WO2020063514A1

WO2020063514A1 - Optical module

Info

Publication number: WO2020063514A1
Application number: PCT/CN2019/107219
Authority: WO
Inventors: 鲍赟; 王安斌; 谢崇进
Original assignee: 阿里巴巴集团控股有限公司
Priority date: 2018-09-30
Filing date: 2019-09-23
Publication date: 2020-04-02

Abstract

An optical module, comprising a receiving end assembly, a transmitting end assembly, a light transmitting main module (3-1), a light transmitting sub-module (3-2), and a circuit board. The light transmitting main module (3-1) comprises a first lens group (3-1-1), a second lens group (3-1-2), an optical path conversion structure, and a housing (3-1-3) for fixedly assembling the components; the optical path conversion structure at least comprises a light filtering surface (3-1-4) and a reflecting surface (3-1-5); the light filtering surface (3-1-4) and the reflecting surface (3-1-5) are provided in transmission optical paths of the first lens group (3-1-1) and the second lens group (3-1-2), and light passing through the first lens group (3-1-1) is transmitted to the light filtering surface (3-1-4) and then is reflected into the second lens group (3-1-2) by the reflecting surface (31-5), or the light passing through the second lens group (3-1-2) is reflected by the reflecting surface (3-1-5) and then enters the light filtering surface (3-1-4), and is transmitted to the first lens group (3-1-1); the light transmitting sub-module (3-2) comprises a third lens group (3-2-1), and the third lens group (3-2-1) faces one side of the circuit board and is aligned with the transmitting end assembly or the receiving end assembly; a set position of the light transmitting sub-module (3-2) satisfies the case where the light reflected by the light filtering surface (3-1-4) is transmitted to the third lens group (3-2-1), or the light passing through the third lens group (3-2-1) is transmitted to the light filtering surface (3-1-4), and then is reflected to the first lens group (3-1-1) by the light filtering surface (3-1-4).

Description

Optical module

This application requires China with an application number of 201811161230.0, an invention name of "a type of optical module", which was filed on September 30, 2018, and an application number of 201811623273.6, and an invention name of "an type of optical module," which was submitted on December 28, 2018. The priority of a patent application, the entire contents of which are incorporated herein by reference.

Technical field

The present application relates to the field of optical transmission, and in particular to an optical module.

Background technique

In optical transmission networks, optical modules send and receive optical signals through optical fibers. The light-transmitting module is the core component of the optical path in the optical module. Its function is to couple the light emitted by the laser into the optical fiber, or receive the light emitted from the optical fiber into the photodetector. For example, QSFP DD 400G SR8 optical module integrates a 4-channel TX end (transmitting end) and a 4-channel RX end (receiving end).

But at present, each transmission channel of the optical module has only one function, either for sending the light emitted by the laser into the optical fiber, or for receiving the light emitted from the optical fiber into the photodetector.

Summary of the Invention

This application provides an optical module to solve the problem that each transmission channel of an existing optical module has only one function of sending or receiving optical signals.

The present application provides an optical module, including: a receiving end component, a transmitting end component, a transparent main module, a transparent sub-module, and a circuit board;

The receiving end component and the transmitting end component are disposed on the circuit board;

The light-transmitting module includes a first lens group, a second lens group, a light path conversion structure, and a housing fixedly assembled with the aforementioned components;

The coupling lenses of the first lens group are respectively aligned with the optical fibers connected to the optical module, and are used for coupling an optical signal to the optical fiber or deriving the optical signal from the optical fiber;

The second lens group is disposed on the transparent main module side facing the circuit board, and is aligned with the receiving end component or the transmitting end component;

The light path conversion structure includes at least a filter surface and a reflection surface; the filter surface and the reflection surface are disposed in the transmission light path of the first lens group and the second lens group, and satisfy the light passing through the first lens group. After transmitting to the filter surface and transmitting, reflecting on the reflecting surface to the second lens group, or after reflecting on the reflecting surface, the light from the second lens group enters the filtering surface and is transmitted to the first lens group;

The light transmitting sub-module includes a third lens group disposed between the light transmitting main module and the circuit board, and the third lens group faces one side of the circuit board, and is connected to the transmitting end component or receiving end. The components are aligned; the position of the light transmitting sub-module is such that the light reflected by the filter surface is transmitted to the third lens group, or the light transmitted by the third lens group is transmitted to the filter surface and then reflected by the filter surface. To the first lens group.

Optionally, the third lens group is aligned with the receiving component; the second lens group is aligned with the transmitting component.

Optionally, the second lens group is aligned with the receiving component; the third lens group is aligned with the transmitting component.

Optionally, the receiving end component includes a first receiving end component and a second receiving end component; the second lens group is aligned with the first receiving end component; the third lens group is aligned with the second The receiver components are aligned.

Optionally, the wavelengths of light received by the first receiving end component and the second receiving end component are different.

Optionally, the transmitting end component includes a first transmitting end component and a second transmitting end component; the second lens group is aligned with the first transmitting end component; the third lens group is aligned with the second The transmitter components are aligned.

Optionally, the wavelengths of light emitted by the first transmitting end component and the second transmitting end component are different.

Optionally, the light transmitting sub-module is detachably disposed in the optical module.

Optionally, the surface of the filter surface is a coating or a filter.

Optionally, the light transmitting sub-module further includes a housing for fixing the third lens group.

The present application also provides an optical module, including: a receiving end component, a transmitting end component, a transparent main module, a transparent sub-module, and a circuit board;

Wherein, the transparent sub-module is assembled with the transparent main module in a detachable manner, and when the transparent main module and the transparent sub-module are assembled together, the optical module works in two-way transmission and reception. Mode; when the light-transmitting sub-module is separated from the light-transmitting main module, the optical module works in a unidirectional transmission and reception mode.

This application also provides an optical module, including: a receiving end component, a transmitting end component, a transparent main module, and a circuit board;

The translucent main module includes a first lens group, a second lens group, a light path conversion structure, and a housing fixedly assembled with the aforementioned components;

The light path conversion structure includes at least a filter surface and a reflection surface; the filter surface and the reflection surface are disposed in the transmission light path of the first lens group and the second lens group, and satisfy the light passing through the first lens group. After being transmitted to the filter surface and transmitted, the light is reflected by the reflective surface to the second lens group, or the light from the second lens group is reflected by the reflective surface and enters the filter surface and transmitted to the first lens group.

Compared with the prior art, this application has the following advantages:

The present application provides an optical module. A sub-body including a third lens group is provided below the main body; and a second photodetector array is provided on a PCB; the transmission channel has a function of transmitting and receiving optical signals, and solves the problem. This solves the problem that each transmission channel of the existing optical module has only one function of transmitting or receiving optical signals.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a transmission channel for sending light emitted by a laser to an optical fiber according to a third embodiment of the present application.

FIG. 2 is a schematic diagram of a transmission channel for receiving light emitted from an optical fiber into a photodetector according to a third embodiment of the present application.

FIG. 3 is a structural diagram of an optical module provided by the first embodiment of the present application.

FIG. 4 is a structural diagram of a sub-body of an optical module provided by the first embodiment of the present application.

FIG. 5 is a schematic diagram of a main body provided by the first embodiment of the present application.

FIG. 6 is a schematic diagram of an embedded daughter body provided by the first embodiment of the present application.

FIG. 7 is a cross-sectional view of a group of transmission channels provided for transmitting and receiving optical signals according to the first embodiment of the present application.

FIG. 8 is a schematic diagram of an optical path for transmitting an optical signal of an optical module including a light transmitting sub-module according to a first embodiment of the present application.

FIG. 9 is a schematic diagram of an optical path for receiving an optical signal of an optical module including a light transmitting sub-module according to a first embodiment of the present application.

FIG. 10 is a cross-sectional view of another set of transmission channels for transmitting and receiving optical signals provided by the first embodiment of the present application.

FIG. 11 is an assembly schematic diagram of an optical module provided by the first embodiment of the present application.

FIG. 12 is a schematic diagram of a specific implementation manner of an optical module according to a first embodiment of the present application.

detailed description

Numerous specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar promotion without departing from the content of the present invention, so the present invention is not limited by the specific implementations disclosed below.

The first embodiment of the present application provides an optical module, which is described in detail below with reference to FIGS. 3 to 11.

Implementation mode one:

The optical module includes a receiving end component, a transmitting end component, a transparent main module, a transparent sub-module, and a circuit board;

The receiving end assembly includes a first photodetector array 1-1, the transmitting end assembly includes a first laser array, and the first photodetector array 1-1 and the first laser array 2-1 are disposed on a circuit board 5 on.

As shown in FIG. 6 and FIG. 7, the transparent main module 3-1 includes a first lens group 3-1-1 and a second lens group 3-1-2, and a first lens group 3-1-1 is fixedly assembled. 1. A second lens group, a light path conversion structure, and a housing 3-1-3 in which the aforementioned components are fixedly assembled. The transparent sub-module 3-2 is disposed below the transparent main module 3-1.

The coupling lenses of the first lens group 3-1-1 are respectively aligned with the optical fiber 4-1 connected to the optical module, and are used for coupling an optical signal to the optical fiber or deriving the optical signal in the optical fiber.

The second lens group is disposed on the transparent main module side facing the circuit board, and is aligned with the receiving end component and the transmitting end component, respectively: the third lens group 3-2-1 and the first The photodetector array 1-1 is aligned; the second lens group 3-1-2 is aligned with the first laser array 2-1.

The light path conversion structure includes a filter surface and a reflection surface; the filter surface and the reflection surface are disposed in the transmission light path of the first lens group and the second lens group, and satisfy the light transmission through the first lens group After being transmitted to the filter surface, it is reflected to the second lens group via the reflection surface, or light reflected by the second lens group is reflected to the filter surface and enters the filter surface and transmitted to the first lens group. In this embodiment, the light path conversion structure is used to convert light passing through the first lens group to the third lens group, or to convert light passing through the second lens group to the first lens group.

The light transmitting sub-module 3-2 includes a third lens group 3-2-1, which is disposed between the light transmitting main module 3-1 and the circuit board, and the third lens group 3-2-1 faces One side of the circuit board is aligned with the receiving end component; the position of the light transmitting sub-module is such that the light reflected by the filter surface is transmitted to the third lens group. The light transmitting sub-module further includes a housing for fixing the third lens group.

The light path conversion structure includes: a first filter surface 3-1-4 and a first reflection surface 3-1-5; the filter surface is disposed obliquely and is located above the third lens group 3-2-1; The reflection surface 3-1-5 is located above the second lens group 3-1-2.

The light path conversion structure is used to convert the light passing through the first lens group to a third lens group, and includes: the filter surface reflects an optical signal derived from the coupling lens of the first lens group to the third lens group. As shown in FIG. 7, the direction of the light-colored arrow indicates the route where the light emitted by the optical fiber 4-1 is coupled to the first photodetector array 1-1, and the light emitted by the optical fiber 4-1 reaches the first lens group 3-1-1 first. And then reaches the first filter surface 3-1-4, and the light reflected by the first filter surface 3-1-4 is coupled to the first through the mirror surface of the third lens group 3-2-1 of the daughter body. Photodetector array 1-1.

The light path conversion structure is used to convert the light passing through the second lens group to the first lens group, and includes: the reflecting surface reflects the optical signal of the second lens group and transmits the light signal through the filtering surface to the first lens group. The mirror surface of a lens group. As shown in FIG. 7, the direction of the dark arrow indicates the route of the light from the first laser array 2-1 to the optical fiber, as follows: The light from the first laser array 2-1 passes through the second lens group to reach the first reflecting surface 3 -1-5, the first reflective surface 3-1-5 reflects the light to the first filter surface 3-1-4, and transmits the light to the first lens group 3--1 through the first filter surface 3-1-4 The mirror surface of 1-1 couples the transmitted light to the optical fiber 4-1 through the mirror surface.

By setting a light transmitting sub-module including the third lens group 3-2-1 under the light transmitting main module, the transmission channel is realized as a light receiving channel and a light transmitting channel at the same time.

It should be noted that the transmission channel where the optical fiber 4-1 is located can be used as a light receiving channel and a light transmitting channel at the same time, it can also be a light receiving channel at a certain moment, and a light transmitting channel at another moment. In order to realize that the transmission channel where the optical fiber 4-1 is located can be used as both a receiving channel and a transmitting channel, the first filter surface 3-1-4 can be coated or coated with a filter. For example, if the second photodetector array uses a wavelength λ_1 and the first laser array 2-1 uses a wavelength λ_2, the first filter surface 3-1-4 can be plated with a corresponding film system so that the light at the wavelength λ_1 is reflected and the wavelength λ_2 The light is transmitted through.

Implementation mode two:

As shown in FIG. 10 and FIG. 6, the optical module includes: a receiving end component, a transmitting end component, a transparent main module, a transparent sub-module, and a circuit board;

The receiving end component includes a second photodetector array 1-2, the transmitting end component includes a second laser array 2-2, and the second photodetector array 1-2 and the second laser array 2-2 are disposed in a circuit On the board 5.

The light transmitting module 3-1 includes a first lens group 3-1-2 and a second lens group 3-1.8, and a first lens group 3-1-2 and a second lens group 3-1-2 are fixedly assembled. 8 的壳 3-1-3. The transparent sub-module 3-2 is disposed below the transparent main module 3-1; the transparent sub-module 3-2 includes a third lens group 3-2-2.

The coupling lenses of the first lens group 3-1-2 are respectively aligned with the optical fiber 4-2 connected to the optical module, and are used for coupling an optical signal to the optical fiber or deriving the optical signal in the optical fiber.

The second lens group 3-1-8 and the third lens group 3-2-2 are disposed on the light transmitting module side facing the circuit board, and are opposite to the receiving end component and the transmitting end component, respectively. Collimation: the third lens group 3-2-2 is aligned with the second laser array 2-2; the second lens group 3-1-2 is aligned with the second photodetector array 1-2.

The optical path conversion structure The optical path conversion structure includes a filter surface and a reflective surface; the filter surface and the reflective surface are disposed in the transmission light path of the first lens group and the second lens group, and satisfy the After the light of the lens group is transmitted to the filter surface and transmitted, it is reflected by the reflective surface to the second lens group, or the light of the second lens group is reflected by the reflective surface and enters the filter surface and transmitted to the first lens group. In this embodiment, the light path conversion structure is used to convert light passing through the first lens group to the second lens group, or to convert light passing through the third lens group to the first lens group.

The light transmitting sub-module 3-2 includes a third lens group 3-2-2, which is disposed between the light transmitting main module 3-1 and the circuit board, and the third lens group 3-2-2 faces One side of the circuit board is aligned with the transmitting end component; the position of the light transmitting sub-module is such that after the light from the third lens group is transmitted to the filter surface, it is reflected from the filter surface to the first lens group . The light transmitting sub-module further includes a housing for fixing the third lens group.

The light path conversion structure includes: a second filtering surface 3-1-6 and a second reflecting surface 3-1-7; the second filtering surface is disposed obliquely and is located above the third lens group 3-2-2 The second reflecting surface 3-1-7 is located above the second lens group 3-1-8.

The light path conversion structure is used to convert light passing through the first lens group to a second lens group, and includes: a light signal derived from a coupling lens of the first lens group is transmitted through the filter surface to reach the reflection surface , Reaching the second lens group through the reflection surface. As shown in FIG. 10, the direction of the light-colored arrow indicates the route that the light emitted by the optical fiber 4-2 is coupled to the second photodetector array 1-2, as follows: the light emitted by the optical fiber 4-2 first reaches the first lens group 3-1-2 mirror surface, and then reaches the second filter surface 3-1-6, and the light transmitted through the second filter surface 3-1-6 is reflected by the second reflection surface 3-1.7 and reaches the first Two lens groups. The second lens group couples light to the second photodetector array 1-2.

The light path conversion structure is used to convert the light passing through the third lens group to the first lens group, and includes: the light signal emitted by the transmitting end component is reflected by the filter surface and reaches the mirror surface of the first lens group. As shown in FIG. 10, the direction of the dark arrow indicates the route that the light emitted by the first laser array 2-1 reaches the optical fiber of the second fiber group 4-2, as follows: The light emitted by the second laser array 2-2 passes through the third The lens group 3-2-2 reaches the second filter surface 3-1-6, and reflects the light through the second filter surface 3-1-6 to the mirror surface of the first lens group 3-1-2, and the light is transmitted through the mirror surface Coupling to fiber 4-2.

By setting a light transmitting sub-module including a third lens group 3-2-2 below the light transmitting main module, the transmission channel is realized as a light receiving channel and a light transmitting channel at the same time.

It should be noted that the transmission channel where the optical fiber 4-2 is located can be used as a light receiving channel and a light transmitting channel at the same time, it can also be a light receiving channel at a certain moment, and a light transmitting channel at another moment. In order to realize that the optical fiber 4-2 can be used as both a receiving channel and a transmitting channel, the second filter surface 3-1-6 can be coated or attenuated. For example, if the second photodetector array 1-2 uses a wavelength λ_1 and the second laser array 2-2 uses a wavelength λ_2, the second filter surface 3-1-6 may be plated with a corresponding film system so that light of a wavelength λ_1 passes through , Λ_2 light is reflected.

It should be noted that the above-mentioned light-transmitting sub-module is detachably disposed in the light module. In specific implementation, the light-transmitting sub-module and the light-transmitting main module may also be provided as a whole.

In specific implementation, the first laser array 2-1 in Embodiment 1 can also be changed to a first transmitting end component, and the first photodetector array 1-1 can be changed to a second transmitting end component; the second lens The group is aligned with the first transmitting end component; the third lens group is aligned with the second transmitting end component. At this time, the wavelengths of light emitted by the first transmitting end component and the second transmitting end component are different.

In specific implementation, the second photodetector array 1-2 in Embodiment 2 can also be changed to a first receiving end component, and the second laser array 2-2 can be changed to a second receiving end component; the second lens The group is aligned with the first receiving end component; the third lens group is aligned with the second receiving end component. The wavelengths of light received by the first receiving end component and the second receiving end component are different.

The above two implementation manners realize that the fiber channel can be used as two sending channels or two receiving channels of different wavelengths at the same time.

Figures 8 and 9 are schematic diagrams of the optical path of an optical module including a transmissive sub-module. The optical path in Figure 8 is that the light emitted by the laser array passes through the third lens group to reach the filter surface, and the light is reflected by the filter surface to the first lens group. The mirror surface couples light to the optical fiber; the optical path in Figure 9 is that the light emitted by the fiber first reaches the mirror surface of the first lens group, and then reaches the filter surface, and the light reflected by the filter surface passes through the mirror surface of the third lens group. Coupled to photodetector array.

The following describes the effect achieved by using the optical module according to the first embodiment of the present application through FIG. 12.

As shown in 12-1 and 12-5, when the translucent sub-module 12-1-1 is not embedded, it can only send and receive optical signals with a wavelength of 850 nm. After embedding the translucent sub-module 12-1-1, Not only the transmission and reception of optical signals with a wavelength of 850nm, but also the transmission and reception of optical signals with a wavelength of 910nm.

As shown in 12-2 and 12-6, when the translucent sub-module 12-2-1 is not embedded, it can only send and receive optical signals with a wavelength of 910 nm. After embedding the translucent sub-module 12-2-1, Not only the transmission and reception of optical signals with a wavelength of 910nm, but also the transmission and reception of optical signals with a wavelength of 850nm.

As shown in 12-3 and 12-7, when the translucent sub-module 12-3-1 is not embedded, it can only send optical signals with a wavelength of 850 nm and 850 nm, and the translucent sub-module 12-3-1 is embedded. Later, the transmission and reception of optical signals with a wavelength of 910nm was increased.

As shown in 12-4 and 12-8, when the translucent sub-module 12-4-1 is not embedded, it can only send and receive optical signals with a wavelength of 910 nm. After embedding the translucent sub-module 12-4-1, Not only the transmission and reception of optical signals with a wavelength of 910nm, but also the transmission and reception of optical signals with a wavelength of 850nm.

As can be seen from FIG. 12, in the optical module of the first embodiment of the present application, the size of the main part of the optical module (Lens) is the same as the size of the conventional optical module (Lens). In the case of not occupying the PCBA area and the same number of transmission fibers, the transmission channel is doubled and the transmission rate is doubled. For example, the original transmission of 200G can now transmit 400G.

A second embodiment of the present application provides an optical module including: a receiving end component, a transmitting end component, a transparent main module, a transparent sub-module, and a circuit board;

A third embodiment of the present application provides an optical module, including: a receiving end component, a transmitting end component, a transparent main module, and a circuit board;

For a specific implementation manner, refer to FIG. 3, and the light-transmitting sub-module 3-2 may be removed.

For a schematic diagram of the optical path transmission in the third embodiment of the present application, refer to FIG. 1 and FIG. 2. FIG. 1 provides a schematic diagram of transmitting light emitted by a laser to an optical fiber, which is implemented by using an optical module according to a third embodiment of the present application. FIG. 2 provides a schematic diagram for receiving light emitted from an optical fiber into a photodetector, which is implemented by using an optical module according to a third embodiment of the present application.

Although the present application is disclosed as above with the preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. The scope of protection shall be subject to the scope defined by the claims of this application.

In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

Memory may include non-persistent memory, random access memory (RAM), and / or non-volatile memory in computer-readable media, such as read-only memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer-readable media includes both permanent and non-persistent, removable and non-removable media. Information can be stored by any method or technology. Information may be computer-readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), and read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, read-only disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, Magnetic tape cartridges, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media may be used to store information that can be accessed by computing devices. As defined herein, computer-readable media does not include non-transitory computer-readable media, such as modulated data signals and carrier waves.

Those skilled in the art should understand that the embodiments of the present application may be provided as a method, a system, or a computer program product. Therefore, this application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, this application may take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

Claims

An optical module includes: a receiving end component, a transmitting end component, a transparent main module, a transparent sub-module, and a circuit board;

The receiving end component and the transmitting end component are disposed on the circuit board;

The translucent main module includes a first lens group, a second lens group, a light path conversion structure, and a housing fixedly assembled with the aforementioned components;

The coupling lenses of the first lens group are respectively aligned with the optical fibers connected to the optical module, and are used for coupling an optical signal to the optical fiber or deriving the optical signal from the optical fiber;

The second lens group is disposed on the transparent main module side facing the circuit board, and is aligned with the receiving end component or the transmitting end component;

The light path conversion structure includes at least a filter surface and a reflection surface; the filter surface and the reflection surface are disposed in the transmission light path of the first lens group and the second lens group, and satisfy the light passing through the first lens group. After transmitting to the filter surface, the light is reflected by the reflective surface to the second lens group, or the light from the second lens group is reflected by the reflective surface, enters the filter surface, and is transmitted to the first lens group;

The light transmitting sub-module includes a third lens group disposed between the light transmitting main module and the circuit board, and the third lens group faces one side of the circuit board, and is connected to the transmitting end component or receiving end. The components are aligned; the position of the light transmitting sub-module is such that the light reflected by the filter surface is transmitted to the third lens group, or the light transmitted by the third lens group is transmitted to the filter surface and then reflected by the filter surface. To the first lens group.
The optical module according to claim 1, wherein:

The third lens group is aligned with the receiving end component; the second lens group is aligned with the transmitting end component.
The optical module according to claim 1, wherein the second lens group is aligned with the receiving end component; and the third lens group is aligned with the transmitting end component.
The optical module according to claim 1, wherein:

The receiving end component includes a first receiving end component and a second receiving end component; the second lens group is aligned with the first receiving end component; and the third lens group is opposite the second receiving end component quasi.
The optical module according to claim 4, wherein the wavelengths of light received by the first receiving end component and the second receiving end component are different.
The optical module according to claim 1, wherein:

The transmitting end component includes a first transmitting end component and a second transmitting end component; the second lens group is aligned with the first transmitting end component; and the third lens group is opposite the second transmitting end component quasi.
The optical module according to claim 6, wherein the wavelengths of light emitted by the first transmitting end component and the second transmitting end component are different.
The optical module according to claim 1, wherein the light transmitting sub-module is detachably disposed in the optical module.
The optical module according to claim 1, wherein a surface of the filtering surface is a coating or a filter.
The optical module according to claim 1, wherein the light transmitting sub-module further comprises a housing for fixing the third lens group.
An optical module includes: a receiving end component, a transmitting end component, a transparent main module, a transparent sub-module, and a circuit board;

The receiving end component and the transmitting end component are disposed on the circuit board;

Wherein, the transparent sub-module is assembled with the transparent main module in a detachable manner, and when the transparent main module and the transparent sub-module are assembled together, the optical module works in two-way transmission and reception. Mode; when the light-transmitting sub-module is separated from the light-transmitting main module, the optical module works in a unidirectional transmission and reception mode.
An optical module, comprising: a receiving end component, a transmitting end component, a transparent main module, and a circuit board;

The receiving end component and the transmitting end component are disposed on the circuit board;

The translucent main module includes a first lens group, a second lens group, a light path conversion structure, and a housing fixedly assembled with the aforementioned components;

The coupling lenses of the first lens group are respectively aligned with the optical fibers connected to the optical module, and are used for coupling an optical signal to the optical fiber or deriving the optical signal from the optical fiber;

The second lens group is disposed on the transparent main module side facing the circuit board, and is aligned with the receiving end component or the transmitting end component;

The light path conversion structure includes at least a filter surface and a reflection surface; the filter surface and the reflection surface are disposed in the transmission light path of the first lens group and the second lens group, and satisfy the light passing through the first lens group. After being transmitted to the filter surface and transmitted, the light is reflected by the reflective surface to the second lens group, or the light from the second lens group is reflected by the reflective surface and enters the filter surface and transmitted to the first lens group.