Laser emitting device and optical module

Abstract

The invention provides a laser emitting device and an optical module, and relates to but is not limited to the technical field of communication, and the laser emitting device comprises a tube seat which comprises a first plane; the laser assembly comprises a plurality of lasers, and emergent light of each laser is located on a second plane parallel to the first plane; the collimating lens assembly comprises a plurality of collimating lenses in one-to-one correspondence with the lasers in the laser assembly, and each collimating lens is used for converting emergent light of the corresponding laser into collimated light; the wave combining and reflecting module is used for combining the collimated light corresponding to the lasers to form a first wave combining light beam and reflecting the first wave combining light beam to form a second wave combining light beam emitted in the preset direction. The emergent light of the corresponding laser is converted into the collimated light through the collimating lens assembly, then the corresponding collimated light is subjected to wave combination through the wave combination reflection module to form the first wave combination light beam, the first wave combination light beam is reflected to form the second wave combination light beam emitted in the preset direction, and therefore the overall size and cost of the device can be reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to a laser emitting device and an optical module. Background Art

[0002] With the development of global optical communication networks and the continuous increase in communication speeds, optical cables are increasingly being replaced by optical fibers, leading to a growing demand for high-speed, miniaturized optical modules. This increased demand has made multifunctional, flexible, and low-cost optical communication components an inevitable development trend. However, the packaging technology used in related laser emitting devices suffers from large overall size and high cost. Therefore, solving these issues is a major challenge facing the industry. Summary of the Invention

[0003] The embodiments of the present application provide a laser emitting device and an optical module, aiming to reduce the overall size and cost of the laser emitting device.

[0004] In a first aspect, an embodiment of the present application provides a laser emitting device, comprising:

[0005] A tube base including a first plane;

[0006] A laser assembly comprising a plurality of lasers, wherein the output light of each laser is located on a second plane parallel to the first plane;

[0007] a collimating lens assembly, comprising a plurality of collimating lenses corresponding one to one to the lasers in the laser assembly, each of the collimating lenses being configured to convert the output light of the corresponding laser into collimated light;

[0008] The wave combining and reflecting module is used to combine the collimated light corresponding to each of the lasers to form a first combined light beam, and reflect the first combined light beam to form a second combined light beam emitted in a preset direction.

[0009] In a second aspect, an embodiment of the present application further provides an optical module, which includes the laser emitting device of the first aspect.

[0010] According to the laser emitting device and optical module provided in the embodiment of the present application, the laser emitting device includes a tube seat, a laser assembly, a collimating lens assembly and a wave combining reflection module, the tube seat includes a first plane; the laser assembly includes a plurality of lasers, and the output light of each laser is located on a second plane parallel to the first plane; the collimating lens assembly includes a plurality of collimating lenses corresponding to the lasers in the laser assembly, and each collimating lens is used to convert the output light of the corresponding laser into collimated light; the wave combining reflection module is used to combine the collimated light corresponding to each laser to form a first combined light beam, and reflect the first combined light beam to be emitted in a preset direction. The embodiment of the present application first converts the output light of the corresponding laser into collimated light through the collimating lens assembly, and then combines the collimated light corresponding to each laser through the wave combining reflection module to form a first combined light beam, and reflects the first combined light beam to form a second combined light beam emitted in a preset direction, thereby reducing the overall size and cost of the laser emitting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a laser emitting device provided in one embodiment of the present application;

[0012] Figure 2 is a schematic structural diagram of a laser emitting device provided in another embodiment of the present application;

[0013] Figure 3 This is a structural diagram of a wave combining and reflection module provided by an embodiment of the present application;

[0014] Figure 4 is a structural diagram of a wave combining and reflection module provided in another embodiment of the present application;

[0015] Figure 5 is a schematic structural diagram of a laser emitting device provided in another embodiment of the present application;

[0016] Figure 6 This is a schematic diagram of the optical path of a laser emitting device provided in one embodiment of the present application;

[0017] Figure 7 This is a schematic diagram of the optical path of a laser emitting device provided in another embodiment of the present application;

[0018] Figure 8 This is a schematic diagram of the optical path of a laser emitting device provided in another embodiment of the present application;

[0019] Figure 9 This is a schematic diagram of the optical path of a laser emitting device provided in another embodiment of the present application;

[0020] Figure 10 This is a schematic diagram of the three-dimensional structure of a laser emitting device provided in one embodiment of the present application;

[0021] Figure 11 is a schematic diagram of the three-dimensional structure of a laser emitting device provided in another embodiment of the present application;

[0022] Figure 12 It is a structural diagram of a wave combining and reflection module provided in another embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0024] It should be noted that although the device schematics illustrate functional module divisions and the flowcharts illustrate logical sequences, in certain circumstances, the steps shown or described may be performed in a sequence that differs from the module divisions in the device or the sequence in the flowcharts. The terms "first," "second," and so on, in the specification, claims, and drawings, are used to distinguish similar items and are not necessarily used to describe a specific sequence or precedence.

[0025] In the embodiments of the present application, words such as "further," "exemplarily," or "optionally" are used to indicate examples, illustrations, or descriptions and should not be interpreted as being more preferred or advantageous over other embodiments or designs. The use of words such as "further," "exemplarily," or "optionally" is intended to present related concepts in a concrete manner.

[0026] With the development of global optical communication networks, communication speeds continue to increase, and optical cables are increasingly being replaced by optical fibers. This has led to a growing demand for high-speed, miniaturized optical modules. This increased demand has made multifunctional, flexible, and low-cost optical communication components an inevitable development trend. Existing laser transmitters employ two main packaging technologies: BOX packaging and transistor-outline (TO) packaging. BOX packaging enables multi-channel signal transmission, but its multi-channel lasers all utilize a planar array format, resulting in a large overall size, complex optical path structure, and high manufacturing difficulty and cost. TO packaging offers advantages such as small size and low cost, but TO packaging components often only encapsulate a single communication wavelength, resulting in limited data transmission capacity. When multiple signal rates or wavelengths need to coexist, two or more independent TO-packaged components are often required. These components are then combined through external wavelength division multiplexing (WDM) to achieve single-port output. However, these two or more TO-packaged components must be assembled into a multi-wavelength or multi-rate coexisting optical component through processes such as coupling and welding, resulting in a large overall size and high cost. Therefore, how to solve the problem of large overall size and high cost of laser emitting devices is the main problem currently facing the industry.

[0027] Based on the above situation, the embodiments of the present application propose a laser emitting device and an optical module, which use one TO packaging component to realize the functions of multiple TOs, aiming to reduce the overall size and cost of the laser emitting device.

[0028] The following further describes various embodiments of the laser emitting device of the present application in conjunction with the accompanying drawings.

[0029] like Figure 1 and Figure 2 As shown, Figure 1 This is a schematic structural diagram of a laser emitting device provided in one embodiment of the present application; Figure 2 It is a structural schematic diagram of a laser emitting device provided in another embodiment of the present application.

[0030] In one embodiment, the laser emitting device of the embodiment of the present application includes but is not limited to a tube holder 100, a laser assembly, a collimating lens assembly and a combining reflection module, wherein the tube holder 100 includes a first plane; the laser assembly includes multiple lasers, and the output light of each laser is located on a second plane parallel to the first plane; the collimating lens assembly includes multiple collimating lenses 300 corresponding one-to-one to the lasers in the laser assembly, and each collimating lens 300 is used to convert the output light of the corresponding laser into collimated light; the combining reflection module is used to combine the collimated light corresponding to each laser to form a first combined light beam, and reflect the first combined light beam to form a second combined light beam emitted in a preset direction.

[0031] It should be noted that the laser's output light is converted into collimated light by the collimating lens assembly, so that the laser's output light can be propagated in a more stable and concentrated manner, reducing energy loss and beam diffusion.

[0032] It should be noted that the collimated light from each laser is combined into a single beam through the combining and reflecting module to form a first combined beam, which is then reflected to form a second combined beam emitted in a preset direction, thereby increasing the overall laser power or energy.

[0033] It is worth noting that the embodiment of the present application first converts the output light of the laser into collimated light through a collimating lens assembly, and then combines the collimated light corresponding to each laser through a combining reflection module to form a first combined light beam, and reflects the first combined light beam to form a second combined light beam emitted in a preset direction, thereby reducing the overall size and cost of the laser emitting device.

[0034] like Figure 3 and Figure 4 As shown, Figure 3 This is a structural diagram of a wave combining and reflection module provided by an embodiment of the present application; Figure 4 It is a structural diagram of a wave combining and reflection module provided in another embodiment of the present application.

[0035] In one embodiment, the combining and reflecting module includes a combining device 410 and a reflecting device 420, wherein the combining device 410 is used to combine the collimated light corresponding to each laser to form a first combined light beam; the reflecting device 420 is used to reflect the first combined light beam to form a second combined light beam emitted in a preset direction.

[0036] It should be noted that the collimated light corresponding to each laser is combined by the combiner 410 to form a first combined light beam, thereby increasing the overall laser power or energy.

[0037] It should be noted that the reflective device 420 can change the beam direction of the first combined light beam, thereby causing the first combined light beam to be reflected, thereby obtaining a second combined light beam emitted in a preset direction.

[0038] like Figure 1 As shown, in one embodiment, the laser assembly includes a first laser 210 and at least one second laser 220, wherein the first collimated light corresponding to the first laser 210 and the second collimated light corresponding to the second laser 220 are not parallel; when the number of the second lasers 220 is multiple, the second collimated lights corresponding to the respective second lasers 200 are parallel to each other.

[0039] like Figure 3 As shown, in one embodiment, the combiner device 410 includes a first optical surface 411 corresponding to each second laser 220, and the first optical surface 411 is used to transmit the first collimated light corresponding to the first laser 210 and reflect the second collimated light corresponding to the second laser 220; the reflection position of the second collimated light on the first optical surface is the transmission position of the first collimated light on the first optical surface, so that the second collimated light is combined with the first collimated light to form a first combined light beam after being reflected on the first optical surface.

[0040] It can be understood that when the number of second lasers 220 is one and the collimated lights corresponding to the first laser 210 and the second laser 220 are not parallel, first, the collimating lens 300 corresponding to the first laser 210 converts the output light of the first laser 210 into a first collimated light, and the collimating lens 300 corresponding to the second laser 220 converts the output light of the second laser 220 into a second collimated light; then, the first optical surface 411 transmits the first collimated light corresponding to the first laser 210 and reflects the second collimated light corresponding to the second laser 220, and the reflection position of the second collimated light corresponding to the second laser 220 on the first optical surface is the transmission position of the first collimated light corresponding to the first laser 210 on the first optical surface, so that the second collimated light is combined with the first collimated light after being reflected on the first optical surface to form a first combined light beam.

[0041] It can be understood that the reflection angle of the second collimated light corresponding to the second laser 220 reflected by the first optical surface 411 can be 45 degrees. For example, when the number of second lasers 220 is one and the collimated lights corresponding to the first laser 210 and the second laser 220 are not parallel, first, the collimating lens 300 corresponding to the first laser 210 converts the output light of the first laser 210 into the first collimated light, and the collimating lens 300 corresponding to the second laser 220 converts the output light of the second laser 220 into the second collimated light; then, the first optical surface 411 transmits the first collimated light corresponding to the first laser 210 and reflects the second collimated light corresponding to the second laser 220 at 45 degrees. The reflection position of the second collimated light corresponding to the second laser 220 on the first optical surface is the transmission position of the first collimated light corresponding to the first laser 210 on the first optical surface, so that the second collimated light is combined with the first collimated light after reflection on the first optical surface to form a first combined light beam.

[0042] It is understood that there can be multiple second lasers 220. When the number of second lasers 220 changes, the number of collimating lenses 300 also changes, as there is a one-to-one correspondence between lasers and collimating lenses 300. For example, when there are three second lasers 220, the number of collimating lenses 300 corresponding to each second laser 220 should be three, where each collimating lens 300 converts the output light of the corresponding second laser 220 into collimated light.

[0043] It is understandable that when there are multiple second lasers 220, it is only necessary to add an optical surface to the combiner device 410 to combine the collimated light corresponding to each laser to form the first combined light beam. For example, when a second laser 220 is added to the left side of the second laser 220, it is only necessary to add a first optical surface 411 corresponding to the newly added second laser 220 above the first optical surface 411. The first optical surface 411 corresponding to the newly added second laser 220 is used to transmit the first collimated light corresponding to the first laser 210 and the first collimated light corresponding to the first laser 210, and to reflect the second collimated light corresponding to the newly added second laser 220. The first optical surface is used to transmit the first collimated light corresponding to the first laser 210 and reflect the second collimated light corresponding to the second laser 220 to transmit the second collimated light corresponding to the newly added second laser 220 at the reflection position of the first optical surface, so that the second collimated light and the first collimated light are combined on the newly added first optical surface 411 to form the first combined light beam.

[0044] like Figure 2As shown, in one embodiment, the laser assembly includes a first laser 210 and at least one second laser 220 , and the first collimated light corresponding to the first laser 210 and the second collimated light corresponding to each second laser 220 are parallel to each other.

[0045] like Figure 4 As shown, in one embodiment, the combiner device 410 includes a second optical surface 412 corresponding to the first laser 210 and a third optical surface 413 corresponding to each second laser 220. The second optical surface 412 is used to transmit the first collimated light and reflect the second collimated light; the third optical surface is used to reflect the corresponding second collimated light to the transmission position of the first collimated light on the second optical surface, so that the second collimated light is combined with the first collimated light to form a first combined light beam after being reflected on the second optical surface.

[0046] It can be understood that when the number of second lasers 220 is one and the collimated lights corresponding to the first laser 210 and the second laser 220 are parallel, first, the collimating lens 300 corresponding to the first laser 210 converts the output light of the first laser 210 into a first collimated light, and the collimating lens 300 corresponding to the second laser 220 converts the output light of the second laser 220 into a second collimated light; then, the second optical surface 412 transmits the first collimated light corresponding to the first laser 210 and reflects the second collimated light corresponding to the second laser 220, and the third optical surface 413 reflects the second collimated light corresponding to the second laser 220 to the transmission position of the first collimated light corresponding to the first laser 210 on the second optical surface, so that the second collimated light is combined with the first collimated light after being reflected from the second optical surface 412 to form a first combined light beam.

[0047] It can be understood that the reflection angle of the second collimated light corresponding to the second laser 220 reflected by the second optical surface 412 can be 45 degrees, and the reflection angle of the second collimated light corresponding to the second laser 220 reflected by the third optical surface 413 can be 45 degrees. For example, when the number of the second laser 220 is one and the collimated lights corresponding to the first laser 210 and the second laser 220 are parallel, first, the collimating lens 300 corresponding to the first laser 210 converts the output light of the first laser 210 into the first collimated light, and the second laser 220 The corresponding collimating lens 300 converts the output light of the second laser 220 into a second collimated light; then, the second optical surface 412 transmits the first collimated light corresponding to the first laser 210 and reflects the second collimated light corresponding to the second laser 220 at 45 degrees, and the third optical surface 413 reflects the second collimated light corresponding to the second laser 220 at 45 degrees to the transmission position of the first collimated light corresponding to the first laser 210 on the second optical surface, so that the second collimated light is combined with the first collimated light after being reflected from the second optical surface 412 to form a first combined light beam.

[0048] It is understood that there can be multiple second lasers 220. When the number of second lasers 220 changes, the number of collimating lenses 300 also changes, as there is a one-to-one correspondence between lasers and collimating lenses 300. For example, when there are three second lasers 220, the number of collimating lenses 300 corresponding to each second laser 220 should be three, where each collimating lens 300 converts the output light of the corresponding second laser 220 into collimated light.

[0049] It is understandable that when there are multiple second lasers 220 , it is only necessary to add an optical surface in the combiner device 410 to combine the collimated light corresponding to each laser to form the first combined light beam. For example, when a second laser 220 is added to the left side of the second laser 220, it is only necessary to add a third optical surface 413 corresponding to the newly added second laser 220 to the left side of the third optical surface 413. The second optical surface 412 is used to transmit the first collimated light corresponding to the first laser 210 and reflect the second collimated light corresponding to the second laser 220 and the second collimated light corresponding to the newly added second laser 220; the third optical surface 413 corresponding to the newly added second laser 220 is used to reflect the second collimated light corresponding to the newly added second laser 220 to the third optical surface 413; the third optical surface reflects the second collimated light corresponding to the second laser 220 and the second collimated light corresponding to the newly added second laser 220 to the first collimated light corresponding to the first laser 210 at the transmission position of the second optical surface 412, so that the second collimated light and the newly added second collimated light are combined with the first collimated light to form a first combined light beam after being reflected from the second optical surface 412.

[0050] It is worth noting that when the number of second lasers 220 increases, it is only necessary to add optical surfaces in the combiner device 410 to combine the collimated light corresponding to each laser to form a first combined light beam, that is, the size of the combining reflection module will change, but the height of the combining reflection module will not change, thereby reducing the overall size of the laser emitting device.

[0051] It should be noted that the combiner device 410 and the reflector device 420 of the present application are connected as one body, thereby reducing the process bonding process, shortening the optical path, and reducing the loss caused by tolerance. In addition, the combiner device 410 and the reflector device 420 are connected as one body, which can also reduce the size, which is conducive to the miniaturization of the laser emitting device and realizes more compact stacking and efficient optical path transmission.

[0052] It should be noted that the wave combining device 410 and the reflective device 420 of the present application are separately provided, and the wave combining device 410 is provided between the collimating lens assembly and the reflective device 420 .

[0053] It can be understood that since the combiner device 410 and the reflector device 420 are separately arranged, interference between different components can be reduced; in addition, since the combiner device 410 and the reflector device 420 are separately arranged, when a component fails, only the problematic part needs to be replaced or repaired, thereby improving maintainability.

[0054] like Figure 5 As shown, Figure 5 It is a structural schematic diagram of a laser emitting device provided in another embodiment of the present application.

[0055] In one embodiment, the laser emitting device further includes a tube cap 500 , which is disposed on the tube base 100 . The tube cap 500 is provided with a light outlet 510 , and the preset direction passes through the light outlet 510 .

[0056] In one embodiment, the output light of each laser is located on a second plane parallel to the first plane, and the output light of the laser is converted into collimated light through a corresponding collimating lens; the combining reflection module is used to combine the collimated light corresponding to each laser to form a first combined light beam, and reflect the first combined light beam to form a second combined light beam emitted in a preset direction. In this embodiment, the preset direction is perpendicular to the plane where the light outlet 510 is located, that is, the second combined light beam is perpendicular to the plane where the light outlet 510 is located.

[0057] Exemplarily, when the first collimated light corresponding to the first laser 210 and the second collimated light corresponding to the second laser 220 are not parallel, first, the collimating lens 300 corresponding to the first laser 210 converts the output light of the first laser 210 into the first collimated light, and the collimating lens 300 corresponding to the second laser 220 converts the output light of the second laser 220 into the second collimated light; then, the first optical surface 411 transmits the first collimated light corresponding to the first laser 210 and reflects the second collimated light corresponding to the second laser 220, and the second collimated light corresponding to the second laser 220 is reflected at the transmission position of the first collimated light corresponding to the first laser 210, so that the second collimated light of the second laser 220 is combined with the first collimated light of the first laser 210 to form a first combined light beam; then, the reflecting device 420 reflects the first combined light beam to form a second combined light beam emitted in a preset direction, wherein the preset direction passes through the light outlet 510, and the preset direction may be a direction perpendicular to the plane where the light outlet 510 is located.

[0058] It is worth noting that the present application uses the combining device 410 to combine the first collimated light and the second collimated light in parallel on the first optical surface 411 to form a first combined light beam, and the reflecting device 420 reflects the first combined light beam to emit vertically toward the light outlet 510. Therefore, the horizontal parallel combined light output + reflected vertical output method reduces the height of the device compared to the height of the transistor outline CAN (TO CAN) with a vertically placed light output, thereby reducing the overall size and cost of the device.

[0059] For example, when the first collimated light corresponding to the first laser 210 and the second collimated light corresponding to the second laser 220 are parallel, first, the collimating lens 300 corresponding to the first laser 210 converts the output light of the first laser 210 into the first collimated light, and the collimating lens 300 corresponding to the second laser 220 converts the output light of the second laser 220 into the second collimated light; then, the second optical surface 412 transmits the first collimated light corresponding to the first laser 210 and reflects the second collimated light corresponding to the second laser 220, and the third optical surface 413 reflects the first collimated light corresponding to the first laser 210. The second collimated light corresponding to the second laser 220 is reflected from the first collimated light corresponding to the first laser 210 at the transmission position of the second optical surface, so that the second collimated light corresponding to the second laser 220 is reflected by the third optical surface 413 and then combined with the first collimated light corresponding to the first laser 210 to form a first combined light beam; then, the reflector 420 reflects the first combined light beam to form a second combined light beam emitted in a preset direction, wherein the preset direction passes through the light outlet 510, and the preset direction can be a direction perpendicular to the plane where the light outlet 510 is located.

[0060] It is worth noting that the present application uses the combining device 410 to combine the first collimated light and the second collimated light in parallel on the third optical surface 413 to form a first combined light beam, and the reflecting device 420 reflects the first combined light beam to emit vertically toward the light outlet 510. Therefore, the horizontal parallel combined light output + reflected vertical output method reduces the height of the device compared to the height of the transistor outline CAN (TO CAN) with a vertically placed light output, thereby reducing the overall size and cost of the device.

[0061] It should be noted that the first combined light beam is parallel to the first plane.

[0062] It can be understood that, first, the combiner device 410 combines the collimated light corresponding to each laser to form a first combined light beam parallel to the first plane; then, the reflector device 420 reflects the first combined light beam to form a second combined light beam emitted in a preset direction, wherein the preset direction passes through the light outlet 510.

[0063] In addition, it should be noted that the combiner device is provided with a wavelength division multiplexing (WDM) coating, and the collimated lights of multiple lasers are combined through the WDM coating to form a first combined light beam.

[0064] It is understandable that by implementing WDM coating on the optical surface, the collimated light corresponding to the laser can be reflected or the collimated light corresponding to the laser can be transmitted, so that the collimated light of multiple lasers forms a first combined light beam.

[0065] In addition, it should be noted that the combining device includes a polarization combiner, and the collimated lights of multiple lasers are combined through the polarization combiner to form a first combined light beam.

[0066] like Figure 12 As shown, Figure 12 is a structural diagram of a wave combining and reflection module provided in another embodiment of the present application;

[0067] In one embodiment, the polarization combiner includes a polarizer 414 and a polarization film 415 . The polarizer 414 and the polarization film 415 allow the collimated waves of multiple lasers to be combined by the polarization combiner to form a first combined light beam.

[0068] In addition, it should be noted that a mounting member is provided on the first plane of the tube holder 100 , and the laser assembly, collimating lens assembly and wave combining reflection module are all provided on the mounting member; wherein the mounting member is a semiconductor cooler (TEC) or a substrate.

[0069] In one embodiment, a semiconductor cooler (TEC) is disposed on the first plane of the tube holder 100 , and the laser assembly, the collimating lens assembly, and the wave combining and reflecting module are all disposed on the TEC.

[0070] It should be noted that the TEC of the tube holder 100 is used to control the temperature of the laser. Among them, the TEC can provide stable temperature control, making the output power of the laser more stable, thereby improving the performance and service life of the laser. In addition, the TEC has a fast response speed and can quickly adjust the temperature of the laser to adapt it to different working environments and conditions. In addition, the TEC is small in size, which is convenient for close integration with the laser, thereby reducing the overall size of the laser emitting device.

[0071] It is understandable that the present application can also achieve temperature control of the laser through TEC and thermistor, wherein the thermistor can provide temperature feedback, and the TEC can adjust the heating or cooling power according to the temperature feedback. By controlling the temperature of the laser through the thermistor and TEC, the temperature of the laser can be accurately maintained within its optimal operating range, thereby ensuring the stability of the laser performance; in addition, the thermistor and TEC can respond quickly to temperature changes, which can help the laser reach a stable working state more quickly, thereby reducing the warm-up time and improving work efficiency; in addition, through precise control of temperature, the service life of the laser can be extended and performance degradation or failure caused by thermal stress or thermal drift can be reduced.

[0072] In one embodiment, a substrate is disposed on the first plane of the tube holder 100 , and the laser assembly, the collimating lens assembly, and the wave combining and reflecting module are all disposed on the substrate.

[0073] For example, the substrate may be a printed circuit board (PCB) substrate. The laser assembly, collimating lens assembly, and wave combining and reflection module are all disposed on the PCB substrate. The laser assembly is electrically connected to other components via a printed circuit on the PCB substrate.

[0074] It is understandable that the combiner device 410 and the reflector device 420 in the above-mentioned combiner reflector module can be connected as a whole or can be separate components. The reflector device 420 is placed on the rear side of the combiner device 410, and the embodiment of the present application does not specifically limit it.

[0075] It is understandable that the above-mentioned combining and reflecting module can be placed at the center of the tube holder 100 or at a position deviated from the center of the tube holder 100, as long as it is ensured that the second combined light beam is emitted from the light outlet 510 of the tube cap. The embodiment of the present application does not specifically limit the specific position of the combining and reflecting module.

[0076] It can be understood that the cross-section of the above-mentioned combiner device 410 and reflector device 420 can be a rectangle, a triangle, a parallelogram, or a surface that realizes reflection and transmission of the light path. The embodiment of the present application does not impose any specific restrictions on the shape of the cross-section of the combiner device 410 and the reflector device 420.

[0077] It can be understood that the wavelengths of the outgoing light corresponding to the first laser 210 and the outgoing light corresponding to the second laser 220 can be 1490±20nm, 1575-1580nm, or 1342±2nm, and the embodiments of the present application do not specifically limit them.

[0078] It can be understood that the embodiments of the present application can be applied to the application field of transmitting device packaging technology where two or more wavelengths or rates coexist, for example, PON access network scenarios and high-speed data center modules where GPON, XGPON and 50G PON or higher transmission rates coexist.

[0079] like Figure 10 and Figure 11 As shown, Figure 10 This is a schematic diagram of the three-dimensional structure of a laser emitting device provided in one embodiment of the present application; Figure 11 It is a schematic diagram of the three-dimensional structure of a laser emitting device provided in another embodiment of the present application.

[0080] It should be noted that if Figure 10 As shown, the first collimated light corresponding to the first laser 210 and the second collimated light corresponding to the second laser 220 are not parallel; Figure 11 As shown, the first collimated light corresponding to the first laser 210 is parallel to the second collimated light corresponding to the second laser 220 .

[0081] like Figure 6 As shown, Figure 6 This is a schematic diagram of the optical path of a laser emitting device provided in one embodiment of the present application.

[0082] Exemplarily, the first collimated light corresponding to the first laser 210 and the second collimated light corresponding to the second laser 220 are not parallel. First, the collimating lens 300 corresponding to the first laser 210 converts the output light of the first laser 210 into the first collimated light, and the collimating lens 300 corresponding to the second laser 220 converts the output light of the second laser 220 into the second collimated light. Then, the first optical surface 411 transmits the first collimated light corresponding to the first laser 210 and reflects the second collimated light corresponding to the second laser 220. The second collimated light corresponding to the second laser 220 is reflected at the transmission position of the first collimated light corresponding to the first laser 210, so that the second collimated light of the second laser 220 is combined with the first collimated light of the first laser 210 to form a first combined light beam. Then, the reflecting device 420 reflects the first combined light beam to form a second combined light beam emitted in a preset direction, wherein the preset direction passes through the light outlet 510, and the preset direction may be a direction perpendicular to the plane where the light outlet 510 is located.

[0083] like Figure 7 As shown, Figure 7 This is a schematic diagram of the optical path of a laser emitting device provided in another embodiment of the present application.

[0084] Exemplarily, the first collimated light corresponding to the first laser 210 and the second collimated light corresponding to the second laser 220 are not parallel, a second laser 220 is added to the left side of the second laser 220, the second collimated light corresponding to the second laser 220 is parallel to the second collimated light corresponding to the added second laser 220, a first optical surface 411 corresponding to the newly added second laser 220 is added above the first optical surface 411, first, the collimating lens 300 corresponding to the first laser 210 converts the output light of the first laser 210 into the first collimated light, the collimating lens 300 corresponding to the second laser 220 converts the output light of the second laser 220 into the second collimated light, and the collimating lens 300 corresponding to the newly added second laser 220 converts the output light of the newly added second laser 220 into the second collimated light; then, The first optical surface 411 corresponding to 220 is used to transmit the first collimated light corresponding to the first laser 210 and the second collimated light corresponding to the second laser 220, and to reflect the second collimated light corresponding to the newly added second laser 220. The first optical surface is used to transmit the first collimated light corresponding to the first laser 210 and reflect the second collimated light corresponding to the second laser 220 to the second collimated light corresponding to the newly added second laser 220. The second collimated light corresponding to the newly added second laser 220 is transmitted at the reflection position of the newly added first optical surface 411, so as to be combined with the second collimated light corresponding to the newly added second laser 220 to form a first combined light beam to the reflecting device 420; then, the reflecting device 420 reflects the first combined light beam to form a second combined light beam, and the second combined light beam is emitted in a preset direction, wherein the preset direction passes through the light outlet 510, and the preset direction can be a direction perpendicular to the plane where the light outlet 510 is located.

[0085] like Figure 8 As shown, Figure 8 This is a schematic diagram of the optical path of a laser emitting device provided in another embodiment of the present application.

[0086] For example, the first collimated light corresponding to the first laser 210 and the second collimated light corresponding to the second laser 220 are parallel. First, the collimating lens 300 corresponding to the first laser 210 converts the output light of the first laser 210 into the first collimated light, and the collimating lens 300 corresponding to the second laser 220 converts the output light of the second laser 220 into the second collimated light; then, the second optical surface 412 transmits the first collimated light corresponding to the first laser 210 and reflects the second collimated light corresponding to the second laser 220, and the third optical surface 413 reflects the second collimated light corresponding to the second laser 220. The second collimated light is transmitted to the first collimated light corresponding to the first laser 210 and is reflected at the transmission position of the second optical surface, so that the second collimated light corresponding to the second laser 220 is reflected by the third optical surface 413 and then combined with the first collimated light corresponding to the first laser 210 to form a first combined light beam to the reflecting device 420; then, the reflecting device 420 reflects the first combined light beam to form a second combined light beam, and the second combined light beam is emitted in a preset direction, wherein the preset direction passes through the light outlet 510, and the preset direction can be a direction perpendicular to the plane where the light outlet 510 is located.

[0087] like Figure 9 As shown, Figure 9 This is a schematic diagram of the optical path of a laser emitting device provided in another embodiment of the present application.

[0088] Exemplarily, the first collimated light corresponding to the first laser 210 is parallel to the second collimated light corresponding to the second laser 220, and a second laser 220 is added to the left side of the second laser 220. First, the collimating lens 300 corresponding to the first laser 210 converts the output light of the first laser 210 into the first collimated light, and the collimating lens 300 corresponding to the second laser 220 converts the output light of the second laser 220 into the second collimated light. The collimating lens 300 corresponding to the newly added second laser 220 converts the output light of the newly added second laser 220 into the second collimated light; then, the second optical surface 412 is used to transmit the first collimated light corresponding to the first laser 210 and reflect the second collimated light corresponding to the second laser 220 and the newly added second laser 220. The second collimated light corresponding to the newly added second laser 220 is reflected by the third optical surface 413; the third optical surface 413 reflects the second collimated light corresponding to the second laser 220 and the second collimated light corresponding to the newly added second laser 220 to the first collimated light corresponding to the first laser 210 at the transmission position of the second optical surface 412, so as to be combined with the first collimated light corresponding to the first laser 210 to form a first combined light beam to the reflecting device 420; then, the reflecting device 420 reflects the first combined light beam to form a second combined light beam, and the second combined light beam is emitted in a preset direction, wherein the plane where the light outlet 510 is located is perpendicular to the second combined light beam, and the preset direction passes through the light outlet 510.

[0089] An embodiment of the present application further provides an optical module, which includes the laser emitting device of any one of the above embodiments.

[0090] The optical module of the embodiment of the present application can be an integrated optical transceiver module, including an optical transmitter and an optical receiver. The optical transmitter is used to convert electrical signals into optical signals, transmit them to optical fibers via an optical interface, and then transmit them to an external network via the optical fiber. The optical receiver is used to receive optical signals transmitted from the external network via the optical fiber. The optical signals are transmitted into the optical module via the optical interface and converted into electrical signals by the optical receiver. The optical transmitter can be implemented by the laser emitting device provided in any embodiment of the present application, and can emit a multi-wavelength combined light beam.

[0091] The optical module of the embodiment of the present application can be applied to an optical line terminal (OLT), an optical network unit (ONU) or an optical network terminal (ONT).

[0092] It is worth noting that since the optical module of the embodiment of the present application includes the laser emitting device of any of the above embodiments, the specific implementation and technical effects of the optical module of the embodiment of the present application can refer to the specific implementation and technical effects of the laser emitting device of any of the above embodiments.

[0093] The above description of some embodiments of the present application with reference to the accompanying drawings does not limit the scope of the present invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of the present invention shall be within the scope of the present application.

Claims

1. A laser emitting device, characterized in that: include: A tube base including a first plane; A laser assembly comprising a plurality of lasers, wherein the output light of each laser is located on a second plane parallel to the first plane; a collimating lens assembly, comprising a plurality of collimating lenses corresponding one to one to the lasers in the laser assembly, each of the collimating lenses being configured to convert the output light of the corresponding laser into collimated light; The wave combining and reflecting module is used to combine the collimated light corresponding to each of the lasers to form a first combined light beam, and reflect the first combined light beam to form a second combined light beam emitted in a preset direction.

2. The laser emitting device according to claim 1, characterized in that The combining and reflecting module includes a combining device and a reflecting device; the combining device is used to combine the collimated light corresponding to each of the lasers to form the first combined light beam; the reflecting device is used to reflect the first combined light beam to form the second combined light beam emitted in the preset direction.

3. The laser emitting device according to claim 2, characterized in that: The laser assembly includes a first laser and at least one second laser; a first collimated light corresponding to the first laser and a second collimated light corresponding to the second laser are not parallel; When there are multiple second lasers, the second collimated lights corresponding to the second lasers are parallel to each other; The wave combining device includes a first optical surface corresponding to each of the second lasers; The first optical surface is used to transmit the first collimated light and reflect the corresponding second collimated light; The reflection position of the second collimated light on the first optical surface is the transmission position of the first collimated light on the first optical surface, so that the second collimated light is combined with the first collimated light to form the first combined light beam after being reflected on the first optical surface.

4. The laser emitting device according to claim 2, characterized in that: The laser assembly includes a first laser and at least one second laser, wherein the first collimated light corresponding to the first laser and the second collimated light corresponding to each of the second lasers are parallel to each other; The wave combining device includes a second optical surface corresponding to the first laser and a third optical surface corresponding to each of the second lasers; The second optical surface is used to transmit the first collimated light and reflect the second collimated light; The third optical surface is used to reflect the corresponding second collimated light to the transmission position of the first collimated light on the second optical surface, so that the second collimated light is combined with the first collimated light to form the first combined light beam after being reflected by the second optical surface.

5. The laser emitting device according to claim 2, characterized in that: The wave combining device and the reflective device are connected as a whole.

6. The laser emitting device according to claim 2, characterized in that: The wave combining device and the reflecting device are separately arranged, and the wave combining device is arranged between the collimating lens assembly and the reflecting device.

7. The laser emitting device according to claim 1, characterized in that: It also includes a tube cap, which is arranged on the tube base. The tube cap is provided with a light outlet, and the preset direction passes through the light outlet.

8. The laser emitting device according to claim 2, characterized in that: The first combined light beam is parallel to the first plane.

9. The laser emitting device according to claim 2, characterized in that: The combining device is provided with a wavelength division multiplexing (WDM) coating, and the collimated light of the plurality of lasers is combined through the WDM coating to form the first combined light beam; or, The combining device includes a polarization combiner, and the collimated lights of the multiple lasers are combined through the polarization combiner to form the first combined light beam.

10. The laser emitting device according to claim 1, characterized in that: A mounting piece is provided on the first plane of the tube seat, and the laser assembly, the collimating lens assembly and the wave combining reflection module are all provided on the mounting piece; The mounting member is a semiconductor cooler TEC or a substrate.

11. An optical module, characterized in that: The optical module includes the laser emitting device according to any one of claims 1-10.

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