CN110401485A - A kind of optical module - Google Patents
A kind of optical module Download PDFInfo
- Publication number
- CN110401485A CN110401485A CN201910652119.XA CN201910652119A CN110401485A CN 110401485 A CN110401485 A CN 110401485A CN 201910652119 A CN201910652119 A CN 201910652119A CN 110401485 A CN110401485 A CN 110401485A
- Authority
- CN
- China
- Prior art keywords
- golden finger
- row
- pin
- optical module
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- G02B6/4274—Electrical aspects
- G02B6/428—Electrical aspects containing printed circuit boards [PCB]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
- H04B10/25891—Transmission components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/117—Pads along the edge of rigid circuit boards, e.g. for pluggable connectors
Abstract
The present invention discloses a kind of optical module, including circuit board, the first optical chip, the second optical chip and processor, the same surface of circuit board has first row golden finger and second row golden finger, first power pins of first row golden finger are connect with the first optical chip, the second source pin of second row golden finger is connect with the second optical chip and processor respectively, the extending direction of first power pins is overlapped with the extending direction of second source pin, and the first power pins are connected with second source pin.In optical module insertion, power supply elastic slice is remained to be electrically connected with second source pin, so that second source pin remains the power supply state to optical module, can avoid the formation of current surge.
Description
The application is that on 04 06th, 2017 submitting, application No. is a kind of 201710220900.0, entitled optical modules
Divisional application.
Technical field
The present invention relates to optical communication field more particularly to a kind of optical modules.
Background technique
Optical module is the core devices in optical communication system, completes mutually converting for photosignal.
Fig. 1 is a kind of optical module structure schematic diagram that the prior art provides.As shown in Figure 1, optical module include upper housing, under
Shell, optical assembly and circuit board are connected between optical assembly and circuit board by flexible circuit board, and upper housing and lower case are formed and wrapped
The cavity of optical assembly and circuit board is wrapped up in, optical assembly one end is the optical interface of optical module, and optical fiber, circuit board one are connected at optical interface
End is the electrical interface of optical module, connects external system at electrical interface.
Specifically, circuit board surface has processor, optical chip and golden finger, the pin of processor and the pin of optical chip
It is connect respectively with the pin of golden finger.Include multiple pins such as ground pin, power pins and data pin in golden finger.
In the golden finger slot of the golden finger insertion external system of optical module, have and golden finger pin in golden finger slot
One-to-one contact flat spring, when optical module is in conjunction with external system, circuit board is inserted into golden finger slot, contact flat spring folder
Handle circuit board, the pin of elastic slice and golden finger is in electrical contact, wherein power supply elastic slice is contacted with power pins, data elastic slice with
Data pin contact, ground elastic slice are contacted with ground pin.The power pins that external system passes through golden finger are processor and optical chip
Power supply realizes data interaction by data pin and processor and optical chip, passes through the ground of ground pin and processor and optical chip
Connection.
Optical module circuit board is partially inserted into external system, and the surface of the circuit board has row's golden finger pin.Optical mode
Block professional standard is made that the function of golden finger pin and provides one by one, can meet processor and optical chip on optical module
Powered communication requirement, form the matching relationship between a set of golden finger pin, processor and optical chip.
The limitation of board area leads to the limited amount of pin in row's golden finger, with optical chip and place in optical module
The increase of device quantity is managed, golden finger needs to arrange more pins.
Fig. 2 is the golden finger pin design diagram provided in prior art.Due to golden finger pin, processor and light core
There are matching relationships between piece, and when newly increasing optical chip, correspondence has newly increased row's golden finger pin.Specifically, first row
Golden finger pin is matched with a set of optical chip, and second row golden finger pin is matched with another set of optical chip.
External system provides first row contact flat spring and second row contact flat spring, the golden finger pin provided with prior art
Matching.
Optical module during startup, is first powered, and then carries out data communication, first row contact flat spring and second row
Contact flat spring is respectively provided with power supply elastic slice and ground elastic slice, and position of the power pins in every row's golden finger is identical, to prevent gold
During finger pin is inserted into corresponding contact flat spring, non-electrical source pin is contacted with power supply elastic slice, causes device failure.
However, during golden finger pin is inserted into corresponding contact flat spring, the power pins of second row golden finger pin
It is first contacted with first row power supply elastic slice, is then turned off contact, is then contacted with second row power supply elastic slice, lead to second row golden finger
Power supply jump to optical module, power supply jump cause to be powered on by processor and the optical chip experience of second source pin powered, fall
Electricity, the process that powers on again cause processor be in power on reset state and can not normally start or program loss.
Summary of the invention
The embodiment of the present invention provides a kind of optical module, during optical module is inserted into external system, guarantees steady to MCU
Power supply.
In order to achieve the above-mentioned object of the invention, the embodiment of the present invention adopts the following technical scheme that
The embodiment of the present invention provides a kind of optical module, including circuit board, the first optical chip, the second optical chip and processor, circuit
The same surface of plate has first row golden finger and second row golden finger, the first power pins and the first light of first row golden finger
Chip connection, the second source pin of second row golden finger are connect with the second optical chip and processor respectively, the first power pins
Extending direction be overlapped with the extending direction of second source pin, the first power pins are connected with second source pin.
Optical module needs in the cage at insertion system end when working, the golden hand being inserted into cage by the golden finger of circuit board
Refer to slot, to realize that system powers to the electrical part of optical module.In optical module insertion, first row contacts bullet in golden finger slot
The power supply elastic slice of piece is contacted with second source pin, and with the insertion of optical module, the power supply elastic slice of first row contact flat spring is from
Two power pins slide to the first power pins, due to the extending direction of the first power pins and the extending direction of second source pin
It is overlapped, and the first power pins are connected with the second source pin, power supply elastic slice remains and second source pin
Electrical connection, so that second source pin remains the power supply state to optical module, with prior art second source pin powered
Jump compare, current surge can be avoided the formation of.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the invention
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of optical module structure schematic diagram that the prior art provides；
Fig. 2 is the golden finger pin design diagram provided in prior art；
Fig. 3 is that second row golden finger is inserted into golden finger slot schematic diagram in prior art；
Fig. 4 is that first row golden finger is inserted into golden finger slot schematic diagram in prior art；
Fig. 5 is optical module and MCU electrifying timing sequence figure in prior art；
Fig. 6 is a kind of optical module golden finger pin design diagram provided in an embodiment of the present invention；
Fig. 7 is that second row golden finger is inserted into inserting slot construction schematic diagram in the embodiment of the present invention；
Fig. 8 is optical module and MCU electrifying timing sequence figure in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is a kind of optical module structure schematic diagram that the prior art provides, as shown in Figure 1, generally, optical module includes upper
Shell C1, lower case C2, optical assembly CH and circuit board have optical chip (laser chip or light detecting chip) in optical assembly, electricity
There is electrical parts such as microprocessor M (MCU) on the plate of road
Since the type of optical module product is different, the specific connection form of optical chip and circuit board is different, and optical chip can be with
It puts on circuit boards, can also be placed in optical assembly, but optical chip and driving chip are and circuit board electrical connection.
Optical module needs in the cage at insertion system end when working, specifically, in the golden finger P0 insertion cage of circuit board
Golden finger slot, conductance is entered by circuit board by golden finger, with realize to the electrical parts such as optical chip, driving chip and MCU supply
Electricity.
It is hot plugging between golden finger and golden finger slot provided in an embodiment of the present invention, specifically, golden finger is inserted
Slot electrification, when golden finger is contacted with golden finger slot, the electrical part (such as microprocessor, optical chip, the driving that are connected with golden finger
Chip etc.) it will power on.
Specifically, one end in circuit board insertion cage has golden finger.Golden finger can directly on the board surface
It is made, is also possible to stand-alone assembly product, combined with circuit board realization.Circuit board, which has, can be set the opposite of golden finger
Two surfaces, in the embodiment of the present invention, first row golden finger and second row golden finger position are in the same side surface of circuit board, with this
Another opposite surface of same side surface, can be set golden finger, can also be not provided with golden finger.Have on circuit board and leads
The electrical parts such as driving chip and MCU are connect with golden finger by line, conducting wire respectively.
Different according to the electrical signal types of conducting, the pin of golden finger is divided into power pins, signal pins and ground pin.In
In specific embodiment, the pin function of golden finger is defined in existing professional standard, early from the point of view of the evolution process of product
Circuit board only has row's golden finger in phase optical module, is included in circuit board apparent surface and is simutaneously arranged a this feelings of row's golden finger
Shape, the arragement direction of golden finger is perpendicular to the length direction of circuit board, and the plugging direction of pin is parallel to circuit board in golden finger
Length direction.For these golden finger pins, professional standard is made that definition to pin function so that optical chip, MCU and this
One row's golden finger forms the system of a set of cooperation.
When increasing optical chip, it is matched to need to increase pin, the limitation of the pin number as caused by board area,
So that row's golden finger can not provide sufficient amount of pin.
Increase the mode of pin, the technical solution of Yi Shixian be newly increase row's golden finger so that increased optical chip with
Increased golden finger forms the system of another set of cooperation.
Fig. 2 is the golden finger pin design diagram provided in prior art, as shown in Fig. 2, the row's gold hand newly increased
Refer to that there are insulation gap G between P1 and original row golden finger P2.Optical module is during the insertion system end of the direction A, and
The signal elastic slice of one row's contact flat spring is contacted with the signal pins of second row golden finger, so that signal imports the signal pins, and
For the signal pins, the signal imported at this time is the signal of mistake, which should be with second row contact flat spring
Contact.
For the error signal of importing, need to eliminate by way of self discharge, this is just needed in first row contact flat spring
After being disengaged with second row golden finger, before second row contact flat spring is contacted with second row golden finger, when retaining certain
Between be spaced, allow import error signal second row golden finger pin self discharge.
In order to realize pin self discharge, in corresponding golden finger design, first row golden finger signal pins and second row gold
Need to keep certain insulation gap between finger signal pin, and insulation gap in the case where space allows as far as possible
Greatly.
The row's golden finger newly increased can be the duplication of this original row's golden finger, be also possible on the basis of duplication
The fine tuning of pin function is carried out, the row's golden finger newly increased is mainly used for the optical chip that connection newly increases, so having basic
Power pins and signal pins.Specifically, first row golden finger P1 has the first power pins 106, second row golden finger P2
With second source pin 107, the first power pins 106 are in same extending direction with second source pin 107.
Increase mode according to above-mentioned pin, the golden finger of optical module has two rows of pins, the second electricity in the embodiment of the present invention
Source pin 107 is compared with the first power pins 106 closer to the edge termination of circuit board.First row golden finger is used to be the first optical chip
Electric signal is provided, second row golden finger is used to for the second optical chip provide electric signal, specifically, the first power pins 106 and the
The connection of one optical chip, second source pin 107 are connect with the second optical chip.
MCU can be connect by first row golden finger with external system, can also pass through second row golden finger and external system
System connection.The quantity of MCU can be one, be also possible to two or more；When MCU quantity is one, MCU can be supported simultaneously
First optical chip and the operation of the second optical chip, when MCU quantity is more than two, the first MCU supports the operation of the first optical chip, the
Two MCU support the operation of the second optical chip.
The structure of optical module golden finger and the structure of external system are mutually matched.Golden finger slot is in external system
Component in conjunction with optical module golden finger, Fig. 3 are that second row golden finger is inserted into golden finger slot schematic diagram in prior art, are such as schemed
Shown in 3, optical module 101 is inserted into external system 102, and 103 surface of optical module circuit board has the first power pins 106 and the second electricity
Source pin 107 has first row contact flat spring 104 and second row contact flat spring 105 in golden finger slot, in optical module golden finger
During insertion, A is slided the pin of golden finger to contact flat spring direction in the same direction, when pin slides into contact flat spring
Place, pin are connect because contacting with each other to establish electric conductivity with contact flat spring, and the electric conductivity of pin and contact flat spring, which connects, to be realized
Being electrically connected between optical module and external system.
The signal type provided according to contact flat spring in slot is different, contact flat spring be divided into power supply elastic slice, signal elastic slice and
Ground elastic slice, respectively in golden finger power pins, signal pins and ground pin it is corresponding.By power pins be connected voltage compared with
Height, and it is lower by the voltage that signal pins are connected.
Golden finger is two rows in optical module, corresponding, and the contact flat spring in golden finger slot is two rows, reaches final knot
When conjunction state, first row contact flat spring 104 is contacted with the first power pins 106, and second row contact flat spring 105 draws with second source
Foot 107 contacts.Due in contact process, be from the pin of golden finger in the same direction A to contact flat spring direction slide, so
Power supply elastic slice in first row contact flat spring 104 can be contacted successively with second source pin 107 and the first power pins 106.If
When second source pin 107 and first row contact flat spring 104 contact, the corresponding pin of second source pin 107 draws for non-power
Foot, then will lead to high voltage access voltage devices in, cause device failure, thus the power pins in first row golden finger with
Power pins in second row golden finger are in same extending direction, so that the electricity in sliding process, in first row golden finger
Power pins in source pin 106 and second source pin 107 pass sequentially through the same contact flat spring in slot.
During golden finger is inserted into external system, the first power supply elastic slice with first row contact flat spring of second source pin
Contact, with the sliding of golden finger, second source pin is separated with the power supply elastic slice of first row contact flat spring, then passes through first
After sliding time, second source pin is contacted with the power supply elastic slice of second row contact flat spring.
Fig. 4 is that first row golden finger is inserted into golden finger slot schematic diagram in prior art, as shown in figure 4, the first power supply draws
Foot 106 is contacted with first row contact flat spring 104, and second source pin 107 is contacted with second row contact flat spring 105, has been reached most
Whole plugging state.
Sliding relation is opposite, it is understood that for first row contact flat spring power supply elastic slice to second source pin direction
Sliding, and backward first power pins direction continues to slide.
Optical module during startup, is first powered, and then carries out data communication, first row contact flat spring and second row
Contact flat spring is respectively provided with power supply elastic slice and ground elastic slice, and position of the power pins in every row's golden finger is identical, to prevent gold
During finger pin is inserted into corresponding contact flat spring, non-electrical source pin is contacted with power supply elastic slice, causes device failure, so
In the embodiment of the present invention, the extending direction of the first power pins is overlapped with the extending direction of second source pin, so that first connects
The power pins of touching elastic slice successively slip over second source pin and the first power pins.
Second source pin, which experienced, to be powered on, power down, powers on three kinds of states again.Fig. 5 is optical module and MCU in prior art
Electrifying timing sequence figure.At the t1 moment, by the power supply of second source pin 107, optical module module is started power up, existing when powering on
There is technology to open technology using slow, at the t2 moment, optical module voltage reaches normal voltage vcc, and after optical module voltage stabilization, MCU is opened
Beginning powers on；With the sliding of golden finger, at the t3 moment, second row golden finger loses with first row contact flat spring and contacts, optical module
And MCU starts power down, at the t4 moment, second row golden finger is contacted with second row contact flat spring, and optical module and MCU recovery power on.
It can be seen that, during golden finger is inserted into golden finger slot, MCU is undergone from the voltage timing of MCU in Fig. 4
It powers on, power down, the process powered on again.
Although the prior art have it is slow open technology, slow from t1 to t2 opens the time, far smaller than second row golden finger
Slide into the time of second row contact flat spring.
During golden finger is inserted into external system, the first power pins are slided to first row contact flat spring direction, sliding
Dynamic the first power pins of process are constantly in power-down state, until the power supply elastic slice of the first power pins and first row contact flat spring
Contact, power pins become power-up state.
In the embodiment of the present invention, the size of each pin follows industry consensus standard and (or provides length and width in first row golden finger
Numberical range).
When the power supply elastic slice of the first power pins and second row contact flat spring contacts, power supply elastic slice is supplied to power pins
Electricity, the optical chip being connected at this time with power pins, driving chip and MCU are powered on and initialized work, and MCU, which brings into operation, initializes journey
Sequence generates initialization data,
And as the sliding of golden finger pin, the first power pins and the power supply elastic slice of first row contact flat spring disengage, on
Power-up initializing work is stated to interrupt suddenly；
Continue to slide with golden finger pin, the first power pins are contacted with the power supply elastic slice of first row contact flat spring, with
Optical chip, driving chip and the MCU of one power pins connection are re-powered again；
Powering in the short time, lower electricity, again power up, can make in circuit that there are current surges, cause MCU operation troubles,
This process will lead to the single-chip microprocessor MCU that inside modules use or other chips, can not be just in power on reset state
Often starting or program are lost, to influence optical module normal work.
Fig. 6 a kind of optical module golden finger pin design diagram provided in an embodiment of the present invention, as shown in fig. 6, of the invention
The optical module that embodiment provides, the first power pins 106 are connected with second source pin 107, first row golden finger and circuit
The cabling of plate surface is connected, and second row golden finger is connected by via hole with the cabling of interlayer circuit board.
Fig. 7 is that second row golden finger is inserted into inserting slot construction schematic diagram in the embodiment of the present invention, as shown in fig. 7, in optical module
When insertion, the power supply elastic slice of first row contact flat spring 104 and 107 second source pins in second row golden finger in golden finger slot
Contact, with the insertion of optical module, the power supply elastic slice of first row contact flat spring slides to the first power supply from second source pin 107 and draws
Foot 106, since the extending direction of the first power pins 106 is overlapped with the extending direction of second source pin 107, and the first electricity
Source pin 106 is connected with the second source pin 107, and second source pin 107 remains and the power supply in contact flat spring
Elastic slice electrical connection, so that second source pin remains the power supply state to optical module, with prior art second source pin
The jump of power supply is compared, and current surge can be avoided the formation of, and avoids optical module operation troubles.
Fig. 8 is optical module and MCU electrifying timing sequence figure in the embodiment of the present invention, as shown in figure 8, at the t2 moment, optical module and
After MCU is powered on by second source pin, power-up state is always maintained at t3, t4 moment.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (4)
1. a kind of optical module, which is characterized in that including circuit board, driving chip and processor；The same surface of the circuit board
With first row golden finger and second row golden finger；The conducting wire and first row gold that the driving chip passes through the circuit board
Finger connection；The second source of the extending direction of first power pins of the first row golden finger and the second row golden finger
The extending direction of pin is overlapped, and first power pins are connected with the second source pin.
2. optical module as described in claim 1, which is characterized in that the first row golden finger is walked with the circuit board surface
Line is connected, and the second row golden finger is connected by via hole with the cabling of the interlayer circuit board.
3. optical module as claimed in claim 2, which is characterized in that in the first row golden finger and the second row golden finger
It include data pin.
4. optical module as described in claim 1, which is characterized in that the second source pin of the second row golden finger passes through institute
The conducting wire for stating circuit board is connected to the processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910652119.XA CN110401485B (en) | 2017-04-06 | 2017-04-06 | Optical module |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710220900.0A CN107104735B (en) | 2017-04-06 | 2017-04-06 | A kind of optical module |
| CN201910652119.XA CN110401485B (en) | 2017-04-06 | 2017-04-06 | Optical module |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710220900.0A Division CN107104735B (en) | 2017-04-06 | 2017-04-06 | A kind of optical module |
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| Publication Number | Publication Date |
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| CN110401485A true CN110401485A (en) | 2019-11-01 |
| CN110401485B CN110401485B (en) | 2021-12-14 |
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| CN201910652119.XA Active CN110401485B (en) | 2017-04-06 | 2017-04-06 | Optical module |
| CN201710220900.0A Active CN107104735B (en) | 2017-04-06 | 2017-04-06 | A kind of optical module |
| CN201910652120.2A Active CN110299946B (en) | 2017-04-06 | 2017-04-06 | Optical module |
| CN201910651565.9A Active CN110299945B (en) | 2017-04-06 | 2017-04-06 | Optical module |
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| CN201910652120.2A Active CN110299946B (en) | 2017-04-06 | 2017-04-06 | Optical module |
| CN201910651565.9A Active CN110299945B (en) | 2017-04-06 | 2017-04-06 | Optical module |
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| CN113271150A (en) * | 2021-05-17 | 2021-08-17 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN113328419A (en) * | 2021-07-29 | 2021-08-31 | 深圳市迅特通信技术股份有限公司 | Surge current control circuit of pluggable module and pluggable module |
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| EP3694119B1 (en) * | 2018-03-29 | 2022-03-02 | Hisense Broadband Multimedia Technologies Co., Ltd. | Optical module |
| CN110729265B (en) * | 2019-10-21 | 2021-08-24 | 青岛海信宽带多媒体技术有限公司 | Optical module and optical network device |
| CN114071865A (en) * | 2020-07-30 | 2022-02-18 | 华为技术有限公司 | Golden finger connector, female end connector and communication equipment |
| CN117080779B (en) * | 2023-10-16 | 2024-01-02 | 成都电科星拓科技有限公司 | Memory bar plugging device, method for adapting memory controller to memory bar plugging device and working method |
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| CN113271150A (en) * | 2021-05-17 | 2021-08-17 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN113328419A (en) * | 2021-07-29 | 2021-08-31 | 深圳市迅特通信技术股份有限公司 | Surge current control circuit of pluggable module and pluggable module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110299946A (en) | 2019-10-01 |
| CN110299945B (en) | 2022-05-17 |
| CN107104735A (en) | 2017-08-29 |
| CN110299945A (en) | 2019-10-01 |
| CN110401485B (en) | 2021-12-14 |
| CN107104735B (en) | 2019-09-03 |
| CN110299946B (en) | 2022-07-01 |
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