CN219302727U

CN219302727U - High-speed optical module receiving end assembly

Info

Publication number: CN219302727U
Application number: CN202320785724.6U
Authority: CN
Inventors: 张佳伟
Original assignee: Suzhou Jialan Zhiyuan Electronic Technology Co ltd
Current assignee: Suzhou Jialan Zhiyuan Electronic Technology Co ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-07-04
Anticipated expiration: 2033-04-11

Abstract

The utility model discloses a high-speed optical module receiving end assembly, which belongs to the field of optical fiber networks and comprises a substrate, an incident collimator, a wavelength division multiplexer, a reflecting prism and a lens array, wherein the incident collimator, the wavelength division multiplexer and the reflecting prism are arranged on the substrate, the wavelength division multiplexer is positioned between the incident collimator and the reflecting prism, the reflecting prism extends out of the substrate, the lens array is arranged at the bottom of the part of the reflecting prism extending out of the substrate, parallel light emitted from the incident collimator reaches the wavelength division multiplexer to demultiplex the wavelength to form multiple paths of parallel light incident on the reflecting prism, the reflecting prism deflects the light beam to the lens array, and the lens array converges the light beam.

Description

High-speed optical module receiving end assembly

Technical Field

The utility model relates to the field of optical fiber networks, in particular to a high-speed optical module receiving end assembly.

Background

Among high-speed optical modules, the 800G optical module is already the standard of the latest generation of optical transmission systems and has great market potential. As shown in fig. 1 to 3, an input collimator 101, a wavelength division multiplexer 102, a lens array 103, and a reflecting prism 104 are sequentially mounted on a substrate 105. Light emitted from the entrance collimator 101 is first wavelength demultiplexed by the wavelength division multiplexer 102 to form 4 parallel light paths. The 4 parallel light beams are respectively incident on the lens array 103, and the lens array 103 condenses the incident light beams. The 4 beams will be converged by the lens array 103 and incident on the reflecting prism 104. The reflecting prism 104 deflects the light beam by about 90 degrees and then converges to the focal position. Typically the user will place the PD (photodiode) in the focal position. So that the demultiplexed 4 paths of light are received by the 4 PDs, respectively, converting the optical signals into telecommunications.

The existing end receiving assembly is large in size and is not beneficial to miniaturization of the device.

Disclosure of Invention

In order to overcome the defects in the prior art, one of the purposes of the present utility model is to provide a small-sized receiving end assembly.

One of the purposes of the utility model is realized by adopting the following technical scheme:

the utility model provides a high-speed optical module receiving end subassembly, includes base plate, incidence collimator, wavelength division multiplexer, reflecting prism and lens array, incidence collimator wavelength division multiplexer and reflecting prism install in the base plate, the wavelength division multiplexer is located incidence collimator and between the reflecting prism, the reflecting prism stretches out the base plate, lens array install in the reflecting prism stretches out the bottom of base plate part, follow the parallel light that the incidence collimator sent arrives wavelength division multiplexer demultiplexes, forms multichannel parallel light incidence on the reflecting prism, the reflecting prism deflects the light beam to lens array, lens array gathers the light beam.

Further, the lens array and the substrate are positioned on the same straight line.

Further, the reflecting prism is made of a high refractive index material.

Further, the reflecting prism deflects the light by an angle of 89-91 degrees.

Further, the substrate is made of glass.

Further, the incident collimator, the wavelength division multiplexer and the reflecting prism are fixed on the substrate through glue.

Further, the glue is epoxy resin glue.

Further, the reflecting prism is in a right trapezoid shape.

Further, the lens array is located below the hypotenuse of the right trapezoid.

Further, the incident collimator, the wavelength division multiplexer and the reflecting prism are positioned on the same straight line.

Compared with the prior art, the high-speed optical module receiving end component has the advantages that the lens array is arranged at the bottom of the part, extending out of the substrate, of the reflecting prism, parallel light emitted from the incident collimator reaches the wavelength division multiplexer to de-multiplex the wavelengths, multiple paths of parallel light are formed to be incident on the reflecting prism, the reflecting prism deflects the light beams to the lens array, the lens array converges the light beams, the size of the high-speed optical module receiving end component is reduced, and miniaturization of the high-speed optical module receiving end component is facilitated.

Drawings

Fig. 1 is a perspective view of a receiving end of a conventional high-speed optical module in the background art;

FIG. 2 is a view of a light path of a receiving end of a conventional high-speed optical module in the background art;

FIG. 3 is a view of another view angle of a receiving end of a conventional high-speed optical module in the background art;

FIG. 4 is a perspective view of a high-speed optical module receiving end assembly according to the present utility model;

FIG. 5 is another perspective view of the high-speed optical module termination component of FIG. 4;

FIG. 6 is a view of the high-speed optical module of FIG. 4 from a view angle;

FIG. 7 is an optical path diagram of another view of the high-speed optical module receiving end assembly of FIG. 4.

In the figure: 101. 301, an incident collimator; 102. 302, a wavelength division multiplexer; 103. 305, a lens array; 104. 303, a reflecting prism; 105. 304, a substrate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or be present as another intermediate element through which the element is fixed. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, 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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 4 to 7, the high-speed optical module transceiver of the present utility model includes an incident collimator 301, a wavelength division multiplexer 302, a reflective prism 303, a substrate 304, and a lens array 305.

The entrance collimator 301 is fixed to the substrate 304, and the entrance collimator 301 can emit parallel light.

Wavelength division multiplexer 302 is capable of demultiplexing wavelengths to form multiple parallel light paths. Specifically, in the present embodiment, the wavelength division multiplexer 302 forms 4 parallel light paths. The wavelength division multiplexer adopts a 0.5mm interval scheme design, has small size and meets the size requirement of 400G or 800G high-speed optical modules.

The reflecting prism 303 is made of high-refractive index material, a high-reflectivity film is not required to be plated, and the light beam is deflected by 89-91 degrees by utilizing the principle of total reflection. In this embodiment, the beam is deflected 90 degrees. The cross section of the reflecting prism 303 is isosceles trapezoid, in order to further reduce the volume of the high-speed optical module receiving end assembly, a small block is cut off from the inclined surface tail end of the reflecting prism 303, and the reflection of light of the reflecting prism 303 is not affected on the premise of reducing the volume. The lens array 305 collects light and the lens array 305 is etched.

The substrate 304 is made of glass. The use of substrates 304 of different heights can satisfy the application of different scheme PD (photo sensor) heights. The substrate 304 functions to carry the entrance collimator 301, the wavelength division multiplexer 302, and the reflection prism 303.

The substrate 304 serves to carry functional elements such as wavelength division multiplexers, collimators, etc. And (3) adopting a full-glue process, and using ultraviolet-cured epoxy resin glue to adhere and fix the epoxy resin glue.

When the high-speed optical module receiving end assembly is assembled, the incident collimator 301, the wavelength division multiplexer 302 and the lens array 305 are fixed on the substrate 304 sequentially through glue. Specifically, the glue is epoxy resin glue, and ultraviolet light curing is adopted to fix the glue. The wavelength division multiplexer 302 is located between the entrance collimator 301 and the lens array 305. The end of the lens array 305 protrudes from the substrate 304, and the projection of the hypotenuse of the lens array 305 does not impinge on the substrate 304. The lens array 305 is fixed to the reflecting prism 303. The photosensor is located at the focal point of the lens array 305. So that the demultiplexed 4 paths of light are received by 4 PDs respectively, or may be a 4-channel PD array, to convert the optical signals into electrical signals. The lens array 305 is at the end of the optical path, and the focal position after focusing is not affected by the reflecting prism 303.

When the high-speed optical module receiving end component is used, parallel light emitted from the incidence collimator 301 reaches the wavelength division multiplexer 302 to demultiplex the wavelength to form 4 paths of parallel light to be incident on the reflecting prism 303; the reflecting prism 303 deflects the light beam by about 90 °; the light is collected by the lens array 305, and the PD (photodiode) is placed at the focal position, so that the demultiplexed 4 paths of light are received by 4 PDs respectively, or may be a 4-channel PD array, and the optical signal is converted into an electrical signal.

The high-speed optical module receiving end component uses the 0.5mm space wavelength division multiplexer to reduce the volume of the high-speed optical module receiving end component, and is beneficial to miniaturization of the high-speed optical module receiving end component.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, it is possible to make several modifications and improvements without departing from the concept of the present utility model, which are equivalent to the above embodiments according to the essential technology of the present utility model, and these are all included in the protection scope of the present utility model.

Claims

1. The utility model provides a high-speed optical module receives end subassembly, includes base plate, its characterized in that: the light beam focusing device comprises a substrate, and is characterized by further comprising an incidence collimator, a wavelength division multiplexer, a reflecting prism and a lens array, wherein the incidence collimator, the wavelength division multiplexer and the reflecting prism are arranged on the substrate, the wavelength division multiplexer is arranged between the incidence collimator and the reflecting prism, the reflecting prism stretches out of the substrate, the lens array is arranged at the bottom of the part of the reflecting prism, parallel light emitted from the incidence collimator reaches the wavelength division multiplexer to demultiplex the wavelength to form multiple paths of parallel light to be incident on the reflecting prism, the reflecting prism deflects the light beam to the lens array, and the lens array converges the light beam.

2. The high-speed optical module receiving end assembly according to claim 1, wherein: the lens array and the substrate are positioned on the same straight line.

3. The high-speed optical module receiving end assembly according to claim 1, wherein: the reflecting prism is made of a high refractive index material.

4. The high-speed optical module receiving end assembly according to claim 1, wherein: the angle of the reflecting prism for deflecting light is 89-91 degrees.

5. The high-speed optical module receiving end assembly according to claim 1, wherein: the substrate is made of glass.

6. The high-speed optical module receiving end assembly according to claim 1, wherein: the incidence collimator, the wavelength division multiplexer and the reflecting prism are fixed on the substrate through glue.

7. The high-speed optical module receiver assembly of claim 6, wherein: the glue is epoxy resin glue.

8. The high-speed optical module receiving end assembly according to claim 1, wherein: the reflecting prism is in a right trapezoid shape.

9. The high-speed optical module receiver assembly of claim 8, wherein: the lens array is located below the hypotenuse of the right trapezoid.

10. The high-speed optical module receiving end assembly according to claim 1, wherein: the incident collimator, the wavelength division multiplexer and the reflecting prism are positioned on the same straight line.