Light source device and optical coupling structure and photoelectric system using same

Abstract

An optical coupling structure is suitable for a photoelectric device and comprises a light source device. The light source device comprises a fixing plate, a strip-shaped substrate located on the fixing plate and a light emitting unit located on the strip-shaped substrate. The light-emitting unit includes a functional portion and a light-emitting portion, and the functional portion and the light-emitting portion are divided into a plurality of light emitters, and the strip-shaped substrate is configured to cross the bottom of each light emitter. The waveguide device is arranged at the position, adjacent to the light emitter of the light source, of the butt joint face of the fixing plate, and optical signal transmission from the light emitter can be achieved. The fiber assembly is connected with the waveguide device.

Description

Technical Field

[0001] The present invention relates to the technical field of optoelectronic integrated circuits (OEICs), and in particular to a light source device, an optical coupling structure and an optoelectronic system suitable for optoelectronic devices. Background Art

[0002] Optoelectronic integrated circuits (OEICs) use photons instead of electrons for computing and data transmission in integrated circuits, bringing great benefits to the development of industries that require high-performance data exchange, long-distance interconnection, 5G facilities and computing equipment. OEICs are configured with photonic integrated circuits (PICs) and electronic integrated circuits (EICs), usually packaged together as co-packaged optical devices (CPOs).

[0003] Generally speaking, the production of optical communication modules requires that the light-emitting components be bonded to the substrate separately first, and then the components are combined and bonded through the optical coupling alignment process to complete the optical communication module. However, during the optical coupling process, active components such as laser diodes or light-emitting diodes must be driven and actively aligned with the optical fiber. Once the optical communication module is configured with multiple light-emitting components, the above-mentioned active alignment step of optical coupling must be performed on each light-emitting component. This method is quite time-consuming and can easily cause inconsistent optical path positions between multiple light-emitting components, thereby affecting the transmission quality of the optical signal. Summary of the invention

[0004] The object of the present application is to provide an optical coupling structure suitable for an optoelectronic device, which is configured with multiple light emitters and can be optically aligned with a waveguide device at one time, and can ensure accurate and efficient optical alignment.

[0005] Another object of the present application is to provide a light source device as an external high-power light source for a photoelectric device.

[0006] To achieve the above-mentioned purpose, one aspect of the present application is to provide an optical coupling structure suitable for an optoelectronic device, the optical coupling structure comprising a light source device, a waveguide device and an optical fiber assembly. The light source device comprises a fixing plate, a strip substrate arranged on the fixing plate, and a light emitting unit arranged on the strip substrate. The light emitting unit comprises a functional part and a light emitting part, the functional part and the light emitting part are divided into a plurality of light emitters, and the strip substrate is configured to span the bottom of each light emitter. A waveguide device is arranged adjacent to the mating surface of the fixing plate and the light emitter of the light source device to transmit an optical signal from the light emitter. The optical fiber assembly is connected to the waveguide device.

[0007] Optionally, the light emitters are spaced apart from each other and aligned in an array.

[0008] Optionally, the strip substrate includes a driving circuit coupled to each of the light emitters, and the driving circuit is configured to provide a driving voltage to the light emitters.

[0009] Optionally, the optical transmitter is a laser transmitter, and each optical transmitter is optically coupled to the waveguide device simultaneously through a one-time active alignment process.

[0010] Optionally, the waveguide device comprises a plurality of optical waveguide channels, the plurality of optical waveguide channels are spaced apart from each other at a pitch, and the pitch is the same as a pitch between adjacent optical emitters.

[0011] Optionally, the strip-shaped substrate is arranged close to the butt joint surface of the fixing plate, and the light emitters respectively emit light beams in a straight line direction toward the optical waveguide channel.

[0012] Optionally, the waveguide device includes a guide surface, which is located at the front end of the waveguide device, the optical waveguide channel extends to the guide surface, and the guide surface is configured to face and be close to the fixing plate, so that the light emitter is aligned with the optical waveguide channel, and a hollow space is retained between the light emitter and the optical waveguide channel.

[0013] Optionally, the optical fiber assembly includes a support seat and a plurality of optical fibers, a portion of the optical fibers are located at the support seat, and one end of each optical fiber terminates at an edge of the support seat close to the waveguide device.

[0014] Optionally, the frame plate is configured to support the optoelectronic device, the optical coupling structure is mounted on the frame plate, and the frame plate, the optoelectronic device and the optical coupling structure together constitute an optoelectronic system.

[0015] Another object of the present application is to provide a light source device suitable for use with an optoelectronic device, and comprising a fixing plate, a strip substrate and a light-emitting unit. The strip substrate is arranged on the fixing plate. The light-emitting unit is arranged on the strip substrate, and comprises a functional part, a light-emitting part and a plurality of electrodes electrically connecting the light-emitting unit and the strip substrate. The functional part and the light-emitting part are divided into a plurality of light emitters, and the plurality of electrodes are respectively arranged on the plurality of light emitters.

[0016] Optionally, the functional portion includes an N-type semiconductor structure and a P-type semiconductor structure, and the light emitting portion is disposed between the N-type semiconductor structure and the P-type semiconductor structure.

[0017] Optionally, the strip substrate includes a driving circuit coupled to each of the light emitters to provide a driving voltage to the light emitters.

[0018] Optionally, a waveguide device and an optical fiber assembly are provided to be optically coupled to the light source device, and the light emitters are spaced apart from each other and aligned in an array.

[0019] Optionally, the optical transmitter is a laser transmitter, and each of the optical transmitters is optically coupled to the waveguide device simultaneously through a one-time active alignment process.

[0020] Optionally, the waveguide device comprises a plurality of optical waveguide channels, wherein the plurality of optical waveguide channels are spaced apart from each other at a pitch, and the pitch is the same as a pitch between adjacent optical emitters.

[0021] Optionally, the waveguide device includes a guide surface, which is located at the front end of the waveguide device, the optical waveguide channel extends to the guide surface, and the guide surface is configured to face and be close to the fixing plate, so that the light emitter is aligned with the optical waveguide channel, and a hollow space is retained between the light emitter and the optical waveguide channel.

[0022] Optionally, a frame plate is provided for supporting the optoelectronic device, the light source device is mounted on the frame plate, and the frame plate, the optoelectronic device and the light source device together constitute a optoelectronic system.

[0023] Another aspect of the present application is to provide an optoelectronic system, including: an optical coupling structure and an optoelectronic device. The optical coupling structure includes a light source device, a waveguide device, and an optical fiber assembly. The light source device includes: a fixed plate; a strip substrate located on the fixed plate; and a light-emitting unit located on the strip substrate, and the light-emitting unit includes a functional part and a light-emitting part. The functional part and the light-emitting part are divided into a plurality of light emitters. The waveguide device is arranged adjacent to the fixed plate and the light emitter of the light source device to transmit the optical signal from the light emitter. The optical fiber assembly includes a plurality of optical fibers and is connected to the waveguide device. The optoelectronic device includes a main circuit board and a plurality of detachable optical transceiver modules arranged on the peripheral portion of the main circuit board. Each detachable optical transceiver module includes a first connector and a second connector. The first connector is arranged on the main circuit board and includes a base and a waveguide device arranged in the base. The second connector is arranged at one end of each optical fiber. The second connector is detachably connected to the first connector.

[0024] Optionally, the optical transmitter is a laser transmitter, and each of the optical transmitters is optically coupled to the waveguide device simultaneously through a one-time active alignment process.

[0025] Optionally, the optoelectronic system further includes a frame plate for supporting the optoelectronic device and the optical coupling structure.

[0026] Optionally, the optical fiber assembly includes a support seat, a portion of the optical fiber is located on the support seat, and the other end of each optical fiber terminates at an edge of the support seat close to the waveguide device.

[0027] In the embodiment of the present application, the light source device of the optical coupling structure serves as an external light source (ELS) of the optoelectronic device, replacing the traditional light source elements that are individually molded as one body, and realizes optical coupling with multiple optical paths at one time, thus avoiding the problem of high manufacturing cost and poor assembly efficiency caused by the traditional multiple light source elements each having to go through the complex and time-consuming optical alignment and coupling process of the lens assembly between the light source element and the optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to describe the technical solutions in the embodiments of the present application, the following briefly introduces the drawings describing the embodiments. The drawings in the following description only illustrate some embodiments of the present application, and those skilled in the art can still derive other drawings from these drawings without creative efforts.

[0029] Figure 1 A schematic diagram of a light coupling structure provided in an embodiment of the present application.

[0030] Figure 1A for Figure 1 A locally enlarged schematic diagram of the optical coupling structure.

[0031] Figure 2 for Figure 1 Schematic diagram of the optical coupling structure.

[0032] Figure 2A for Figure 2 A locally enlarged schematic diagram of the optical coupling structure.

[0033] Figure 3 for Figure 1 Schematic top view of.

[0034] Figure 4 For an embodiment of the present application Figure 3 Schematic cross-sectional view taken along line segment AA.

[0035] Figure 5A FIG. 4 is a cross-sectional schematic diagram of an optical coupling structure according to an embodiment of the present application.

[0036] Figure 5B FIG. 4 is a cross-sectional schematic diagram of an optical coupling structure according to an embodiment of the present application.

[0037] Figure 5C FIG. 4 is a cross-sectional schematic diagram of an optical coupling structure according to an embodiment of the present application.

[0038] Figure 6 Schematic diagram of a photovoltaic system according to an embodiment of the present application.

[0039] Fig. 7A It is a three-dimensional schematic diagram of a detachable optical transceiver module according to an embodiment of the present application.

[0040] Figure 7B for Fig. 7A Schematic diagram of the decomposition. DETAILED DESCRIPTION

[0041] The following embodiments will illustrate specific practicable embodiments of the present application with reference to the accompanying drawings. Directional terms described in the present application, such as up, down, front, back, left, right, inside, outside, side, etc., are only referenced to the directions of the accompanying drawings, so the directional terms used are intended to be used to describe and understand the present application, but the present application is not limited thereto.

[0042] It should be understood that although the terms first, second, etc. may be used herein to describe various components, these components should not be limited by these terms. Unless otherwise specified, these terms are only used to distinguish one component from another component. Therefore, without departing from the teachings of the present application, the first component, first part, or first portion discussed below may also be referred to as the second component, second part, or second portion. In addition, the present application may reuse reference numbers and / or letters in various examples, and this repetition is for the purpose of simplicity and clarity, and does not itself define the relationship between the various embodiments and / or configurations discussed.

[0043] The present application provides an optical coupling structure for an optoelectronic device. In some embodiments, the optoelectronic device may be a co-packaged optical (CPO) device that integrates at least one electronic integrated circuit (EIC) and at least one photonic integrated circuit (PIC) in a single package for electro-optical conversion or photoelectric conversion. Preferably, the optical coupling structure provided in the embodiments of the present application can be used as a high-power external light source for an optoelectronic device.

[0044] Reference Figure 1 to Figure 2 , Figure 1 A schematic diagram of a light coupling structure 100 provided in an embodiment of the present application is shown in FIG. Figure 1A for Figure 1 A local enlarged schematic diagram of the optical coupling structure. Figure 2 for Figure 1 The exploded schematic diagram of the optical coupling structure 100 is shown in FIG. Figure 1 and Figure 2, the optical coupling structure 100 includes a light source device 10, a waveguide device 20, and an optical fiber assembly 30. Specifically, the waveguide device 20 is attached to one end of the optical fiber assembly 30, and the light source device 10 is attached to the end of the waveguide device 20 away from the optical fiber assembly 30. In this embodiment, the light source device 10 is used to transmit light to the optical fiber assembly 30 via the waveguide device 20 for reception by the optoelectronic device 5, thereby providing the optoelectronic device 5 with light of required power (as described below). Figure 6 shown).

[0045] Reference Figure 2A Combined with Figure 1 to Figure 2 , Figure 2A for Figure 2 A partial enlarged schematic diagram of the optical coupling structure 100 is shown. Figure 1 and Figure 1A As shown, the light source device 10 includes a fixing plate 11, a strip substrate 12, and a light emitting unit 13. The fixing plate 11 is a rectangular printed circuit board, which includes a top surface 112, a bottom surface 113, and a docking surface 111 connecting the top surface 112 and the bottom surface 113. The strip substrate 12 is disposed on the fixing plate 11, and the light emitting unit 13 is disposed on the strip substrate 12. In some embodiments, as Figure 1A and Figure 2A As shown, the strip substrate 12 is located near the docking surface 111 of the fixing plate 11 , and includes a driving circuit 121 electrically connected to the light emitting unit 13 .

[0046] Reference Figure 3 and 4 , Figure 3 yes Figure 1 A top view of Figure 4 is along Figure 3 Schematic diagram of the cross section taken by the AA line segment. Figure 4 As shown, the light-emitting unit 13 includes a functional portion 1301 and a light-emitting portion 133. In the present embodiment, the light-emitting unit 13 is simultaneously fabricated on the strip substrate 12 by an LED forming process such as epitaxy. Specifically, the light-emitting unit 13 and the strip substrate 12 are fabricated by a thin film growth process, a photolithography process, a doping process, and an etching process. The light-emitting unit 13 is disposed on the strip substrate 12 after the film forming process and the like, and is divided into a plurality of light emitters 130 by an etching process, so that the plurality of light emitters 130 are spaced apart from each other and aligned with each other. Therefore, there is no need to perform LED chip sawing (i.e., cutting) and sorting processes. As shown in FIG. Figure 2A and Figure 4 As shown, the strip substrate 12 is configured to span across the bottom of each optical transmitter 130. The optical transmitter 130 is used to generate a baseband optical signal, which generally refers to converting electrical energy into optical energy.

[0047] Continue to refer to Figure 4, the functional portion 1301 of the light emitter 130 includes an N-type semiconductor structure 131 and a P-type semiconductor structure 132. The light emitting portion 133 is made of a semiconductor material such as gallium arsenide (GaAs) and is located between the N-type semiconductor structure 131 and the P-type semiconductor structure 132. Each light emitter 130 also includes a plurality of electrodes 14, each electrode 14 includes a cathode 142 and an anode 141 formed on the N-type semiconductor structure 131 and the P-type semiconductor structure 132, respectively. In some embodiments, the light emitter 130 is a laser emitter, such as a gallium arsenide (GaAs) laser diode, a gallium nitride (GaN) laser diode, or an indium gallium arsenide phosphide (InGaAsP) laser diode, but is not limited thereto.

[0048] In some embodiments, it is necessary to first epitaxially grow the light emitter 130, that is, grow an N-type semiconductor 131, a P-type semiconductor 132, and a light-emitting portion 133 on the strip substrate 12. Take a gallium nitride laser diode as an example. The GaN laser diode is grown on a sapphire substrate. The growth method can be metal organic chemical vapor deposition (MOCVD). Specifically, multiple light emitters 130 are simultaneously fabricated on the strip substrate 12. In detail, as Figure 4 As shown in FIG. 1 , after all layers including the plurality of light emitters 130 are sequentially formed on the surface of the strip substrate 12 as a whole, an etching process is performed to separate each layer except the sapphire substrate into a plurality of light emitters 130. Then, a portion of the surface of the P-type semiconductor 132 of each light emitter 130 is removed by dry etching to expose the N-type semiconductor structure 131 below, and an electrode 14 (as well as a substrate 131) is disposed on the P-type semiconductor 132 and the N-type semiconductor 131. Figure 1A The driving circuit 121 on the strip substrate 12 is shown to make current flow through the light emitter 130 to emit light. It should be noted that the method of manufacturing the light emitter 130 is not limited thereto.

[0049] In some embodiments, the light emitter 130 of the present application can be an edge-emitting laser diode, a surface-emitting laser diode, or a vertical cavity surface-emitting laser (VCSEL) diode. Specifically, the working mode of the edge-emitting laser diode is that the epitaxial surface is in the horizontal direction, and the laser resonates back and forth in the horizontal direction (within the epitaxial surface) and is emitted from the side. The working mode of the surface-emitting laser diode is that the epitaxial surface and the metal reflective film are both in the vertical direction, and the laser resonates back and forth in the direction perpendicular to the epitaxial surface and is emitted from the epitaxial surface. The working principle of the VCSEL diode is that the laser is emitted from a direction perpendicular to the surface of the semiconductor substrate.

[0050] See also Figure 1AThe strip substrate 12 includes a driving circuit 121, which is coupled to the electrode 14 of each light emitter 130 to provide a driving voltage or a driving current to the light emitter 130, and to provide the required power to the light emitter 130. In some embodiments, the strip substrate 12 has the characteristics of high temperature resistance, corrosion resistance, high hardness, and high melting point. Preferably, according to the type of the light emitter 130, the strip substrate 12 is a sapphire substrate or a gallium arsenide (GaAs) substrate.

[0051] like Figure 1A As shown, the driving circuit 121 is configured along the light emitters 130. In some embodiments, the driving circuit 121 can output a driving voltage to a certain number of light emitters 130 to emit a laser with a first predetermined power. In other embodiments, the driving circuit 121 can output another driving voltage to the remaining light emitters 130 to emit a laser beam with a second predetermined power greater than the first predetermined power. Preferably, all light emitters 130 output a laser beam of the first predetermined power or the second predetermined power according to the purpose under the control of the driving voltage. Preferably, the light source device 10 is configured to generate high-power narrowband light with an intensity exceeding 500 microwatts (mW) according to the application.

[0052] like Figure 1 and Figure 2 As shown, the waveguide device 20 is made of a material such as silicon dioxide, silicon carbide (SiC), or silicon nitride (SiN), and includes a waveguide substrate 21, a plurality of optical waveguide channels 22 formed on the waveguide substrate 21, and a guide surface 211 located at the front end of the waveguide substrate 21. In some embodiments, the optical waveguide channels 22 are groove-shaped and are arranged in an array along the top surface of the waveguide substrate 21 to extend to the guide surface 211, so as to propagate the light beam from the light source device 10 to the optical fiber assembly 30.

[0053] In some embodiments, the waveguide device 20 is a planar light waveguide (PLC), and its structure forms are various, including but not limited to a straight optical path, an optical splitter, an arrayed waveguide grating wavelength multiplexer, a cross-connection type optical path, etc. The planar light waveguide in the embodiments of the present application can adopt different types of waveguide optical paths or devices.

[0054] like Figure 1A and Figure 2As shown, in some embodiments, the number of optical waveguide channels 22 is equal to the number of light emitters 130. The pattern on the mask used to etch the layers to form multiple units of the light emitters 130 is designed to match the optical waveguide channels 22 of the waveguide device 20. Specifically, the spacing between the optical waveguide channels 22 is the same as the spacing between adjacent light emitters 130. When assembling the waveguide device 20 and the light source device 10, since the light emitters 130 are integrally formed on a single strip substrate 12 at the same time, and the light emitters 130 and the optical waveguide channels 22 are patterned via a mask with a matching pattern, all the light emitters 130 can be quickly aligned with the optical waveguide channels 22 at the same time by lighting up all the light emitters 130 and detecting the light intensity of the multiple optical fibers 32 contained in the optical fiber assembly 30. In some embodiments, as shown in FIG. Figures 1 to 2A As shown, the strip substrate 12 provided with the light emitter 130 is disposed near the docking surface 111 and the top surface 112 of the fixing plate 11. In other embodiments, the strip substrate 12 provided with the light emitter 130 may be disposed approximately in the middle between the top surface 112 and the bottom surface 113 or near the bottom surface 113.

[0055] like Figure 1 , Figure 2 As shown, the optical fiber assembly 30 includes a support seat 31, a cover body 33 detachably mounted on the support seat 31, and a plurality of optical fibers 32. A portion of each optical fiber 32 is located at the support seat 31, and one end of the optical fiber 32 terminates at the edge of the support seat 31 close to the waveguide device 20. The optical fiber 32 can be, for example, a single-mode optical fiber, a multi-mode optical fiber, or a polarization-maintaining (PM) optical fiber, and can be arranged in parallel in a single row or multiple rows on the support seat 31. In the present embodiment, the optical fiber 32 is a single-mode optical fiber, and a plurality of V-grooves 311 are provided on the support seat 31 for fixing the optical fiber 32. The size and shape of the cover body 33 are suitable for protecting the optical fiber 32 on the support seat 31. The support seat 31 is attached to the waveguide device 20 so that the optical fibers 32 are aligned with the optical waveguide channels 22, respectively. Preferably, the support seat 31 is fixed to the waveguide device 20 by gluing or curing a substance.

[0056] See also Figure 5A , Figure 5A 1 is a cross-sectional schematic diagram of an optical coupling structure 100A of an embodiment of the present application. In this embodiment, the light emitter 130' emits a laser beam in an upward direction perpendicular to the strip substrate 12, and the waveguide device 20' further includes a reflective wall 23 coated with a reflective material. Specifically, the reflective wall 23 is located above the light emitting portion 133 of the light emitter 130, so that light (i.e., the laser beam) is irradiated upward from each light emitting portion 133 to the reflective wall 23 of the waveguide device 20, and is reflected by the reflective wall 23 to the direction of the corresponding optical waveguide channel 22. In some embodiments, as Figure 5A As shown, the support base 31 can extend forward to support the waveguide device 20'.

[0057] See also Figure 5B , Figure 5B 1 is a cross-sectional schematic diagram of an optical coupling structure 100B of an embodiment of the present application. In this embodiment, the light emitter 130' also emits a laser beam in an upward direction perpendicular to the strip substrate 12. Specifically, each light emitter 130' also includes a reflection bar 134 located above the entire light emitting portion 133. The reflection bar 134 and the light emitter 130' are arranged on the strip substrate. During operation, light is irradiated from the light emitting portion 133 to the reflection bar 134, and is reflected by the reflection bar 134 to the direction of the optical waveguide channel 22 of the waveguide device 20.

[0058] See also Figure 5C , Figure 5C 1 is a cross-sectional schematic diagram of an optical coupling structure 100C according to an embodiment of the present application. In this embodiment, the optical emitter 130" can emit a laser beam upward in a direction perpendicular or parallel to the strip substrate 12". Different from the optical coupling structure described in the previous embodiment, the strip substrate 12" is rotated to be inserted into the slot portion 114 of the fixing plate 11, so that the optical emitter 130" is rotated 90 degrees to abut against the fixing plate 11, and emits light that propagates straight forward to the optical waveguide channel 22 of the waveguide device 20.

[0059] The light emitter 130 provided in the present application can be a surface emitting laser or an edge emitting laser, preferably a surface emitting laser. The light emitter 130 described in the above embodiment is configured to generate a laser beam whose light field shape remains a perfect circle or has a desired shape according to the design of the optical fiber 32. Since the light emitter 130 can emit a light beam that maintains a desired shape and propagates in a straight direction toward the optical waveguide channel 22, the energy loss of the light emitted by the light emitter 130 is significantly reduced when connected to the optical fiber 32.

[0060] See also Figure 6 , Figure 6 An optoelectronic system 7 is shown, in which the optical coupling structure 100 according to an embodiment of the present application is applicable to an optoelectronic device 5. In some embodiments, the optoelectronic device 5 is disposed on a frame plate 6, and the optoelectronic device 5 includes a main circuit board 51, a carrier board 52 electrically mounted on the main circuit board 51, at least one processor 53 is disposed on the carrier board 52, and a plurality of detachable optical transceiver modules 54 are disposed around the main circuit board 51. In some embodiments, the processor 53 may be an application-specific integrated circuit (ASIC), and the carrier board 52 may be a multi-chip module (MCM), which serves as a substrate for multiple chips and performs various electrical and optical functions. In some embodiments, the optoelectronic device 5 may be specifically implemented as a CPO switch, but is not limited thereto. Figure 6As shown, four optical transceiver modules 54 are disposed on each side of the main circuit board 51. Alternatively, eight optical transceiver modules 54 may be disposed on each side of the main circuit board 51. The number of optical transceiver modules 54 is determined according to actual applications.

[0061] When assembling, refer to Figures 1 to 2A and Figure 6 , the optical coupling structure 100 is disposed on the frame plate 6 and connected to each optical transceiver module 54 through the optical fiber assembly 30. Specifically, the waveguide device 20 is attached to the light source device 10 in the following manner: the optical transmitter 130 is optically aligned with the optical waveguide channel 22 of the waveguide device 20, and the butt surface 111 of the fixing plate 11 directly faces the guide surface 211 of the waveguide device 20. Figure 1A and Figure 3 As shown, the guiding surface 211 is configured to face the butting surface 111, so that the light emitters 130 are respectively aligned with the optical waveguide channels 22, and a hollow space is reserved between the light emitters 130 and the optical waveguide channels 22. Specifically, no optical lens, wave zone plate, etc. for propagating or guiding the light beam is arranged between the butting surface 111 and the guiding surface 211.

[0062] In some embodiments, the optical coupling structure 100 can be disposed on a housing (not shown) and optically connected to the optical transceiver module 54 through an interconnector (not shown) between the optical fiber 32 and the optical transceiver module 54. In other embodiments, the light source device 10 is fixedly disposed on the frame plate 6, and the waveguide device 20 together with the optical fiber assembly 30 are detachably connected to the light source device 10, while ensuring precise optical alignment between the waveguide device 20 and the light source device 10.

[0063] With the optical coupling structure 100 of the present application, it is not necessary to align each optical transmitter 130 with the corresponding optical waveguide channel 22 individually. More specifically, it is only necessary to actively align the first and last optical transmitters 130 in the row provided with the optical transmitters 130 with the corresponding optical waveguide channel 22 (a one-time active alignment process). In addition, each optical transmitter 130 emits a laser beam straight through the corresponding optical waveguide channel 22 to the corresponding optical fiber 32.

[0064] Reference Fig. 7A and 7B In some embodiments, the optical transceiver module 54 includes a detachable optical coupling structure 100', which includes a first connector 42 and a second connector 43. The second connector 43 is detachably connected to the first connector 42, so that the second connector 43 can be easily replaced. Fig. 7A and Figure 7BAs shown, the first connector 42 includes a base 420 and a waveguide component 421. The base 420 includes a lower surface 420B, an upper surface 420T, and a front end 420F connected between the lower surface 420B and the upper surface 420T. In some embodiments, a cutout portion 422 is formed on the base 420, and the cutout portion 422 is recessed in the front end 420F, and the waveguide component 421 is disposed in the cutout portion 422. In detail, the cutout portion 422 is configured to pass through the lower surface 420B, the upper surface 420T, and the front end 420F of the base 420.

[0065] In some embodiments, Figure 7B As shown, a plurality of positioning members 423 are symmetrically arranged on the front end 420F of the base 420 relative to the middle of the base 420, and are spaced apart from each other on the opposite sides of the cutout portion 422 and the waveguide assembly 421. The retaining wall 424 is formed on the base 420 and extends downwardly from the lower surface 420B in a curved manner, so that the base 420 has an inverted L-shaped cross-sectional profile. In the present embodiment, the number of the positioning members 423 is two, and the shape of the positioning members 423 is pin-shaped, and they extend outward from the front end 420F on the retaining wall 424, respectively. In some embodiments, the base 420 is made of a material having high temperature resistance, such as ceramic or metal, such as zirconium dioxide (ZrO2). Alternatively, the base 420 can be made of a non-metallic material, such as an organic adhesive (e.g., resin), a polymer, or a plastic.

[0066] Preferably, the waveguide component 421 is made of a material containing silicon dioxide, for example. Alternatively, the waveguide component 421 may be made of a material including lithium niobate (LiNbO3) or a polymer or have a structure of silicon on insulator (SOI). In some embodiments, the waveguide component 421 may be formed of materials such as fused quartz, quartz, glass, borosilicate glass, etc. It should be noted that the waveguide component 421 includes a planar light waveguide (PLC). In some embodiments, the planar light waveguide may be configured in a variety of ways, including but not limited to a straight light path, an optical splitter, an arrayed waveguide grating wavelength multiplexer, and a cross-connection type light path. The planar light waveguide in the embodiments of the present application may use a variety of types of waveguide light paths or devices.

[0067] Continue to refer to FIG. 7A to FIG. 7B In some embodiments, the second connector 43 includes an optical fiber 431 (which is connected to the end of the optical fiber 32 away from the light source device 10, such as Figure 2 or may extend integrally from the optical fiber 32) and configured to be detachably connected to a docking member 432 of the first connector 42. The optical fiber 431 has a plurality of optical fiber ends 433 (such as Fig. 7AIn this embodiment, the docking member 432 functions as a multi-channel optical connector, which includes a connection surface 434 disposed toward the front end 420F of the base 420, and a plurality of pin-shaped positioning members 423 (such as Figure 7B As shown) a corresponding groove (not shown) is provided. Fig. 7A As shown, the second connector 43 is inserted into the first connector 42. Figure 7B As shown, the second connector 43 can be removed from the base 420 of the first connector 42.

[0068] In this configuration, if Fig. 7A As shown, the fiber end 433 of the optical fiber 431 is positioned to directly face the cutout portion 422 at the front end 420F of the base 420, so that the optical fiber 431 and the waveguide component 421 are transmitted signals in a surface coupling manner. It should be noted that the signal transmission between the optical fiber 431 and the waveguide component 421 is not limited to the above-mentioned surface coupling, and the optical coupling can be in various forms.

[0069] In the embodiment of the present application, the light source device of the optical coupling structure serves as an external light source (ELS) of the optoelectronic device, replacing the traditional individually integrated light source elements, realizing optical coupling with multiple optical paths at one time, and avoiding the problems of high manufacturing cost and poor assembly efficiency caused by the traditional multiple light source elements each having to go through the complex and time-consuming optical alignment and coupling process of the lens assembly between the light source element and the optical fiber.

[0070] An embodiment of the present application provides an optical coupling structure suitable for an optoelectronic device, the optical coupling structure comprising a light source device, the light source device comprising a fixed plate, a strip substrate located on the fixed plate, and a light emitting unit located on the strip substrate. The light emitting unit comprises a functional portion and a light emitting portion, the functional portion and the light emitting portion are divided into a plurality of light emitters, and the strip substrate is configured to span the bottom of each light emitter. A waveguide device is disposed adjacent to the mating surface of the fixed plate and the light emitter of the light source device to transmit an optical signal from the light emitter. An optical fiber assembly is connected to the waveguide device.

[0071] In one embodiment of the present application, the optoelectronic system further includes a frame plate for supporting the optoelectronic device and the optical coupling structure.

[0072] In one embodiment of the present application, the optical fiber assembly includes a support seat, a portion of the optical fiber is located on the support seat, and the other end of each optical fiber terminates at an edge of the support seat close to the waveguide device.

[0073] Another aspect of the present invention provides a light source device suitable for use with an optoelectronic device, the light source device comprising a fixing plate; a strip substrate located on the fixing plate; and a light emitting unit located on the strip substrate, the light emitting unit comprising a functional portion, a light emitting portion, and a plurality of electrodes electrically connecting the light emitting unit and the strip substrate. The functional portion and the light emitting portion are divided into a plurality of light emitters, each light emitter being provided with an electrode.

[0074] The above embodiments are used to illustrate the technical ideas of the present disclosure, but not to limit the technical ideas of the present disclosure. Therefore, the scope of rights of the present disclosure is not limited to the embodiments. The protection scope of the present disclosure shall be interpreted by the claims, and shall be interpreted as all technical ideas that are the same or equivalent to the above protection scope are included in the scope of rights of the present disclosure.

Claims

1. An optical coupling structure, suitable for an optoelectronic device, characterized in that: The optical coupling structure comprises: A light source device, comprising a fixing plate, a strip substrate disposed on the fixing plate, and a light emitting unit disposed on the strip substrate, wherein the light emitting unit comprises a functional portion and a light emitting portion, the functional portion and the light emitting portion are divided into a plurality of light emitters, and the strip substrate is configured to span across the bottom of each light emitter; a waveguide device disposed adjacent to the butting surface of the fixing plate and the light emitter of the light source device to transmit an optical signal from the light emitter; and An optical fiber assembly is connected to a waveguide device.

2. The optical coupling structure according to claim 1, characterized in that: The light emitters are spaced apart from each other and aligned in an array.

3. The optical coupling structure according to claim 1, characterized in that: The strip substrate includes a driving circuit coupled to each of the light emitters, and the driving circuit is configured to provide a driving voltage to the light emitters.

4. The optical coupling structure of claim 1, wherein the optical emitters are laser emitters, and each optical emitter is optically coupled to the waveguide device simultaneously through a one-time active alignment process.

5. The optical coupling structure according to claim 2, characterized in that: The waveguide device includes a plurality of optical waveguide channels, the plurality of optical waveguide channels are spaced apart from each other at a pitch, and the pitch is the same as a pitch between adjacent optical emitters.

6. The optical coupling structure according to claim 5, characterized in that: The strip-shaped substrate is arranged close to the butt joint surface of the fixing plate, and the light emitters respectively emit light beams in a straight line direction toward the optical waveguide channel.

7. The optical coupling structure according to claim 5, characterized in that: The waveguide device includes a guide surface, which is located at the front end of the waveguide device, the optical waveguide channel extends to the guide surface, and the guide surface is arranged to face and be close to the fixing plate, so that the light emitter is aligned with the optical waveguide channel, and a hollow space is reserved between the light emitter and the optical waveguide channel.

8. The optical coupling structure according to claim 1, characterized in that: The optical fiber assembly comprises a supporting base and a plurality of optical fibers, a portion of the optical fibers is located at the supporting base, and one end of each optical fiber is terminated at an edge of the supporting base close to the waveguide device.

9. A light source device, suitable for use with a photoelectric device, comprising: Fixed plate; A strip-shaped substrate, arranged on the fixed plate; as well as The light-emitting unit is arranged on the strip substrate and includes a functional part, a light-emitting part and a plurality of electrodes, wherein the plurality of electrodes provide electrical connection between the light-emitting unit and the strip substrate, wherein the functional part and the light-emitting part are divided into a plurality of light emitters, and the plurality of electrodes are respectively arranged on the plurality of light emitters.

10. The light source device according to claim 9, characterized in that: The functional portion includes an N-type semiconductor structure and a P-type semiconductor structure, and the light emitting portion is disposed between the N-type semiconductor structure and the P-type semiconductor structure.

11. The light source device according to claim 10, characterized in that: The strip substrate includes a driving circuit coupled to each of the light emitters for providing a driving voltage to the light emitters.

12. The light source device according to claim 10, characterized in that: A waveguide device and an optical fiber assembly are provided to be optically coupled to the light source device, and the light emitters are spaced apart from each other and aligned in an array.

13. The light source device according to claim 12, characterized in that: The optical emitters are laser emitters, and each of the optical emitters is optically coupled to the waveguide device simultaneously through a one-time active alignment process.

14. The light source device according to claim 13, characterized in that: The waveguide device includes a plurality of optical waveguide channels, the plurality of optical waveguide channels are spaced apart from each other at a pitch, and the pitch is the same as a pitch between adjacent optical emitters.

15. The light source device according to claim 14, characterized in that: The waveguide device includes a guide surface, which is located at the front end of the waveguide device, the optical waveguide channel extends to the guide surface, and the guide surface is arranged to face and be close to the fixing plate, so that the light emitter is aligned with the optical waveguide channel, and a hollow space is reserved between the light emitter and the optical waveguide channel.

16. The light source device according to claim 11, characterized in that: A frame plate is provided for supporting the optoelectronic device. The light source device is mounted on the frame plate. The frame plate, the optoelectronic device and the light source device together constitute an optoelectronic system.

17. An optoelectronic system comprising: An optical coupling structure, comprising: A light source device, comprising: a fixing plate; a strip substrate located on the fixing plate; and a light emitting unit located on the strip substrate, the light emitting unit comprising a functional portion and a light emitting portion, wherein the functional portion and the light emitting portion are divided into a plurality of light emitters; a waveguide device, disposed adjacent to the fixing plate and the light emitter of the light source device, for transmitting an optical signal from the light emitter; and an optical fiber assembly including a plurality of optical fibers and connected to the waveguide device; and An optoelectronic device comprises a main circuit board and a plurality of detachable optical transceiver modules arranged at the peripheral portion of the main circuit board, wherein each of the detachable optical transceiver modules comprises: The first connector is arranged on the main circuit board and includes: a base; and a waveguide assembly disposed within the base; and A second connector is disposed at one end of each optical fiber, wherein the second connector is detachably connected to the first connector.

18. The photovoltaic system according to claim 17, characterized in that: The optical emitters are laser emitters, and each of the optical emitters is optically coupled to the waveguide device simultaneously through a one-time active alignment process.

19. The optoelectronic system according to claim 17, further comprising a frame plate for supporting the optoelectronic device and the optical coupling structure.

20. The photovoltaic system according to claim 17, characterized in that: The optical fiber assembly comprises a support base, a portion of the optical fiber is located on the support base, and the other end of each optical fiber is terminated at an edge of the support base close to the waveguide device.

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