CN116908974B - 800G multimode optical module - Google Patents
800G multimode optical module Download PDFInfo
- Publication number
- CN116908974B CN116908974B CN202311129413.5A CN202311129413A CN116908974B CN 116908974 B CN116908974 B CN 116908974B CN 202311129413 A CN202311129413 A CN 202311129413A CN 116908974 B CN116908974 B CN 116908974B
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- lens
- chip
- optical
- rear lens
- front lens
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- 230000003287 optical effect Effects 0.000 title claims abstract description 74
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 4
- 239000013307 optical fiber Substances 0.000 claims description 13
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000004904 shortening Methods 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000005457 optimization Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- G02B6/4274—Electrical aspects
- G02B6/428—Electrical aspects containing printed circuit boards [PCB]
- G02B6/4281—Electrical aspects containing printed circuit boards [PCB] the printed circuit boards being flexible
-
- 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
- G02B6/4285—Optical modules characterised by a connectorised pigtail
-
- 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
- G02B6/4296—Coupling light guides with opto-electronic elements coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention relates to an 800G multimode optical module, comprising: a PCBA board, a DSP chip arranged on the PCBA board, a front lens and a rear lens; driver electric chips, vcsel optical chips, PD optical chips and TIA electric chips are distributed in the front lens and the rear lens; the rear lens is inserted with the rear Mini-MT inserting core, the angle of the reflecting surface of the front lens is more than or equal to 46 degrees, and the front lens is obliquely inserted with the front Mini-MT inserting core upwards. The beneficial effects are as follows: because the angle of the reflecting surface of the front lens is more than or equal to 46 degrees, namely the reflecting surface is adjusted to be a larger angle, the fiber outlet angle of the front Mini-MT ferrule is not 0 degree horizontally any more, but is inclined upwards, so that interference with the rear lens is avoided, the purpose of shortening the distance between the front lens and the rear lens is achieved, the purpose of shortening a high-speed signal line of an electric chip in the rear lens on a PCBA board on the premise that the optical performance of the front lens is not influenced is achieved, and the electric performance in the rear lens is improved.
Description
Technical Field
The invention relates to the field of optical modules, in particular to an 800G multimode optical module.
Background
The conventional 800G multimode optical module generally adopts an 8-channel optical scheme, namely 8X100G (single-channel 100G), and the structure of the conventional 800G multimode optical module is as shown in fig. 1, 2 and 3, and includes: the PCBA board, a DSP chip and two lenses which are sequentially arranged on the PCBA board along the light path, wherein the two lenses have the same structure to form a front four-way path and a rear four-way path; the Driver electric chip, the Vcsel optical chip, the PD optical chip and the TIA electric chip are distributed in the two lenses, and the reflecting surfaces of the two lenses are 45 degrees, so that Mini-MT inserting cores which are horizontally distributed are inserted on the reflecting surfaces of the two lenses, and the 800G multimode optical module has the following defects:
1) To avoid interference between the optical fibers of the front lens and the rear lens, the two lenses are usually far apart, because if the distance is too close, the force of excessive bending of the optical fibers can cause the light path displacement of the Mini-MT ferrule on the front lens and the front lens, thus causing the optical performance to be reduced, and if the rear lens is too close, the length of the optical fibers is insufficient, the force of excessive bending of the optical fibers can cause the light path displacement of the Mini-MT ferrule on the rear lens and the rear lens when the module is assembled to the housing, thus causing the optical performance to be reduced;
2) The distance L1 between the two lenses is large, so that the distance between an electric chip in the rear lens and the DSP chip is too far, the consumption of a high-frequency signal on the PCBA board is too large, and the electric performance is poor;
3) Two electric chips in each lens are arranged side by side, and the heat dissipation effect is poor.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an 800G multimode optical module so as to overcome the defects in the prior art.
The technical scheme for solving the technical problems is as follows: an 800G multimode optical module comprising: a PCBA board, a DSP chip, a front lens and a rear lens which are sequentially arranged on the PCBA board; the Driver electric chip, the Vcsel optical chip, the PD optical chip and the TIA electric chip are distributed in the front lens and the rear lens; the rear Mini-MT ferrule horizontally distributed is inserted on the rear lens, and is characterized in that the angle of the reflecting surface of the front lens is more than or equal to 46 degrees, and the front Mini-MT ferrule is inserted on the front lens obliquely upwards.
The beneficial effects of the invention are as follows:
the angle of the reflecting surface of the front lens is larger than or equal to 46 degrees, namely the reflecting surface is adjusted to be larger, so that the light emergent angle of the reflecting surface is not 0 degree horizontally any more, therefore, the front Mini-MT ferrule can be obliquely inserted on the front lens, the fiber emergent angle of the front Mini-MT ferrule is not 0 degree horizontally any more, but is obliquely upward, interference with the rear lens is avoided, the aim of shortening the distance between the front lens and the rear lens is fulfilled, the optical performance of the rear lens is improved on the premise that the optical performance of the front lens is not influenced, in addition, the distance between the front lens and the rear lens is shortened, the high-speed signal line of an electric chip in the rear lens on the PCBA plate is shortened, the consumption of high-frequency signals on the PCBA plate is reduced, and the electric performance in the rear lens is improved.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the angle of the reflecting surface of the front lens is 46-56 degrees.
Further, the reflecting surface angle of the front lens is 50 °.
The beneficial effects of adopting the two steps are that: the distance between the front lens and the rear lens can be effectively reduced, so that the problems that the electrical performance is poor due to the fact that the distance between the front lens and the rear lens is too large and the distance between an electrical chip in the rear lens and a DSP chip is too large and high-frequency signals are consumed on a PCBA board are solved.
Further, the spacing between the front lens and the rear lens is less than or equal to 1mm.
Further, the front lens is symmetrical along the optical axis direction, and the Driver electronic chip, the Vcsel electronic chip, the PD electronic chip and the TIA electronic chip below the front lens are mirror image patches along the optical axis of the front lens.
The adoption of the method has the further beneficial effects that: the purposes of heat dissipation optimization and power consumption reduction can be achieved.
Further, the rear lens is symmetrical along the optical axis direction, and the Driver optical chip, the Vcsel optical chip, the PD optical chip and the TIA optical chip below the rear lens are mirror image patches along the optical axis of the rear lens.
The adoption of the method has the further beneficial effects that: the purposes of heat dissipation optimization and power consumption reduction can be achieved.
Further, the front Mini-MT ferrule is connected with the MT ferrule through a front optical fiber.
Further, the rear Mini-MT ferrule is connected with the MT ferrule through a rear optical fiber.
Drawings
FIG. 1 is a side view of a conventional 800G multimode optical module;
FIG. 2 is a diagram showing the cooperation of a lens and a Mini-MT ferrule in a conventional 800G multimode optical module;
FIG. 3 is a top view distribution of a chip on a PCBA board in a conventional 800G multimode optical module;
FIG. 4 is a side view of an 800G multimode optical module according to the present invention;
FIG. 5 is a diagram showing the cooperation of a front lens and a front Mini-MT ferrule in an 800G multimode optical module according to the present invention;
FIG. 6 is a top view of an 800G multimode optical module according to the present invention;
fig. 7 is a top view of a chip on a PCBA board in an 800G multimode optical module according to the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. PCBA board, 2, DSP chip, 3, front lens, 4, rear lens, 5, driver electric chip, 6, vcsel optical chip, 7, PD optical chip, 8, TIA electric chip, 9, rear Mini-MT lock pin, 10, front Mini-MT lock pin, 11, front optical fiber, 12, MT lock pin, 13, rear optical fiber.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Example 1
As shown in fig. 4, 6 and 7, an 800G multimode optical module includes: the optical lens comprises a PCBA board 1, a DSP chip 2, a front lens 3 and a rear lens 4, wherein the DSP chip 2, the front lens 3 and the rear lens 4 are sequentially arranged on the PCBA board 1;
a Driver electric chip 5, a Vcsel optical chip 6, a PD optical chip 7 and a TIA electric chip 8 are arranged in the front lens 3;
a Driver electric chip 5, a Vcsel optical chip 6, a PD optical chip 7 and a TIA electric chip 8 are also arranged in the rear lens 4;
the reflecting surface of the rear lens 4 is 45 degrees, so that the rear Mini-MT ferrule 9 which is horizontally distributed is inserted on the rear lens 4, and the fiber outlet angle of the rear Mini-MT ferrule 9 is horizontal 0 degree;
the angle of the reflecting surface of the front lens 3 is more than or equal to 46 degrees, so that the front Mini-MT ferrule 10 is obliquely inserted upwards on the front lens 3, and the inclination angle of the front Mini-MT ferrule 10 is changed along with the change of the design angle of the reflecting surface of the front lens 3;
in this embodiment, since the angle of the reflecting surface of the front lens 3 is greater than or equal to 46 °, that is, the reflecting surface is adjusted to be a larger angle, so that the light emitting angle of the reflecting surface is no longer 0 ° horizontal, therefore, the front Mini-MT ferrule 10 can be inserted onto the front lens 3 obliquely upwards, so that the light emitting angle of the front Mini-MT ferrule 10 is no longer 0 ° horizontal, but obliquely upwards, thereby avoiding interference with the rear lens 4, achieving the purpose of shortening the distance between the front lens 3 and the rear lens 4, so as to improve the optical performance of the rear lens 4 without affecting the optical performance (the optical performance of the front lens 3 is unchanged), and in addition, since the distance between the front lens 3 and the rear lens 4 is shortened, the high-speed signal line of the electrical chip in the rear lens 3 on the PCBA board 1 is shortened, so that the consumption of the high-frequency signal on the PCBA board 1 is reduced, and the electrical performance in the rear lens 3 is improved.
Example 2
As shown in fig. 5, this embodiment is a further improvement of embodiment 1, and is specifically as follows:
the angle of the reflecting surface of the front lens 3 is 46-56 degrees, and the following steps are further: the angle of the reflecting surface of the front lens 3 is preferably 50 deg., and the different size lenses each have an optimum angle, but are substantially around 50 deg., so that the spacing between the front lens 3 and the rear lens 4 is 1mm or less.
Example 3
As shown in fig. 7, this embodiment is a further improvement of the embodiment 1 or 2, and is specifically as follows:
the front lens 3 is symmetrical along the optical axis direction, and the Driver electric chip 5, the Vcsel optical chip 6, the PD optical chip 7 and the TIA electric chip 8 below the front lens 3 are mirror image patches along the optical axis of the front lens 3, so that the purposes of heat dissipation optimization and power consumption reduction can be achieved.
Further: the rear lens 4 is symmetrical along the optical axis direction, and the Driver electric chip 5, the Vcsel optical chip 6, the PD optical chip 7 and the TIA electric chip 8 below the rear lens 4 are mirror image patches along the optical axis of the rear lens 4, so that the purposes of heat dissipation optimization and power consumption reduction can be achieved.
Example 4
As shown in fig. 4 and 6, this embodiment is a further improvement of the embodiment 1, 2 or 3, and is specifically as follows:
the front Mini-MT ferrule 10 is connected to the MT ferrule 12 by a front optical fiber 11, and the rear Mini-MT ferrule 9 is connected to the MT ferrule 12 by a rear optical fiber 13.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (8)
1. An 800G multimode optical module comprising: a PCBA board (1), a DSP chip (2), a front lens (3) and a rear lens (4) which are sequentially arranged on the PCBA board (1); a Driver electric chip (5), a Vcsel optical chip (6), a PD optical chip (7) and a TIA electric chip (8) are distributed in the front lens (3) and the rear lens (4); the rear Mini-MT ferrule (9) horizontally distributed is inserted on the rear lens (4), and the rear lens is characterized in that the angle of the reflecting surface of the front lens (3) is more than or equal to 46 degrees, the front Mini-MT ferrule (10) is inserted on the front lens (3) obliquely upwards, the fiber outlet angle of the front optical fiber (11) connected to the front Mini-MT ferrule (10) is obliquely upwards so as to avoid interference with the rear lens (4), the distance between the front lens (3) and the rear lens (4) is shortened, and the high-speed signal line of an electric chip on the PCBA board (1) in the rear lens (4) is shortened.
2. An 800G multimode optical module according to claim 1, wherein: the angle of the reflecting surface of the front lens (3) is 46-56 degrees.
3. An 800G multimode optical module according to claim 2, wherein: the reflecting surface angle of the front lens (3) is 50 degrees.
4. An 800G multimode optical module according to claim 1, wherein: the distance between the front lens (3) and the rear lens (4) is less than or equal to 1mm.
5. An 800G multimode optical module according to claim 1, wherein: the front lens (3) is symmetrical along the optical axis direction, and the Driver electric chip (5), the Vcsel optical chip (6), the PD optical chip (7) and the TIA electric chip (8) below the front lens (3) are mirror image patches along the optical axis of the front lens (3).
6. An 800G multimode optical module according to claim 1, wherein: the rear lens (4) is symmetrical along the optical axis direction, and the Driver electric chip (5), the Vcsel optical chip (6), the PD optical chip (7) and the TIA electric chip (8) below the rear lens (4) are mirror image patches along the optical axis of the rear lens (4).
7. An 800G multimode optical module according to claim 1, wherein: the front Mini-MT ferrule (10) is connected with the MT ferrule (12) through a front optical fiber (11).
8. An 800G multimode optical module according to claim 1, wherein: the rear Mini-MT ferrule (9) is connected with the MT ferrule (12) through a rear optical fiber (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311129413.5A CN116908974B (en) | 2023-09-04 | 2023-09-04 | 800G multimode optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311129413.5A CN116908974B (en) | 2023-09-04 | 2023-09-04 | 800G multimode optical module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116908974A CN116908974A (en) | 2023-10-20 |
| CN116908974B true CN116908974B (en) | 2023-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311129413.5A Active CN116908974B (en) | 2023-09-04 | 2023-09-04 | 800G multimode optical module |
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| Country | Link |
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| CN (1) | CN116908974B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212083740U (en) * | 2020-05-22 | 2020-12-04 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN112748502A (en) * | 2019-10-31 | 2021-05-04 | 佑胜光电股份有限公司 | Optical transceiver module and optical fiber cable module |
| CN215575810U (en) * | 2021-07-26 | 2022-01-18 | 武汉联特科技股份有限公司 | Multi-channel optical module |
| CN216083185U (en) * | 2021-08-26 | 2022-03-18 | 亨通洛克利科技有限公司 | Wavelength division multiplexing 800G optical module |
| CN217181280U (en) * | 2022-05-17 | 2022-08-12 | 青岛海信宽带多媒体技术有限公司 | Optical module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10185103B2 (en) * | 2016-03-04 | 2019-01-22 | Hisense Broadband Multimedia Technologies Co., Ltd. | Optical module |
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- 2023-09-04 CN CN202311129413.5A patent/CN116908974B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748502A (en) * | 2019-10-31 | 2021-05-04 | 佑胜光电股份有限公司 | Optical transceiver module and optical fiber cable module |
| CN212083740U (en) * | 2020-05-22 | 2020-12-04 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN215575810U (en) * | 2021-07-26 | 2022-01-18 | 武汉联特科技股份有限公司 | Multi-channel optical module |
| CN216083185U (en) * | 2021-08-26 | 2022-03-18 | 亨通洛克利科技有限公司 | Wavelength division multiplexing 800G optical module |
| CN217181280U (en) * | 2022-05-17 | 2022-08-12 | 青岛海信宽带多媒体技术有限公司 | Optical module |
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| Publication number | Publication date |
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| CN116908974A (en) | 2023-10-20 |
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