CN117092754A - Light source module, connector and light source connection system - Google Patents
Light source module, connector and light source connection system Download PDFInfo
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- CN117092754A CN117092754A CN202210514762.8A CN202210514762A CN117092754A CN 117092754 A CN117092754 A CN 117092754A CN 202210514762 A CN202210514762 A CN 202210514762A CN 117092754 A CN117092754 A CN 117092754A
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- light source
- connector
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/262—Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4206—Optical features
Abstract
The embodiment of the application discloses a light source module, a connector and a light source connection system. The light source module comprises a laser and a lens, the lens collimates laser output by the laser, and the collimated laser is output from an optical interface of the light source module. The light source module and the connector can be plugged and unplugged, wherein an optical interface of the light source module is connected with an optical interface of the connector. The connector also includes a lens and a fiber optic mating interface. A lens on the connector concentrates light from the optical interface to the fiber optic adapter interface to facilitate coupling the light into an optical fiber connected to the fiber optic adapter interface. That is, the light source module and the connector adopt a space optical coupling mode, and the optical fiber is not required to be arranged in the light source module to transmit the laser output by the laser, so that the overall size of the light source module can be effectively reduced, and the cost is also reduced.
Description
Technical Field
The present application relates to the field of optical communications, and in particular, to a light source module, a connector, and a light source connection system.
Background
With the increase of communication rate and capacity in data centers, computing centers, and traditional data communication fields, optoelectronics optical modules (Co package Optics, CPO) and On Board optical modules (OBO) are attracting more and more attention. CPO and OBO differ from conventional pluggable modules mainly in: CPO and OBO are in the board and can not be plugged and unplugged, are close to the electric chip, and the light source is usually externally pulled away to become a single pluggable light source.
Light output by a laser of the existing pluggable light source is transmitted to a light outlet of the pluggable light source through an optical fiber. The light outlet of the pluggable light source is provided with a solid optical fiber connector which is used for being connected with an interface on the single board. In addition, the pluggable light source generally requires to output linearly polarized light, and the optical fiber inside the pluggable light source needs to adopt a polarization maintaining optical fiber, so that the implementation cost is high.
Disclosure of Invention
The embodiment of the application provides a light source module, a connector and a light source connection system. The light source module and the connector adopt a space optical coupling mode, and the inside of the light source module does not need to be provided with optical fibers to transmit laser output by the laser, so that the overall size of the light source module can be effectively reduced, and the cost is also reduced.
In a first aspect, an embodiment of the present application provides a light source module. The light source module includes: a housing, a laser, a lens, a circuit board, and an optical interface. The laser, lens and circuit board are located within the housing. The laser and lens are located on the circuit board. The circuit board is used for supplying power to the laser. The laser is used for emitting laser light. The lens is used for collimating the laser light. The collimated laser light is output from the optical interface. The circuit board is provided with an electric interface, and the optical interface and the electric interface are positioned at the pluggable end of the light source module. The optical interface is used for connecting the optical connector, and the electric interface is used for connecting the electric connector.
In this embodiment, the light source module includes a laser and a lens, and the lens collimates laser light output from the laser, and the collimated laser light is output from an optical interface of the light source module. The light source module and the connector can be plugged and unplugged, wherein an optical interface of the light source module is connected with an optical interface of the connector. That is, the light source module and the connector adopt a space optical coupling mode, and the optical fiber is not required to be arranged in the light source module to transmit the laser output by the laser, so that the overall size of the light source module can be effectively reduced, and the cost is also reduced. And the laser emitted by the laser can expand after passing through the lens, so that the power density of the laser is reduced, and the risk of damage to the connection position of the optical interface of the light source module and the connector due to higher emitted power of the laser is also reduced. In addition, no physical contact is generated between the light source module and the connector due to optical fiber connection, so that the abrasion of the optical interface caused by more plugging times is reduced.
In some possible embodiments, the pluggable end of the light source module further includes a limiting structure. The limit structure is used for fixing the position of the optical interface when the optical interface is connected with the optical connector. It should be understood that the connection between optical interface optical connectors refers specifically to alignment on the optical path. The position of the pluggable two ends is fixed through the limiting structure, so that the stability of the light path can be ensured.
In some possible embodiments, the light source module further comprises a floating stage. The floating carrier is positioned in the shell, the laser and the lens are positioned on the floating carrier, and the floating carrier is positioned on the circuit board. The floating carrier is connected with the limiting structure. The limit structure is also used for driving the floating carrier to move when the optical interface is connected with the optical connector so that laser output from the optical interface is aligned with the optical connector. In this embodiment, the limit structure of the light source module and the limit structure of the optical connector are matched with each other. The driving force can be applied to the floating carrier in the process of connecting the limiting structures at the two ends, so that the floating carrier moves to realize fine adjustment of the light path. The fine adjustment of the light path can improve the alignment effect of the light path between the light source module and the optical connector.
In some possible embodiments, the light source module further comprises a floating carrier and a fixed carrier, the floating carrier and the fixed carrier being located within the housing. The laser is located on a fixed stage, the lens is located on a floating stage, and the floating stage and the fixed stage are located on a circuit board. The floating carrier is connected with the limiting structure. The limit structure is also used for driving the floating carrier to move when the optical interface is connected with the optical connector so that laser output from the optical interface is aligned with the optical connector. In this embodiment, the position of the laser is fixed and may not move along with the floating stage. The floating carrier drives the lens to move, so that fine adjustment of the light path can be realized, and the risk of damage to the laser caused by movement is reduced.
In some possible embodiments, the limit structure is specifically configured to drive the floating platform to move in the first direction and/or the second direction. The optical interface is used for connecting the optical connector in a third direction, the first direction is perpendicular to the floating carrier, and the first direction, the second direction and the third direction are perpendicular to each other. In the embodiment, fine adjustment of the optical path can be realized in multiple dimensions, and the effect of practical application is better.
In some possible embodiments, the light source module further comprises an isolator located between the laser and the lens or between the lens and the optical interface. The isolator is used for suppressing reflection of laser light to the laser to avoid affecting performance of the laser.
In some possible embodiments, the light source module further comprises a light assembly housing. The laser and the lens are located within an optical assembly housing, which is located within the enclosure. The collimated laser light is output from one end of the optical module housing to the optical interface. In this embodiment, the optical components are packaged by the optical component housing, so that the influence of the external environment on the performance of the optical components is reduced.
In some possible embodiments, the light source module further comprises a light transmissive element, the light transmissive element being located at the light interface. The light-transmitting element is used for preventing dust, and the air tightness of the light source module is improved.
In a second aspect, embodiments of the present application provide a connector. The connector includes: optical interfaces, electrical interfaces, lenses, and fiber optic adapter interfaces. The optical interface and the electrical interface are located at a first end of the connector and the fiber optic adapter interface is located at a second end of the connector. The electrical interface is used for connecting the electrical interface of the light source module. The optical interface is used for connecting the optical interface of the light source module. The lens is positioned between the optical interface and the optical fiber adapting interface, and the lens is used for converging the light from the optical interface to the optical fiber adapting interface. The fiber optic adapter interface is used for connecting with a fiber optic adapter. In the embodiment, a space optical coupling mode is adopted between the light source module and the connector, so that physical contact generated by optical fiber connection between the light source module and the connector is avoided, and the abrasion of an optical interface caused by more plugging times is reduced.
In some possible embodiments, the first end of the connector further comprises a stop structure. The limit structure is used for fixing the position of the optical interface when the optical interface is connected with the optical interface of the light source module. The position of the pluggable two ends is fixed through the limiting structure, so that the stability of the light path can be ensured.
In some possible embodiments, the connector further comprises a floating carrier. The optical interface, the lens and the fiber optic adapter interface are located on the floating carrier. The floating carrier is connected with the limiting structure. The limit structure is also used for driving the floating carrier to move when the optical interface is connected with the optical interface of the light source module so as to align the laser output from the optical interface of the light source module with the optical interface. The floating carrier is driven to move, so that fine adjustment of the light path can be realized, and the light path alignment effect between the light source module and the optical connector is improved.
In some possible embodiments, the limit structure is specifically configured to drive the floating platform to move in the first direction and/or the second direction. The optical interface is used for connecting the optical interface of the light source module in a third direction. The first direction is perpendicular to the floating carrier, and the first direction, the second direction and the third direction are perpendicular to each other. In the embodiment, fine adjustment of the optical path can be realized in multiple dimensions, and the effect of practical application is better.
In some possible embodiments, the connector further comprises an isolator located between the optical interface and the lens or between the lens and the fiber optic mating interface. The isolator is used for inhibiting light from the optical interface from reflecting towards the optical interface so as to avoid affecting the performance of the laser in the light source module.
In a third aspect, an embodiment of the present application provides an optical connector. The optical connector includes: optical interfaces, lenses and fiber optic adapter interfaces. The optical interface is located at a first end of the optical connector and the fiber optic adapter interface is located at a second end of the optical connector. The optical interface is used for connecting with an optical interface of the light source module. The lens is positioned between the optical interface and the optical fiber adaptation interface, and the lens is used for converging the light from the optical interface to the optical fiber adaptation interface. The optical fiber adapter interface is used for connecting an optical fiber adapter. In the embodiment, a space optical coupling mode is adopted between the light source module and the optical connector, so that physical contact generated by optical fiber connection between the light source module and the optical connector is avoided, and abrasion of an optical interface caused by more plugging times is reduced.
In some possible embodiments, the first end of the optical connector further comprises a stop structure. The limit structure is used for fixing the position of the optical interface when the optical interface is connected with the optical interface of the light source module. The position of the pluggable two ends is fixed through the limiting structure, so that the stability of the light path can be ensured.
In some possible embodiments, the optical connector further comprises a floating carrier. The optical interface, the lens and the fiber optic adapter interface are located on the floating carrier. The floating carrier is connected with the limiting structure. The limit structure is also used for driving the floating carrier to move when the optical interface is connected with the optical interface of the light source module so as to align the laser output from the optical interface of the light source module with the optical interface. The floating carrier is driven to move, so that fine adjustment of the light path can be realized, and the light path alignment effect between the light source module and the optical connector is improved.
In some possible embodiments, the limit structure is specifically configured to drive the floating platform to move in the first direction and/or the second direction. The optical interface is used for connecting the optical interface of the light source module in a third direction. The first direction is perpendicular to the floating carrier, and the first direction, the second direction and the third direction are perpendicular to each other. In the embodiment, fine adjustment of the optical path can be realized in multiple dimensions, and the effect of practical application is better.
In some possible embodiments, the optical connector further comprises an isolator located between the optical interface and the lens or between the lens and the fiber optic mating interface. The isolator is used for inhibiting light from the optical interface from reflecting towards the optical interface so as to avoid affecting the performance of the laser in the light source module.
In a fourth aspect, embodiments of the present application provide a light source connection system. The light source connection system includes: the light source module as described in any of the embodiments of the first aspect, the connector and the fiber optic adapter as described in any of the embodiments of the second aspect. The optical interface of the light source module is used for being connected with the optical interface of the connector. The electrical interface of the light source module is used for connecting the electrical interface of the connector. The fiber optic adapter interface of the connector is used to connect the fiber optic adapters. It should be understood that the connector is an optoelectronic integrated connector that integrates an optical connector and an electrical connector, or also referred to as a composite connector.
In a fifth aspect, embodiments of the present application provide a light source connection system. The light source connection system includes: the light source module as described in any of the embodiments of the first aspect, the optical connector, the electrical connector and the fiber optic adapter as described in any of the embodiments of the third aspect. The optical interface of the light source module is used for connecting with the optical interface of the optical connector. The electrical interface of the light source module is used for connecting the electrical connector. The fiber optic adapter interface of the optical connector is used to connect the fiber optic adapter.
In a sixth aspect, an embodiment of the present application provides an optical communication apparatus. The optical communication device includes: an optical module, an electrical chip, a light source module as described in any of the embodiments of the first aspect, a connector and a fiber optic adapter as described in any of the embodiments of the second aspect. The optical interface of the light source module is used for being connected with the optical interface of the connector. The electrical interface of the light source module is used for connecting the electrical interface of the connector. The fiber optic adapter interface of the connector is used to connect the fiber optic adapters. The optical fiber adapter is used for connecting with the optical module through optical fibers. The electrical interface of the connector is electrically connected with the electrical chip.
In a seventh aspect, an embodiment of the present application provides an optical communication apparatus. The optical communication device includes: an optical module, an electrical chip, a light source module as described in any of the embodiments of the first aspect, an optical connector, an electrical connector and a fiber optic adapter as described in any of the embodiments of the third aspect. The optical interface of the light source module is used for connecting with the optical interface of the optical connector. The electrical interface of the light source module is used for connecting the electrical connector. The fiber optic adapter interface of the optical connector is used to connect the fiber optic adapter. The optical fiber adapter is used for connecting with the optical module through optical fibers. The electrical connector is electrically connected with the electrical chip.
In the embodiment of the application, the light source module comprises a laser and a lens, the lens collimates laser output by the laser, and the collimated laser is output from the optical interface of the light source module. The light source module and the connector can be plugged and unplugged, wherein an optical interface of the light source module is connected with an optical interface of the connector. That is, the light source module and the connector adopt a space optical coupling mode, and the optical fiber is not required to be arranged in the light source module to transmit the laser output by the laser, so that the overall size of the light source module can be effectively reduced, and the cost is also reduced. And the laser emitted by the laser can expand after passing through the lens, so that the power density of the laser is reduced, and the risk of damage to the connection position of the optical interface of the light source module and the connector due to higher emitted power of the laser is also reduced. In addition, no physical contact is generated between the light source module and the connector due to optical fiber connection, so that the abrasion of the optical interface caused by more plugging times is reduced.
Drawings
Fig. 1 is a schematic diagram of an application scenario according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a light source connection system according to an embodiment of the present application;
FIG. 3 is an exploded view of a light source module according to an embodiment of the present application;
FIG. 4 is a schematic diagram showing an overall structure of a light source module and a connector according to an embodiment of the present application;
FIG. 5 is a schematic view of a first partial structure of a light source module according to an embodiment of the application;
FIG. 6 is a schematic view of a connector according to an embodiment of the present application;
FIG. 7 is a schematic view of a partial structure of a light source module connected to a connector according to an embodiment of the application;
FIG. 8 is a schematic view of a portion of a connector coupled to a fiber optic adapter according to an embodiment of the present application;
FIG. 9 is a schematic diagram of a second partial structure of a light source module according to an embodiment of the application;
fig. 10 is a schematic view of a third partial structure of a light source module according to an embodiment of the application;
FIG. 11 is a schematic view of a partial structure of a connector according to an embodiment of the present application;
fig. 12 is a schematic view of another structure of the connector according to the embodiment of the present application.
Detailed Description
The embodiment of the application provides a light source module, a connector and a light source connection system. The light source module and the connector adopt a space optical coupling mode, and the inside of the light source module does not need to be provided with optical fibers to transmit laser output by the laser, so that the overall size of the light source module can be effectively reduced, and the cost is also reduced.
It should be noted that the terms "first," "second," and the like in the description and the claims and drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than described of illustrated herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic diagram of an application scenario according to an embodiment of the present application. As shown in fig. 1, on Board Optics (OBO), an electrical chip, and a connector are fixed On a Board. The OBO is closer to the electrical chip, and the OBO is connected with the connector through an optical fiber. The OBO does not comprise a light source, and the independent light source module is connected with a connector on the single board in a pluggable manner. The pluggable light source modules can form a pluggable light source pool, and the pluggable light source pool is easy to replace and maintain. It should be understood that the application scenario shown in fig. 1 is provided as an example, and the pluggable light source module may be applied to other scenarios as well. For example, the optical-electrical-seal optical module (Co package Optics, CPO) also does not include a light source, and the pluggable light source module can also be applied to the scene where the CPO is located.
The following first describes a light source connection system provided in an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a light source connection system according to an embodiment of the application. As shown in fig. 2, the light source module is connected with the connector in a pluggable manner. The fiber optic adapter is also removably connected to the connector. The fiber optic adapter is connected to one end of an optical fiber, the other end of which may be connected to an OBO as shown in fig. 1. After the light source module is connected with the connector, light output by the light source module is coupled into an optical fiber connected with the optical fiber adapter through the connector.
The pluggable light source module and the connector provided by the application are respectively described in detail below.
Fig. 3 is an exploded view of a light source module according to an embodiment of the application. As shown in fig. 3, the light source module includes: housing 101, laser 102, lens 103, optical interface 104, and circuit board 105. Wherein the laser 102, lens 103 and circuit board 105 are located within the housing 101. The laser 102 and lens 103 are located on a circuit board 105. The circuit board 105 is used to power the laser 102. The lens 103 is used for collimating the laser light emitted by the laser 102, and the collimated laser light is output from the optical interface 104. An electrical interface 106 is also provided on the circuit board 105. Both the optical interface 104 and the electrical interface 106 are located at the pluggable end of the light source module. Specifically, optical interface 104 is used to connect an optical connector and electrical interface 106 is used to connect an electrical connector.
It can be seen that the present application provides a light source module with the same side of photoelectricity. The optical connector and the electrical connector that are connected with the light source module in a pluggable manner may be two connectors that are independent of each other, or may be an integrated optoelectronic connector, which is not limited herein. For ease of description, the optical connector and the electrical connector will not be distinguished hereinafter, and the connector will be collectively described. A connector that includes only an optical interface may be considered an optical connector. A connector that includes only an electrical interface may be considered an electrical connector. Connectors that include both optical and electrical interfaces may be considered optoelectronic integrated connectors or also referred to as composite connectors.
The number of the lasers 102 and the lenses 103 in the light source module is not limited by the present application. For example, the light source module includes a laser array composed of a plurality of lasers and a lens array composed of a plurality of lenses.
In one possible embodiment, as shown in fig. 3, the light source module further includes an isolator 107. An isolator 107 is located between the lens 103 and the optical interface 104. The isolator 107 is a passive device that allows light to pass in one direction and prevents light from passing in the opposite direction, and serves to limit the direction of the light so that the light can be transmitted in only one direction. Thus, the isolator 107 can suppress reflection of the laser light toward the laser 102, avoiding affecting the performance of the laser 102. It should be appreciated that in practice, the isolator 107 may also be located between the laser 102 and the lens 103.
Fig. 4 is a schematic diagram of an overall structure of a light source module and a connector according to an embodiment of the application. As shown in fig. 3 or 4, in one possible embodiment, a light transmissive element is provided at the location of the optical interface 104. The light-transmitting element serves as a light window on the housing 101 and forms a closed whole with the housing 101. The light-transmitting element can effectively prevent dust from entering the housing 101 from the light interface 104 on the basis of ensuring that the light interface 104 can transmit light, thereby enhancing the air tightness of the light source module. The light-transmitting element may specifically be glass or resin or the like. It should be appreciated that the optically transmissive element may also be coated with an anti-reflection film to reduce the reflection of laser light toward the laser 102.
It should be noted that, in some special situations, for example, the cleanliness of the external environment is high, no pollution such as dust is generated, and the optical interface 104 may be located without any medium, but only an opening on the housing 101. Alternatively, in some scenarios, the light transmissive element may also be provided by a connector, and the light transmissive element on the connector may be mounted on the optical interface 104 when the light source module is connected to the connector.
In one possible embodiment, the electrical interface 106 may be configured as a gold finger as shown in FIG. 4. The gold finger protrudes from the inside of the housing 101 as a part of the circuit board 105 so as to be connected with the connector. It should be understood that other types of electrical interfaces may be used in practice, and are not limited in this particular context.
Fig. 5 is a schematic diagram of a first partial structure of a light source module according to an embodiment of the application. As shown in fig. 5, the light source module further includes an optical assembly housing (optical sub assembly BOX, OSA BOX) 108. The light assembly housing 108 is located within the enclosure 101. The optics, laser 102, lens 103 and isolator 107 are located within an optics module housing 108. The light output from the laser 102 is output from one end of the optical module housing 108 to the optical interface 104 through the lens 103 and the isolator 107. That is, the light transmitting end of the light module housing 108 may be made of a light transmitting material such as glass or resin.
Fig. 6 is a schematic structural diagram of a connector according to an embodiment of the present application. As shown in fig. 6, an embodiment of the present application provides an optoelectronic integrated connector. The connector includes: an optical interface 201, a lens 202, a fiber optic adapter interface 203, and an electrical interface 204. The optical interface 201 and the electrical interface 204 are located at a first end of the connector and the fiber optic mating interface 203 is located at a second end of the connector. The first end of the connector is used for connecting the pluggable end of the light source module described in the embodiment. Specifically, the optical interface 201 of the connector is used to connect the optical interface 104 of the light source module, and the electrical interface 204 of the connector is used to connect the electrical interface 106 of the light source module. The fiber optic adapter interface 203 is used to connect fiber optic adapters. The lens 202 is located between the optical interface 201 and the fiber-optic adapter interface 203. The lens 202 is used to concentrate light from the optical interface 201 to the fiber optic adapter interface 203 in order to couple light into the optical fibers of the fiber optic adapter connection.
Note that, the connection between the optical interface 201 of the connector and the optical interface 104 of the light source module refers to not physical contact but alignment on the optical path. The light output from the optical interface 104 of the light source module is input from the optical interface 201 of the connector. The electrical interface 204 of the connector may provide power to or enable communication with the light source module through the electrical interface 106 connecting the light source module. The fiber optic adapter may be a pluggable fiber optic connector such as a small form factor connector (LC) connector, or the fiber optic adapter may be an array of optical fibers secured to the fiber optic adapter interface 203.
Fig. 7 is a schematic view of a partial structure of a connection between a light source module and a connector according to an embodiment of the application. As shown in fig. 7, in some possible embodiments, the connector further comprises an isolator 205. Here, the isolator 205 can suppress reflection of the laser light toward the laser 102, similarly to the function of the isolator 107 in the light source module described above. The isolator 205 is located between the optical interface 201 and the lens 202 or between the lens 202 and the fiber mating interface 203. It should be understood that the light source module and the connector may be provided with an isolator, or any one of the light source module and the connector may be provided with an isolator.
Fig. 8 is a schematic view of a partial structure of a connector connected to a fiber optic adapter according to an embodiment of the present application. As shown in fig. 8, in some possible embodiments, the lens 202 may also be integrated on the fiber optic adapter. As one example, a lens 202 is machined on the end face of the fiber optic adapter. The lens 202 integrated on the fiber optic adapter may also couple light from the optical interface 201 into the optical fiber.
It should be noted that the light source module and the connector may further include a limit structure that is matched with each other, so as to fix the positions of the light source module and the connector when they are connected. The following describes the limiting structure on the light source module and the connector.
As shown in fig. 4, the pluggable end of the light source module includes a limit structure 109. As shown in fig. 6, the first end of the connector includes a limit structure 206. When the pluggable end of the light source module is connected to the first end of the connector, the limiting structure 109 and the limiting structure 206 also complete the physical docking. As one example, the spacing structure 109 is a positioning post and the spacing structure 206 is a positioning hole. The positioning column and the positioning hole are mutually matched, and the effect of fixing the light source module and the connector can be achieved when the positioning column is inserted into the positioning hole. Fig. 2 shows a state when the positioning column is connected with the positioning hole.
It should be noted that in practical applications, the accuracy of the alignment of the optical path between the light source module and the connector is very high, and it is usually required to reach two levels of micrometers or even sub-micrometers. However, after the light source module and the connector are connected, there is a possibility that the effect of the optical path alignment is not ideal due to a machining error or the like. Therefore, the application also provides a way for fine tuning the optical path. Specifically, fine adjustment of the optical path may be achieved by the light source module, or fine adjustment of the optical path may be achieved by the connector. The following is a detailed description.
Fig. 9 is a schematic diagram of a second partial structure of a light source module according to an embodiment of the application. As shown in fig. 9, the light source module further includes a floating carrier 110, and the floating carrier 110 is located on the circuit board 105. The laser 102, lens 103 and isolator 107 are located on a floating stage 110. The floating carrier 110 is connected to the limiting structure 109. In the process of connecting the limit structure 109 with the limit structure 206 of the connector, the limit structure 109 applies a driving force to the floating carrier 110, so that the floating carrier 110 moves. Thus, the floating carrier 110 drives the laser 102, the lens 103 and the isolator 107 to move so as to realize fine adjustment of the optical path. Taking the example that the limiting structure 109 is a positioning column and the limiting structure 206 is a positioning hole, the size of the positioning hole gradually decreases from outside to inside. The positioning column is connected with the positioning hole, and the light path alignment effect between the light source module and the connector is better along with the penetration of the rotation of the positioning column.
Fig. 10 is a schematic diagram of a third partial structure of a light source module according to an embodiment of the application. As shown in fig. 10, the light source module includes a floating stage 110 and a fixed stage 111. The floating stage 110 and the fixed stage 111 are located on the circuit board 105. The laser 102 is located on a stationary stage 111. The lens 103 and the spacer 107 are located on a floating stage 110. The floating carrier 110 is connected to the limiting structure 109. The structure shown in fig. 10 differs from the structure shown in fig. 9 in that the position of the laser 102 in fig. 10 is fixed and may not move along with the floating stage 110. The floating carrier 110 drives the lens 103 and the isolator 107 to move, so that fine adjustment of the optical path can be realized.
Fig. 11 is a schematic view of a partial structure of a connector according to an embodiment of the application. As shown in fig. 11, the connector includes a floating carrier 207. The optical interface 201, lens 202 and fiber-optic adapter interface 203 are located on a floating stage 207. The floating carrier 207 is connected to the limiting structure 206. In the process of connecting the limit structure 206 with the limit structure 109 of the light source module, the limit structure 206 applies a driving force to the floating carrier 207, so that the floating carrier 207 moves. Thereby, the floating carrier 207 drives the optical interface 201, the lens 202 and the optical fiber adapting interface 203 to move so as to realize fine adjustment of the optical path.
As shown in fig. 9 and 10, the light source module and the connector are connected in the Z direction. The limit structure 109 may drive the floating stage 110 to move in the X-direction and/or the Y-direction so as to achieve fine adjustment of the optical path in multiple dimensions. Wherein the Y direction is perpendicular to the circuit board 105, and the x direction, the Y direction, and the Z direction are perpendicular to each other. Similarly, as shown in fig. 11, the limiting structure 206 may also drive the floating platform 207 to move in the X-direction and/or the Y-direction.
Fig. 12 is a schematic view of another structure of the connector according to the embodiment of the present application. As shown in fig. 12, the embodiment of the present application provides a stand-alone optical connector, unlike the optoelectronic integrated connector described in the above embodiment. The structure of the connector is similar to that of the connector shown in fig. 6, 7, 8 and 11 except that the connector does not include an electrical interface, and the details are not repeated here. It should be understood that if the optical connector shown in fig. 12 is used, a mating electrical connector needs to be provided for the optical-to-electrical light source module provided in the embodiment of the present application. The electrical connector with the electrical interface is not particularly limited as long as the electrical connector is within the protection scope of the present application.
In the embodiment of the application, the light source module comprises a laser and a lens, the lens collimates laser output by the laser, and the collimated laser is output from an optical interface of the light source module. The light source module and the connector can be plugged and unplugged, wherein an optical interface of the light source module is connected with an optical interface of the connector. That is, the light source module and the connector adopt a space optical coupling mode, and the optical fiber is not required to be arranged in the light source module to transmit the laser output by the laser, so that the overall size of the light source module can be effectively reduced, and the cost is also reduced. And the laser emitted by the laser can expand after passing through the lens, so that the power density of the laser is reduced, and the risk of damage to the connection position of the optical interface of the light source module and the connector due to higher emitted power of the laser is also reduced. In addition, no physical contact is generated between the light source module and the connector due to optical fiber connection, so that the abrasion of the optical interface caused by more plugging times is reduced.
Claims (20)
1. A light source module, comprising: housing, laser, lens, circuit board and optical interface, wherein:
the laser, the lens and the circuit board are located within the housing;
the laser and the lens are positioned on the circuit board, the circuit board is used for supplying power to the laser, the laser is used for emitting laser, the lens is used for collimating the laser, and the collimated laser is output from the optical interface;
the circuit board is provided with an electric interface, the optical interface and the electric interface are positioned at the pluggable end of the light source module, the optical interface is used for being connected with an optical connector, and the electric interface is used for being connected with an electric connector.
2. The light source module of claim 1, wherein the pluggable end of the light source module comprises the limit structure for securing a position of the optical interface when the optical interface is connected with the optical connector.
3. The light source module of claim 2 further comprising a floating carrier positioned within the housing, the laser and the lens positioned on the floating carrier, the floating carrier positioned on the circuit board, the floating carrier coupled to the spacing structure;
the limit structure is also used for driving the floating carrier to move when the optical interface is connected with the optical connector so as to align the laser output from the optical interface with the optical connector.
4. The light source module of claim 2, further comprising a floating stage and a fixed stage, the floating stage and the fixed stage being located within the housing, the laser being located on the fixed stage, the lens being located on the floating stage, the floating stage and the fixed stage being located on the circuit board, the floating stage being connected to the spacing structure;
the limit structure is also used for driving the floating carrier to move when the optical interface is connected with the optical connector so as to align the laser output from the optical interface with the optical connector.
5. The light source module of claim 3 or 4, wherein the limit structure is specifically configured to drive the floating mount to move in a first direction and/or a second direction, wherein the optical interface is configured to connect the optical connector in a third direction, wherein the first direction is perpendicular to the floating mount, and wherein the first direction, the second direction, and the third direction are perpendicular to each other.
6. The light source module of any one of claims 1-5, further comprising an isolator between the laser and the lens or between the lens and the optical interface, the isolator for inhibiting reflection of the laser light toward the laser.
7. The light source module of any one of claims 1-6 further comprising a light assembly housing, the laser and the lens being located within the light assembly housing, the light assembly housing being located within the housing, the collimated laser light being output from one end of the light assembly housing to the optical interface.
8. A light source module as recited in any one of claims 1-7, wherein the light source module further comprises a light transmissive element, the light transmissive element being located at the light interface, the light transmissive element being for dust protection.
9. A connector, comprising: optical interface, electrical interface, lens and fiber optic adapter interface, wherein:
the optical interface and the electrical interface are positioned at the first end of the connector, the optical fiber adapter interface is positioned at the second end of the connector, the electrical interface is used for being connected with the electrical interface of the light source module, the optical interface is used for being connected with the optical interface of the light source module, the lens is positioned between the optical interface and the optical fiber adapter interface, the lens is used for converging light from the optical interface to the optical fiber adapter interface, and the optical fiber adapter interface is used for being connected with the optical fiber adapter.
10. The connector of claim 9, wherein the first end of the connector further comprises a stop structure for fixing a position of the optical interface when the optical interface is connected with the optical interface of the light source module.
11. The connector of claim 10, further comprising a floating carrier, the optical interface, the lens, and the fiber optic adapter interface being located on the floating carrier, the floating carrier being connected to the limit structure;
the limit structure is also used for driving the floating carrier to move when the optical interface is connected with the optical interface of the light source module so as to align the laser output from the optical interface of the light source module with the optical interface.
12. The connector of claim 11, wherein the limit structure is specifically configured to drive the floating carrier to move in a first direction and/or a second direction, wherein the optical interface is configured to connect the optical interface of the light source module in a third direction, wherein the first direction is perpendicular to the floating carrier, and wherein the first direction, the second direction, and the third direction are perpendicular to each other.
13. The connector of any one of claims 9 to 12, further comprising an isolator between the optical interface and the lens or between the lens and the fiber optic mating interface, the isolator for inhibiting reflection of light from the optical interface toward the optical interface.
14. An optical connector, comprising: optical interface, lens and fiber optic adapter interface, wherein:
the optical interface is located at a first end of the optical connector, the optical fiber adapter interface is located at a second end of the optical connector, the optical interface is used for being connected with an optical interface of the light source module, the lens is located between the optical interface and the optical fiber adapter interface, the lens is used for converging light from the optical interface to the optical fiber adapter interface, and the optical fiber adapter interface is used for being connected with the optical fiber adapter.
15. The optical connector of claim 14, wherein the first end of the optical connector further comprises a stop structure for fixing a position of the optical interface when the optical interface is connected with the optical interface of the light source module.
16. The optical connector of claim 15, further comprising a floating carrier, the optical interface, the lens, and the fiber optic adapter interface being located on the floating carrier, the floating carrier being connected to the limit structure;
the limit structure is also used for driving the floating carrier to move when the optical interface is connected with the optical interface of the light source module so as to align the laser output from the optical interface of the light source module with the optical interface.
17. The optical connector of claim 16, wherein the limit structure is specifically configured to drive the floating carrier to move in a first direction and/or a second direction, wherein the optical interface is configured to connect the optical interface of the light source module in a third direction, wherein the first direction is perpendicular to the floating carrier, and wherein the first direction, the second direction, and the third direction are perpendicular to each other.
18. The optical connector of any one of claims 14 to 17, further comprising an isolator between the optical interface and the lens or between the lens and the fiber optic mating interface, the isolator for inhibiting reflection of light from the optical interface toward the optical interface.
19. A light source connection system, comprising: the light source module of any one of claims 1 to 8, the connector of any one of claims 9 to 13, and the fiber optic adapter, wherein:
the optical interface of the light source module is used for being connected with the optical interface of the connector, the electrical interface of the light source module is used for being connected with the electrical interface of the connector, and the optical fiber adapter interface of the connector is used for being connected with the optical fiber adapter.
20. A light source connection system, comprising: the light source module of any one of claims 1 to 8, the optical connector, the electrical connector, and the fiber optic adapter of any one of claims 14 to 18, wherein:
the optical interface of the light source module is used for connecting the optical interface of the optical connector, the electrical interface of the light source module is used for connecting the electrical connector, and the optical fiber adapter interface of the optical connector is used for connecting the optical fiber adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210514762.8A CN117092754A (en) | 2022-05-12 | 2022-05-12 | Light source module, connector and light source connection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210514762.8A CN117092754A (en) | 2022-05-12 | 2022-05-12 | Light source module, connector and light source connection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117092754A true CN117092754A (en) | 2023-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210514762.8A Pending CN117092754A (en) | 2022-05-12 | 2022-05-12 | Light source module, connector and light source connection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117092754A (en) |
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2022
- 2022-05-12 CN CN202210514762.8A patent/CN117092754A/en active Pending
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