CN207083090U - A kind of SFP28 optical modules - Google Patents
A kind of SFP28 optical modules Download PDFInfo
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- CN207083090U CN207083090U CN201720398630.8U CN201720398630U CN207083090U CN 207083090 U CN207083090 U CN 207083090U CN 201720398630 U CN201720398630 U CN 201720398630U CN 207083090 U CN207083090 U CN 207083090U
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- data recovery
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Abstract
A kind of SFP28 optical modules are the utility model is related to, the optical module includes：Including housing and the golden finger being arranged on housing, circuit part and light path part, circuit part is set to include in housing：MCU controllers and master chip；Light path part includes：Light emission component and light-receiving component；Integration laser drive circuit, clipping amplifier circuit, the first clock data recovery circuit and second clock data recovery circuit in master chip；Light emission component includes：Directly modulate laser；Light-receiving component includes：Photodiode and trans-impedance amplifier.The circuit part of optical module is integrated in master chip, reduce the design work of circuit board, reduce influencing each other for device and circuit, technological process is shortened, and the utility model does not use the golden box encapsulated laser of level Hermetic Package, is packaged using TO CAN techniques, not only technique is simple, more effectively solve heat dissipation problem, reduce cost of manufacture, improve practicality.
Description
Technical field
Optical module receive-transmit system is the utility model is related to, more particularly to a kind of SFP28 optical modules.
Background technology
Existing SFP28 solutions are all that driving chip is placed within golden box (i.e. BOX encapsulation), but 25Gbps
Chip of laser very To Be Protected from Heat, so as to bring the challenge of heat dissipation design, SFP28 modules support 25G ethernet standards, SFP28
25Gbit/s error free transmission can be provided, transmission range can reach 10KM in single-mode fiber, and can apply to highdensity
In 25G ethernet devices and network interface.As market is from every passage 10Gbps to 25Gbps transition, the coming five years SFP28 moulds
The demand of block will increase substantially
Utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in construction, it is easy to accomplish FP28 optical modules,
Solves the problem of packaging technology is complicated, and package assembling cost is higher in existing SFP28.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：A kind of SFP28 optical modules, including housing and set
The golden finger on housing is put, sets circuit part and light path part, the circuit part to include in the housing：MCU is controlled
Device and master chip；The light path part includes：Light emission component and light-receiving component；Integration laser drives in the master chip
Circuit, clipping amplifier circuit, the first clock data recovery circuit and second clock data recovery circuit；The light emission component
Including：The direct modulation laser encapsulated using TO-CAN techniques；The light-receiving component includes：Photodiode and put across resistance
Big device；The MCU controllers are connected with the master chip；First clock data recovery circuit, laser driving electricity
Road and the directly modulation laser are sequentially connected；The photodiode, the trans-impedance amplifier, limiting amplifier electricity
Road and second clock data recovery circuit are sequentially connected.
The beneficial effects of the utility model are：The circuit part of optical module is integrated in master chip, reduces circuit board
Influencing each other for design work, reduction device and circuit, shortens technological process, and the utility model does not use level Hermetic Package
Golden box encapsulated laser, be packaged using TO-CAN techniques, not only technique is simple, more effectively solves radiating and asks
Topic, reduces cost of manufacture, improves practicality.
On the basis of above-mentioned technical proposal, the utility model can also do following improvement.
Further, the MCU controllers are connected by I2C data/address bus with the master chip.
It is using the above-mentioned further beneficial effect of scheme：The MCU controllers pass through I2C data/address bus and the main core
Piece is connected, and to control and change the value of register in master chip, main core is set by changing the different value of master chip phase storage
The underlying parameter value of all parts integrated in piece.
Further, the golden finger is configured using surface-pasted mode, and the golden finger is provided with 20 pipes
Pin.
Further, the MCU controllers are connected by the golden finger with external equipment.
It is using the above-mentioned further beneficial effect of scheme：Cost of manufacture is reduced, it is simple in construction, it is user-friendly.
Further, the input of the output end of the semiconductor laser and the photodiode is respectively connected with LC
Optical fiber interface.
Further, the SFP28 optical modules also include：Differential electric signal shunt circuit, the differential electric signal shunt circuit
Including impedance distributor circuit and two groups of impedance matching circuits；The impedance distributor circuit input input difference electric signal, it is described
Impedance distributor circuit output end is connected with impedance matching circuit input described in two groups respectively, and impedance matching circuit described in two groups is defeated
Go out end to be connected with first clock data recovery circuit respectively.
It is using the above-mentioned further beneficial effect of scheme：The differential electric signal of input is allocated and matching is divided into two
Road differential electric signal, two-pass DINSAR electric signal is transmitted, prevents data from being lost in transmitting procedure.
Further, first clock data recovery circuit and laser driving circuit are provided with two-way, described directly to adjust
Laser processed is provided with two groups, and impedance matching circuit output end described in two groups connects the first clock and data recovery electricity all the way respectively
Road, first clock data recovery circuit connect laser driving circuit all the way, the laser driving circuit difference respectively
Connect one group of light emission component.
It is using the above-mentioned further beneficial effect of scheme：Two groups of differential electric signals are carried out respectively to be converted to laser signal
It is transmitted.
Further, directly modulation laser connects a quarter-wave plate respectively described in two groups, two described four/
One wave plate is connected with photo-coupler respectively.
It is using the above-mentioned further beneficial effect of scheme：First pass through the laser that quarter-wave plate judges laser transmitting
Signal is filtered, and then carries out multiplex by photo-coupler, completes to transmit while laser intelligence, two groups of data are mutually right
According to preventing loss of data.
Brief description of the drawings
Fig. 1 is a kind of SFP28 optical module structures schematic diagram that the utility model embodiment provides；
MCU controllers are with interacting machine knot in a kind of SFP28 optical modules that Fig. 2 provides for the utility model another kind embodiment
Structure schematic diagram；
Fig. 3 is differential electric signal shunt circuit in a kind of SFP28 optical modules that the utility model another kind embodiment provides
Schematic diagram；
Fig. 4 is a kind of SFP28 optical modules transmitting terminal structural representation that the utility model another kind embodiment provides.
Embodiment
Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
As shown in figure 1, a kind of SFP28 optical modules, including housing and the golden finger being arranged on housing, housing is interior to set electricity
Road part and light path part, circuit part include：MCU controllers and master chip；Light path part includes：Light emission component and light connect
Receive component；In master chip when integration laser drive circuit, clipping amplifier circuit, the first clock data recovery circuit and second
Clock data recovery circuit；Light emission component includes：The direct modulation laser encapsulated using TO-CAN techniques；Light-receiving component bag
Include：Photodiode and trans-impedance amplifier；MCU controllers are connected with master chip；It is first clock data recovery circuit, described
Laser driving circuit and the directly modulation laser are sequentially connected；It is the photodiode, the trans-impedance amplifier, described
Clipping amplifier circuit and second clock data recovery circuit are sequentially connected.
Above-mentioned SFP28 modules, using TO-CAN packing forms encapsulated lasers, support 25G ethernet standards.SFP28 energy
25Gbit/s error free transmission is provided, transmission range can reach 10KM in single-mode fiber, and can apply to highdensity 25G
In ethernet device and network interface, connected for enterprise upgrading 10G Ethernets, there is provided a more cost effective solution party
Case.Full metal jacket is used in structure, double LC interfaces are used in optical-fibre channel, compatible SFF-8402 agreements, meet MSA SFP+
Standard.Circuit part is formed using a single-chip microprocessor MCU controller and a master chip.The master chip that this project uses is to send out
The chip for the transmitting-receiving unification that the clipping amplifier circuit of the laser driving circuit and receiving terminal of penetrating end integrates, and core
The transmitting-receiving path of piece all contains a ce circuit, and cost can be substantially reduced compared with receiving and dispatching independent chip.Light path part
Formed by launching and receiving two parts, transmitting terminal uses 1310nm DML lasers, makes light by TO-CAN packaging technologies and sends out
Penetrate component, receiving terminal is photodiode and trans-impedance amplifier is packaged together light-receiving component.
Preferably, MCU controllers are connected by I2C data/address bus with master chip, and MCU controllers pass through I2C data/address bus
It is connected with master chip, to control and change the value of register in master chip, is set by changing the different value of master chip phase storage
Put the underlying parameter value of all parts integrated in master chip.
Preferably, the golden finger is configured using surface-pasted mode, and the golden finger is provided with 20 pipes
Pin.
As shown in Figure 2, it is preferred that MCU controllers are connected by golden finger with external equipment, and external equipment includes：Exchange
Machine, it is connected by the way of golden finger with external equipment, reduces cost of manufacture, it is simple in construction, it is user-friendly.
Preferably, the input of the output end of the semiconductor laser and the photodiode is respectively connected with LC
Optical fiber interface.
As shown in Figure 3, it is preferred that the SFP28 optical modules also include：Differential electric signal shunt circuit, the difference telecommunications
Number shunt circuit includes impedance distributor circuit and two groups of impedance matching circuits；The impedance distributor circuit input input difference electricity
Signal, the impedance distributor circuit output end are connected with impedance matching circuit input described in two groups respectively, impedance described in two groups
Match circuit output end is connected with first clock data recovery circuit respectively.
As shown in Figure 4, it is preferred that the first clock data recovery circuit and laser driving circuit are provided with two-way, directly
Modulation laser is provided with two groups, and two groups of impedance matching circuit output ends connect the first clock data recovery circuit all the way respectively,
First clock data recovery circuit connects laser driving circuit all the way respectively, and laser driving circuit connects one group of light hair respectively
Penetrate component.
Preferably, directly modulate laser and connect a quarter-wave plate respectively for two groups, two quarter-wave plates point
It is not connected with photo-coupler, the laser signal sent from direct modulation laser is converted to circular polarization by quarter-wave plate and swashed
Optical signal, when the end face that circularly polarized laser signal runs into Transmission Fibers is reflected, return light again passes by quarter-wave
Become the laser signal vertical with the laser signal polarization direction for directly modulating laser after piece, will not be to directly modulating laser
Interference is formed, does not influence the normal work of directly modulation laser, quarter-wave plate cost is low, small volume, can meet to send out
Optical assembly small size, low-cost design requirement, when slide assembly direction meets the directly polarization direction of modulation laser and four points
One of 45 ° positive and negative 1 ° of the optical axis included angle of wave plate when, luminescence component can preferably reach photoelectric conversion module anti-reflection effect.Four
/ mono- wave plate cost is 20% of optoisolator or so, carries out antireflection relative to using optoisolator, greatly reduces
Photoelectric conversion module cost.
Preferred embodiment of the present utility model is these are only, it is all in the utility model not to limit the utility model
Spirit and principle within, any modification, equivalent substitution and improvements made etc., should be included in protection model of the present utility model
Within enclosing.
Claims (8)
1. a kind of SFP28 optical modules, it is characterised in that including housing and the golden finger being arranged on housing, set in the housing
Circuits part and light path part, the circuit part include：MCU controllers and master chip；The light path part includes：Light is sent out
Penetrate component and light-receiving component；Integration laser drive circuit, clipping amplifier circuit, the first clock data in the master chip
Restoring circuit and second clock data recovery circuit；The light emission component includes：The direct tune encapsulated using TO-CAN techniques
Laser processed；The light-receiving component includes：Photodiode and trans-impedance amplifier；The MCU controllers and the master chip
Connection；First clock data recovery circuit, the laser driving circuit and the directly modulation laser are sequentially connected；
The photodiode, the trans-impedance amplifier, the clipping amplifier circuit and second clock data recovery circuit connect successively
Connect.
2. a kind of SFP28 optical modules according to claim 1, it is characterised in that the MCU controllers pass through I2C data
Bus is connected with the master chip.
3. a kind of SFP28 optical modules according to claim 1, it is characterised in that the golden finger is using surface-pasted
Mode is configured, and the golden finger is provided with 20 pins.
4. a kind of SFP28 optical modules according to claim 3, it is characterised in that the MCU controllers pass through the golden hand
Finger is connected with external equipment.
A kind of 5. SFP28 optical modules according to claim 1, it is characterised in that the output for directly modulating laser
The input of end and the photodiode is respectively connected with LC optical fiber interfaces.
6. a kind of SFP28 optical modules according to any one of claim 1-5, it is characterised in that the SFP28 optical modules are also
Including：Differential electric signal shunt circuit, the differential electric signal shunt circuit include impedance distributor circuit and two groups of impedance matchings
Circuit；The impedance distributor circuit input input difference electric signal, the impedance distributor circuit output end respectively with two groups of institutes
State impedance matching circuit input connection, impedance matching circuit output end described in two groups respectively with first clock and data recovery
Circuit connects.
A kind of 7. SFP28 optical modules according to claim 6, it is characterised in that first clock data recovery circuit
Laser driving circuit is provided with two-way, the directly modulation laser is provided with two groups, impedance matching circuit described in two groups
Output end connects the first clock data recovery circuit all the way respectively, and first clock data recovery circuit connects respectively to swash all the way
Light device drive circuit, the laser driving circuit connect one group of light emission component respectively.
8. a kind of SFP28 optical modules according to claim 7, it is characterised in that laser point is directly modulated described in two groups
Not Lian Jie a quarter-wave plate, two quarter-wave plates are connected with photo-coupler respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720398630.8U CN207083090U (en) | 2017-04-17 | 2017-04-17 | A kind of SFP28 optical modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720398630.8U CN207083090U (en) | 2017-04-17 | 2017-04-17 | A kind of SFP28 optical modules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207083090U true CN207083090U (en) | 2018-03-09 |
Family
ID=61436211
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720398630.8U Active CN207083090U (en) | 2017-04-17 | 2017-04-17 | A kind of SFP28 optical modules |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877936A (en) * | 2017-04-17 | 2017-06-20 | 武汉飞鹏光科技有限公司 | A kind of SFP28 optical modules |
-
2017
- 2017-04-17 CN CN201720398630.8U patent/CN207083090U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877936A (en) * | 2017-04-17 | 2017-06-20 | 武汉飞鹏光科技有限公司 | A kind of SFP28 optical modules |
| CN106877936B (en) * | 2017-04-17 | 2024-02-23 | 武汉飞鹏光科技有限公司 | SFP28 optical module |
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