CN102723995A - Active light module controller - Google Patents
Active light module controller Download PDFInfo
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- CN102723995A CN102723995A CN2012102388328A CN201210238832A CN102723995A CN 102723995 A CN102723995 A CN 102723995A CN 2012102388328 A CN2012102388328 A CN 2012102388328A CN 201210238832 A CN201210238832 A CN 201210238832A CN 102723995 A CN102723995 A CN 102723995A
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Abstract
The invention discloses an active light module controller, which comprises a control unit, a laser driving chip, a laser diode unit and a photodiode unit, wherein the control unit is used for controlling the laser driving chip via a series data bus; the series data bus consists of a bidirectional data line and a clock line; the grounding ends of the control unit and the laser driving chip are respectively grounded; one end of the laser diode unit is electrically connected to the LD end of the laser driving chip, and the other end of the laser diode unit is electrically connected with the MD end of the laser driving chip; and one end of the photodiode unit is electrically connected to the PD end of the laser driving chip, and the other end of the photodiode unit is electrically connected to a DC power supply. According to the invention, the bidirectional data line and the clock line are electrically connected between the control unit and the laser driving chip, so that the occupied space is small, a circuit space and the quantity of chip tube pins are reduced, interference between the interconnection cost and the signal is reduced, and the integral stability is improved.
Description
Technical field
The present invention relates to technical field of optical fiber communication, especially relate to a kind of active optical module controller.
Background technology
Along with development communication technologies, intelligent Networks of Fiber Communications is constantly popularized, and the extensive application of fibre optic transmission equipment, and the active optical module operating rate of the core devices of optical fiber communication equipment is more and more faster encapsulates more and more forr a short time, and intelligent degree is increasingly high.Intelligent optical module controller requires fault monitoring (Tx_Fault) in the working temperature, operating voltage, biasing (Bias) electric current, emission luminous power, received optical power and operate as normal to optical module, and dropout operating states such as (LOS) is monitored in real time.
For monitoring and the diagnosis that realizes optical module, adopt special chip usually, like the special chip DS1856/DS1859 of MAXIM company.Shown in Figure 6, this type chip internal has functional modules such as analog to digital converter, digital regulation resistance and logical circuit, relates to the photoetching process of CMOS integrated technique, digital circuit device, and producting process difficulty is big; This type chip pin is many, and encapsulation is big, is unfavorable for the miniaturization of optical module; And cost of manufacture is high, is unfavorable for shortcomings such as promoting the use of of optical module.
Summary of the invention
The defective that The present invention be directed to the existence of above-mentioned background technology provides a kind of chip pin resource of having practiced thrift; Reduce the circuit board usable floor area; Reduce the risk of the small-signal phase mutual interference of analog to digital converter or digital to analog converter, improve the active optical module controller of resistance to overturning.
For realizing above-mentioned purpose; The invention discloses a kind of active optical module controller; It comprises control unit, laser driving chip, laser diode unit and photodiode unit; Be provided with serial data bus between said control unit and the said laser driving chip, said serial data bus comprises bidirectional data line and clock line, and said control unit is controlled said laser driving chip through serial data bus; Said control unit power input and said laser driving chip power input are electrically connected with DC power supply respectively, and said control unit earth terminal and said laser driving chip earth terminal be ground connection respectively; Said laser diode unit one end is electrically connected at the LD end of said laser driving chip, and the said laser diode unit other end is electrically connected at the MD end of said laser driving chip; Said photodiode unit one end is electrically connected at the PD end of said laser driving chip, and the photodiode unit other end is electrically connected at DC power supply.
Further; Said laser diode unit comprises light-emitting diode and photo-detector diode; Said light-emitting diode and photo-detector diode also connect; Said DC power supply is electrically connected between said light-emitting diode and the photo-detector diode, and said Light-Emitting Diode one end is electrically connected at the LD end of said laser driving chip, and said modulation diode one end is electrically connected at the MD end of said laser driving chip.
Further; Said control unit set inside has adjustable voltage temperature monitoring unit, can make things convenient for monitoring module supply voltage unit, can make things convenient for monitor optical module temperature unit and EEPROM; Report when control unit is provided with tolerance limit when voltage, temperature surpass, directly photodiode unit is carried out temperature-compensating after monitoring variations in temperature simultaneously.
Further, said photodiode unit comprises PIN diode, and said PIN diode one end is electrically connected at the PD end of said laser driving chip, and the PIN diode other end is electrically connected at DC power supply.
Further; Said photodiode unit comprises DC/DC unit and avalanche photodide; Said control unit is provided with the pulse width modulation end; Said DC/DC unit input and said pulse width modulation end electrically connect, and said DC/DC unit output and said avalanche photodide one end electrically connect, and the said avalanche photodide other end is electrically connected at the PD end of said laser driving chip.
Further; Said photodiode unit comprises digital regulation resistance, DC/DC unit and avalanche photodide; Said digital regulation resistance input is electrically connected at said bidirectional data line and clock line respectively; Said digital regulation resistance output and said DC/DC unit input electrically connect, and said DC/DC unit output and said avalanche photodide one end electrically connect, and the said avalanche photodide other end is electrically connected at the PD end of said laser driving chip.
Further; Said photodiode unit comprises digital to analog converter, DC/DC unit and avalanche photodide; Said digital to analog converter input is electrically connected at said bidirectional data line and clock line respectively; Said digital to analog converter output and said DC/DC unit input electrically connect, and said DC/DC unit output and said avalanche photodide one end electrically connect, and the said avalanche photodide other end is electrically connected at the PD end of said laser driving chip.
Further; Said photodiode unit comprises temperature conditioning unit, DC/DC unit and avalanche photodide; Said temperature conditioning unit comprises thermistor, shunt resistance and divider resistance; Said thermistor and shunt resistance parallel connection are provided with; Said thermistor one end electrically connects with said DC/DC unit input and divider resistance one end respectively, and the said divider resistance other end electrically connects with said DC/DC unit output and said avalanche photodide one end respectively, and the said avalanche photodide other end is electrically connected at the PD end of said laser driving chip.
In sum; A kind of active optical module controller of the present invention adopts bidirectional data line and clock line two-wire system to be electrically connected between control unit and the laser driving chip; Therefore occupation space is very little, has reduced the space of circuit board and the quantity of chip pin, has reduced interconnected cost; Reduce the risk of the small-signal phase mutual interference of analog to digital converter or digital to analog converter simultaneously, improve resistance to overturning.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present invention.
Fig. 2 is the structural representation of the another kind of embodiment of the present invention.
Fig. 3 is the structural representation of the third embodiment of the present invention.
Fig. 4 is the structural representation of the 4th kind of embodiment of the present invention.
Fig. 5 is the structural representation of the 5th kind of embodiment of the present invention.
Fig. 6 is the prior art constructions sketch map.
Embodiment
For further understanding characteristic of the present invention, technological means and the specific purposes that reached, function, the present invention is described in further detail below in conjunction with accompanying drawing and embodiment.
Extremely shown in Figure 5 like Fig. 1; A kind of active optical module controller of the present invention comprises control unit 10, laser driving chip 20, laser diode unit 30 and photodiode unit 40; Be provided with serial data bus 50 between said control unit 10 and the said laser driving chip 20; Said serial data bus 50 comprises bidirectional data line SDA and clock line SCL; Said control unit 10 is through the said laser driving chip 20 of serial data bus 50 controls; Said control unit 10 power inputs and said laser driving chip 20 power inputs are electrically connected with DC power supply VCC respectively, and said control unit 10 earth terminals and said laser driving chip 20 earth terminals are ground connection respectively.
Said control unit 10 set inside have adjustable voltage temperature monitoring unit, can make things convenient for monitoring module supply voltage unit, can make things convenient for monitor optical module temperature unit and EEPROM (EEPROM); When surpassing, voltage, temperature report when control unit 10 is provided with tolerance limit; Directly photodiode unit 40 is carried out temperature-compensating after monitoring variations in temperature simultaneously; Guarantee the consistency of photodiode unit 40 performance under different temperatures; EEPROM can be stored manufacturer, interface type, product ID and various other compensated informations, simultaneously easily to control unit 10 collect various monitoring parameters store and report.
Said laser diode unit 30 comprises light-emitting diode 32 and photo-detector diode 31; Said light-emitting diode 32 and photo-detector diode 31 also connect; Said DC power supply VCC is electrically connected between said light-emitting diode 32 and the photo-detector diode 31; Said Light-Emitting Diode 32 1 ends are electrically connected at the LD end of said laser driving chip 20, and said photo-detector diode 31 1 ends are electrically connected at the MD end of said laser driving chip 20.
Said photodiode unit 40 1 ends are electrically connected at the PD end of said laser driving chip 20, and photodiode unit 40 other ends are electrically connected at DC power supply VCC.
Embodiment one
As shown in Figure 1, said photodiode unit 40 comprises PIN diode 401, and said PIN diode 401 1 ends are electrically connected at the PD end of said laser driving chip 20, and PIN diode 401 other ends are electrically connected at DC power supply VCC.
Embodiment two
As shown in Figure 2; Said photodiode unit 40 comprises DC/DC unit 402 and avalanche photodide 403; Said control unit 10 is provided with the pulse width modulation end; Said DC/DC unit 402 inputs and said pulse width modulation end electrically connect, and said DC/DC unit 402 outputs and said avalanche photodide 403 1 ends electrically connect, and said avalanche photodide 403 other ends are electrically connected at the PD end of said laser driving chip 20; Said control unit 10 is exported different pulse width modulated (PWM) signal as required, to change the output voltage of DC/DC unit 402, makes avalanche photodide 403 be operated in best operating point.
Embodiment three
As shown in Figure 3; Said photodiode unit 40 comprises digital regulation resistance 403, DC/DC unit 404 and avalanche photodide 405; Said digital regulation resistance 403 inputs are electrically connected at said bidirectional data line SDA and clock line SCL respectively; Said digital regulation resistance 403 outputs and said DC/DC unit 404 inputs electrically connect; Said DC/DC unit 404 outputs and said avalanche photodide 405 1 ends electrically connect, and said avalanche photodide 405 other ends are electrically connected at the PD end of said laser driving chip 20; Said control unit 10 is through serial data bus 50 control figure potentiometers 403; To change the resistance value of digital regulation resistance 403; Digital regulation resistance 403 is connected in series with said DC/DC unit 404; Through changing the output voltage that digital regulation resistance 403 resistance change DC/DC unit 404, make avalanche photodide 405 be operated in best operating point.
Embodiment four
As shown in Figure 4; Said photodiode unit 40 comprises digital to analog converter 406, DC/DC unit 407 and avalanche photodide 408; Said digital to analog converter 406 inputs are electrically connected at said bidirectional data line SDA and clock line SCL respectively; Said digital to analog converter 406 outputs and said DC/DC unit 407 inputs electrically connect; Said DC/DC unit 407 outputs and said avalanche photodide 408 1 ends electrically connect, and said avalanche photodide 408 other ends are electrically connected at the PD end of said laser driving chip 20; Said control unit 10 is controlled digital to analog converters 406 through serial data bus 50, with the output of change digital to analog converter 406, and then the output voltage of change DC/DC unit 407, make avalanche photodide 408 be operated in best operating point.
Embodiment five
As shown in Figure 5; Said photodiode unit 40 comprises temperature conditioning unit 409, DC/DC unit 410 and avalanche photodide 411; Said temperature conditioning unit 409 comprises thermistor RT, shunt resistance R1 and divider resistance R2; Said thermistor RT and shunt resistance R1 parallel connection are provided with; Said thermistor RT one end electrically connects with said DC/DC unit 410 inputs and divider resistance R2 one end respectively, and the said divider resistance other end electrically connects with said DC/DC unit 410 outputs and said avalanche photodide 411 1 ends respectively, and said avalanche photodide 411 other ends are electrically connected at the PD end of said laser driving chip 20; Control unit 10 is set best avalanche photodide 411 bias voltages, and is carried out temperature compensation through temperature conditioning unit 409 through measuring the reverse voltage of avalanche photodide 411, makes avalanche photodide 411 be operated in best operating point.
When the present invention uses, the signal that serial data bus 50 every transmission are will produce a clock pulse; Wherein, the position signal is divided into three kinds: start bit (START), position of rest (STOP) and data bit.Start bit: when clock line SCL transmission high level signal, bidirectional data line SDA transmits a saltus step from high to low, has then produced a start bit.Position of rest: when clock line SCL transmission high level signal, bidirectional data line SDA transmits a saltus step from low to high, then produces a position of rest.During transfer of data; It is stable that data on the bidirectional data line sda line must keep in the high level period of clock pulse; Control unit 10 should read the level signal on the bidirectional data line SDA in this period, the high or low level state of the transmission signals of bidirectional data line SDA can only could change when clock line SCL transmission signals is low level.
In sum; A kind of active optical module controller of the present invention adopts bidirectional data line SDA and clock line SCL two-wire system to be electrically connected between control unit 10 and the laser driving chip 20; Therefore occupation space is very little, has reduced the space of circuit board and the quantity of chip pin, has reduced interconnected cost; Reduce the risk of the small-signal phase mutual interference of analog to digital converter or digital to analog converter simultaneously, improve resistance to overturning.
The above embodiment has only expressed one embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as limitation of the scope of the invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with accompanying claims.
Claims (8)
1. active optical module controller; It is characterized in that: comprise control unit, laser driving chip, laser diode unit and photodiode unit; Be provided with serial data bus between said control unit and the said laser driving chip; Said serial data bus comprises bidirectional data line and clock line; Said control unit is controlled said laser driving chip through serial data bus, and said control unit power input and said laser driving chip power input are electrically connected with DC power supply respectively, and said control unit earth terminal and said laser driving chip earth terminal be ground connection respectively; Said laser diode unit one end is electrically connected at the LD end of said laser driving chip, and the said laser diode unit other end is electrically connected at the MD end of said laser driving chip; Said photodiode unit one end is electrically connected at the PD end of said laser driving chip, and the photodiode unit other end is electrically connected at DC power supply.
2. a kind of active optical module controller according to claim 1; It is characterized in that: said laser diode unit comprises light-emitting diode and photo-detector diode; Said light-emitting diode and photo-detector diode also connect; Said DC power supply is electrically connected between said light-emitting diode and the photo-detector diode; Said Light-Emitting Diode one end is electrically connected at the LD end of said laser driving chip, and said modulation diode one end is electrically connected at the MD end of said laser driving chip.
3. a kind of active optical module controller according to claim 1; It is characterized in that: said control unit set inside has adjustable voltage temperature monitoring unit, can make things convenient for monitoring module supply voltage unit, can make things convenient for monitor optical module temperature unit and EEPROM; Report when control unit is provided with tolerance limit when voltage, temperature surpass, directly photodiode unit is carried out temperature-compensating after monitoring variations in temperature simultaneously.
4. a kind of active optical module controller according to claim 1; It is characterized in that: said photodiode unit comprises PIN diode; Said PIN diode one end is electrically connected at the PD end of said laser driving chip, and the PIN diode other end is electrically connected at DC power supply.
5. a kind of active optical module controller according to claim 1; It is characterized in that: said photodiode unit comprises DC/DC unit and avalanche photodide; Said control unit is provided with the pulse width modulation end; Said DC/DC unit input and said pulse width modulation end electrically connect, and said DC/DC unit output and said avalanche photodide one end electrically connect, and the said avalanche photodide other end is electrically connected at the PD end of said laser driving chip.
6. a kind of active optical module controller according to claim 1; It is characterized in that: said photodiode unit comprises digital regulation resistance, DC/DC unit and avalanche photodide; Said digital regulation resistance input is electrically connected at said bidirectional data line and clock line respectively; Said digital regulation resistance output and said DC/DC unit input electrically connect; Said DC/DC unit output and said avalanche photodide one end electrically connect, and the said avalanche photodide other end is electrically connected at the PD end of said laser driving chip.
7. a kind of active optical module controller according to claim 1; It is characterized in that: said photodiode unit comprises digital to analog converter, DC/DC unit and avalanche photodide; Said digital to analog converter input is electrically connected at said bidirectional data line and clock line respectively; Said digital to analog converter output and said DC/DC unit input electrically connect; Said DC/DC unit output and said avalanche photodide one end electrically connect, and the said avalanche photodide other end is electrically connected at the PD end of said laser driving chip.
8. a kind of active optical module controller according to claim 1; It is characterized in that: said photodiode unit comprises temperature conditioning unit, DC/DC unit and avalanche photodide; Said temperature conditioning unit comprises thermistor, shunt resistance and divider resistance; Said thermistor and shunt resistance parallel connection are provided with; Said thermistor one end electrically connects with said DC/DC unit input and divider resistance one end respectively, and the said divider resistance other end electrically connects with said DC/DC unit output and said avalanche photodide one end respectively, and the said avalanche photodide other end is electrically connected at the PD end of said laser driving chip.
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| CN201210238832.8A CN102723995B (en) | 2012-07-11 | 2012-07-11 | A kind of active light module controller |
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| CN106055505A (en) * | 2016-05-20 | 2016-10-26 | 青岛海信宽带多媒体技术有限公司 | Optical module and transmission method of data in optical module |
| CN103903651B (en) * | 2012-12-25 | 2017-02-15 | 上海华虹宏力半导体制造有限公司 | Double-line serial port build-in self-test circuit, and communication method thereof |
| CN107515369A (en) * | 2017-08-17 | 2017-12-26 | 北京中电华大电子设计有限责任公司 | A kind of education and correction for juvenile offenders pin test circuit |
| CN110460381A (en) * | 2019-08-12 | 2019-11-15 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102930877A (en) * | 2012-11-02 | 2013-02-13 | 东莞铭普光磁股份有限公司 | Digital monitoring system suitable for light module controller and implementation method of digital monitoring system |
| CN102930877B (en) * | 2012-11-02 | 2015-04-15 | 东莞铭普光磁股份有限公司 | Digital monitoring system suitable for light module controller and implementation method of digital monitoring system |
| CN103903651B (en) * | 2012-12-25 | 2017-02-15 | 上海华虹宏力半导体制造有限公司 | Double-line serial port build-in self-test circuit, and communication method thereof |
| CN106055505A (en) * | 2016-05-20 | 2016-10-26 | 青岛海信宽带多媒体技术有限公司 | Optical module and transmission method of data in optical module |
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| CN107515369A (en) * | 2017-08-17 | 2017-12-26 | 北京中电华大电子设计有限责任公司 | A kind of education and correction for juvenile offenders pin test circuit |
| CN110460381A (en) * | 2019-08-12 | 2019-11-15 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module |
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