, the prism, the silicon lens, and the conversion lens are fixed to the substrate. The optical fiber, the silicon lens, the WDM, the conversion lens, and the prism are arranged sequentially. The light output from the optical fiber is focused by the silicon lens and then enters the WDM. The WDM splits one beam into multiple beams. The multiple beams are narrowed by the conversion lens and then enter the prism. The prism reflects the multiple beams to the focal point.

[0007] Furthermore, the optical module receiver assembly also includes a capillary tube, which is fixed to the substrate and located between the optical fiber and the silicon lens. The optical fiber is connected to the capillary tube.

[0008] Furthermore, the capillary is a square capillary.

[0009] Furthermore, the conversion lens has an arc surface facing the wavelength division multiplexer.

[0010] Furthermore, the optical module receiver assembly also includes an optical interface, which is fixed to the optical fiber.

[0011] Furthermore, the optical interface is fixed to the optical fiber with adhesive.

[0012] Furthermore, the wavelength division multiplexer, the prism, the silicon lens, and the conversion lens are fixed to the substrate by UV-cured epoxy resin adhesive.

[0013] Furthermore, the prism is located at the end of the substrate and extends from the end of the substrate.

[0014] Furthermore, the substrate is made of glass.

[0015] Compared to existing technologies, the optical module receiver assembly of this utility model also includes a silicon lens, a conversion lens, a wavelength division multiplexer, a prism, and the silicon lens and conversion lens are fixed on the substrate. The optical fiber, silicon lens, wavelength division multiplexer, conversion lens and prism are arranged in sequence. The light output from the optical fiber is focused by the silicon lens and then enters the wavelength division multiplexer. The wavelength division multiplexer splits one beam into multiple beams. The multiple beams are reduced in distance by the conversion lens and then enter the prism. The prism reflects the multiple beams to the focal position. Through the above design, the silicon lens is used to replace the collimator in the prior art, thereby meeting the requirement of small light spot. The conversion lens reduces the distance between multiple beams. By adjusting the curvature and other parameters of the conversion lens, the input beam of arbitrary distance can be converted into a small-distance beam. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an optical module receiver component in the prior art;

[0017] Figure 2 This is a perspective view of the optical module receiver assembly of this utility model;

[0018] Figure 3 for Figure 1 A side view of the optical module receiver component;

[0019] Figure 4 for Figure 1 A top view of the optical module receiver component.

[0020] In the diagram: 101, optical interface; 102, optical fiber; 103, capillary; 104, silicon lens; 105, wavelength division multiplexer; 106, conversion lens; 107, array lens; 108, prism; 109, substrate; 110, collimator. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Please see Figures 2 to 4 The optical module receiver component of this application includes an optical interface 101, an optical fiber 102, a capillary tube 103, a silicon lens 104, a wavelength division multiplexer 105, a conversion lens 106, an array lens 107, a prism 108, and a substrate 109.

[0025] The optical interface 101 directly connects to the LC connector and the laser, thereby directing light into the optical fiber 102 for transmission within it. The optical interface 101 and the optical fiber 102 are secured together with adhesive.

[0026] The capillary tube 103 is fixed to the substrate 109, and the end of the optical fiber 102 is fixed to the capillary tube 103. The capillary tube 103 is made of glass, and in this embodiment, the capillary tube 103 is square and has a hollow structure. The end of the optical fiber 102 is fixed to the capillary tube 103 with glue.

[0027] A silicon lens 104 is fixed to a substrate 109 and is located between a capillary tube 103 and a wavelength division multiplexer 105. The silicon lens 104 focuses and collimates the light transmitted through the optical fiber 102.

[0028] A wavelength division multiplexer 105 is fixed to a substrate 109 and is located between a silicon lens 104 and a conversion lens 106. The wavelength division multiplexer 105 has a wavelength division function, splitting a single optical beam into multiple beams. In this embodiment, the wavelength division multiplexer 105 splits a single optical beam into four beams, with the four beams having the same spacing.

[0029] The conversion lens 106 is used to reduce the spacing between multiple beams. The conversion lens 106 is fixed to the substrate 109 and is located between the wavelength division multiplexer 105 and the array lens 107. The conversion lens 106 is a cylindrical lens, and has an arc surface on the side near the wavelength division multiplexer 105. The arc surface refracts light, thus reducing the spacing between the multiple beams. In this embodiment, the spacing between adjacent beams is reduced from 0.75 mm to 0.25 mm.

[0030] The array lens 107 is fixed to the substrate 109 and is located between the conversion lens 106 and the prism 108. The array lens 107 converges multiple light beams.

[0031] Prism 108 is fixed to substrate 109, and is located at the end of substrate 109 and extends out from substrate 109. Prism 108 has a reflective surface, and prism 108 reflects the light beam to the focal position. In this way, after the light is emitted from the laser, it is split into four beams with a spacing of 0.25 mm after passing through a series of components.

[0032] The substrate 109 is made of glass and is used to support the capillary 103, silicon lens 104, wavelength division multiplexer 105, conversion lens 106, array lens 107, and prism 108. The capillary 103, silicon lens 104, wavelength division multiplexer 105, conversion lens 106, array lens 107, and prism 108 are directly fixed to the substrate 109 with UV-cured epoxy resin adhesive.

[0033] In the optical module receiver assembly, the optical interface 101, optical fiber 102, capillary tube 103, silicon lens 104, wavelength division multiplexer 105, conversion lens 106, array lens 107, and prism 108 are arranged sequentially. The optical module receiver assembly of this application uses silicon lens 104 to replace the collimator 110 in the prior art, thereby meeting the requirement of a small light spot. The conversion lens 106 reduces the spacing between multiple beams. By adjusting parameters such as the curvature of the conversion lens 106, beams of arbitrary spacing (e.g., 0.75 pitch, 0.5 pitch) can be converted into beams of small spacing (e.g., 0.25 pitch, 0.125 pitch).

[0034] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. An optical module receiver assembly, comprising a substrate, a wavelength division multiplexer, a prism, and an optical fiber, characterized in that: The optical module receiver assembly further includes a silicon lens and a conversion lens. The wavelength division multiplexer, the prism, the silicon lens, and the conversion lens are fixed to the substrate. The optical fiber, the silicon lens, the wavelength division multiplexer, the conversion lens, and the prism are arranged sequentially. The light output from the optical fiber is focused by the silicon lens and then enters the wavelength division multiplexer. The wavelength division multiplexer splits one beam into multiple beams. The multiple beams are narrowed by the conversion lens and then enter the prism. The prism reflects the multiple beams to the focal point.

2. The optical module receiver assembly according to claim 1, characterized in that: The optical module receiver assembly also includes a capillary tube, which is fixed to the substrate and located between the optical fiber and the silicon lens. The optical fiber is connected to the capillary tube.

3. The optical module receiver assembly according to claim 2, characterized in that: The capillary is a square capillary.

4. The optical module receiver assembly according to claim 1, characterized in that: The conversion lens has an arc surface, which faces the wavelength division multiplexer.

5. The optical module receiver assembly according to claim 1, characterized in that: The optical module receiver assembly also includes an optical interface, which is fixed to the optical fiber.

6. The optical module receiver assembly according to claim 5, characterized in that: The optical interface is fixed to the optical fiber with glue.

7. The optical module receiver assembly according to claim 1, characterized in that: The wavelength division multiplexer, the prism, the silicon lens, and the conversion lens are fixed to the substrate by UV-cured epoxy resin adhesive.

8. The optical module receiver assembly according to claim 1, characterized in that: The prism is located at the end of the substrate and extends from the end of the substrate.

9. The optical module receiver assembly according to claim 1, characterized in that: The substrate is made of glass.

Images