CN1988423A - Multiple service light receiving module for digital regulation - Google Patents
Multiple service light receiving module for digital regulation Download PDFInfo
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- CN1988423A CN1988423A CN 200510135030 CN200510135030A CN1988423A CN 1988423 A CN1988423 A CN 1988423A CN 200510135030 CN200510135030 CN 200510135030 CN 200510135030 A CN200510135030 A CN 200510135030A CN 1988423 A CN1988423 A CN 1988423A
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- 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
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
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Abstract
This invention relates to a multi-service optical receiving module of digital adjustment including a photoelectric detector supply circuit, an operation amplifier, a voltage indicator, a data and a clock resuming circuit characterizing in also including a digital control potentiometer and an adjusting controller connected with said digital contol potentiometer, which at least includes a user operation interface, a logic operation unit, a memory and an interface connected to the potentiometer with one of the following digital potentiometers or their combination: a digital potentiometer connected with the supply circuit of the photodetector, a digital potentiometer connected with data and clock resuming circuit and a digital potentiometer connected with the operatioinal amplifier.
Description
Technical field
The present invention relates to the light delivery module in high speed optical fiber communication field, more specifically, relate to a kind of multi-service light receiving module.
Background technology
The main effect of the Optical Receivers in the high speed optical fiber communication is that the modulated light signal that will receive converts high-speed electrical signals to, realizes the regeneration and the shaping of high-speed electrical signals, and extracts line clock.Because the dispersion tolerance of Transmission Fibers and the influence of the factors such as nonlinear effect in the optical transmission system, present optical transmission system also can't be realized all-optical network, electricity/light, light/electricity conversion still play important effect in optical transmission system, Optical Receivers is exactly the function that realizes light/electricity conversion, is one of indispensable critical component of present optical transmission system.
Traditional multi-service light receiving module internal structure mainly is made of A, B, C, D, E, F, G, I several sections as shown in Figure 1, also comprises plurality of fixed resistance and several mechanical type adjustable potentiometer among the figure.Wherein A is the photodetector power supply circuits, if use PIN (Positive IntrinsicNegative photodiode, photodiode) photodetector, it then is the fixed voltage supply circuit, if adopt APD (Avalanche photodiode, avalanche photodide) photodetector, then the high voltage supply circuit that saves for Adjustable Output Voltage.B is a precision operational-amplifier, and C is the average received power voltage indicating section of Optical Receivers, in order to obtain suitable received optical power monitoring voltage value, needs to adjust the voltage amplification factor of precision operational-amplifier usually.D is a photodetector, is the Primary Component of realizing opto-electronic conversion, can be PIN or APD photodetector.E is the high-speed wideband amplifying circuit, and the ultra-weak electronic signal after opto-electronic conversion is amplified.F is data and clock recovery circuitry, recovers data signals transmitted and extract the high-speed synchronous clock from high-speed data-flow, wherein comprises to receive decision level adjustment circuit.G is and the single board interface circuit, inputs to multi-service light receiving module from the control signal of veneer, determines that it can receive correct signal.I is high-speed data and clock output interface circuit.
It is irrelevant with the present invention that other circuit of multi-service light receiving module such as LOS alarm threshold are adjusted circuit, APD device temperature compensating circuit, other power-supply circuit of Optical Receivers etc., no longer describes at this.
Traditional multi-service light receiving module circuit parameter adjustment all realizes by the mechanical type potentiometer.The multi-service light receiving module adjustable parameter is a lot, only illustrates the parameter of several keys.Adjustable potentiometer R1 is mainly used to adjust the reverse bias voltage of light receiving element among Fig. 1, makes the APD device be operated in optimal reverse bias voltage state, obtains best multiplication factor; Adjustable potentiometer R2 is mainly used to adjust the receiving terminal decision level, and the error rate of the signal data-signal that recovery is come out under the condition of certain Optical Signal To Noise Ratio of assurance receiving terminal is minimum; Adjustable potentiometer R3 is mainly used to regulate the gain of operational amplifier B, adjusts to receive average light power corresponding voltage value size, guarantees that this magnitude of voltage is linear change with input average light power size in the Optical Receivers dynamic range.R
SBe input photoelectric current inductive reactance, the photoelectric current that the APD receiving device is transformed converts voltage signal to and amplifies through follow-up amplifying circuit, obtains the voltage signal that linear direct ratio input average light power changes, and is used for monitoring input average light power size.
The principal character of traditional Optical Receivers is to adopt the method for regulating the mechanical type potentiometer to realize relevant important parameter adjustment in the optical module, play important effect in the optical transmission system in early days, but in digitizing technique very ripe today, still adopt the optical module of this method adjustment to have many disadvantages, comprising:
(1) is unfavorable for the large-scale production of optical module.This optical module needs to take the great amount of manpower resource in the production debug process, and each key parameter in the optical module all needed with screwdriver analog regulation fixed potential device one by one, thereby obtain best parameter value, this manual adjustment mode has increased production cost undoubtedly.
(2) unsteadiness of mechanical type potentiometer influence.The sliding end of mechanical type potentiometer is connected on the resistive element, when it when the length of element moves, resistance can change, in order to ensure its reliably working, in keeping life, sliding end must keep contacting with the good of resistive element.But owing to optical module in use usually owing to reasons such as transportation, vibration or operating ambient temperature variations, often cause the resistance of the mechanical type potentiometer that has regulated to take place to change even can lose efficacy, cause in the optical module relevant performance parameter drift-out optimum even can't operate as normal.
(3) optical module is safeguarded relatively difficulty, and product after-sales service personnel's professional standards and skills involved in the labour are had relatively high expectations.Product in use, because some transient cause causes the parameter drift-out optimum state of optical module to need to regulate, the attendant must know clearly the parameter of the pairing corresponding light module of each mechanical type potentiometer on the optical module circuit board, otherwise as easy as rolling off a log makeing mistakes, especially to using the many circuit boards of mechanical type potentiometer, be difficult to especially determine that the situation that causes the attendant to have no way of doing it has increased maintenance cost undoubtedly.
(4) be difficult to accomplish the online adjusting of non-interrupting service.The Optical Receivers that adopts the fixed potential device is under the condition that optical transmission system activates the service, need to regulate quite difficulty of relevant parameter, often need to bear very big technology and economic risk, particularly debug process causes real time business to interrupt possibly, brings bigger economic loss to telecom operators.
(5) optical module that adopts the mechanical type potentiometer to regulate can't be known the particular location of the potentiometer contact of being regulated, the parameter adjustment that is this optical module does not possess memory function, optical module needs repairing or some key parameters need do inching the time, require the work that the commissioning staff did almost to have nothing different, thereby efficient is extremely low with the required workload of bearing of parameter of regulating a new module.
In sum, there are a lot of problems in the important parameter that traditional multi-service light receiving module adopts the method for regulating the mechanical type potentiometer to regulate optical module, under the tide that digitizing technique have swepts the globe, the analog regulation technology that the mechanical type potentiometer is regulated in this employing will be replaced by digital regulated technology.
Summary of the invention
Technical problem to be solved by this invention provides the multi-service light receiving module that a kind of digitlization is regulated, and makes to the easy to adjust of potentiometer and its long term operation stability of raising and reliability.
In order to solve the problems of the technologies described above, the invention provides the multi-service light receiving module that a kind of digitlization is regulated, comprise the photodetector power supply circuits, operational amplifier, voltage indicator, data and clock recovery circuitry, it is characterized in that, also comprise digital current potential module and the conditioning controller that links to each other with described digital current potential module, this conditioning controller comprises a user interface at least, one arithmetic logic unit, one memory and one is connected to the interface of described digital current potential module, can set the resistance in the described digital current potential module, described digital current potential module comprises a kind of or combination in any in the following digital current potential unit:
The digital current potential unit that is connected with described photodetector power supply circuits is used to regulate the reverse bias voltage of Optical Receivers;
With the digital current potential unit that described data link to each other with clock recovery circuitry, the decision level that is used to regulate receiving terminal;
The digital current potential unit that links to each other with described operational amplifier is used to regulate the gain of this operational amplifier.
Further, above-mentioned multi-service light receiving module also can have following characteristics: also comprise nonvolatile memory in the described digital current potential module, be used for preserving the resistance of the digital current potential unit of digital current potential module.
Further, above-mentioned multi-service light receiving module also can have following characteristics: described digital current potential module is a digital control potentiometer, and described digital control unit is the digital regulation resistance in this CONTROLLED POTENTIAL device.
Further, above-mentioned multi-service light receiving module also can have following characteristics: also comprise an A/D converter in the described conditioning controller, the linearity reflection that is used to gather described voltage indicator output receives the magnitude of voltage of average light power, and be translated into digital signal, the arithmetic logic unit of described conditioning controller obtains receiving behind the average light power monitor value storage according to this digital signal or reports, and perhaps directly stores or report described digital signal.
Further, above-mentioned multi-service light receiving module also can have following characteristics: also comprise the I/O mouth in the described conditioning controller, be used to gather the digital alarm signal of reflection received signal size.
Further, above-mentioned multi-service light receiving module also can have following characteristics: the user interface of described conditioning controller be and veneer between interface circuit, be used to receive the instruction that veneer issues, at least comprise the instruction of inquiry and parameter configuration, after the conditioning controller fill order, report execution result by this interface circuit to veneer again.
Further, above-mentioned multi-service light receiving module also can have following characteristics: also comprise a latch that links to each other with described conditioning controller, data and clock recovery circuitry respectively, the rate configuration value that the described conditioning controller that is used for receiving issues latchs, and by outputing to data and clock recovery circuitry after the level conversion.
Further, above-mentioned multi-service light receiving module also can have following characteristics: described conditioning controller is realized with a single-chip minimum system.
Further, above-mentioned multi-service light receiving module also can have following characteristics: the arithmetic logic unit of described conditioning controller is after the order that receives the rate configuration that veneer issues, whether the speed of checking configuration is consistent with the Optical Receivers present rate, if it is inconsistent then carry out this order, this rate configuration value is outputed to described latch, if consistent then abandon the execution of this order.
Further, above-mentioned multi-service light receiving module also can have following characteristics: described memory stores has a kind of or combination in any in the following data: the coefficient of Optical Receivers type, light receiving element type, average received power simulation curve, the multi-service type that can receive, optical module date of manufacture, and producer's information.
Digitlization Optical Receivers of the present invention brings a lot of benefits owing to adopt digital control potentiometer to replace traditional mechanical type to adjust potentiometer.At first be that digital regulation resistance is easy to adjust, long service life, be not subjected to the influence of environment for use substantially, performance is more stable, helps improving Optical Receivers long term operation stability and reliability.
Further, because the method that adopts digitlization to regulate, improved the production efficiency of optical module greatly, producing the debugging workman needn't go to regulate each mechanical type potentiometer with screwdriver again, but can finish debugging by the operation that reads and writes data of computer, level professional technology to the workman requires to reduce greatly, as long as operand correctly.
Further, the multi-service light receiving module that adopts digitlization to adjust can be preserved potentiometer and regulate later information, makes fine adjustment if desired, as long as read original numerical value, and fine setting writes new numerical value and get final product on its basis, and is simple, conveniently.
Further, the inner integrated monolithic machine of optical module system, the intelligent level of optical module improves greatly, has not only realized optical module at the line service regulating power, can also improve the adaptive reception ability of Optical Receivers by the automatic adjustment of receiving terminal threshold value.
Further, the EEPROM in the multi-service light receiving module that digitlization is regulated has write down important informations such as the significant data, date of manufacture of optical module, is convenient to the large-scale production and the management of optical module.
Description of drawings
Fig. 1 is traditional multi-service light receiving module structure chart;
Fig. 2 is the structure chart of the multi-service light receiving module of embodiment of the invention digitlization adjusting;
Fig. 3 is a kind of cut-away view of digital control potentiometer;
Fig. 4 is the workflow diagram of conditioning controller operation in the multi-service light receiving module of the present invention
Fig. 5 is the structure chart of an application example of multi-service light receiving module of digitlization adjusting of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is further described.
Fig. 2 is the structure chart of the multi-service light receiving module of present embodiment digitlization adjusting.On the basis of traditional Optical Receivers high speed circuit, increase some digital-control circuits, comprised conditioning controller H, digital control potentiometer J and latch K.
Present embodiment adopts digital control potentiometer J to replace traditional mechanical type potentiometer, and digital control potentiometer J links to each other respectively with clock recovery circuitry F with data with photodetector power supply circuits A, operational amplifier B.Conditioning controller H links to each other with digital control potentiometer J, voltage indicator C, and is connected with clock recovery circuitry F with data by latch K.
Comprise following 3 kinds of digital regulation resistances among the digital control potentiometer J of present embodiment:
A with the digital regulation resistance that described photodetector power supply circuits are connected, is used to regulate the reverse bias voltage of Optical Receivers;
B, with the digital regulation resistance that described data link to each other with clock recovery circuitry, the decision level that is used to regulate receiving terminal;
C with the digital regulation resistance that described operational amplifier links to each other, is used to regulate the gain of this operational amplifier.
At present, industry has had many suppliers that the digital control potentiometer of different model and kind can be provided.Fig. 3 shows the example of digital control potentiometer J.Only show two 256 grades adjustable potentiometer A and B among the figure, two adjustable potentiometers all have centre tap.Company such as Maxim-IC, Xicor all can provide of this sort digital control potentiometer product.Also be provided with nonvolatile memory among this digital control potentiometer J, can guarantee not lose in the data that the inner single-chip microcomputer of Optical Receivers resets or Optical Receivers write after losing power supply for a certain reason originally, thereby make multi-service light receiving module after recovering normal running conditions, can not change the resistance size of potentiometer, guarantee that the Optical Receivers key parameter that has regulated can not change.
Latch K is used to receive the rate configuration value of conditioning controller H output, and the interface circuit between data and the clock receiving circuit F is realized level conversion, thereby the rate configuration of control data and clock receiving circuit F, determine the operating state of multi-service light receiving module, guarantee that multi-service light receiving module can correctly receive transmission signals.
In the present embodiment, conditioning controller H realizes with single-chip minimum system, at least comprise an arithmetic logic unit, A/D converter, D/A converter, memory (EEPROM), be connected to the I2C interface of veneer, be connected to the serial line interface of digital control potentiometer and receive the I/O interface of Optical Receivers digital quantity signal input.
The linearity reflection that A/D converter is used to gather from voltage indicator C output receives the magnitude of voltage (analog quantity) of average light power, and converts it into digital signal.
Memory cell is used to preserve the significant data of Optical Receivers, digital signal, rate configuration value, the alarm signal of A/D converter output during as work; Also store significant data information such as the coefficient of Optical Receivers type, light receiving element type, average received power simulation curve, the multi-service type that can receive, optical module date of manufacture, manufacturer, can be for the webmaster inquiry.
Serial line interface is used for the communication with digital control potentiometer J.
The I2C interface is used for the single-chip microcomputer of Optical Receivers place veneer and the single-chip microcomputer H communication of Optical Receivers inside, realizes the online adjusting or the rate configuration of Optical Receivers.
The I/O interface is used to gather the alarm signal (digital quantity) of reflection received signal size, as dropout (LOS) alarm signal, phase-locked loop losing lock (LOL) alarm signal etc.
The D/A converting unit is the function of Alternative digital potentiometer to a certain extent.If any demand, also can carry out the real-time control of some analog quantitys.
Arithmetic logic unit is the core of conditioning controller, in the present embodiment, has following controlled function at least:
(1) according to the address choice potentiometer of digital control potentiometer J built-in potential device, send the reading and writing order by serial line interface, change the size of inner each the potentiometer resistance value of digital control potentiometer J, make voltage in the circuit change and realize having in the Optical Receivers adjusting of related parameter.
(2) be used for after receiving the rate configuration order that veneer issues, judge that whether present rate is identical with the speed of configuration, when inequality, issues the rate configuration order to latch K.
The flow process of whole rate configuration may further comprise the steps:
Step 1, Optical Receivers receive the order of the rate configuration that veneer issues;
Step 2, Optical Receivers is checked present rate;
Step 3 judges whether the Optical Receivers present rate is identical with the speed that is provided with, if different execution in step five, otherwise would carry out next step;
Step 4 abandons order is set, and finishes.
Step 5, latch receive and latch behind the signal of single-chip microcomputer output and by outputing to data and clock recovery circuitry after the level conversion, carry out the setting of receiving velocity, and Configuration Values is write FLASH, finish.
(3) when veneer issues querying command, report the relevant parameter of its Optical Receivers that will inquire about.
(4) digital signal of A/D converting unit output is carried out data processing, obtain receiving comparatively accurately the average light power monitor value, and be stored in it in memory cell or report veneer.
The workflow of the conditioning controller operation in the multi-service light receiving module of present embodiment may further comprise the steps (please refer to Fig. 4):
After powering on and move, step 101, Optical Receivers carry out initialization (system, hello dog);
Step 102 is carried out the speed setting;
Step 103 has judged whether I
2The C interruptive command if execution in step 106 is arranged, otherwise continues to carry out;
Step 104, the collection of Optical Receivers internal performance, processing;
Step 105, the processing timed events (as, the dog that feeds of the normal operation of assurance program is handled functions such as LOL alarming processing), return step 103;
Step 106 is handled I
2The C message;
Step 107, step 103 is returned in event handling.
Fig. 5 is the structure chart of an application example of multi-service light receiving module of digitlization adjusting.The digital-control circuit that increases comprises single-chip minimum system, non-volatile digital control potentiometer and latch.
Digital control potentiometer links to each other with data recovery circuit with DC/DC booster circuit, operational amplifier and clock respectively, and the single-chip microcomputer of band EEPROM is by serial line interface and digital control potentiometer communication, and links to each other with operational amplifier.This is the structure that a kind of interior external bus separates; the potentiometer that single-chip microcomputer is regulated according to the address choice needs of digital regulation resistance; write-protect is opened; the numerical value of writing range in 0～255; can change the size of digital regulation resistance resistance, make voltage in the circuit change and realize having in the Optical Receivers adjusting of related parameter.Send instructions under the single-chip microcomputer on the other hand to latch, dispose the receiving velocity of multi-service light receiving module by the electric level interface circuit of latch and data and clock recovery circuitry.Single-chip microcomputer passes through I in addition
2The veneer communication at C bus and Optical Receivers place realizes the function that issues with the veneer control command of reporting of Optical Receivers significant data.C is the coupling capacitance of high-frequency signal among the figure.
In the example, single-chip microcomputer should with the MCU communication on the veneer, again with the inside modules digital regulation resistance.All adopt I
2C interface.In order to prevent I
2There is bus collision during the C communication, takes and the outside veneer communication way that communication separates with the internal digital potentiometer.With veneer I
2The C communication is an exterior I
2The C communication is inner I with the digital regulation resistance communication in like manner
2The C communication.Because the selected single-chip microcomputer of example has only an I
2C bus, therefore inner I
2C adopts two I/O mouth Simulation with I
2C is the serial line interface of embodiment.
Technical solutions according to the invention are implemented in the multi-service light receiving module of our independent research, obtain very obvious effects.Adopt the Optical Receivers debugging of this programme simple, convenient, shortened the debugging flow process greatly, improved the production efficiency of Optical Receivers.
The present invention can also do various conversion on the basis of the foregoing description.
For example digital regulation resistance only with photodetector power supply circuits, operational amplifier and data and clock recovery circuitry one of any link to each other or any two link to each other.The magnitude of voltage that latch perhaps is not set in device and/or linearity reflection is not received average light power is gathered, and only realizes the digitlization adjusting of multi-service light receiving module with digital control potentiometer and conditioning controller, also has basic technique effect.
And for example, in other embodiments, can realize digital regulated to current potential, promptly adopt digital control potentiometer to realize that just digital form regulates a kind of mode that replaces manual mode to regulate with the D/A chip that has non-volatile function.In certain embodiments, digital current potential is regulated and can also be realized with the D/A that carries in the single-chip microcomputer.On function, the chip or the module that in the literary composition these are had the digital regulation resistance identical functions are referred to as digital current potential unit, and the device that these digital current potential unit that comprise on the Optical Receivers are formed is called digital current potential module.Specifically on Optical Receivers, adopt which kind of mode also will consider from multiple combined factors such as the restriction of cost, physical space, desired function.
Claims (10)
1, the multi-service light receiving module that a kind of digitlization is regulated, comprise the photodetector power supply circuits, operational amplifier, voltage indicator, data and clock recovery circuitry, it is characterized in that, also comprise digital current potential module and the conditioning controller that links to each other with described digital current potential module, this conditioning controller comprises a user interface at least, one arithmetic logic unit, one memory and one is connected to the interface of described digital current potential module, can set the resistance in the described digital current potential module, described digital current potential module comprises a kind of or combination in any in the following digital current potential unit:
The digital current potential unit that is connected with described photodetector power supply circuits is used to regulate the reverse bias voltage of Optical Receivers;
With the digital current potential unit that described data link to each other with clock recovery circuitry, the decision level that is used to regulate receiving terminal;
The digital current potential unit that links to each other with described operational amplifier is used to regulate the gain of this operational amplifier.
2, multi-service light receiving module as claimed in claim 1 is characterized in that, also comprises nonvolatile memory in the described digital current potential module, is used for preserving the resistance of the digital current potential unit of digital current potential module.
3, multi-service light receiving module as claimed in claim 1 is characterized in that, described digital current potential module is a digital control potentiometer, and described digital control unit is the digital regulation resistance in this CONTROLLED POTENTIAL device.
4, multi-service light receiving module as claimed in claim 1, it is characterized in that, also comprise an A/D converter in the described conditioning controller, the linearity reflection that is used to gather described voltage indicator output receives the magnitude of voltage of average light power, and be translated into digital signal, the arithmetic logic unit of described conditioning controller obtains receiving behind the average light power monitor value storage according to this digital signal or reports, and perhaps directly stores or report described digital signal.
5, multi-service light receiving module as claimed in claim 1 is characterized in that, also comprises the I/O mouth in the described conditioning controller, is used to gather the digital alarm signal of reflection received signal size.
6, multi-service light receiving module as claimed in claim 1, it is characterized in that, the user interface of described conditioning controller be and veneer between interface circuit, be used to receive the instruction that veneer issues, at least comprise the instruction of inquiry and parameter configuration, after the conditioning controller fill order, report execution result by this interface circuit to veneer again.
7, multi-service light receiving module as claimed in claim 1, it is characterized in that, also comprise a latch that links to each other with described conditioning controller, data and clock recovery circuitry respectively, the rate configuration value that the described conditioning controller that is used for receiving issues latchs, and by outputing to data and clock recovery circuitry after the level conversion.
8, multi-service light receiving module as claimed in claim 1 is characterized in that, described conditioning controller is realized with a single-chip minimum system.
9, multi-service light receiving module as claimed in claim 7, it is characterized in that, the arithmetic logic unit of described conditioning controller is after the order that receives the rate configuration that veneer issues, whether the speed of checking configuration is consistent with the Optical Receivers present rate, if it is inconsistent then carry out this order, this rate configuration value is outputed to described latch, if consistent then abandon the execution of this order.
10, multi-service light receiving module as claimed in claim 1 is characterized in that, digital signal, rate configuration value, the alarm signal of A/D converter output when described memory is used to preserve work; Also store a kind of or combination in any in the following data: the coefficient of Optical Receivers type, light receiving element type, average received power simulation curve, the multi-service type that can receive, optical module date of manufacture, and producer's information.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510135030 CN1988423A (en) | 2005-12-23 | 2005-12-23 | Multiple service light receiving module for digital regulation |
| CN200680030668.4A CN101248600A (en) | 2005-12-23 | 2006-05-23 | Digital-regulation multi-service light receiving module |
| PCT/CN2006/001067 WO2007071131A1 (en) | 2005-12-23 | 2006-05-23 | A digital adjusted optical receiving module of multi-service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510135030 CN1988423A (en) | 2005-12-23 | 2005-12-23 | Multiple service light receiving module for digital regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1988423A true CN1988423A (en) | 2007-06-27 |
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ID=38185071
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510135030 Pending CN1988423A (en) | 2005-12-23 | 2005-12-23 | Multiple service light receiving module for digital regulation |
| CN200680030668.4A Pending CN101248600A (en) | 2005-12-23 | 2006-05-23 | Digital-regulation multi-service light receiving module |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200680030668.4A Pending CN101248600A (en) | 2005-12-23 | 2006-05-23 | Digital-regulation multi-service light receiving module |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN1988423A (en) |
| WO (1) | WO2007071131A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105450297A (en) * | 2015-12-30 | 2016-03-30 | 桂林创研科技有限公司 | Intelligent optical power collection system |
| CN114034918A (en) * | 2021-11-16 | 2022-02-11 | 广东利元亨智能装备股份有限公司 | Photoelectric detection value detection circuit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1192520C (en) * | 2002-01-30 | 2005-03-09 | 华为技术有限公司 | Digital regulated light transmission module and regulating method thereof |
| CN1192521C (en) * | 2002-03-08 | 2005-03-09 | 华为技术有限公司 | Digital regulated light receiving module and its regulating method |
| CN1585306A (en) * | 2004-05-31 | 2005-02-23 | 成都网动光电子技术有限公司 | Light transmitting module and related light receiving module |
-
2005
- 2005-12-23 CN CN 200510135030 patent/CN1988423A/en active Pending
-
2006
- 2006-05-23 WO PCT/CN2006/001067 patent/WO2007071131A1/en active Application Filing
- 2006-05-23 CN CN200680030668.4A patent/CN101248600A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105450297A (en) * | 2015-12-30 | 2016-03-30 | 桂林创研科技有限公司 | Intelligent optical power collection system |
| CN114034918A (en) * | 2021-11-16 | 2022-02-11 | 广东利元亨智能装备股份有限公司 | Photoelectric detection value detection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101248600A (en) | 2008-08-20 |
| WO2007071131A1 (en) | 2007-06-28 |
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