CN109738997A - Optical module - Google Patents
Optical module Download PDFInfo
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- CN109738997A CN109738997A CN201910210577.8A CN201910210577A CN109738997A CN 109738997 A CN109738997 A CN 109738997A CN 201910210577 A CN201910210577 A CN 201910210577A CN 109738997 A CN109738997 A CN 109738997A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 261
- 239000013307 optical fiber Substances 0.000 claims abstract description 25
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The present invention provides a kind of optical modules, the optical module include optical assembly, Interleave muiltiplexing component element, the connection optical assembly with the optical fiber of the Interleave muiltiplexing component element, connect the optical module circuit board of the optical assembly and carries the fixation device of the optical assembly and the Interleave muiltiplexing component element, wherein the fixed device includes: the optical assembly fixing seat for carrying the optical assembly and the Interleave muiltiplexing component element fixing seat for carrying the Interleave muiltiplexing component element.The optical assembly fixing seat can be by the optical assembly fixed and arranged in the limited space of the optical module, and optical assembly is enable independently to replace, while solving the problems, such as that optical fiber cabling is difficult in the optical module inside.
Description
Technical Field
The invention relates to the technical field of optical communication networks, in particular to an optical module.
Background
The optical module is composed of an optoelectronic device, a functional circuit, an optical interface and the like, wherein the optoelectronic device comprises a transmitting device and a receiving device. The optical module has the function of photoelectric conversion, the transmitting device converts an electric signal into an optical signal, and the receiving device converts the optical signal into the electric signal after the optical signal is transmitted through the optical fiber. The optical modules are classified according to the packaging Form, and Small Form-Factor Pluggable (SFP), Small Form Factor (SFF), gigabit ethernet interface converter (GBIC), and the like are common.
In particular, QSFP/QSFP28(Quad Small Form-factor plug) is a Quad channel interface, QSFP/QSFP28 was created to meet the market demand for higher density, high speed Pluggable solutions. The four-channel pluggable interface transmission rate reaches 40/100 Gbps. Many mature key technologies are applied to this design.
In the prior art, as to a transmitting end, i.e. a transmitting device, in a four-way wavelength division multiplexing optical module of QSFP or QSFP28, the following methods are generally adopted: 1. the use of four internally integrated wavelength division multiplexed hermetic or non-hermetic optical components as the transmitting end has the disadvantages of high packaging cost, and high maintenance cost because only the entire optical component can be replaced if one optical component has poor signal transmission. 2. The four-path coaxial non-airtight packaged optical assembly is used as the transmitting end, and the method has the defects that the transmitting end cannot achieve an airtight effect, the coaxial non-airtight packaged optical assembly needs to be packaged, the complicated Chip On Board (COB) work is still needed in the assembly of the optical module, and the fixed asset investment is large. 3. The four-path coaxial airtight packaged optical assembly is used as a transmitting end, but the four-path coaxial airtight packaged optical assembly is arranged, so that the four-path coaxial airtight packaged optical assembly cannot adopt a larger TO38 shape, the packaging cost is high, the internal space of the optical module cannot be well utilized, and the circuit board design and the heat dissipation effect of the optical module are influenced.
Disclosure of Invention
The invention aims to provide an optical module to solve the problem that the internal space of the optical module cannot be well utilized in the prior art.
In order to solve the above technical problem, the present invention provides an optical module, where the optical module includes an optical component, a wavelength division multiplexing component, an optical fiber connecting the optical component and the wavelength division multiplexing component, an optical module circuit board connecting the wavelength division multiplexing component, and a fixing device for bearing the optical component and the wavelength division multiplexing component, where the fixing device includes: an optical component holder for holding the optical component and a wavelength division multiplexing component holder for holding the wavelength division multiplexing component.
Optionally, in the optical module, the optical module fixing base is a rectangular parallelepiped, a plurality of U-shaped grooves are formed in the optical module fixing base, and the plurality of U-shaped grooves are distributed in a staggered manner in the vertical direction and/or the horizontal direction and can bear the optical module.
Optionally, in the optical module, two grooves are formed in the optical module fixing seat, and are respectively located on two opposite side walls of the optical module fixing seat, and two ends of each groove are respectively provided with a limiting portion.
Optionally, in the optical module, the wavelength division multiplexing component fixing base is plate-shaped, and a first limiting device is disposed on one side or multiple sides of the wavelength division multiplexing component fixing base, where the first limiting device includes three first limiting points, and the three first limiting points are blocks distributed in a U shape.
Optionally, in the optical module, the wavelength division multiplexing component fixing base is further provided with a second limiting device, the second limiting device includes two second limiting points, and the two second limiting points are plates which are distributed in parallel and perpendicular to the wavelength division multiplexing component.
Optionally, in the optical module, the fixing device further includes a flexible circuit board, an input end of the flexible circuit board is connected to the optical module, an output end of the flexible circuit board is connected to the optical module circuit board, and the flexible circuit board can transmit an electrical signal between the optical module and the optical module circuit board.
Optionally, in the optical module, the fixing device further includes a cover plate and a base, where the base includes a bottom plate and a traction component, the traction component is connected to the bottom plate, the cover plate is connected to the bottom plate through a screw device and forms an accommodation space, and the optical assembly, the wavelength division multiplexing assembly, the optical module circuit board, the optical assembly fixing seat, and the wavelength division multiplexing assembly fixing seat are all located in the accommodation space.
Optionally, in the optical module, a single or multiple positioning devices are disposed in the accommodating space, and the positioning devices can position the optical component, the wavelength division multiplexing component, the optical module circuit board, the optical component fixing base, and/or the wavelength division multiplexing component fixing base.
Optionally, in the optical module, side plates perpendicular to the bottom plate are disposed on two sides of the bottom plate, and a protective film is disposed on a surface of each side plate facing the accommodating space.
Optionally, in the optical module, the optical assembly includes four mutually independent coaxial hermetically-packaged optical assembly elements, the optical assembly serves as a transmitting end of the optical module, and the optical assembly is capable of transmitting an optical signal; and the optical signal is multiplexed to the optical port of the transmitting end through the wavelength division multiplexing component.
Optionally, in the optical module, the wavelength division multiplexing component includes five ferrules, where four of the ferrules are ferrules, and the ferrules are connected to the four optical components respectively; the other insertion core is connected to the optical port of the transmitting end.
Optionally, in the optical module, the connection mode between the ferrule and the optical module is adhesive connection or snap connection.
In the optical module provided by the present invention, the optical module includes an optical module, a wavelength division multiplexing module, an optical fiber connecting the optical module and the wavelength division multiplexing module, an optical module circuit board connecting the optical module, and a fixing device for bearing the optical module and the wavelength division multiplexing module, wherein the fixing device includes: an optical component holder for holding the optical component and a wavelength division multiplexing component holder for holding the wavelength division multiplexing component. The optical component fixing seat can fix and arrange the optical component in the limited space of the optical module, so that the internal space of the optical module can be well utilized, and the design and the heat dissipation effect of a circuit board of the optical module can be improved. Furthermore, the optical module can be independently replaced, and the problem of difficulty in routing optical fibers in the interior of the optical module is solved.
Drawings
Fig. 1 is a schematic structural diagram of an optical module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an optical module fixing base of an optical module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a wdm assembly fixing base of an optical module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a flexible circuit board of an optical module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a cover plate and a base of an optical module according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a ferrule of an optical module according to an embodiment of the present invention;
wherein,
100-an optical module; 110-an optical component; 120-wavelength division multiplexing components; 121-ferrule; 122-another ferrule; 130-an optical fiber; 140-optical module circuit board; 150-a fixture; 151-optical component mount; 152-wavelength division multiplexing component fixing seat; 153-grooves; 154-a limiting part; 155-a first stop; 156-second stop means; 160-flexible circuit board; 170-cover plate; 180-a base; 181-a bottom plate; 182-a traction member; 190-screw device.
Detailed Description
The core idea of the invention is to provide an optical module, which can well utilize the internal space of the optical module, thereby improving the circuit board design and the heat dissipation effect of the optical module. Furthermore, the optical module can be independently replaced, and the problem of difficulty in routing optical fibers in the interior of the optical module is solved.
In order to achieve the above idea, the present invention provides an optical module, where the optical module includes an optical component, a wavelength division multiplexing component, an optical fiber connecting the optical component and the wavelength division multiplexing component, an optical module circuit board connecting the wavelength division multiplexing component, and a fixing device for bearing the optical component and the wavelength division multiplexing component, where the fixing device includes: an optical component holder for holding the optical component and a wavelength division multiplexing component holder for holding the wavelength division multiplexing component.
To make the objects, advantages and features of the present invention more apparent, the optical module of the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.
First, referring to fig. 1, fig. 1 is a schematic structural diagram of an optical module according to an embodiment of the present invention. In an optical module 100 provided in this embodiment, the optical module 100 includes an optical component 110, a wavelength division multiplexing component 120, an optical fiber 130 connecting the optical component 110 and the wavelength division multiplexing component 120, an optical module circuit board 140 connecting the wavelength division multiplexing component 120, and a fixing device 150 carrying the optical component 110 and the wavelength division multiplexing component 120, where the fixing device 150 includes: an optical component holder 151 carrying said optical component 110 and a wavelength division multiplexing component holder 152 carrying said wavelength division multiplexing component 120. Accordingly, the optical module fixing base 151 can fix and arrange the optical module 110 in a limited space of the optical module 100, thereby making good use of an inner space of the optical module 100, and improving a circuit board design and a heat dissipation effect of the optical module 100. Further, the optical module 110 can be replaced independently, and the problem of difficulty in routing optical fibers inside the optical module 100 is solved. In the embodiment of the present application, the optical module 110 is composed of four independent coaxial hermetically-sealed optical subassembly elements with the size of TO38 or less, and the optical module 110 can be replaced independently, and the problem of difficulty in routing the optical fiber 130 inside the optical module 100 is solved.
Preferably, the optical module fixing base 151 is rectangular, the optical module fixing base 150 is provided with a plurality of U-shaped grooves, and the plurality of U-shaped grooves are distributed along the vertical direction and/or the horizontal direction in a staggered manner and can carry the optical module 110. Thus, the optical assembly 110, which is composed of four independent coaxial hermetically sealed optical components of TO38 and below, is enabled TO fix relative positions. As shown in fig. 2, fig. 2 is a schematic structural diagram of an optical module fixing base of an optical module according to an embodiment of the present invention, four optical module elements are fixed into two upper and lower rows, wherein the openings of the upper row of U-shaped slots are upward, and the openings of the lower row of U-shaped slots are downward. Meanwhile, the distribution mode of dislocation along the vertical direction and/or the horizontal direction more fully utilizes the space, the optical assemblies 110 are fixedly arranged in the narrow space, and the influence that the four optical assemblies deviate from the original positions and even are damaged in the use process is avoided. Preferably, the optical component fixing base 151 is made of plastic or metal.
Referring to fig. 2, preferably, two grooves 153 are formed in the optical component fixing base 151, and are respectively located on two opposite sidewalls of the optical component fixing base 151, and two ends of the groove 153 are respectively provided with a limiting portion 154. Therefore, the optical fiber 130 connecting the optical component 110 and the wavelength division multiplexing component 120 is relatively fixed and placed on two sides of the optical component fixing seat 151, two limiting parts 154 are arranged at two ends of the groove 153 on each side, the limiting parts 154 limit the movable range of the optical fiber 130, and the optical fiber 130 can be slightly adjusted according to actual needs to adapt to practical application. Meanwhile, since the optical fibers 130 are long and many, the grooves 153 provide accommodating spaces for the optical fibers 130, thereby solving the problem of difficulty in routing the optical fibers 130 and saving space.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a wdm assembly fixing base of an optical module according to an embodiment of the present invention. In this embodiment, the wdm assembly fixing base 152 is shaped like a plate, and a first position-limiting device 155 is disposed on one or more sides of the wdm assembly fixing base 152. Therefore, the wavelength division multiplexing module 120 is fixedly mounted on the wavelength division multiplexing module fixing base 152, and the relative position of the wavelength division multiplexing module 120 and the optical module 110 is ensured. Preferably, the first position limiting device 155 includes three first position limiting points, and the three first position limiting points are blocks distributed in a U shape. The distances between the three first limit points are adapted to the wavelength division multiplexing component 120 in a rectangular shape, so that the wavelength division multiplexing component 120 can be fixed in three directions, and the influence of vibration on the function of the wavelength division multiplexing component 120 in the use process of the optical module 100 is greatly avoided. It is understood that the first position-limiting device 155 may be distributed in other manners, such as four right-angled blocks corresponding to the four corners of the wavelength division multiplexing component 120, as long as the wavelength division multiplexing component 120 is limited, and the distribution of the first position-limiting device 155 is not limited in this embodiment.
Preferably, the wdm assembly holder 152 is further provided with a second position-limiting device 156, and thus the second position-limiting device 156 enables the optical fibers 130 connecting the optical assembly 110 and the wdm assembly 120 to be arranged on the wdm assembly holder 152 in order. Preferably, the second position limiting device 156 includes two second position limiting points, and the two second position limiting points are plates which are distributed in parallel and perpendicular to the wavelength division multiplexing component 120. Therefore, the optical fibers 130 are orderly arranged in a narrow space, so that the space is saved, and the influence of difficulty in maintenance and the like caused by disordered routing is avoided.
In this embodiment, the fixing device 150 further includes a flexible circuit board 160, an input end of the flexible circuit board 160 is connected to the optical module 110, an output end of the flexible circuit board 160 is connected to the optical module circuit board 140, and the flexible circuit board 160 can transmit an electrical signal between the optical module 110 and the optical module circuit board 140. Therefore, the optical module 110 serves as a transmitting terminal of the optical module 100 to transmit an electrical signal to the optical module circuit board 140, which is beneficial to completing a subsequent procedure of the optical module 100.
Preferably, the fixing device 150 further includes a cover plate 170 and a base 180, wherein the base 180 includes a bottom plate 181 and a pulling member 182, the pulling member 182 is connected to the bottom plate 181, the cover plate 170 is connected to the bottom plate 181 through a screw device 190 to form an accommodating space, and the optical assembly 110, the wavelength division multiplexing assembly 120, the optical module circuit board 140, the optical assembly fixing base 151 and the wavelength division multiplexing assembly fixing base 152 are all located in the accommodating space. Therefore, the cover plate 170 and the bottom plate 181 of the base 180 are adaptively mounted in a matching manner, and a formed accommodating space can accommodate the optical component 110, the wavelength division multiplexing component 120, the optical module circuit board 140, the optical component fixing seat 151, and the wavelength division multiplexing component fixing seat 152, so that stability of each component of the optical module 100 in a use process is ensured, and the optical module 100 is prevented from being influenced by factors such as external force. The screw device 190 can more firmly fix the cover plate 170 and the bottom plate 181, and is convenient to disassemble, replace and maintain.
Preferably, a single or a plurality of positioning devices are disposed in the accommodating space, and the positioning devices can position the optical component 110, the wavelength division multiplexing component 120, the optical module circuit board 140, the optical component fixing base 151, and/or the wavelength division multiplexing component fixing base 152. Therefore, the positioning device fixedly mounts the optical component 110, the wavelength division multiplexing component 120, the optical module circuit board 140, the optical component fixing seat 151, and/or the wavelength division multiplexing component fixing seat 152 in the accommodating space, so as to maintain respective work of each component of the optical module 100 in the using process, and ensure good working stability of the optical module 100 without mutual influence.
Preferably, side plates perpendicular to the bottom plate 181 are arranged on two sides of the bottom plate 181, and a protective film is arranged on the surfaces of the side plates facing the accommodating space. Therefore, the optical fibers 130 are prevented from being damaged in the use process due to the long length and the large number, and the service life and the product yield of the optical module 100 are ensured.
Preferably, the optical assembly 110 includes four mutually independent coaxial hermetically-packaged optical group elements, the optical assembly 110 serves as a transmitting end of the optical module 100, and the optical assembly 110 can transmit optical signals; the optical signal is multiplexed to the optical port of the transmitting end by the wavelength division multiplexing component 120. Thus, the optical module 100 performs the operation purpose under the mutual cooperation of the optical module 110 and the wavelength division multiplexing module 120.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a ferrule of an optical module according to an embodiment of the present invention. The wavelength division multiplexing component 120 includes five ferrules, wherein four of the ferrules are ferrules 121, and the ferrules 121 are connected to four optical components respectively; another ferrule 122 is connected to the optical port of the launch end. The ferrule 121 and the optical assembly 110 are connected by an adhesive or a snap connection. Therefore, the wavelength division multiplexing module 120 completes the transmission of the optical-electrical signal through the ferrule 121 and another ferrule 122, so that the wavelength division multiplexing module 120 can complete the transmission better.
As described above, the optical module according to the present invention has the following advantages:
the optical module provided by the invention can well utilize the internal space of the optical module, so that the design and the heat dissipation effect of a circuit board of the optical module can be improved. Furthermore, the optical module can be independently replaced, and the problem of difficulty in routing optical fibers in the interior of the optical module is solved. For example, four independent coaxial hermetically-packaged optical modules of TO38 or below can be arranged in a narrow space TO serve as the transmitting end of the optical module, so that the problems of poor non-hermetic effect and high packaging cost in the prior art are solved. Meanwhile, the optical module can more effectively utilize the internal space of the optical module, and the heat dissipation effect of the optical module circuit board is improved.
Furthermore, the four independent coaxial airtight packaged optical components can be independently replaced, if one path of optical component has poor signal transmission, the prior art can only replace the whole optical component, the maintenance cost is high, and the use is inconvenient.
Furthermore, the fixing device in the optical module provides a special groove for the optical fiber connecting the optical component and the wavelength division multiplexing component, so that the optical fiber routing mode is more effective, the production efficiency is improved, and the production cost is saved.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (12)
1. An optical module, comprising an optical module, a wavelength division multiplexing module, an optical fiber connecting the optical module and the wavelength division multiplexing module, an optical module circuit board connecting the wavelength division multiplexing module, and a fixing device for supporting the optical module and the wavelength division multiplexing module, wherein the fixing device comprises: an optical component holder for holding the optical component and a wavelength division multiplexing component holder for holding the wavelength division multiplexing component.
2. The optical module according to claim 1, wherein the optical module holder is rectangular, and a plurality of U-shaped grooves are disposed on the optical module holder, and the U-shaped grooves are distributed in a staggered manner in a vertical direction and/or a horizontal direction and can carry the optical module.
3. The optical module according to claim 1, wherein the optical module holder has two recesses, the two recesses are respectively disposed on two opposite sidewalls of the optical module holder, and each of two ends of the recess has a position-limiting portion.
4. The optical module according to claim 1, wherein the wdm assembly fixing base has a plate shape, and a first position limiting device is disposed on one or more sides of the wdm assembly fixing base, and the first position limiting device includes three first position limiting points, and the three first position limiting points are U-shaped blocks.
5. The optical module according to claim 4, wherein the wdm assembly fixing base is further provided with a second limiting device, and the second limiting device comprises two second limiting points, and the two second limiting points are plates which are distributed in parallel and perpendicular to the wdm assembly.
6. The optical module of claim 1, wherein the fixture further comprises a flexible circuit board, an input end of the flexible circuit board is connected to the optical module and an output end of the flexible circuit board is connected to the optical module circuit board, and the flexible circuit board is capable of transmitting electrical signals between the optical module and the optical module circuit board.
7. The optical module according to claim 1, wherein the fixing device further comprises a cover plate and a base, wherein the base comprises a bottom plate and a pulling member, the pulling member is connected to the bottom plate, the cover plate is connected to the bottom plate via a screw device to form an accommodating space, and the optical module, the wavelength division multiplexing module, the optical module circuit board, the optical module fixing base and the wavelength division multiplexing module fixing base are all located in the accommodating space.
8. The optical module according to claim 7, wherein a single or a plurality of positioning devices are disposed in the accommodating space, and the positioning devices can position the optical module, the wavelength division multiplexing module, the optical module circuit board, the optical module fixing base and/or the wavelength division multiplexing module fixing base.
9. The optical module according to claim 8, wherein side plates perpendicular to the bottom plate are disposed on two sides of the bottom plate, and a protective film is disposed on a surface of the side plate facing the accommodating space.
10. The optical module of claim 1, wherein the optical subassembly comprises four mutually independent coaxial hermetically encapsulated optical subassembly elements, the optical subassembly serving as a transmitting end of the optical module, the optical subassembly being capable of transmitting an optical signal; and the optical signal is multiplexed to the optical port of the transmitting end through the wavelength division multiplexing component.
11. The optical module of claim 10, wherein the wavelength division multiplexing module comprises five ferrules, wherein four of the ferrules are ferrules, and the ferrules are connected to four of the optical modules respectively; the other insertion core is connected to the optical port of the transmitting end.
12. The optical module of claim 11, wherein the ferrule is attached to the optical subassembly by an adhesive or a snap-fit connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910210577.8A CN109738997A (en) | 2019-03-20 | 2019-03-20 | Optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910210577.8A CN109738997A (en) | 2019-03-20 | 2019-03-20 | Optical module |
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| CN109738997A true CN109738997A (en) | 2019-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910210577.8A Pending CN109738997A (en) | 2019-03-20 | 2019-03-20 | Optical module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114740576A (en) * | 2022-03-29 | 2022-07-12 | 武汉华工正源光子技术有限公司 | Base and optical module with limiting baffle |
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Application publication date: 20190510 |