CN101527599A - Method for measuring burst mode light power and device thereof - Google Patents
Method for measuring burst mode light power and device thereof Download PDFInfo
- Publication number
- CN101527599A CN101527599A CN200910058751A CN200910058751A CN101527599A CN 101527599 A CN101527599 A CN 101527599A CN 200910058751 A CN200910058751 A CN 200910058751A CN 200910058751 A CN200910058751 A CN 200910058751A CN 101527599 A CN101527599 A CN 101527599A
- Authority
- CN
- China
- Prior art keywords
- line terminal
- optical line
- system host
- holding unit
- sample holding
- 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.)
- Pending
Links
Images
Landscapes
- Optical Communication System (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses a method for measuring burst mode light power and a device thereof. A photodetector receives an optical signal transmitted by an optical network terminal and generates photocurrent; mirror current source generates mirror current; the mirror current is converted into a voltage signal in an amplification way and transmitted to a sample holding unit; a system hoist controls the sample holding unit at sampling mode; when the voltage signal is stable, the system hoist controls the sample holding unit at hold mode and controls an analog-digital conversion unit to convert the voltage signal into digital quantity; and a microcontroller obtains corresponding light power magnitude after receiving the digital quantity according to mapping relationship, and outputs the light power magnitude to the system hoist by a two-wire serial bus (I<2>C). By adopting the technical scheme, light signal power with hundreds of nanoseconds of length can be measured without expensive high speed device, and lower energy consumption can be realized while reducing cost.
Description
Technical field
The present invention relates to the optical communication technique field, relate in particular to a kind of method for measuring burst mode light power and device.
Technical background
EPON is a bit to multipoint system, an optical line terminal (OLT) is connected by tree-like optical fiber link with a plurality of Optical Network Terminal (ONT), not only share optical fiber link resource partly, shared optical line terminal (OLT) cost, meanwhile because EPON does not need photoelectricity relaying or signal processing midway, therefore it is low to have the networking cost, safeguards simple advantage.
Aspect network technology, the up direction in the EPON (PON), the transfer of data from each Optical Network Terminal (ONT) to optical line terminal (OLT) adopts the mode of time division multiple access (TDMA), also is the transmission of burst packet.EPON (PON) system is owing to different, the optical link state difference of position difference, distance of each Optical Network Terminal, each Optical Network Terminal optical signal magnitude that arrives optical line terminal differs, and the receiving unit that requires optical line terminal is burst type, high dynamic range.At down direction, the signal that optical line terminal (OLT) sends is that broadcast type is issued all a plurality of Optical Network Terminal (ONT) (single-point sends, and multiple spot receives), and each user needs therefrom to take out to issue the data of oneself.
Optical line terminal (OLT) equipment can be divided into optical-electric module and two parts of system host, and optical-electric module is finished the conversion of photosignal, and the monitoring and the alarm of photoelectric properties are provided simultaneously, comprises the burst luminous power size that receives.Be similar to the point-to-multi-point system that XPON adopts Time Division Multiplexing, the upstream data of light network terminal is operated under the burst mode, because the position difference of light network terminal, so usually need the luminous power of the real-time monitor optical network terminal of the optical-electric module of optical line terminal (ONT) burst, and according to the abnormal conditions reporting system main frame of monitoring.Because the luminous time slot of Optical Network Terminal (ONT) is distributed by optical line terminal (OLT), the shortest fluorescent lifetime hundreds of nanoseconds (such as GEPON 810ns, GPON 410ns), this special working method has determined optical line terminal (OLT) module, must use a kind of measuring light power circuit of burst, time of hundreds of nanoseconds with the interior optical power value that obtains burst.Meanwhile,, must be mapped with different Optical Network Terminal (ONT) testing the burst luminous power like this according to the different time-gap Time Division Multiplexing channel that distributes at the light signal of a plurality of Optical Network Terminal of optical line terminal one side (ONT) burst transmissions.And optical line terminal (OLT) optical-electric module generally only has twin wire serial bus interface (I
2C), twin wire serial bus interface (I
2C) reading speed is slow (generally supporting two kinds of clock frequencies of 100K and 400KHZ), and how the OLT system main frame obtains the data that optical-electric module measures, and also is the problem that needs solution.
The measuring equipment of safeguarding of XPON network also needs to measure the optical signal power of receiving the Optical Network Terminal burst transmissions at optical line terminal one side joint.Be similar to the working method of optical network terminal and optical line terminal optical-electric module, the equipment of such burst measuring light power also needs to set up the handshake mechanism with the optical line terminal main frame, the mark of the photometry network terminal is treated in realization, and realizes the data-interface function.
In existing technology, the logarithmic amplifier of the employing current-voltage type that has carries out the technical scheme of burst sampling, but because the response time of current-voltage type logarithmic amplifier long (several microseconds are to the hundreds of microsecond), even use the mode of dummy load also to be difficult to reach hundreds of nanoseconds, be difficult to satisfy actual testing requirement.
The technical scheme that has adopts the corresponding proportional aanalogvoltage with luminous power of pin output of an optical-electric module, obtain the luminous power data by the flash analog/digital converter in the system host, not only the signal of cost height but also simulation output is interfered than length at the PCB upward wiring easily owing to amplitude is little.
Also have by differential signal and produce burst detection signal (Burst_Detect), produce the control timing technical scheme that luminous power detects that happens suddenly by inner timing sequence generating circuit again, but owing to can't realize the differentiation of a plurality of Optical Network Terminal, so this technical scheme can be applied to use near a side of optical network unit (ONT) at optical branching device in the hand-hold type burst luminous power checkout equipment.Also be difficult to solve the hand-hold type burst luminous signal power measurement of optical line terminal (OLT) optical-electric module burst luminous signal power measurement and close optical line terminal (OLT) side at present effectively.
Summary of the invention
A kind of method for measuring burst mode light power and device that the present invention proposes can be measured the optical signal power of hundreds of nanosecond length, and do not use expensive high speed device, have realized low-power consumption when reducing cost.
Above-mentioned purpose of the present invention is achieved through the following technical solutions,
A kind of method for measuring burst mode light power may further comprise the steps:
A, photodetector receive the light signal of Optical Network Terminal emission, and produce photoelectric current;
B, produce and the proportional image current of average light electric current by mirror current source;
C, image current amplified be transformed into voltage signal;
D, described voltage signal send to sample holding unit;
The system host of E, optical line terminal produces the control triggering signal, and the control sample holding unit is in sample states;
F, after described voltage signal is stable, the system host of described optical line terminal produces the control triggering signal, the control sample holding unit is in hold mode, and the system host of described optical line terminal produces the control triggering signal, and the control AD conversion unit will convert digital quantity to from the voltage signal that described sample holding unit receives;
After G, microcontroller are received described digital quantity,, obtain corresponding luminous power numerical value, and export to the system host of described optical line terminal according to mapping relations.
Further comprising the steps of among the step G:
Described luminous power value storage to memory cell, and is exported to the system host of described optical line terminal by the twin wire universal serial bus.
Further comprising the steps of:
The system host of described optical line terminal is that described Optical Network Terminal is distributed time slot according to Optical Network Terminal login situation;
The system host of described optical line terminal is determined Optical Network Terminal to be measured, produces the control triggering signal after its place time slot begins the back delay predetermined time;
The Optical Network Terminal luminous power value storage to be measured that microcontroller will obtain is to corresponding memory cell;
After described Optical Network Terminal luminous power numerical value to be measured outputed to the system host of described optical line terminal, the system host of described optical line terminal began to control next Optical Network Terminal measuring light power.
When the system host generation control triggering signal of described optical line terminal was low level, sample holding unit was in sample states; When the system host generation control triggering signal of described optical line terminal was high level, sample holding unit was in hold mode.
A kind of burst mode light power measurement mechanism, comprise photodetector, the photodetector power supply, mirror current source, amplifying unit, sample holding unit, AD conversion unit and microcontroller, described photodetector is connected respectively with described mirror current source with signal processing unit in the optical line terminal, described mirror current source also is connected with described amplifying unit with described photodetector power supply respectively, described amplifying unit, sample holding unit, AD conversion unit is connected successively with microcontroller, described sample holding unit also is connected with the system host of described optical line terminal respectively with described AD conversion unit, described microcontroller is connected with the system host of described optical line terminal by the twin wire universal serial bus, wherein
Described photodetector is used to receive the light signal that described signal processing unit is sent, and the generation photoelectric current sends to described mirror current source;
Described photodetector power supply is used to described photodetector that direct current biasing is provided;
Described mirror current source, the average light electric current that is used for corresponding described photodetector produces image current pro rata;
Described amplifying unit is used for described image current is transformed into voltage signal, and delivers to described sample holding unit;
Described sample holding unit is used for described voltage signal being kept getting off under the control triggering signal effect of the system host of described optical line terminal;
Described AD conversion unit is used for described voltage signal being carried out analog-to-digital conversion, and the digital quantity of described voltage signal being sent to described microcontroller under the control triggering signal effect of the system host of described optical line terminal;
Described microcontroller is used for according to mapping relations, converts the digital quantity of described voltage signal the luminous power numerical value of correspondence to, and exports to the system host of described optical line terminal by described twin wire universal serial bus.
Described microcontroller also comprises memory cell, and described memory cell is used to store described luminous power numerical value.
Described photodetector is a photodiode, and described photodetector power supply is a DC power supply.
Described photodetector is an avalanche photodide, described photodetector power supply be can temperature-compensating the DC-to-DC booster power.
Adopted technical scheme of the present invention, by system host control triggering signal (RSSI_Trigger) and twin wire universal serial bus (I
2C) sequencing control, the mark of test and the correspondence of test result have been realized, sample holding unit and AD conversion unit are under the control of control triggering signal (RSSI_Trigger) simultaneously, adopt holding unit that the transient signal of burst is kept getting off, greatly reduce the follow-up sampling and the rate request of microcontroller, realized hundreds of nanosecond build-in test burst luminous powers.
Description of drawings
Fig. 1 is an optical line terminal structural representation in the specific embodiment of the invention.
Fig. 2 is that burst mode light power is measured flow chart in the specific embodiment of the invention.
Fig. 3 is the timing waveform that requires in the specific embodiment of the invention.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is an optical line terminal structural representation in the specific embodiment of the invention.As shown in Figure 1, optical line terminal comprises photodetector power supply 101, mirror current source 102, photodetector 103, signal processing unit 104, amplifying unit 105, sample holding unit 106, AD conversion unit 107, microcontroller 108 and OLT system main frame 109.
Photodetector is connected respectively with mirror current source with signal processing unit in the optical line terminal, mirror current source also is connected with amplifying unit with the photodetector power supply respectively, amplifying unit, sample holding unit, AD conversion unit and microcontroller are connected successively, sample holding unit also is connected with the OLT system main frame respectively with AD conversion unit, microcontroller is connected with the system host of optical line terminal by the twin wire universal serial bus, and microcontroller is connected with amplifying unit.
The photodetector power supply provides direct current biasing for photodetector, the light signal that photodetector received signal processing unit is sent, and the generation photoelectric current sends to mirror current source, mirror current source produces corresponding proportional image current with the average light electric current, image current is delivered to and is used for detecting burst luminous power size in the luminous power burst measuring circuit, luminous power burst measuring circuit is by amplifying unit, sample holding unit and AD conversion unit constitute, amplifying unit becomes voltage signal with the image current signal transition, and be sent to system host and trigger the sample holding unit that control signal (RSSI_Trigger) is connected, sample holding unit is under the control of the triggering control signal (RSSI_Trigger) of system host, be introduced into sample phase, after stable, enter into the sampling maintenance stage with the proportional voltage signal of burst luminous power, trigger analog to digital conversion circuit simultaneously and carry out analog-to-digital conversion, analog-to-digital result delivers in the microcontroller, microcontroller carries out computing and maps out the burst optical power value, and leave in the memory cell of microcontroller, the waiting system main frame is by twin wire universal serial bus (I
2C) interface reads.
Photodetector can be photodiode (PIN) or avalanche photo diode (APD), and when photodetector was photodiode (PIN), corresponding photodetector power supply can be direct voltage source; When photodetector was avalanche photo diode (APD), corresponding photodetector power supply was the DC-to-DC booster power of band temperature compensation function.
In an embodiment, photodetector has partly been selected avalanche photo diode (APD) for use, it is the chip that boosts (DC-DCbooster) of MAX5026 that corresponding photodetector power supply has been selected the model of DC-to-DC for use, the D/A converting circuit (DAC) of microcontroller MCU Aduc7020 inside or pulse-width modulation circuit (PWM), the boost avalanche photo diode (APD) bias voltage value of chip output of decision, feedback according to microcontroller (MCU) temperature inside transducer, D/A converting circuit or pulse-width modulation circuit are adjusted the temperature-compensating that output voltage is realized avalanche photodide, guarantee that the responsiveness of the optical device in the circuit working temperature range keeps constant.
The image current of mirror current source output is a voltage signal by electric resistance changing, and by AD8029 amplifier increase driving force, deliver to sample holding unit, after treating that corresponding proportional voltage with the luminous power that happens suddenly is stable, sample holding unit is under the control of OLT system host computer control triggering signal (RSSI_Trigger), enter the maintenance stage, while trigger mode number conversion cell operation, analog-to-digital conversion result is through the microcontroller calculation process, the optical power value that measures is put in the corresponding memory cell, and the waiting system main frame is initiated two-wire serial bus operation (I
2C) read.
Fig. 2 is that burst mode light power is measured flow chart in the specific embodiment of the invention.As shown in Figure 2, burst mode light power measurement flow process may further comprise the steps:
After step 208, microcontroller are received digital quantity,, obtain corresponding luminous power numerical value according to mapping relations.
The Optical Network Terminal luminous power value storage to be measured that step 209, microcontroller will obtain is to corresponding memory cell.
The system host of step 210, optical line terminal reads luminous power numerical value by the twin wire universal serial bus.
Corresponding one by one in order to guarantee between luminous power numerical value and the Optical Network Terminal, each two-wire system universal serial bus operation (I
2C) must be after microcontroller MCU conversion be finished luminous power numerical value write storage unit, before changing, finishes the control triggering signal state next time.Fig. 3 is the timing waveform that requires in the specific embodiment of the invention.As shown in Figure 3, receive the light signal of Optical Network Terminal burst transmissions when photodetector, luminous power burst measuring circuit will be converted to the voltage signal that can be changed by analog to digital converter to the luminous power of burst, this moment, the OLT system main frame was a low level with retentive control triggering signal (RSSI_Trigger), made sample holding unit be in sample phase.
The voltage signal V_MON that treats the output of luminous power burst measuring circuit reaches stable state, the sample holding unit sampling is finished, the system host of optical line terminal will be controlled triggering signal (RSSI_Trigger) and be changed to high level, sample holding unit enters the sampling hold mode, luminous power burst measuring circuit output V_MON will keep stable state no matter whether to have or not at this moment light signal, owing to have sample holding unit, can allow the optical line terminal optical-electric module to select the lower modulus switching device of low price operating rate.Be changed between high period in control triggering signal (RSSI_Trigger), the analog to digital conversion circuit testing circuit output V_MON signal transition that will happen suddenly becomes digital quantity, and in microcontroller (MCU), finish mapping relations, convert corresponding luminous power numerical value to, be stored in the corresponding memory cell, in this process, forbid two-wire system universal serial bus (I
2C) operation.After analog-to-digital conversion is finished, allow the optical line terminal main frame to initiate two-wire system universal serial bus (I
2C) burst measuring light power result is read in operation.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (8)
1. a method for measuring burst mode light power is characterized in that, may further comprise the steps:
A, photodetector receive the light signal of Optical Network Terminal emission, and produce photoelectric current;
B, produce and the proportional image current of average light electric current by mirror current source;
C, image current amplified be transformed into voltage signal;
D, described voltage signal send to sample holding unit;
The system host of E, optical line terminal produces the control triggering signal, and the control sample holding unit is in sample states;
F, after described voltage signal is stable, the system host of described optical line terminal produces the control triggering signal, the control sample holding unit is in hold mode, and the system host of described optical line terminal produces the control triggering signal, and the control AD conversion unit will convert digital quantity to from the voltage signal that described sample holding unit receives;
After G, microcontroller are received described digital quantity,, obtain corresponding luminous power numerical value, and export to the system host of described optical line terminal according to mapping relations.
2. a kind of method for measuring burst mode light power according to claim 1 is characterized in that, and is further comprising the steps of among the step G:
Described luminous power value storage to memory cell, and is exported to the system host of described optical line terminal by the twin wire universal serial bus.
3. a kind of method for measuring burst mode light power according to claim 2 is characterized in that, and is further comprising the steps of:
The system host of described optical line terminal is that described Optical Network Terminal is distributed time slot according to Optical Network Terminal login situation;
The system host of described optical line terminal is determined Optical Network Terminal to be measured, produces the control triggering signal after its place time slot begins the back delay predetermined time;
The Optical Network Terminal luminous power value storage to be measured that microcontroller will obtain is to corresponding memory cell;
After described Optical Network Terminal luminous power numerical value to be measured outputed to the system host of described optical line terminal, the system host of described optical line terminal began to control next Optical Network Terminal measuring light power.
4. a kind of method for measuring burst mode light power according to claim 1 is characterized in that, when the system host generation control triggering signal of described optical line terminal was low level, sample holding unit was in sample states; When the system host generation control triggering signal of described optical line terminal was high level, sample holding unit was in hold mode.
5. burst mode light power measurement mechanism, it is characterized in that, comprise photodetector, the photodetector power supply, mirror current source, amplifying unit, sample holding unit, AD conversion unit and microcontroller, described photodetector is connected respectively with described mirror current source with signal processing unit in the optical line terminal, described mirror current source also is connected with described amplifying unit with described photodetector power supply respectively, described amplifying unit, sample holding unit, AD conversion unit is connected successively with microcontroller, described sample holding unit also is connected with the system host of described optical line terminal respectively with described AD conversion unit, described microcontroller is connected with the system host of described optical line terminal by the twin wire universal serial bus, wherein
Described photodetector is used to receive the light signal that described signal processing unit is sent, and the generation photoelectric current sends to described mirror current source;
Described photodetector power supply is used to described photodetector that direct current biasing is provided;
Described mirror current source, the average light electric current that is used for corresponding described photodetector produces image current pro rata;
Described amplifying unit is used for described image current is transformed into voltage signal, and delivers to described sample holding unit;
Described sample holding unit is used for described voltage signal being kept getting off under the control triggering signal effect of the system host of described optical line terminal;
Described AD conversion unit is used for described voltage signal being carried out analog-to-digital conversion, and the digital quantity of described voltage signal being sent to described microcontroller under the control triggering signal effect of the system host of described optical line terminal;
Described microcontroller is used for according to mapping relations, converts the digital quantity of described voltage signal the luminous power numerical value of correspondence to, and exports to the system host of described optical line terminal by described twin wire universal serial bus.
6. a kind of burst mode light power measurement mechanism according to claim 5 is characterized in that described microcontroller also comprises memory cell, and described memory cell is used to store described luminous power numerical value.
7. a kind of burst mode light power measurement mechanism according to claim 5 is characterized in that described photodetector is a photodiode, and described photodetector power supply is a DC power supply.
8. a kind of burst mode light power measurement mechanism according to claim 5 is characterized in that described photodetector is an avalanche photodide, described photodetector power supply be can temperature-compensating the DC-to-DC booster power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910058751A CN101527599A (en) | 2009-03-31 | 2009-03-31 | Method for measuring burst mode light power and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910058751A CN101527599A (en) | 2009-03-31 | 2009-03-31 | Method for measuring burst mode light power and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101527599A true CN101527599A (en) | 2009-09-09 |
Family
ID=41095316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910058751A Pending CN101527599A (en) | 2009-03-31 | 2009-03-31 | Method for measuring burst mode light power and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101527599A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010142140A1 (en) * | 2009-06-11 | 2010-12-16 | 青岛海信宽带多媒体技术有限公司 | Optical line terminal |
| CN102281101A (en) * | 2011-06-29 | 2011-12-14 | 成都优博创技术有限公司 | Method and device for timely monitoring and maintaining emission light power in burst mode |
| CN102324899A (en) * | 2011-08-24 | 2012-01-18 | 成都优博创技术有限公司 | Transresistance amplifier with received signal strength indication (RSSI) function |
| CN102427388A (en) * | 2011-12-08 | 2012-04-25 | 深圳市共进电子股份有限公司 | Reset current compensation type sudden receiving optical power monitor |
| CN102661788A (en) * | 2012-05-30 | 2012-09-12 | 上海奥通激光技术有限公司 | Laser energy detector |
| CN102735335A (en) * | 2012-07-02 | 2012-10-17 | 上海市共进通信技术有限公司 | Device for realizing optical power detection in optical fiber network |
| CN102780525A (en) * | 2011-05-09 | 2012-11-14 | 深圳新飞通光电子技术有限公司 | Burst received optical power detection device and method thereof |
| CN102857298A (en) * | 2012-04-25 | 2013-01-02 | 索尔思光电（成都）有限公司 | Circuit and method for monitoring power parameter in optical module |
| CN103188012A (en) * | 2011-12-28 | 2013-07-03 | 深圳新飞通光电子技术有限公司 | Optical power detection circuit for OLT module |
| CN103763023A (en) * | 2014-01-22 | 2014-04-30 | 桂林聚联科技有限公司 | ONU state tester for passive optical network test |
| CN106712844A (en) * | 2016-12-15 | 2017-05-24 | 武汉电信器件有限公司 | Method for extracting 100GEMLTOSA optical power report without integrated PD |
| WO2018058523A1 (en) * | 2016-09-30 | 2018-04-05 | 华为技术有限公司 | Signal processing apparatus, optical line terminal, and communication system |
| CN108833869A (en) * | 2018-07-27 | 2018-11-16 | 浙江传媒学院 | A kind of changeable burst optical transmission circuit for cable TV network data feedback channel |
| CN112737672A (en) * | 2020-12-21 | 2021-04-30 | 成都储翰科技股份有限公司 | Received power intensity detection circuit for burst light receiver |
| CN118010697A (en) * | 2024-04-08 | 2024-05-10 | 泉州师范学院 | Vegetable leaf acetamiprid residue detection method and detection system |
-
2009
- 2009-03-31 CN CN200910058751A patent/CN101527599A/en active Pending
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010142239A1 (en) * | 2009-06-11 | 2010-12-16 | 青岛海信宽带多媒体技术有限公司 | Optical line terminal |
| WO2010142140A1 (en) * | 2009-06-11 | 2010-12-16 | 青岛海信宽带多媒体技术有限公司 | Optical line terminal |
| US8705957B2 (en) | 2009-06-11 | 2014-04-22 | Hisense Broadband Multimedia Technologies Co., Ltd | Optical line terminal |
| CN102780525A (en) * | 2011-05-09 | 2012-11-14 | 深圳新飞通光电子技术有限公司 | Burst received optical power detection device and method thereof |
| CN102281101B (en) * | 2011-06-29 | 2014-02-05 | 成都优博创技术有限公司 | Method and device for timely monitoring and maintaining emission light power in burst mode |
| CN102281101A (en) * | 2011-06-29 | 2011-12-14 | 成都优博创技术有限公司 | Method and device for timely monitoring and maintaining emission light power in burst mode |
| CN102324899A (en) * | 2011-08-24 | 2012-01-18 | 成都优博创技术有限公司 | Transresistance amplifier with received signal strength indication (RSSI) function |
| CN102427388A (en) * | 2011-12-08 | 2012-04-25 | 深圳市共进电子股份有限公司 | Reset current compensation type sudden receiving optical power monitor |
| CN102427388B (en) * | 2011-12-08 | 2014-06-04 | 深圳市共进电子股份有限公司 | Reset current compensation type sudden receiving optical power monitor |
| CN103188012A (en) * | 2011-12-28 | 2013-07-03 | 深圳新飞通光电子技术有限公司 | Optical power detection circuit for OLT module |
| CN102857298A (en) * | 2012-04-25 | 2013-01-02 | 索尔思光电（成都）有限公司 | Circuit and method for monitoring power parameter in optical module |
| CN102857298B (en) * | 2012-04-25 | 2015-10-21 | 索尔思光电（成都）有限公司 | The circuit of monitor power parameter and method in optical module |
| CN102661788B (en) * | 2012-05-30 | 2017-04-19 | 上海奥通激光技术有限公司 | Laser energy detector |
| CN102661788A (en) * | 2012-05-30 | 2012-09-12 | 上海奥通激光技术有限公司 | Laser energy detector |
| CN102735335A (en) * | 2012-07-02 | 2012-10-17 | 上海市共进通信技术有限公司 | Device for realizing optical power detection in optical fiber network |
| CN103763023A (en) * | 2014-01-22 | 2014-04-30 | 桂林聚联科技有限公司 | ONU state tester for passive optical network test |
| WO2018058523A1 (en) * | 2016-09-30 | 2018-04-05 | 华为技术有限公司 | Signal processing apparatus, optical line terminal, and communication system |
| US10574353B2 (en) | 2016-09-30 | 2020-02-25 | Huawei Technologies Co., Ltd. | Signal processing apparatus, optical line terminal, and communications system |
| CN106712844A (en) * | 2016-12-15 | 2017-05-24 | 武汉电信器件有限公司 | Method for extracting 100GEMLTOSA optical power report without integrated PD |
| CN106712844B (en) * | 2016-12-15 | 2019-06-11 | 武汉电信器件有限公司 | A kind of extracting method that the 100G EML TOSA optical power of the integrated PD of nothing reports |
| CN108833869A (en) * | 2018-07-27 | 2018-11-16 | 浙江传媒学院 | A kind of changeable burst optical transmission circuit for cable TV network data feedback channel |
| CN108833869B (en) * | 2018-07-27 | 2020-07-21 | 浙江传媒学院 | Switchable burst light emitting circuit for uplink channel of cable television network |
| CN112737672A (en) * | 2020-12-21 | 2021-04-30 | 成都储翰科技股份有限公司 | Received power intensity detection circuit for burst light receiver |
| CN118010697A (en) * | 2024-04-08 | 2024-05-10 | 泉州师范学院 | Vegetable leaf acetamiprid residue detection method and detection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101527599A (en) | Method for measuring burst mode light power and device thereof | |
| CN102130720B (en) | Method and device for detecting optical power of passive optical network (PON) and PON system | |
| US20120045202A1 (en) | High Speed Bi-Directional Transceiver, Circuits and Devices Therefor, and Method(s) of Using the Same | |
| CN101895350B (en) | 10G Ethernet passive network single-fiber bidirectional optical module | |
| CN101510802A (en) | Circuit for measuring outburst mode optical signal power | |
| CN102213806B (en) | Temperature control type 10G 80km SFP+ (enhanced 8.5 and 10 gigabit small form factor pluggable module) optical module with low power consumption | |
| CN101350676B (en) | Automatic average optical power control system for bursting light emission module | |
| US8452172B2 (en) | Testing an optical network | |
| CN103236883B (en) | GPON (gigabit passive optical network) remote system and digital diagnosis method | |
| JP6315950B2 (en) | Optical power monitoring circuit, optical module, station side device, optical power monitoring method and program | |
| CN102843190B (en) | optical module and optical module chip thereof | |
| CN102185649A (en) | System and method for monitoring high-precision suddenly received optical power | |
| CN102394696B (en) | Method for monitoring burst emitting light power of optical module and optical module | |
| US8340519B2 (en) | Passive optical network comprising an optical burst mode receiver | |
| CN201409137Y (en) | Optical power meter for testing passive optical network | |
| CN201430592Y (en) | Integrated optical receiving and transmitting module for Ethernet passive optical network | |
| CN101839764B (en) | Optical power meter for testing passive optical network | |
| CN103004108A (en) | Optical power detection method, apparatus, equipment and optical module | |
| CN102761795B (en) | EPON and light fill system thereof | |
| CN202374268U (en) | OLT (Optical Line Terminal) module optical power detection circuit | |
| Perhirin et al. | A power-over-fiber system and its low consumption remote equipment for submarine applications | |
| KR20050005602A (en) | Optical signal power level measuring apparatus and OLT(Optical Line Termination) having the apparatus in Gigabit Passive Optical Network | |
| CN101893490B (en) | Receiving subsystem for distributed fiber temperature sensing system and monitoring method thereof | |
| Xiang et al. | Research and design of 800Gbit/s PAM4 LR8 10km optical module | |
| CN202841138U (en) | Optical module and optical module chip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090909 |