CN219574423U

CN219574423U - 800G optical module receiving end assembly

Info

Publication number: CN219574423U
Application number: CN202223347537.4U
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: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-08-22
Anticipated expiration: 2032-12-13

Abstract

The utility model relates to an 800G optical module receiving end assembly, which comprises a plurality of incident collimators, a wavelength division multiplexer, a lens array, a reflecting prism and a substrate; the light beam focusing device comprises a plurality of incident collimators, a wavelength division multiplexer, a lens array and a reflecting prism, wherein the plurality of incident collimators, the wavelength division multiplexer, the lens array and the reflecting prism are fixed on a substrate, parallel light emitted by the plurality of incident collimators reaches the wavelength division multiplexer to perform wavelength demultiplexing, a plurality of paths of parallel light are formed to be incident on the lens array, the lens array converges the incident light, and the converged light beam is converged to a focus position after being emitted from the reflecting prism. The utility model adopts 2 paths of collimated light to enter, the 8 th channel has small insertion loss, the application of low loss is satisfied, and the focal position difference between the 1 st channel and the 8 th channel caused by chromatic aberration is reduced.

Description

800G optical module receiving end assembly

Technical Field

The utility model relates to the technical field of optical modules, in particular to an 800G optical module receiving end assembly.

Background

With the development of networks, 800G optical modules are the latest generation of optical transmission systems in high-speed optical modules, and have great market potential. The structure of a conventional 800G integrated assembly (taking an 8-channel optical module receiving end as an example) is shown in fig. 1.

Light emitted from the entrance collimator 1 is first wavelength demultiplexed by the wavelength division multiplexer 2 to form 8 parallel light paths. The 8 parallel light beams are respectively incident on the lens array 3, and the lens array 3 generally has a convex spherical structure, so that the incident light beams can be converged. Therefore, the 8-path light beams are condensed by the lens array 103 and enter the reflection prism 4. The reflecting prism 4 is typically coated with a highly reflective film or uses the principle of total reflection to deflect the beam by about 90 degrees. The converged light beam is emitted from the reflecting prism 4 and then converged to the focal position. A typical user will place a PD (photodiode) in the focal position so that the demultiplexed 8 paths of light are received by 8 PDs, which may be array PDs, respectively, converting the optical signals into telecommunications.

The scheme is an integrated component of the 8-channel receiving end and is mainly applied to an 800G high-speed optical module. In the conventional scheme, the application of 800G can be completed by 2 4-channel integrated components through a circulator or a beam combiner. The structure of such an 800G integrated assembly has the following problems: the 8 th channel insertion loss value of the wavelength division multiplexer is larger; because of chromatic aberration, there is a difference in focal positions of the 1 st and 8 th channels.

Disclosure of Invention

To achieve the above and other advantages and in accordance with the purpose of the present utility model, an object of the present utility model is to provide an 800G optical module receiving end assembly including a plurality of incident collimators, a wavelength division multiplexer, a lens array, a reflecting prism, and a substrate; the light beam focusing device comprises a substrate, a plurality of incident collimators, a wavelength division multiplexer, a lens array and a reflecting prism, wherein the incident collimators, the wavelength division multiplexer, the lens array and the reflecting prism are fixed on the substrate, parallel light emitted by the incident collimators reaches the wavelength division multiplexer to de-multiplex the wavelength to form a plurality of parallel light beams which are incident on the lens array, the lens array converges the incident light, and the converged light beams are converged to a focus position after exiting from the reflecting prism.

Further, the number of the incident collimators is 2, namely a first incident collimator and a second incident collimator.

Further, the parallel light emitted from the first incident collimator and the second incident collimator reaches the wavelength division multiplexer to demultiplex the wavelength to form 8 paths of parallel light.

Further, the reflecting prism is plated with a high-reflection film.

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

Further, the substrate fixes the incidence collimator, the wavelength division multiplexer, the lens array and the reflecting prism through ultraviolet light curing glue.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides an 800G optical module receiving end component, which adopts 2 paths of collimated light incidence, has small insertion loss of an 8 th channel, meets the application of low loss, and reduces the focus position difference between the 1 st channel and the 8 th channel caused by chromatic aberration.

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings. Specific embodiments of the present utility model are given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of a conventional 800G integrated assembly;

fig. 2 is a top view of an 800G optical module receiving end assembly according to embodiment 1;

fig. 3 is a front view of an 800G optical module receiving end assembly according to embodiment 1.

In the figure: 1. a first entrance collimator; 2. a wavelength division multiplexer; 3. a lens array; 4. a reflecting prism; 5. a substrate; 6. a second entrance collimator.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present utility model, and have no specific meaning per se. Thus, "module," "component," or "unit" may be used in combination.

Example 1

An 800G optical module receiving end assembly, as shown in fig. 2 and 3, comprises a plurality of incident collimators, a wavelength division multiplexer 2, a lens array 3, a reflecting prism 4 and a substrate 5; in this embodiment, the number of the incident collimators is 2, which are the first incident collimator 1 and the second incident collimator 6, respectively. The first incidence collimator 1, the second incidence collimator 6, the wavelength division multiplexer 2, the lens array 3 and the reflecting prism 4 are fixed on the substrate 5, parallel light emitted from the first incidence collimator 1 and the second incidence collimator 6 reaches the wavelength division multiplexer 2 to de-multiplex the wavelength, 8 paths of parallel light are formed and are incident on the lens array 3, the lens array 3 converges the incident light, and 8 paths of light beams are converged by the lens array 3 and are incident on the reflecting prism 4. The lens array 3 has a spherical structure with protrusions, and can collect incident light. The reflecting prism 4 is typically coated with a highly reflective film or uses the principle of total reflection to deflect the beam by about 90 degrees. The converged light beam is emitted from the reflecting prism 4 and then converged to the focal position.

The photodiodes are typically placed in focus by a user so that the demultiplexed 8-way light is received by the 8 photodiodes, respectively, or an array of 8-way photodiodes, which convert the optical signals into electrical signals.

The substrate 5 adopts ultraviolet light solidified glue to adhere and fix the incidence collimator, the wavelength division multiplexer 2, the lens array 3 and the reflecting prism 4.

The utility model adopts 2 paths of collimated light incidence, the 8 th channel has small insertion loss, and the application of low loss is satisfied; and the focus position difference between the 1 st channel and the 8 th channel due to chromatic aberration becomes small.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for the device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments in part.

The foregoing is illustrative of the embodiments of the present disclosure and is not to be construed as limiting the scope of the one or more embodiments of the present disclosure. Various modifications and alterations to one or more embodiments of this description will be apparent to those skilled in the art. Any modifications, equivalent substitutions, improvements, or the like, which are within the spirit and principles of one or more embodiments of the present disclosure, are intended to be included within the scope of the claims of one or more embodiments of the present disclosure.

Claims

1. An 800G optical module receiving end assembly, characterized in that: the device comprises a plurality of incident collimators, a wavelength division multiplexer, a lens array, a reflecting prism and a substrate; the number of the incident collimators is 2, namely a first incident collimator and a second incident collimator, the first incident collimator, the second incident collimator, the wavelength division multiplexer, the lens array and the reflecting prism are fixed on the substrate, parallel light emitted from the first incident collimator and the second incident collimator reaches the wavelength division multiplexer to demultiplex the wavelength to form 8 paths of parallel light to be incident on the lens array, the lens array converges the incident light, and the converged light beam is converged to a focus position after emerging from the reflecting prism.

2. The 800G optical module receiving end assembly of claim 1, wherein: the reflecting prism is plated with a high-reflection film.

3. The 800G optical module receiving end assembly of claim 1, wherein: the lens array is of a spherical structure with protrusions.

4. The 800G optical module receiving end assembly of claim 1, wherein: the substrate is fixed with the incident collimator, the wavelength division multiplexer, the lens array and the reflecting prism through ultraviolet light solidified glue.