High-speed optical module receiving end assembly

Abstract

The utility model discloses a receiving end assembly of a high-speed optical module, which belongs to the technical field of optical devices and comprises a Receptacle optical interface, an optical fiber, a capillary tube, a lens, a wavelength division multiplexer, an array lens, a prism and a substrate, the optical fiber is used for transmitting light, the capillary tube, the lens, the wavelength division multiplexer, the array lens and the prism are fixed on the substrate, the Receptacle optical interface is connected with the optical fiber, and the optical fiber is connected with the substrate. The lens is located between the capillary tube and the wavelength division multiplexer, the array lens is located between the wavelength division multiplexer and the prism, the capillary tube converges light rays and enables the light rays to enter the lens, the lens enables collimated light converged by the capillary tube to enter the wavelength division multiplexer, the wavelength division multiplexer demultiplexes wavelengths, four paths of parallel light are formed and enter the array lens, and the array lens is located between the prism and the array lens. The array lens gathers incident light, and the gathered light beam is emitted from the prism and then gathers to the focus position. According to the invention, four light beams of 0.75 Pitch are converted into four light beams of 0.25 Pitch by using the turning prism; according to the invention, four light beams with the interval of 0.25 mm can be realized at the receiving end of the optical module.

Description

Technical Field

[0001] The utility model relates to the technical field of optical devices, in particular to a receiving end component of a high-speed optical module. Background Art

[0002] As Figure 1 、 Figure 2 shown, a common non-hermetic packaging receiving end component includes an optical fiber 20, a collimator 90, a glass block 100, a wavelength division multiplexer 50, an array lens 60, a prism 70 and a substrate 80. Components such as a laser are mounted on one end of the receiving end component, so that light of a specified wavelength is incident on the collimator 90 through the optical fiber 20; the collimated light beam after passing through the collimator 90 is then split into four beams of light by the wavelength division action of the wavelength division multiplexer 50, and enters the array lens 60 from the output end of the wavelength division multiplexer 50, and four optical paths with a spacing of 0.75 mm are formed at the focal point through the turning of the prism 70.

[0003] In the existing structure, the curvature of the collimator 90 cannot meet the requirements of a small spot with 0.25 Pitch, and the structure of the wavelength division multiplexer 50 also cannot meet the design requirements of 0.25 Pitch. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a receiving end component of a high-speed optical module. In this application, a lens is used to replace the common collimator to meet the requirements of a small spot; in this application, a turning prism is used to convert four beams of light with 0.75 Pitch into 0.25 Pitch; at the receiving end of the optical module, four beams of light with a spacing of 0.25 mm can be realized.

[0005] The purpose of the utility model is realized by adopting the following technical scheme:

[0006] A high-speed optical module receiving end component includes an optical fiber, a wavelength division multiplexer, an array lens, a prism, and a substrate. The optical fiber is used to transmit light. The high-speed optical module receiving end component further includes a Receptacle optical interface, a capillary, a lens, and a turning prism. The capillary, the lens, the wavelength division multiplexer, the turning prism, the array lens, and the prism are fixed on the substrate. The Receptacle optical interface is connected to the optical fiber. The lens is located between the capillary and the wavelength division multiplexer. The turning prism is located between the wavelength division multiplexer and the array lens. The capillary converges the light and incident it on the lens. The lens makes the collimated light converged by the capillary incident on the wavelength division multiplexer. The wavelength division multiplexer demultiplexes the wavelength to form 4 parallel light beams incident on the turning prism and then incident on the array lens. The array lens converges the incident light. After the converged light beam exits from the prism, it converges to the focal point position.

[0007] Further, a high-reflection film is plated on the prism.

[0008] Further, the array lens is a spherical structure with protrusions.

[0009] Further, the capillary, the lens, the wavelength division multiplexer, the turning prism, the array lens, and the prism are fixed on the substrate by ultraviolet-cured glue.

[0010] Further, the lens is a silicon lens.

[0011] Further, the array lens is made of glass or silicon.

[0012] Compared with the prior art, the high-speed optical module receiving end component of the present utility model includes a Receptacle optical interface, an optical fiber, a capillary, a lens, a wavelength division multiplexer, a turning prism, an array lens, a prism, and a substrate. The optical fiber is used to transmit light. The capillary, the lens, the wavelength division multiplexer, the turning prism, the array lens, and the prism are fixed on the substrate. The Receptacle optical interface is connected to the optical fiber. The lens is located between the capillary and the wavelength division multiplexer. The turning prism is located between the wavelength division multiplexer and the array lens. The capillary converges the light and incident it on the lens. The lens makes the collimated light converged by the capillary incident on the wavelength division multiplexer. The wavelength division multiplexer demultiplexes the wavelength to form 4 parallel light beams incident on the turning prism and then incident on the array lens. The array lens converges the incident light. After the converged light beam exits from the prism, it converges to the focal point position. In this application, a lens is used to replace the common collimator to meet the requirement of a small light spot; in this application, a turning prism is used to convert four light beams with a 0.75Pitch into a 0.25Pitch; in the receiving end of the optical module of this application, four light beams with a spacing of 0.25 mm can be realized. Description of the Drawings

[0013] Figure 1 Schematic structural diagram of the receiving end component of a high-speed optical module in the background technology;

[0014] Figure 2 Front view of the receiving end component of a high-speed optical module in the background technology;

[0015] Figure 3 Schematic structural diagram of the receiving end component of the high-speed optical module of the present utility model;

[0016] Figure 4 For Figure 3 Front view of the receiving end component of the high-speed optical module of;

[0017] Figure 5 For Figure 3 Top view of the receiving end component of the high-speed optical module of.

[0018] In the figure: 10, Receptacle optical interface; 20, optical fiber; 30, capillary; 40, lens; 50, wavelength division multiplexer; 60, array lens; 70, prism; 80, substrate; 90, collimator; 100, glass block; 110, turning prism. Detailed Description of the Preferred Embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be another intermediate component through which it is fixed. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the specification of this utility model herein are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] In this embodiment:

[0023] As Figure 3 shown, the receiving end assembly of this high-speed optical module includes a Receptacle optical interface 10, an optical fiber 20, a capillary 30, a lens 40, a wavelength division multiplexer 50, an array lens 60, a prism 70, a substrate 80, and a turning prism 110.

[0024] The Receptacle optical interface 10 is used to directly dock with an LC connector and connect to a laser.

[0025] The optical fiber 20 is used to transmit light rays and is connected to the Receptacle optical interface 10. In this embodiment, the Receptacle optical interface 10 and the optical fiber 20 are fixedly connected by glue.

[0026] The capillary 30 is used to converge the light rays transmitted by the optical fiber 20 and incident them on the lens 40. In this embodiment, the capillary 30 is square.

[0027] The lens 40 is located between the capillary 30 and the wavelength division multiplexer 50. The lens 40 incident the collimated light converged by the capillary 30 on the wavelength division multiplexer 50. In this embodiment, the lens 40 is made of silicon material.

[0028] The wavelength division multiplexer 50 is used to demultiplex wavelengths to form multiple parallel light beams. In this embodiment, the wavelength division multiplexer 50 divides one light beam into four light beams. In this embodiment, a smaller and more refined wavelength division multiplexer 50 with 0.25 Pitch is used.

[0029] The turning prism 110 is located between the wavelength division multiplexer 50 and the array lens 60. The turning prism 110 reduces the interval between the four light beams to 0.25 mm; and then injects them into the array lens 60 at an interval of 0.25 Pitch.

[0030] The array lens 60 is located between the turning prism 110 and the array lens 60. Through the converging effect, the four-way light beams are respectively reflected by the prism 70 to the focal position. In this embodiment, the array lens 60 is made of glass or silicon. Specifically, the array lens 60 is processed by grinding and polishing, and can also be processed by die forming or etching. The array lens 60 has a spherical structure with protrusions and can converge the incident light.

[0031] The prism 70 is usually coated with a high-reflection film or utilizes the total reflection principle, and can deflect the light beam by about 90 degrees. After the converged light beam exits from the prism 70, it converges to the focal position.

[0032] Generally, users will place the PD (photodiode) at the focal position. Thus, the demultiplexed 4-way light is respectively received by 4 PDs, and the optical signal is converted into an electrical signal.

[0033] The substrate 80 is used to carry functional components such as the capillary 30, the lens 40, the wavelength division multiplexer 50, the turning prism 110, the array lens 60, and the prism 70. In this embodiment, the material of the substrate 80 is glass. The substrate 80 is a rectangular plate. Functional components such as the capillary 30, the lens 40, the wavelength division multiplexer 50, the turning prism 110, the array lens 60, and the prism 70 are directly fixedly installed on the substrate 80 through ultraviolet-cured epoxy resin glue.

[0034] In this application, after the light is emitted from the laser through the Receptacle optical interface 10, it passes through the optical fiber 20, the capillary 30, the lens 40, the wavelength division multiplexer 50, the turning prism 110, the array lens 60, and the prism 70, and is divided into four light beams with a spacing of 0.25 mm, and converges to the focal position. This application meets the requirement of a small light spot by using the lens 40 to replace the common collimator 90; this application uses the turning prism 110 to convert the four light beams with a 0.75 Pitch into a 0.25 Pitch; at the receiving end of the optical module of this application, four light beams with a spacing of 0.25 mm can be realized.

[0035] The above embodiments only represent several implementation manners of the present utility model, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can be made. These are all equivalent modifications and evolutions of the above embodiments based on the essence of the present utility model, and all belong to the protection scope of the present utility model.

Claims

1. A receiving end component of a high-speed optical module, comprising an optical fiber, a wavelength division multiplexer, an array lens, a prism, and a substrate. The optical fiber is used for transmitting light, and is characterized in that: The high-speed optical module receiving end component also includes a receptacle optical interface, a capillary, a lens, and a turning prism. The capillary, the lens, the wavelength division multiplexer, the turning prism, the array lens, and the prism are fixed on the substrate. The receptacle optical interface is connected to the optical fiber. The lens is located between the capillary and the wavelength division multiplexer. The turning prism is located between the wavelength division multiplexer and the array lens. The capillary converges the light and makes it incident on the lens. The lens makes the collimated light converged by the capillary incident on the wavelength division multiplexer. The wavelength division multiplexer demultiplexes the wavelengths to form 4 parallel lights that are incident on the turning prism and then on the array lens. The array lens converges the incident light, and the converged light beam is emitted from the prism and converges to a focal position.

2. The receiving end component of the high-speed optical module according to claim 1, characterized in that: The prism is plated with a high reflection film.

3. The receiving end component of the high-speed optical module according to claim 1, characterized in that: The array lens is a spherical structure with protrusions.

4. The receiving end component of the high-speed optical module according to claim 1, characterized in that: The capillary, lens, wavelength division multiplexer, turning prism, array lens and prism are fixed on the substrate by ultraviolet light-cured glue.

5. The receiving end component of the high-speed optical module according to claim 1, characterized in that: The lens is a silicon lens.

6. The receiving end component of the high-speed optical module according to claim 1, wherein: The array lens is made of glass or silicon.

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