CN104836613A - Method for calibrating receiving end optical power of optical module - Google Patents
Method for calibrating receiving end optical power of optical module Download PDFInfo
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- CN104836613A CN104836613A CN201510242934.0A CN201510242934A CN104836613A CN 104836613 A CN104836613 A CN 104836613A CN 201510242934 A CN201510242934 A CN 201510242934A CN 104836613 A CN104836613 A CN 104836613A
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Abstract
The invention discloses a method for calibrating the receiving end optical power of an optical module. The optical module is an SFP small-sized pluggable photoelectric receiving-transmitting module of which the receiving end assembly is an APD avalanche photodiode. According to the method for calibrating the receiving end optical power of the optical module specific to an SFP optical module product using the APD avalanche photodiode as the receiving end assembly, a method for fitting and calibrating the receiving end optical power by approximating a logarithmic curve through a secondary function curve is adopted, so that the protocol accuracy meets the requirement of +/-3dB, and even the monitoring accuracy required in a protocol is exceeded. Meanwhile, calibration coefficients only consist of three constants since an MCU (Microprogrammed Control Unit) in the optical module only needs square operation, so that the problems of incapability of satisfying a time sequence, waste of resources, increase in load and the like of the MCU caused by the conventional complex logarithm operation are solved, and the beneficial effect of increasing the micro-control operation and running efficiencies of the MCU is achieved.
Description
Technical field
The present invention relates to a kind of optical module used in optical signal transmission situation.More particularly, the present invention relates to a kind of optical module receiving end optical power calibration method be used in optical signal transmission situation.
Background technology
According to SFF-8472 agreement regulation, optical module needs under the input of different receiving terminal luminous powers, and real-time sampling receiving terminal luminous power also reports equipment, reaches monitoring and whether diagnostic light module normally works, link attenuation whether normally object with this.Therefore need in optical module production process to calibrate receiving end luminous power, thus make optical module can accurately monitor when different luminous power inputs and report.Agreement specifies that the luminous power precision monitored is ± 3dB, and equipment component producer permissible accuracy is ± and 1.5dB is even higher, and therefore, the monitoring precision how improving optical module receiving end luminous power is particularly important.
The linear PIN photodiode of the many employings of SFP optical module of normal tape digital diagnosis function is as receiving terminal assembly, but along with the development of optical communication technique, the an urgent demand of long range propagation makes SFP optical module have employed to have the APD avalanche photodide device of nonlinear characteristic, and its use is more extensive.
For its traditional linear calibration methods of optical module adopting PIN photodiode as receiving terminal assembly be, optical module high light and a low light level is input to respectively by the decay controlling attenuator, to sample respectively again the photocurrent values of two points, obtain two groups of data (PWR
1, PWR
2and I
1, I
2), thus calculate two parameter k and b in linear function (PWR=kI+b), these two parameter read-in slave computers are completed calibration.When optical module normally works, the photocurrent values of real-time sampling receiving terminal, then go out optical power value now according to above-mentioned formulae discovery, according to protocol requirement write A2 [104-105] region, complete monitoring value and report.
For employing APD avalanche photodide as the optical module of receiving terminal optical assembly, because it has nonlinear characteristic, traditional linear calibration methods is caused to meet required precision.Especially APD device, the exponential relationship of its I-P curve directly cannot adopt traditional linear gauging mode especially, if adopt conventional linear method to calibrate, ± the required precision of 3dB cannot be ensured, therefore the following logarithmic relationship introduced can only be adopted to calibrate, with the requirement making it reach agreement precision.
Optical module choice for use APD avalanche photodide is as the reason of receiving terminal assembly, mainly after utilizing avalanche multiplication effect to make photoelectric current double, improve receiving sensitivity, and APD avalanche photodide needs certain reverse biased could produce corresponding multiplier effect, therefore the normal working voltage of APD avalanche photodide is being closed near puncture voltage (Vbr) all the time, when receiving end luminous power is very little (PWR<-20dBm), photocurrent variations is also very little, when receiving end luminous power large to a certain extent after, the photoelectric current exported will exponentially increase by type, chart as shown in Figure 1 can be drawn out by coordinate relation.
The relation of APD avalanche optoelectronic two pole output photoelectric stream (I) and input optical power (PWR) can represent with following formula:
I=ka
pWR+ b (formula 1)
For optical module, it needs the circuit real-time sampling photoelectric current by receiving terminal, calculates luminous power now by formula 2, and is updated to the EEPROM byte that SFF-8472 agreement specifies.
PWR=klog
ai+b (formula 2)
From formula 2, the relation (P-I) of receiving terminal luminous power PWR and photoelectric current as Fig. 2, in logarithmic relationship.
Adopt logarithmic relationship to carry out the calibration of optical module, although its calibration can reach agreement required precision, when optical module normally works, its each time the supervision and reporting of luminous power all need to carry out logarithm operation, could realize.But for the consideration of cost and encapsulation, optical module many employings MCU microcontroller or integrated chip complete its computing function needed, but MCU microcontroller is very limited for the support of floating type computing, if adopt formula 2 to carry out logarithm operation, the too many resource of MCU microcontroller can be taken, add the load of MCU microcontroller, affect its computing and the speed of service.
Summary of the invention
An object of the present invention is to solve at least the problems referred to above and/or defect, and the advantage will illustrated at least is below provided.
A further object of the invention is by providing a kind of SFP optical module receiving end luminous power for using APD avalanche optoelectronic two pole as receiving terminal assembly to carry out the method for calibrating, because its method adopting quadratic function curve to approach logarithmic curve carrys out the method for fitted calibration receiving end luminous power, make its ensure that agreement precision be ± 3dB requires even to exceed the monitoring precision of protocol requirement; Simultaneously for the MCU microcontroller in optical module, because its needs carry out square operation, calibration factor only has three constants, and relative to logarithm operation complicated in traditional calibration steps, it is simple that it has computing, is easy to the advantage realized.
A further object of the invention is by providing a kind of method adopting the optical module of calibration steps of the present invention to carry out luminous power digital supervision and reporting, optical module operationally, during MCU microcontroller calculates, the most complicated link also only relates to square operation, do not relate to logarithmic relationship computing, luminous power digital supervision and reporting is carried out relative to adopting the optical module of traditional calibration steps, which solve the MCU microcontroller that the complicated logarithm operation of MCU microcontroller causes and cannot meet sequential, the waste of resource, increase the problems such as load, make the computing of MCU microcontroller simple, its computational load amount significantly reduces, its response and the speed of service are significantly improved.
In order to realize according to these objects of the present invention and other advantage, provide a kind of method that the receiving end luminous power of optical module is calibrated, described optical module is the SFP small form factor pluggable optoelectronic transceiver module that receiving terminal assembly adopts APD avalanche photodide, comprises the following steps:
Step one, the APD avalanche photodide of described optical module receives n the optical power value PWR that varies in size that external equipment inputs successively
ncorresponding light signal, the value of wherein said n is 3, described optical power value PWR
nspan be-6dBm ~-32dBm;
Step 2, the light signal that the APD avalanche photodide of described optical module receives converts the sample circuit that corresponding photoelectric current exports to described optical module respectively to, and described sample circuit exports corresponding photocurrent values I
nto MCU microcontroller;
Step 3, described MCU microcontroller is based on optical power value PWR
nand photocurrent values I
n, obtain calibration factor a, b, the c corresponding to described optical module receiving terminal luminous power according to following formula;
Step 4, described MCU microcontroller, by the formula in calibration factor a, b, c and step 3, writes the calibration region of specifying in EEPPOM memory respectively, completes calibration.
Preferably, wherein, in step one, described external equipment comprises laser and optical attenuation controller, and described laser produces laser signal, and is adjusted to and optical power value PWR by described laser signal by optical attenuator
ncorresponding light signal inputs in the APD avalanche photodide of described optical module.
A kind of optical module adopting described calibration steps, comprise: the receiving end of described optical module comprises APD avalanche photodide, MCU microcontroller, described APD avalanche optoelectronic two pole is connected by sample circuit with MCU microcontroller, and described MCU microcontroller is also connected with EEPPOM memory.
Object of the present invention can also be realized by a kind of method adopting the luminous power of described optical module to its receiving end to report further, comprises the following steps:
Step one, the APD avalanche photodide receiving optical signals of described optical module, and the photoelectric current converting thereof into correspondence exports to sample circuit, described sample circuit exports corresponding photocurrent values I to MCU microcontroller;
Step 2, the MCU microcontroller of described optical module reads optical module receiving end optical power calibration coefficient a, b, c of storing in EEPPOM memory calibration region, and based on the photocurrent values I received, adopts following formula
PWR＝a·I
2+b·I+c
Calculate the luminous power PWR value of now optical module receiving end, for the supervision and reporting of receiving end optical power value.
The present invention at least comprises following beneficial effect: one, the method adopting quadratic function curve to approach logarithmic curve due to calibration steps of the present invention carrys out the method for fitted calibration receiving end luminous power, make the luminous power precision of calibrating rear optical module meet agreement precision to be the ± requirement of 3dB, even exceed the monitoring precision of protocol requirement.
Its two, because calibration steps of the present invention adopts the mode of quadratic function matching to carry out the calibration of receiving end luminous power, make calculating when calibrating more simple, arithmetic speed significantly promotes, and operability is stronger.
Part is embodied by explanation below by other advantage of the present invention, target and feature, part also will by research and practice of the present invention by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 is the exponential relationship I-P curve chart of APD avalanche photodide in optical module;
Fig. 2 is the logarithmic relationship P-I curve chart of APD avalanche photodide in optical module;
Fig. 3 is the P-I curve chart of quadratic function by matching of APD avalanche photodide in an alternative embodiment of the invention;
Fig. 4 is the structural representation of optical module in an alternative embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to specification word to make those skilled in the art.
Should be appreciated that used hereinly such as " to have ", other element one or more do not allotted in " comprising " and " comprising " term or the existence of its combination or interpolation.
According to a kind of method of calibrating the receiving end luminous power of optical module of the present invention, it is mainly used in optical module production process, described optical module is the SFP small form factor pluggable optoelectronic transceiver module that receiving terminal assembly adopts APD avalanche photodide, comprises the following steps:
Step one, the APD avalanche photodide of described optical module receive the n that inputs successively of external equipment and to vary in size optical power value PWR
ncorresponding light signal, the value of wherein said n is 3, described optical power value PWR
nspan be-6dBm ~-32dBm, the receiving terminal of optical module all has a working range, this scope is made up of overload point ~ sensitive point, and this scope depends on the optical device of optical module receiving terminal, therefore the span of described luminous power PWR depends on the nominal working range of photodiode in optical module, it is usually because of nominal working range or the model difference of photodiode, its scope required is also different, therefore it is not a definite value, so the span that the present invention provides is-6dBm ~-32dBm, it is a representative value, that it is expressed is a kind of overload representative value-6dBm of typical APD avalanche photodide, and the representative value-32dBm of sensitivity, surpass and go beyond the scope, the APD avalanche photodide of this model just may not work or damage, therefore in optical module because its concrete photodiode work scope is different, and the amendment that the span of the luminous power PWR in the present invention is carried out or replacement, still within protection scope of the present invention.As shown in Figure 3, the value of n is 3 is here because quadratic function only needs to get three coordinate points on its curve chart to the quadratic function P-I curve of APD avalanche photodide of the present invention, just can obtain the calibration factor constant in quadratic function;
Step 2, the light signal received is converted to the sample circuit that corresponding photoelectric current exports to described optical module by the APD avalanche photodide of described optical module respectively, and described sample circuit exports corresponding photocurrent values I
nto MCU microcontroller;
Step 3, described MCU microcontroller is based on optical power value PWR
nand photocurrent values I
n, obtain calibration factor a, b, the c corresponding to described optical module receiving terminal luminous power according to following formula;
The present invention adopts quadratic function curve to approach logarithmic curve, as shown in Figure 3, it adopts half section, parabolical left side curve, MCU microcontroller adds BORDER PROCESSING, the required precision of SFF-8472 requirement ± 3dB can be met, when calibrating in production process, only need to find these 3 constants of a, b and c; From the characteristic of quadratic function, solving these 3 constants needs 3 coordinate points, namely needs during calibration to export 3 performance number PWR to APD avalanche photodide successively by controlling optical attenuator
1, PWR
2and PWR
3(such as-8dBm ,-15dBm ,-28dBm), obtains corresponding photocurrent values I respectively by sample circuit
1, I
2and I
3, then calibration factor a, b and c of optical module receiving end luminous power is tried to achieve respectively by formula, there is computing simple, the advantage that the wasting of resources of MCU microcontroller is few;
Step 4, described MCU microcontroller, by the formula in calibration factor a, b, c and step 3, writes the calibration region of specifying in EEPPOM memory respectively, completes calibration.Adopt this scheme to carry out the method for fitted calibration receiving end luminous power because of method that it adopts quadratic function curve to approach logarithmic curve, making it ensure that agreement precision is the ± requirement of 3dB, even exceeding the monitoring precision of protocol requirement; Simultaneously for the MCU microcontroller in optical module, because its needs carry out square operation, calibration factor only has three constants, solve traditional complicated logarithm operation and the MCU microcontroller caused cannot meet sequential, the waste of resource, increase the problems such as load, make at optical module operationally, there is the favourable part improving MCU microcontroller computing and operational efficiency.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
Preferably, wherein, in step one, described external equipment comprises laser and optical attenuation controller, and described laser produces laser signal, and is adjusted to and optical power value PWR by described laser signal by optical attenuator
ncorresponding light signal inputs in the APD avalanche photodide of described optical module.When adopting this scheme to make to calibrate, the luminous power that the input optical signal of APD avalanche photodide is corresponding can adjust as required, length with respect to different cable realizes the method for optical power adjusting adjustment, has simple to operate, the favourable part that feasibility is good.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
A kind of optical module 1 that need adopt calibration steps of the present invention as shown in Figure 4, comprise: the receiving end 10 of described optical module comprises APD avalanche photodide 11, MCU microcontroller 12, described APD avalanche optoelectronic two pole is connected by sample circuit 13 with MCU microcontroller, and described MCU microcontroller is also connected with EEPPOM memory 14.Adopt this scheme to have and make its calibration steps have the favourable part of exploitativeness.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
Object of the present invention can also be realized by a kind of method adopting the luminous power of the optical module after calibration to its receiving end to report further, comprises the following steps:
Step one, the APD avalanche photodide receiving optical signals of described optical module, and the photoelectric current converting thereof into correspondence exports to sample circuit, described sample circuit exports corresponding photocurrent values I to MCU microcontroller;
Step 2, the MCU microcontroller of described optical module reads optical module receiving end optical power calibration coefficient a, b, c of storing in EEPPOM memory calibration region, and based on the photocurrent values I received, adopts following formula
PWR＝a·I
2+b·I+c
Calculate the luminous power PWR value of now optical module receiving end, for the supervision and reporting of receiving end optical power value.Adopt this scheme when optical module normally works, because MCU microcontroller only needs to read the calibration factor a specifying calibration region to obtain in eeprom memory, b, c, again according to the sampled value of the photoelectric current received, go out optical power value now by quadratic function formulae discovery and report, just complete the work of the digital supervision and reporting of luminous power, because in its calculating, the most complicated link also only relates to square operation, do not relate to logarithmic relationship computing, make the computing of MCU microcontroller simple, its computational load amount significantly reduces, its response and the speed of service are significantly improved, the method that the employing quadratic function curve simultaneously adopted because of the present invention approaches logarithmic curve carrys out the method for fitted calibration receiving end luminous power, it being had meet agreement precision is the ± requirement of 3dB, even exceed the favourable part of the monitoring precision of protocol requirement.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
Here the number of devices illustrated and treatment scale are used to simplify explanation of the present invention.Application to the method that the receiving end luminous power of optical module is calibrated of the present invention, modifications and variations be will be readily apparent to persons skilled in the art.
As mentioned above, according to the present invention, one, the method adopting quadratic function curve to approach logarithmic curve due to calibration steps of the present invention carrys out the method for fitted calibration receiving end luminous power, make the luminous power precision of calibrating rear optical module meet agreement precision to be the ± requirement of 3dB, even exceed the monitoring precision of protocol requirement.
Its two, because calibration steps of the present invention adopts the mode of quadratic function matching to carry out the calibration of receiving end luminous power, make calculating when calibrating more simple, arithmetic speed significantly promotes, and operability is stronger.
They are three years old, adopt the luminous power digital supervision and reporting of optical module to its receiving end of calibration steps of the present invention, it operationally, because MCU microcontroller only needs to read the calibration factor a specifying calibration region to obtain in eeprom memory, b, c, again according to the sampled value of the photoelectric current received, calculate optical power value now and report, just complete work optical module receiving end luminous power being carried out to digital supervision and reporting, in its calculating, the most complicated link also only relates to square operation in the process, do not relate to logarithmic relationship computing, make the computing of MCU microcontroller simple, its computational load amount significantly reduces, its response and the speed of service are significantly improved.
Although embodiment of the present invention are open as above, it is not restricted to listed in specification and execution mode utilization.It can be applied to the various field being applicable to this practicality completely.For those skilled in the art, can easily realize other amendment.Therefore do not deviating under the universal that claim and equivalency range limit, this practicality is not limited to specific details and illustrates here and the legend described.
Claims (4)
1., to the method that the receiving end luminous power of optical module is calibrated, described optical module is the SFP small form factor pluggable optoelectronic transceiver module that receiving terminal adopts APD avalanche photodide, it is characterized in that, comprises the following steps:
Step one, the APD avalanche photodide of described optical module receives n the optical power value PWR that varies in size that external equipment inputs successively
ncorresponding light signal, the value of wherein said n is 3, described optical power value PWR
nspan be-6 ~-32dBm;
Step 2, the light signal received is converted to the sample circuit that corresponding photoelectric current exports to described optical module by described APD avalanche photodide respectively, and described sample circuit exports corresponding photocurrent values I
nto MCU microcontroller;
Step 3, described MCU microcontroller is based on optical power value PWR
nand photocurrent values I
n, obtain calibration factor a, b, the c corresponding to described optical module receiving terminal luminous power according to following formula;
Step 4, described MCU microcontroller, by the formula in calibration factor a, b, c and step 3, writes the calibration region of specifying in EEPPOM memory respectively, completes calibration.
2. the method for as claimed in claim 1 the receiving end luminous power of optical module being calibrated, it is characterized in that, in step, described external equipment comprises laser and optical attenuation controller, described laser produces laser signal, and is adjusted to and optical power value PWR by described laser signal by optical attenuator
ncorresponding light signal inputs in the APD avalanche photodide of described optical module.
3. one kind adopts the optical module of calibration steps as described in claim 1-2, it is characterized in that, comprise: the receiving end of described optical module comprises APD avalanche photodide, MCU microcontroller, described APD avalanche optoelectronic two pole is connected by sample circuit with MCU microcontroller, and described MCU microcontroller is also connected with EEPPOM memory.
4. the method adopting the luminous power of optical module to its receiving end as described in claim 1-2 to report, is characterized in that, comprise the following steps:
Step one, the APD avalanche photodide receiving optical signals of described optical module, and the photoelectric current converting thereof into correspondence exports to sample circuit, described sample circuit exports corresponding photocurrent values I to MCU microcontroller;
Step 2, the MCU microcontroller of described optical module reads optical module receiving end optical power calibration coefficient a, b, c of storing in EEPPOM memory calibration region, and based on the photocurrent values I received, adopts following formula
PWR＝a·I
2+b·I+c
Calculate the luminous power PWR value of now optical module receiving end, for the supervision and reporting of receiving end optical power value.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404168A (en) * | 2016-09-29 | 2017-02-15 | 北京市计量检测科学研究院 | Method for obtaining the correction coefficient of the different wavelengths of a laser power meter |
| CN109269637A (en) * | 2018-08-27 | 2019-01-25 | 武汉华工激光工程有限责任公司 | A kind of laser power monitor method and device |
| CN109687904A (en) * | 2019-01-14 | 2019-04-26 | 广州致远电子有限公司 | A kind of short distance laser communication transmitting optical power calibration device and calibration method |
| CN111193551A (en) * | 2020-04-09 | 2020-05-22 | 深圳市欧深特信息技术有限公司 | Optical module parameter debugging method, storage medium and terminal equipment |
| CN112367116A (en) * | 2020-10-14 | 2021-02-12 | 武汉光迅科技股份有限公司 | Calibration method and device for optical power, electronic equipment and storage medium |
| CN113037370A (en) * | 2019-12-24 | 2021-06-25 | 深圳市中兴微电子技术有限公司 | BOSA received power calibration device method and device |
| CN113258999A (en) * | 2021-06-25 | 2021-08-13 | 武汉联特科技股份有限公司 | Method for calibrating optical power reported by optical receiving module, optical receiving module and medium |
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| EP4174687A4 (en) * | 2020-06-24 | 2024-07-10 | Accelink Tech Co Ltd | Calibration method, apparatus and device for coherent optical module, and computer readable storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252820A (en) * | 2011-06-22 | 2011-11-23 | 成都新易盛通信技术有限公司 | On-line automatic testing system in production of optical module |
| CN102394694A (en) * | 2011-11-02 | 2012-03-28 | 成都优博创技术有限公司 | RSSI (received signal strength indicator) monitoring circuit with high sampling accuracy |
| CN102610996A (en) * | 2012-01-19 | 2012-07-25 | 厦门优迅高速芯片有限公司 | Method and device for rapidly calibrating luminous power |
| CN103067077A (en) * | 2013-01-07 | 2013-04-24 | 青岛海信宽带多媒体技术有限公司 | Collecting device for improving small-light monitoring precision and monitor signal collecting method |
-
2015
- 2015-05-13 CN CN201510242934.0A patent/CN104836613A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252820A (en) * | 2011-06-22 | 2011-11-23 | 成都新易盛通信技术有限公司 | On-line automatic testing system in production of optical module |
| CN102394694A (en) * | 2011-11-02 | 2012-03-28 | 成都优博创技术有限公司 | RSSI (received signal strength indicator) monitoring circuit with high sampling accuracy |
| CN102610996A (en) * | 2012-01-19 | 2012-07-25 | 厦门优迅高速芯片有限公司 | Method and device for rapidly calibrating luminous power |
| CN103067077A (en) * | 2013-01-07 | 2013-04-24 | 青岛海信宽带多媒体技术有限公司 | Collecting device for improving small-light monitoring precision and monitor signal collecting method |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404168A (en) * | 2016-09-29 | 2017-02-15 | 北京市计量检测科学研究院 | Method for obtaining the correction coefficient of the different wavelengths of a laser power meter |
| CN109269637A (en) * | 2018-08-27 | 2019-01-25 | 武汉华工激光工程有限责任公司 | A kind of laser power monitor method and device |
| CN109687904A (en) * | 2019-01-14 | 2019-04-26 | 广州致远电子有限公司 | A kind of short distance laser communication transmitting optical power calibration device and calibration method |
| CN109687904B (en) * | 2019-01-14 | 2022-05-10 | 广州致远电子有限公司 | Short-distance laser communication emitted light power calibration device and calibration method |
| CN113037370A (en) * | 2019-12-24 | 2021-06-25 | 深圳市中兴微电子技术有限公司 | BOSA received power calibration device method and device |
| WO2021129764A1 (en) * | 2019-12-24 | 2021-07-01 | 深圳市中兴微电子技术有限公司 | Bosa receiving power calibration method and device |
| CN113037370B (en) * | 2019-12-24 | 2024-03-15 | 深圳市中兴微电子技术有限公司 | BOSA (British automatic acquisition) received power calibration device and method |
| CN111193551A (en) * | 2020-04-09 | 2020-05-22 | 深圳市欧深特信息技术有限公司 | Optical module parameter debugging method, storage medium and terminal equipment |
| US12068789B2 (en) | 2020-06-24 | 2024-08-20 | Accelink Technologies Co., Ltd. | Calibration method, apparatus and device for coherent optical module, and computer readable storage medium |
| EP4174687A4 (en) * | 2020-06-24 | 2024-07-10 | Accelink Tech Co Ltd | Calibration method, apparatus and device for coherent optical module, and computer readable storage medium |
| CN112367116A (en) * | 2020-10-14 | 2021-02-12 | 武汉光迅科技股份有限公司 | Calibration method and device for optical power, electronic equipment and storage medium |
| CN114966997B (en) * | 2021-02-20 | 2023-09-26 | 青岛海信宽带多媒体技术有限公司 | Optical module and received light power monitoring method |
| CN114966997A (en) * | 2021-02-20 | 2022-08-30 | 青岛海信宽带多媒体技术有限公司 | Optical module and received optical power monitoring method |
| CN113258999B (en) * | 2021-06-25 | 2021-09-17 | 武汉联特科技股份有限公司 | Method for calibrating optical power reported by optical receiving module, optical receiving module and medium |
| CN113258999A (en) * | 2021-06-25 | 2021-08-13 | 武汉联特科技股份有限公司 | Method for calibrating optical power reported by optical receiving module, optical receiving module and medium |
| CN113959492A (en) * | 2021-10-22 | 2022-01-21 | 济南森峰激光科技股份有限公司 | Light path protection monitoring system of self-adaptation threshold value |
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Application publication date: 20150812 |