CN205484931U - Two transmission SFP optical modules of low rate - Google Patents
Two transmission SFP optical modules of low rate Download PDFInfo
- Publication number
- CN205484931U CN205484931U CN201620217167.8U CN201620217167U CN205484931U CN 205484931 U CN205484931 U CN 205484931U CN 201620217167 U CN201620217167 U CN 201620217167U CN 205484931 U CN205484931 U CN 205484931U
- Authority
- CN
- China
- Prior art keywords
- light source
- control unit
- light
- power
- frequency
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model discloses a two transmission SFP optical modules of low rate, light source driver connects the light source for according to light source drive current driving light source light -emitting, light power detection unit connects power control element, light source, little the control unit for light sources's play luminous power, and will go out the luminous power and feed back power control element, power control element connects light source driver, light power detection unit for according to the feedback information that light power detection unit sent, control light source driver sends the drive current size of light source, in order to adjust light transmit power, little the control unit is used for monitoring optical transmission module 's operating temperature, operating voltage, light power control element low frequency cutoff frequency is less than transmission signal's frequency. The utility model discloses a two transmission SFP optical modules of low rate sets up the frequency for being less than transmission signal through being bare power control element low frequency cutoff frequency, can guarantee data rate tens of kbs when tens of mbs, reliable transmitting data.
Description
Technical field
This utility model relates to optical module field, launches SFP optical module particularly to a kind of low rate is double.
Background technology
In a lot of application of optic communication, it is required for high message transmission rate, thus realizes efficient data transfer demands, but in some special applications, the data rate needing transmission only has tens of Kb/s to tens of Mb/s, but it is the highest to the reliability requirement of transmission data.Such as power system is for the IEEE C37.94 standard of signal transmission, and definition speed is 2.048Mb/s, minimum can arrive 64kb/s.But in the face of such low rate high reliability transport demand, conventional SFP cannot be carried out transmitting, may lose some low-frequency information.
In currently existing scheme, some are had to use the backward compatible scheme to low rate of two-forty SFP module, the specific implementation of these schemes is as follows: use differential data input, output, AC couples, and the signal type of data is usually Pecl (Positive Emitter Coupled Logic positive emitter coupling logic level), CML (Current-Mode Logic current mode logic)；APC (control of the automatic power control automated power) circuit using transmitting terminal chip internal integrated is controlled launching power；The parameters of module is monitored and stores by Applied Digital diagnostic function chip and EEPROM (Electrically Erasable Programmable Read-Only Memory Electrically Erasable Read Only Memory).
And there is following defect in this backward compatible SFP module: 1, the signal type of general low-rate signal is all single-ended TTL, and transmitting terminal chip cannot be operated in fast state, in fact it could happen that output optical signal Duty Cycle Distortion；2, using high-speed transceiver chip, power consumption is bigger and relatively costly；3, power controls to be completed by the APC circuit of integrated chip internal, and owing to being high-speed applications, APC electronic feedback speed, low-frequency cut-off frequency is higher, there will be distorted signals when transmitting low-rate signal.
In another scheme existing, its pair is launched optical module and uses SFF encapsulation, it is impossible to support hot plug.
Utility model content
This utility model is to overcome the above-mentioned deficiency of prior art, it is provided that a kind of can be highly reliable transmission low-rate signal and support that hot-swappable low rate is double and launch SFP optical module.
In order to realize above-mentioned utility model purpose, the technical solution adopted in the utility model is:
A kind of low rate is double launches SFP optical module, including micro-control unit, identical two light emission modules, said two light emission module is all connected with described micro-control unit, and described light emission module includes power control unit, luminous power detector unit, light source drive, light source；
Described light source drive connects described light source, for driving described light source to go out light according to light source drive current；
Described luminous power detector unit connects described power control unit, described light source, described micro-control unit, for detecting the light power of described light source, and described light power is fed back to described power control unit；
Described power control unit connects described light source drive, described luminous power detector unit, for the feedback information sent according to described luminous power detector unit, controls light source drive and is sent to the driving size of current of light source, to adjust light emitting power；
Described micro-control unit is for monitoring the operating temperature of described light emission module, running voltage；
Described power control unit low-frequency cut-off frequency is less than the frequency of transmission signal.
Further, described power control unit low-frequency cut-off frequency is less than 32KHz.
Further, described light source drive, described luminous power detector unit are also connected with micro-control unit, and described micro-control unit is for gathering light source light power information and the light source drive current information of the transmission of described luminous power detector unit.
Further, the signal input part of described light emission module uses Transistor-Transistor Logic level signaling interface.
Further, any one during described light source is VCSEL, FP, DFB or LED.
Further, the Tx_fault pin of described optical module, Rate_select pin are separately arranged as the standby pin of said two light emission module transmitting terminal Data Input Interface.
Compared with prior art, the beneficial effects of the utility model
1, the double SFP optical module of launching of a kind of low rate of the present utility model by being set below transmitting the frequency of signal by power control unit low-frequency cut-off frequency, it is possible to ensure data rate at tens of Kb/s to tens of Mb/s time, transmit data reliably.
2, the double SFP optical module of launching of a kind of low rate of the present utility model uses Transistor-Transistor Logic level signaling interface by the signal input part at light emission module, circuit structure the most of the present utility model is simpler, the problem simultaneously overcoming optical signal Duty Cycle Distortion.
3, the double SFP optical module of launching of a kind of low rate of the present utility model is re-set as standby two paths of signals input pin to Tx_fault pin and the Rate_select pin of SFP pin, further improves the reliability of data transmission.
Accompanying drawing explanation
It it is the double module frame chart launching SFP optical module of the low rate in an embodiment of the present utility model shown in Fig. 1.
It it is the module pin definitions figure in an embodiment of the present utility model shown in Fig. 2.
Detailed description of the invention
Below in conjunction with detailed description of the invention, this utility model is described in further detail.But this should not being interpreted as, the scope of the above-mentioned theme of this utility model is only limitted to below example, and all technology realized based on this utility model content belong to scope of the present utility model.
Embodiment 1:
It it is the double module frame chart launching SFP optical module of the low rate in an embodiment of the present utility model shown in Fig. 1, including microcontroller, identical two light emission modules, said two light emission module is all connected with described micro-control unit, and described light emission module includes power control unit, luminous power detector unit, light source drive, light source；
Described light source drive connects described light source, for driving described light source to go out light according to light source drive current；
Described luminous power detector unit connects described power control unit, described light source, described micro-control unit, for detecting the light power of described light source, and described light power is fed back to described power control unit；
Described power control unit connects described light source drive, described luminous power detector unit, for the feedback information sent according to described luminous power detector unit, controls light source drive and is sent to the driving size of current of light source, to adjust light emitting power；
Described micro-control unit is for monitoring the operating temperature of described light emission module, running voltage；
Described power control unit low-frequency cut-off frequency is less than the frequency of transmission signal.
The double SFP optical module of launching of a kind of low rate of the present utility model by being set below transmitting the frequency of signal by power control unit low-frequency cut-off frequency, it is possible to ensure data rate at tens of Kb/s to tens of Mb/s time, transmit data reliably.
Secondly, traditional double optical modules of launching use SFF encapsulation, and this packaged type is not supported hot-swappable, and this utility model uses SFP to carry out module encapsulation, makes module possess hot-swappable function.
Further, described power control unit low-frequency cut-off frequency is less than 32KHz.
Power control unit low-frequency cut-off frequency is adjusted to less than 32KHz, this utility model can the signal of effective transmission speed 32KHz-80MHz, certainly, these data are the least, then can transmit the signal of more low rate reliably,
Further, described light source drive, described luminous power detector unit are also connected with micro-control unit, and described micro-control unit is for receiving light source light power information and the light source drive current information of the transmission of described luminous power detector unit.
Further, the signal input part of described light emission module uses Transistor-Transistor Logic level signaling interface.
In existing technology, module is by adding level shifted signal at host end, it is achieved single-ended TTL signal, but add circuit complexity, meanwhile, existing this scheme, its chip can not well support that low frequency signal transmits, the problem having Duty Cycle Distortion when carrying out low frequency signal modulation, demodulation.
The double SFP optical module of launching of a kind of low rate of the present utility model uses Transistor-Transistor Logic level signaling interface by the signal input part at light emission module, circuit structure the most of the present utility model is simpler, the problem simultaneously overcoming optical signal Duty Cycle Distortion, owing to being made without increasing extra level conversion, scheme cost of the present utility model is lower.
In a specific embodiment, transmitter module uses single ended input, signal level is TTL, being coupled to light source drive through DC, light source drive drives light source to send 0/1 signal, and the light power of light source is detected by luminous power detector unit, the result of detection is fed back to power control unit, and then controlling light source drive driving electric current, it is achieved light power regulation, maintenance light power stabilization function, the low-frequency cut-off frequency of this feedback circuit is less than 32KHz.Micro-control unit passes through I2C bus and external device communication, and the operating temperature of monitoring module, modular power source voltage, two-way transmitting terminal launch power, two-way transmitting terminal bias current simultaneously.Module possesses DDM function and the communication function of equipment and the software control function to module.In use, terminal unit by with the communicating of multiple modules, the work state information of acquisition modules that can be real-time, including transmitting power, light emission passage one and the bias current of light emission passage two, voltage value, the temperature of inside modules and module alerts and the warning information of light emission passage one and light emission passage two, so can find that abnormal module occurs in time.The control to module can be realized by software simultaneously, process in time there being abnormal module.Micro-control unit only realizes the monitoring effect to module parameter, if need not DDM function, can directly remove micro-control circuit part and not affecting the normal work of light emission module.
Further, any one during described light source is VCSEL, FP, DFB or LED.
Further, the Tx_fault pin of described optical module, Rate_select pin are separately arranged as the standby pin of said two light emission module transmitting terminal Data Input Interface.
In a specific embodiment, referring to Fig. 2, Fig. 2 is the pin definitions in a specific embodiment of the present utility model, pin in Fig. 2 is described in detail by table 1, pin of the present utility model definition originating data input TD1, TD2 use single-ended signal, wherein Pin13 and Pin18 is as two-way originating data input pin, Pin7 or Pin2 can be as standby two-way originating data input pin, and data type is TTL.As special applications product, compared with tradition SFP pin definitions, Pin2Tx_fault and Pin7Rate_select function need not, therefore this two foot is used as standby signal pins, according to design of the present utility model, the register definitions of modules A 2h is also required to revise accordingly on the basis of 8472 agreements, and concrete amendment adjusts referring to table 2.
Table 1
Table 2
Owing to this utility model is provided with a pair standby transmitting signal input pin, external equipment diversified design requirement can be met, realized the transmitting in two-channel independent source in the present embodiment by standby transmitting signal pins.
Definition of pin position of the present utility model meets MSA, can make standardized product, it would however also be possible to employ special definition of pin position, it is achieved with the multiplexed port of standard SFP product, be effectively improved FU area panel utilization rate.
The double SFP optical module of launching of a kind of low rate of the present utility model is re-set as standby two paths of signals input pin to Tx_fault pin and the Rate_select pin of SFP pin, further improves the reliability of data transmission.
Above in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail, but this utility model is not restricted to above-mentioned embodiment, in the case of without departing from the spirit and scope of claims hereof, those skilled in the art may be made that various amendment or remodeling.
Claims (6)
1. low rate double transmitting SFP optical module, it is characterized in that, including micro-control unit, identical two light emission modules, said two light emission module is all connected with described micro-control unit, and described light emission module includes power control unit, luminous power detector unit, light source drive, light source；
Described light source drive connects described light source, for driving described light source to go out light according to light source drive current；
Described luminous power detector unit connects described power control unit, described light source, described micro-control unit, for detecting the light power of described light source, and described light power is fed back to described power control unit；
Described power control unit connects described light source drive, described luminous power detector unit, for the feedback information sent according to described luminous power detector unit, controls light source drive and is sent to the driving size of current of light source, to adjust light emitting power；
Described micro-control unit is for monitoring the operating temperature of described light emission module, running voltage；
Described power control unit low-frequency cut-off frequency is less than the frequency of transmission signal.
A kind of low rate the most according to claim 1 is double launches SFP optical module, it is characterised in that described power control unit low-frequency cut-off frequency is less than 32KHz.
A kind of low rate the most according to claim 1 is double launches SFP optical module, it is characterized in that, described light source drive, described luminous power detector unit are also connected with micro-control unit, and described micro-control unit is for gathering light source light power information and the light source drive current information of the transmission of described luminous power detector unit.
A kind of low rate the most according to claim 1 is double launches SFP optical module, it is characterised in that the signal input part of described light emission module uses Transistor-Transistor Logic level signaling interface.
A kind of low rate the most according to claim 1 is double launches SFP optical module, it is characterised in that described light source is any one in VCSEL, FP, DFB or LED.
6. launch SFP optical module according to a kind of low rate described in any one of claim 1-5 is double, it is characterized in that, the Tx_fault pin of described optical module, Rate_select pin are separately arranged as the standby pin of said two light emission module transmitting terminal Data Input Interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620217167.8U CN205484931U (en) | 2016-03-21 | 2016-03-21 | Two transmission SFP optical modules of low rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620217167.8U CN205484931U (en) | 2016-03-21 | 2016-03-21 | Two transmission SFP optical modules of low rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205484931U true CN205484931U (en) | 2016-08-17 |
Family
ID=56654714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620217167.8U Withdrawn - After Issue CN205484931U (en) | 2016-03-21 | 2016-03-21 | Two transmission SFP optical modules of low rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205484931U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572821A (en) * | 2016-03-21 | 2016-05-11 | 四川新易盛通信技术有限公司 | Low-rate double-emission SFP optical module |
-
2016
- 2016-03-21 CN CN201620217167.8U patent/CN205484931U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572821A (en) * | 2016-03-21 | 2016-05-11 | 四川新易盛通信技术有限公司 | Low-rate double-emission SFP optical module |
| CN105572821B (en) * | 2016-03-21 | 2018-04-06 | 四川新易盛通信技术有限公司 | A kind of double transmitting SFP optical modules of low rate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20140156879A1 (en) | Active cable with indicators showing operating modes and linking status | |
| JP4687621B2 (en) | Communication module with switch function and communication device | |
| US8687966B2 (en) | Fiber optic transceiver module with optical diagnostic data output | |
| WO2021115454A1 (en) | Optical-to-electrical signal converter, optical drive processing and receiving module, and network interaction device | |
| CN105572821A (en) | Low-rate double-emission SFP optical module | |
| CN104301042A (en) | SFP double emitting optical module and optical communication system | |
| CN205430254U (en) | Transmission rate 32Kbps~80Mbps receives and dispatches integrative SFP optical module | |
| CN106559139A (en) | A kind of optical module | |
| EP3044620A1 (en) | Methods, circuits and optical cable assemblies for optical transmission of high-speed data and low-speed data | |
| CN205430255U (en) | Two transmission SFP optical modules of low rate DC -20Mbps | |
| CN101711076B (en) | DMX512 communication link and method thereof | |
| CN205484931U (en) | Two transmission SFP optical modules of low rate | |
| CN105610511B (en) | A kind of transmission rate 32Kbps~80Mbps transceiver SFP optical module | |
| US9497525B2 (en) | Optical engines and optical cable assemblies having electrical signal conditioning | |
| CN106877936B (en) | SFP28 optical module | |
| CN105610515A (en) | Low rate DC-20Mbps double-emission SFP optical module | |
| CN104158595B (en) | Processing method of power supply circuit for reducing optical fiber module power consumption in power equipment | |
| CN201577220U (en) | Sending-receiving buffer unit for DMX512 lamps | |
| CN103688478A (en) | Method for inhibiting PCIe noise output through optical fiber communication, device and communication nodes | |
| CN214704618U (en) | Serial port communication multiplexing circuit | |
| US12021346B2 (en) | Multi-module fiber laser capable of monitoring abnormalities of optical modules in real time | |
| CN102591219B (en) | Interface control circuit, method, all-fiber joint and all-fiber transmission line | |
| CN207625065U (en) | A kind of laser TEC devices and laser | |
| CN105846903A (en) | Low-speed rate DC-20Mbps receiving-transmitting integrated SFP optical module | |
| CN207543110U (en) | A kind of low speed optical module of embedded error code testing function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160817 Effective date of abandoning: 20180406 |
|
| AV01 | Patent right actively abandoned |