CN105471497B - Method and device for predicting service life of parallel optical module in open-loop mode - Google Patents
Method and device for predicting service life of parallel optical module in open-loop mode Download PDFInfo
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- CN105471497B CN105471497B CN201510816823.6A CN201510816823A CN105471497B CN 105471497 B CN105471497 B CN 105471497B CN 201510816823 A CN201510816823 A CN 201510816823A CN 105471497 B CN105471497 B CN 105471497B
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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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/073—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an out-of-service signal
- H04B10/0731—Testing or characterisation of optical devices, e.g. amplifiers
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Abstract
The invention discloses a method and a device for predicting the service life of an open-loop mode parallel optical module, which solve the technical problem that the service life of the open-loop mode parallel module cannot be predicted. The method comprises the following steps: controlling the power-on time sequence of the parallel optical module to enable a transmitting module and a receiving module in the parallel optical module to be powered on firstly; after the transmitting module and the receiving module are powered on, the parallel optical module is controlled not to transmit data or idle codes; acquiring response current Irssi (t) of a received light intensity indicating signal of a receiving module at each power-on; judging whether the service life of the parallel optical module is exhausted or not based on the response current intensity of the received light intensity indicating signal; irssi (t) ═ R × P (t), R is responsivity of the receiving module detector, P (t) × Ibias (t) is optical power received by the receiving module, S (t) is skew efficiency of the laser, Ibias (t) is bias current loaded to the laser, and attenuation of the line fiber is ignored.
Description
Technical field
The present invention relates to optical module technical field, more particularly to a kind of open loop mode parallel optical module life-span prediction method and
Device.
Background technology
In optic fiber beam sensor field, to improve information transfer bandwidth, strengthen data throughput capabilities, the light applied at present
Module is parallel optical module, and existing parallel optical module is open loop mode of operation, i.e. is integrally sealed to improve optical module
Density and bandwidth of operation are filled, (Chip on board, bare chip is adhered to mutually with conductive or non-conductive adhesive using bare chip COB
On symbasis plate, then carrying out wire bonding and realize its electrical connection) packaging technology realizes that laser uses VCSEL (Vertical
Cavity Surface Emitting Laser, vertical cavity surface emitting laser) nude film array, detector uses PIN nude film battle arrays
Row, without backlight monitoring diode MPD of the tradition based on TO-CAN coaxial packagings telecommunications SFP/SFF modules, can not realize and close
Ring mode of operation.
Shown in the block diagram of traditional closed-loop pattern work optical module as shown in Figure 1, because being worked using closed loop mode, so as to
Possess digital diagnostic monitoring function, particularly load the bias current Ibias of laser works and the Impd electric currents of backlight detection.
Backlight monitoring diode MPD prisons in TOSA (Transmitter Optical Subassembly, light emission secondary module) component
The luminous power that control laser Laser is sent, feed back to the automated power control unit AP C of laser driving circuit, regulation loading
Bias current size on to laser, so as to ensure Output optical power P (t)=S (t) in whole life cycle ×
Ibias (t) is constant；Wherein, P (t) is optical output power of laser, and S (t) is the Slop efficiency of laser, and Ibias (t) is loading
Bias current on to laser.
In order to keep whole optical link in life cycle system can steady operation, it is necessary to laser Laser output lights
Power remains steady state value, but semiconductor laser is increasingly deteriorated, shown with the increase of service life, its performance
It is exactly its Slop efficiency S (t) less and less in parameter, so the bias current that needs make to be loaded on laser is increasing.When
Ibias(tn)≥2×Ibias(t0) when, judge that the laser life-span cycle ends, i.e., the service life of optical module is tn。
And for open loop mode parallel modules, because number of channels increases, block density increases, module chip package dimension
Design bottleneck is increasingly becomed, existing solution is without closed loop automated power control operational module is provided, as shown in Figure 2
Open loop mode work parallel modules link block diagram shown in.This COB techniques that are based on are directly by multidiameter delay nude film driving chip
Realization is bonded with multichannel VCSEL array by Wire Bonding modes to connect, default backlight monitoring diode in design, from
And the monitoring of transmitting luminous power difficult to realize, so service life life prediction directly can not be carried out from transmitting end module.
The content of the invention
It is an object of the invention to provide a kind of open loop mode parallel modules life-span prediction method and device, solves open loop mode
Parallel modules service life life-span unpredictable technical problem.
The purpose of the present invention is achieved through the following technical solutions：
A kind of open loop mode parallel optical module life-span prediction method is proposed, including：Parallel optical module is controlled when upper electric every time
Electrifying timing sequence so that transmitter module and receiving module in parallel optical module are first powered up；In transmitter module and receiving module
After upper electricity, the parallel optical module is controlled not transmit data or transmission bell idles；Obtain the reception light intensity instruction letter of receiving module
Number response current Irssi (t)；Based on the response current intensity for receiving light intensity indication signal, the parallel optical module is judged
Whether service life exhausts；Wherein, Irssi (t)=R × P (t), R be receiving module detector responsiveness, P (t)=S (t)
× Ibias (t) is the luminous power that receiving module receives, and S (t) is the Slop efficiency of laser, and Ibias (t) is to be loaded into laser
Bias current on device.
A kind of open loop mode parallel optical module life predication apparatus, including open loop mode parallel optical module are proposed, it is described to open
Ring mode parallel optical module includes receiving module and transmitter module；Also include electrifying timing sequence control module, transmission control module,
RSSI acquisition modules and judge module；The electrifying timing sequence control module, parallel optical module is controlled when electric on every time
Electric sequential so that transmitter module and receiving module in parallel optical module are first powered up；The transmission control module, for sending out
Penetrate on module and receiving module after electricity, control the parallel optical module not transmit data or transmission bell idles；The RSSI is obtained
Module, the response current Irssi (t) of the reception light intensity indication signal for obtaining receiving module；The judge module, for base
In the response current intensity for receiving light intensity indication signal, judge whether the service life of the parallel optical module exhausts；Wherein,
Irssi (t)=R × P (t), R are the responsiveness of receiving module detector, and P (t)=S (t) × Ibias (t) connects for receiving module
The luminous power received, S (t) are the Slop efficiency of laser, and Ibias (t) is the bias current being loaded on laser.
The technical scheme of the embodiment of the present invention, its technique effect having or advantage are：What the embodiment of the present invention proposed
In open loop mode parallel optical module life-span prediction method and device, due to the response electricity of the reception light intensity indication signal of receiving module
Flow to receive the current signal after the luminous power detected conversion, this numerical value not only reflects the light work(of transmitting terminal laser output
Rate, while the loss also including whole optical network link and the use situation of change of receiving module detector, reflection is one
Global optical-fiber network index of aging, shows as Irssi (t)=R × P (t), because open loop mode of operation is in same operating temperature
Under, the electric current being carried on laser is a fixed numerical value, then as the increase of usage time, the Slop efficiency of laser subtract
It is small, and load bias current because open loop mode be fixed numbers at the same temperature, then its export luminous power with
The increase of service life is gradually reduced, so that the luminous power that receiving module reception detects is also less and less, therefore can basis
The change of the response current intensity of the reception light intensity indication signal of receiving module judges the service life of parallel optical module, when connecing
The intensity for receiving luminous intensity indication signal response current is reduced to the response electricity of the reception light intensity signal obtained when it goes up electric first
During the setting ratio of intensity of flow, you can judge the end of life of parallel optical module；The setting ratio can according to statistics and
Empirical value is set.
Thus, even if open loop mode parallel optical module can not be real because not possessing the backlight monitoring diode of closed loop mode
Now launch the monitoring of luminous power, the longevity of optical module can also be judged by obtaining the reception luminous intensity indication signal of receiving module
Life, solves open loop mode parallel modules service life life-span unpredictable technical problem.
Brief description of the drawings
Fig. 1 is closed loop mode optical module system block diagram；
Fig. 2 is open loop mode parallel optical module link block diagram；
Fig. 3 is the open loop mode parallel optical module life predication apparatus block diagram that the embodiment of the present invention proposes.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, the present invention is made below in conjunction with accompanying drawing into
One step it is described in detail, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole implementation
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
All other embodiment, belongs to the scope of protection of the invention.
The mentality of designing of the present invention is：Individually only from the point of view of the transmitter module of optical module, closed because open loop mode is default
Backlight monitoring diode in ring mode and the service life of optical module can not be monitored and be predicted, still, make from system
Considered with end, passed through entirely because the reception luminous intensity indication signal RSSI of receiving module response current is transmitter module
After optical link, the signal after being recovered by receiving module detection, this reception signal not only uses the longevity including transmitting terminal laser
Information is ordered, the loss of whole optical link is also covers and receives the service life of end detector, reaction is one global
Optical-fiber network index of aging.Therefore, even if the optical module of open loop mode does not possess backlight monitoring diode, can also be connect by obtaining
The response current of the reception luminous intensity indication signal of receipts module changes to analyze the service life of optical module.
The open loop mode parallel optical module life-span prediction method that the embodiment of the present invention proposes, comprises the following steps：
Step S11：The electrifying timing sequence of parallel optical module is controlled when upper electric every time so that the transmitter module in parallel optical module
It is first powered up with receiving module；
Step S12：On transmitter module and receiving module after electricity, control parallel optical module does not transmit data or transmission is idle
Code.
Optical module after dispatching from the factory first in use, and it is follow-up every time on electricity in use, optical network link connection bar
Under part, first to electricity on transmitter module and receiving module, but data not being transmitted or only send bell idles, this is acquisition receiving module
Reception luminous intensity indication signal prerequisite.
Step S13：Obtain the response current Irssi (t) of the reception light intensity indication signal of receiving module.
Step S14：The response current of the reception light intensity indication signal of the receiving module obtained after each upper electricity of record.
Optical module is upper first electric in use, monitoring and obtaining the response current of the reception light intensity indication signal of receiving module
Irssi(t0), and this numerical value is preserved as monitoring parameter during optical module initial power-on.In follow-up start normal work every time
Before, the response for all repeating the above steps and recording the reception light intensity indication signal for preserving the receiving module obtained after lower upper electricity is electric
Stream, the monitoring parameter as optical module life prediction.
Step S15：Based on the response current intensity for receiving light intensity indication signal, judging the service life of parallel optical module is
It is no to exhaust.Wherein, Irssi (t)=R × P (t), R be receiving module detector responsiveness, P (t)=S (t) × Ibias (t)
The luminous power received for receiving module, S (t) are the Slop efficiency of laser, and Ibias (t) is the biasing being loaded on laser
Electric current, ignore circuit optical fiber decay.
The reception luminous intensity indication signal RSSI of receiving module response current be transmitter module by whole optical link it
Afterwards, the signal after being recovered by receiving module detection, this reception signal not only include the service life information of transmitting terminal laser, also
Cover the loss of whole optical link and receive the service life of end detector, reaction is a global optical-fiber network life-span
Index, therefore, the change of the response current of the reception luminous intensity indication signal of receiving module can also reflect the use of optical module
Life information.
Specifically, obtained on each optical module after electricity the reception light intensity indication signal of receiving module response current it
Afterwards, judge whether response current intensity is less than certain numerical value, the numerical value is statistics or empirical value, for a setting intensity.If
It is that then can tentatively judge that the link budget of whole optical link is finished, i.e. the service life of optical module exhausts.Response current
Irssi (t) is shown as：Irssi (t)=R × P (t), R are the responsiveness of receiving module detector, and P (t) receives for receiving module
The luminous power arrived, the luminous power can be expressed as P (t)=S (t) × Ibias (t), then Irssi (t)=R × S (t) × Ibias
(t)。
Set setting for the response current intensity for the reception light intensity signal that intensity obtains as parallel optical module when upper first electric
Certainty ratio, namely Irssi (t0) setting ratio, the setting ratio according to statistics or experience obtain, such as whenWhen, approximate it can judge that the link budget of whole optical link is finished, i.e. the service life of optical module is
tn。
Based on above-mentioned open loop mode parallel optical module life-span prediction method, the embodiment of the present invention also proposes a kind of open loop mode
Parallel optical module life predication apparatus, as shown in figure 3, including open loop mode parallel optical module 41, open loop mode parallel optical module
Including receiving module 411 and transmitter module 412；Also include electrifying timing sequence control module 42, transmission control module 43, RSSI to obtain
Module 44, memory module 45 and judge module 46.
Electrifying timing sequence control module 42 be used for every time on it is electric when control parallel optical module electrifying timing sequence so that parallel light
Transmitter module 412 and receiving module 411 in module are first powered up；Transmission control module 43 is used in transmitter module and receives mould
On block after electricity, control parallel optical module does not transmit data or transmission bell idles；RSSI acquisition modules 44 are used to obtain receiving module
Reception light intensity indication signal response current Irssi (t)；Memory module 45 is used to record every time the reception mould obtained after upper electricity
The response current of the reception light intensity indication signal of block；Judge module 46 is used for strong based on the response current for receiving light intensity indication signal
Degree, judges whether the service life of parallel optical module exhausts；Wherein, Irssi (t)=R × P (t), R are receiving module detector
Responsiveness, P (t)=S (t) × Ibias (t) is the luminous power that receives of receiving module, and S (t) is the Slop efficiency of laser,
Ibias (t) is the bias current being loaded on laser.
Specifically, judge module 45 judges whether the response current intensity for receiving light intensity indication signal is less than setting intensity；
If so, then judge that the service life of parallel optical module exhausts；Wherein, set what intensity obtained as parallel optical module when upper first electric
Receive the setting ratio of the response current intensity of light intensity signal.
The course of work of open loop mode parallel optical module life predication apparatus is in above-mentioned open loop mode parallel optical module
It is described in detail in life-span prediction method, it will not go into details herein.
In open loop mode parallel optical module life-span prediction method and device that the embodiment of the present invention proposes, due to receiving module
Reception light intensity indication signal response current to receive the current signal after the luminous power detected conversion, this numerical value is not only anti-
The luminous power of transmitting terminal laser output, while the also loss including whole optical network link and receiving module detector are reflected
Using situation of change, reflection is a global optical-fiber network index of aging, Irssi (t)=R × P (t) is shown as, because opening
For ring mode of operation under same operating temperature, the electric current being carried on laser is a fixed numerical value, then with use when
Between increase, the Slop efficiency of laser reduces, and the bias current loaded is fixed at the same temperature because of open loop mode
Numerical value, then the luminous power of its output is gradually reduced with the increase of service life, so that receiving module receives the light work(detected
Rate is also less and less, therefore can be judged according to the change of the response current intensity of the reception light intensity indication signal of receiving module
The service life of parallel optical module, obtained when the intensity for receiving luminous intensity indication signal response current is reduced to when it goes up electric first
Reception light intensity signal response current intensity setting ratio when, you can judge the end of life of parallel optical module；
The setting ratio can be set according to statistics and empirical value.
Thus, even if open loop mode parallel optical module can not be real because not possessing the backlight monitoring diode of closed loop mode
Now launch the monitoring of luminous power, the longevity of optical module can also be judged by obtaining the reception luminous intensity indication signal of receiving module
Life, solves open loop mode parallel modules service life life-span unpredictable technical problem.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (5)
1. open loop mode parallel optical module life-span prediction method, it is characterised in that including：
The electrifying timing sequence of parallel optical module is controlled when upper electric every time so that the transmitter module and receiving module in parallel optical module are first
First upper electricity；
On transmitter module and receiving module after electricity, the parallel optical module is controlled not transmit data or transmission bell idles；
Obtain the response current of the reception light intensity indication signal of receiving module；
Based on the response current for receiving light intensity indication signalIntensity, judging the service life of the parallel optical module is
It is no to exhaust；
Wherein,,For the responsiveness of receiving module detector,For receiving module
The luminous power received,For the Slop efficiency of laser,To be loaded into the bias current on laser;
The response current based on reception light intensity indication signalIntensity, judge the parallel optical module use the longevity
Whether life exhausts, and is specially：
Judge the response current of reception light intensity indication signalIntensity whether be less than setting intensity；
If so, then judge that the service life of the parallel optical module exhausts；
Wherein, setting for the response current intensity for the reception light intensity signal that intensity obtains as parallel optical module when upper first electric is set
Certainty ratio.
2. open loop mode parallel optical module life-span prediction method according to claim 1, it is characterised in that received obtaining
The response current of the reception light intensity indication signal of moduleAfterwards, methods described also includes：
The response current of the reception light intensity indication signal of the receiving module obtained after each upper electricity of record.
3. open loop mode parallel optical module life-span prediction method according to claim 1, it is characterised in that the setting ratio
Example is 1/2.
4. open loop mode parallel optical module life predication apparatus, including open loop mode parallel optical module, the open loop mode are parallel
Optical module includes receiving module and transmitter module；Characterized in that, also include electrifying timing sequence control module, transmission control module,
RSSI acquisition modules and judge module；
The electrifying timing sequence control module, for every time on it is electric when control parallel optical module electrifying timing sequence so that parallel light
Transmitter module and receiving module in module are first powered up；
The transmission control module, after the electricity on transmitter module and receiving module, the parallel optical module is controlled not transmit
Data or transmission bell idles；
The RSSI acquisition modules, the response current of the reception light intensity indication signal for obtaining receiving module；
The judge module, for based on the response current for receiving light intensity indication signalIntensity, judge the parallel light
Whether the service life of module exhausts；
Wherein,,For the responsiveness of receiving module detector,For receiving module
The luminous power received,For the Slop efficiency of laser,To be loaded into the bias current on laser;
The judge module is based on the response current for receiving light intensity indication signalIntensity, judge the parallel optical module
Service life whether exhaust, be specially：
Judge the response current of reception light intensity indication signalIntensity whether be less than setting intensity；
If so, then judge that the service life of the parallel optical module exhausts；
Wherein, setting for the response current intensity for the reception light intensity signal that intensity obtains as parallel optical module when upper first electric is set
Certainty ratio.
5. open loop mode parallel optical module life predication apparatus according to claim 4, it is characterised in that described device is also
Including memory module；
The memory module, the response electricity of the reception light intensity indication signal for recording every time the receiving module obtained after upper electricity
Stream.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510816823.6A CN105471497B (en) | 2015-11-20 | 2015-11-20 | Method and device for predicting service life of parallel optical module in open-loop mode |
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| CN201510816823.6A CN105471497B (en) | 2015-11-20 | 2015-11-20 | Method and device for predicting service life of parallel optical module in open-loop mode |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109724775B (en) * | 2017-10-30 | 2021-03-02 | 中航海信光电技术有限公司 | Optical module open loop life compensation method and system |
| CN113422651B (en) * | 2021-08-24 | 2021-11-26 | 南京英田光学工程股份有限公司 | Transmitting power self-adaptive laser communication terminal and power control method thereof |
| CN117892640B (en) * | 2024-03-15 | 2024-05-24 | 成都航空职业技术学院 | Laser control method |
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|---|---|---|---|---|
| US7493048B2 (en) * | 2004-06-30 | 2009-02-17 | Finisar Corporation | Transceiver with persistent logging mechanism |
| CN103647606A (en) * | 2013-11-26 | 2014-03-19 | 上海斐讯数据通信技术有限公司 | GPON terminal transmitting-receiving-integrated optical assembly with RSSI function |
| CN203554442U (en) * | 2013-10-22 | 2014-04-16 | 青岛海信宽带多媒体技术有限公司 | RSSI monitoring circuit |
-
2015
- 2015-11-20 CN CN201510816823.6A patent/CN105471497B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7493048B2 (en) * | 2004-06-30 | 2009-02-17 | Finisar Corporation | Transceiver with persistent logging mechanism |
| CN203554442U (en) * | 2013-10-22 | 2014-04-16 | 青岛海信宽带多媒体技术有限公司 | RSSI monitoring circuit |
| CN103647606A (en) * | 2013-11-26 | 2014-03-19 | 上海斐讯数据通信技术有限公司 | GPON terminal transmitting-receiving-integrated optical assembly with RSSI function |
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