CN101604997A - A kind of method and device of controlling optical link - Google Patents
A kind of method and device of controlling optical link Download PDFInfo
- Publication number
- CN101604997A CN101604997A CNA2009101501302A CN200910150130A CN101604997A CN 101604997 A CN101604997 A CN 101604997A CN A2009101501302 A CNA2009101501302 A CN A2009101501302A CN 200910150130 A CN200910150130 A CN 200910150130A CN 101604997 A CN101604997 A CN 101604997A
- Authority
- CN
- China
- Prior art keywords
- optical link
- module
- light signal
- signal
- optical
- 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)
Abstract
The invention discloses a kind of method of controlling optical link, be used to realize that optical link recovers automatically in unusual eliminating back, and the transmission that reduces light signal, the life-span of prolongation optical module.Described method comprises: after knowing that optical link occurs unusually, the pilot light module stops to send light signal; Stop to send light signal during, optical link is detected; If know that optical link is normal, then the pilot light module sends light signal; If know the optical link persistent anomaly, when the duration that stops to send light signal satisfied first duration, the pilot light module sent light signal.The invention also discloses the device and the system that are used to realize described method.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to method and the device of controlling optical link.
Background technology
Optical transport technology has been applied to growing field.In long-term actual the use, various faults may take place in optical module, as can't normally sending or receiving optical signals etc.Prior art causes bigger problem for fear of the optical module fault, and optical module can be closed when finding faults itself automatically, gets rid of up to fault.At this moment, the optical module of opposite end may be normal, still can continue to send light signal, and this light signal can't normally be received by the optical module of local terminal fault, causes the misinformation of information easily or loses.That is, the optical module of local terminal be because fault possibly can't correctly resolve light signal, may make a mistake to resolve or can't resolve the phenomenon that just abandons light signal.Simultaneously, the transmitting optical signal of Chi Xuing has also influenced the life-span of the optical module of opposite end.
Prior art is closed when the optical module of one end breaks down automatically in order to reduce the influence to the optical module life-span, and the optical module of the other end also can be closed after detecting the opposite end and closing automatically.Can't open automatically after the two ends optical module is closed automatically and recover optical link, need manual operation to come the optical module at two ends is resetted, it is very inconvenient to operate.
In addition, along with the prolonged application of optical transmission, the contaminated or optical fiber fusion problem such as excessive that decays always appears as optical fiber, make light signal in transmission course, obviously weaken, may be lower than the minimum receiving sensitivity of optical module, cause normally receiving optical signals, cause the optical link instability.
In the prior art, under the unsettled situation of optical link, the optical module at two ends still can continue transmitting optical signal, and this light signal will cause receiving the optical module generation misoperation of a side or obtain wrong data, may further cause serious consequence.And this optical signal transmission that may have serious consequences has also influenced life-span of the optical module at two ends.
Summary of the invention
The embodiment of the invention provides a kind of method and device of controlling optical link, is used to realize that optical link recovers automatically in the unusual back of getting rid of, and the transmission that reduces light signal, prolongs the life-span of optical module.
A kind of method of controlling optical link may further comprise the steps:
After knowing that optical link occurs unusually, the pilot light module stops to send light signal;
Stop to send light signal during, optical link is detected; If know that optical link is normal, then the pilot light module sends light signal; If know the optical link persistent anomaly, when the duration that stops to send light signal satisfied first duration, the pilot light module sent light signal.
A kind of equipment that is used to control optical link comprises:
Detecting module is used to know module, and optical link occurs unusual or optical link is normal;
The control output module is used for knowing that optical link occurs when unusual that the pilot light module stops to send light signal, and is knowing optical link just often, and the pilot light module sends light signal;
Clock module is used for timing, when the duration of knowing the optical link persistent anomaly and stopping to send light signal satisfies first duration, triggers control output module pilot light module and sends light signal.
A kind of system optical signal comprises:
Light device is used for sending and receiving optical signals, and optical link is detected, and is knowing that optical link occurs unusual and control appliance is just often notified in recovery;
Control appliance, be used to know optical link occur unusual after, pilot light equipment stops to send light signal; Stop to send light signal during, if know that optical link is normal, then pilot light equipment sends light signal; If know the optical link persistent anomaly, when the duration that stops to send light signal satisfied first duration, pilot light equipment sent light signal.
The embodiment of the invention makes optical module stop to send light signal when knowing that optical link is unusual, has reduced optical module and has sent the time of light signal, thereby prolonged the life-span of optical module.And optical module meeting transmission light signal behind first duration, impel the automatic recovery of optical link, do not need extraneous the intervention, no matter be that optical module fault or optical fiber are unusual promptly, the optical module at two ends all can recover the transmission of light signal after eliminating.
Description of drawings
Fig. 1 is the structure chart of system optical signal in the embodiment of the invention;
Fig. 2 is the main method flow chart of control optical link in the embodiment of the invention;
Fig. 3 is the detailed method flow chart of control optical link in the embodiment of the invention;
Fig. 4 is the structure chart of control appliance in the embodiment of the invention.
Embodiment
The embodiment of the invention is closed optical module when knowing that optical link is unusual, reduce to send useless light signal, prolongs the life-span of optical module.And open optical module over time, and optical link is detected, to realize the automatic recovery of optical link.
Referring to Fig. 1, system optical signal comprises in the present embodiment: light device 101 and control appliance 102.
After control appliance 102 was used to know that optical link occurs unusually, pilot light equipment 101 stopped to send light signal; Stop to send light signal during, if know that optical link is normal, then pilot light equipment 101 sends light signals; If know the optical link persistent anomaly, when the duration that stops to send light signal satisfied first duration, pilot light equipment 101 sent light signals.
Referring to Fig. 2, the main method flow process of control optical link is as follows in the present embodiment:
Step 201: after knowing that optical link occurs unusually, the pilot light module stops to send light signal.
Step 202: stop to send light signal during, optical link is detected.
Step 203: if know that optical link is normal, then the pilot light module sends light signal.
Step 204: if know the optical link persistent anomaly, when the duration that stops to send light signal satisfied first duration, the pilot light module sent light signal.
Comprising unusually described in the step 201: in the default time period, do not receive light signal; The intensity of the light signal of perhaps, receiving is less than minimum receiving sensitivity.Do not receive that light signal can think that the intensity of light signal is 0, so these two kinds unusually can be by determining less than minimum receiving sensitivity.Cause that unusual reason may be the optical module fault of opposite end, or optical fiber is aging etc.
Above-mentioned steps 201 to step 204 is that the overview of method is described, when specific implementation, may form by a plurality of steps, and be that example detects the control optical link and the implementation procedure of recovery describes in detail with CPLD and SFP below.
Referring to Fig. 3, the detailed method flow process of control optical link is as follows in the present embodiment:
It is unusual that step 301:SFP knows that optical link occurs, and be used to represent that to the CPLD transmission unusual abnormal indication signal appears in optical link.The specific implementation that SFP sends abnormal indication signal as: send high level signal by the los pin to CPLD.
Step 302:CPLD is unusual by receiving that abnormal indication signal knows that optical link occurs.
Step 303:CPLD sends shutdown signal to SFP, and SFP stops to send light signal with indication.The specific implementation that CPLD sends shutdown signal as: send high level signal by the TX_disable pin to SFP.
Step 304:CPLD picks up counting.This step can be carried out simultaneously with step 303.
Step 305:CPLD knows that optical link is normal, then sends start signal to SFP, and SFP sends light signal with indication.This moment, optical link recovered transmission, and CPLD stops timing, but still the input that the los pin is sent every the 3rd duration once.CPLD know the normal specific implementation of optical link as: receive that SFP passes through the low level signal that the los pin sends.CPLD sends specific implementation from start signal to SFP as: send low level signal by the TX_disable pin to SFP.
SFP has just closed the part that is used to send light signal, and the part that is used for receiving optical signals is operate as normal still, so SFP sends abnormal indication signal or normal index signal to CPLD always.
Step 306:CPLD is known the optical link persistent anomaly, then when first duration is satisfied in timing (promptly stopping to send the duration of light signal), sends start signal to SFP, and SFP sends light signal with indication.
Step 307:CPLD picks up counting once more.This step can be carried out simultaneously with step 305.CPLD can continue timing on the basis of step 304, for example step 304 picks up counting from 0, and timing reaches first duration (as 3s) in step 305, and CPLD can continue timing in the step 306 on the basis of 3S.Perhaps, CPLD is clear 0 with timing in the step 306, and then picks up counting.
Step 308:SFP sends light signal after receiving start signal.This step can be carried out simultaneously with step 307.
Step 309:SFP then sends abnormal indication signal, otherwise sends normal index signal if find that optical link is unusual.The specific implementation that SFP sends normal index signal as: send low level signal by the los pin to CPLD.
Step 310:CPLD normal index signal then stops timing if receive.CPLD then sends shutdown signal to SFP if continue to receive abnormal indication signal in second duration (as 1s) when reaching second duration, promptly repeating step 303.First duration and second duration have constituted one-period in the present embodiment, if SFP does not find that always optical link is normal, then continue to repeat this cycle.
If the SFP of local terminal adopts the described scheme of present embodiment, the SFP of opposite end adopts prior art, then the SFP of opposite end can continue to send light signal after fault recovery, no matter the SFP of local terminal is during stopping to send light signal or continues to send during the light signal, can detect the light signal (being not less than minimum receiving sensitivity) of the SFP transmission of opposite end.The SFP of local terminal determines that optical link is normal after detecting light signal, begins to send light signal, and then optical link recovers transmission.
If the SFP of the SFP of local terminal and opposite end all adopts the described scheme of present embodiment, according to the cycle that first duration and second duration constitute, there is a meeting to send light signal earlier among the SFP of local terminal and the SFP of opposite end, perhaps the SFP at two ends sends light signal simultaneously.If the SFP at two ends sends light signal simultaneously, then optical link recovers transmission naturally.If there is the SFP of an end to send light signal earlier, then the SFP of the other end also can send light signal after detecting light signal, and then optical link recovers transmission.
To sum up, as long as there is the SFP of an end to adopt the scheme of present embodiment, just can be by the transmission that the detection of optical link is recovered optical link automatically, and can prolong life-span of SFP.
Because SFP is from detecting optical link unusually to sending abnormal indication signal, need a reaction time, this duration probably is 100us, and other action of SFP also needs the reaction time, and the longest reaction time is about 1ms, so in order to reduce of the influence of this reaction time to detecting, preferable, the 3rd duration is much larger than this reaction time, and the 3rd duration is 10ms in the present embodiment, for 10 times of 1ms, can think much larger than this reaction time.Certainly can adjust the 3rd duration according to actual needs, as be 5ms or 15ms etc.
Repeat for many times to close and open for the continuous fault recovery of the SFP that prevents the opposite end makes the SFP of local terminal, fully take into account simultaneously in the practice, the time delay that the automatic recovery of optical link is allowed.Second duration is 1s in the present embodiment, for 100 times of 10ms, can think much larger than the 3rd duration.Certainly can adjust second duration according to actual needs, as 100ms etc.
Another purpose of present embodiment is to prolong the life-span of optical module, and therefore minimizing optical module as much as possible sends light signal under the situation that does not as far as possible influence optical signal transmission.So preferable, first duration can be established to such an extent that grow a bit, first duration in the present embodiment is 3s, and then optical module can be had a rest for 3/4ths time, has promptly prolonged for 3/4ths life-span.And in 4s, recover the transmission of optical link, less to user's influence, perhaps we can say not influence.Certainly can adjust first duration according to actual needs, as 2s etc.
Understood the implementation procedure of controlling optical link by above description, this control mainly realizes that by control appliance 102 26S Proteasome Structure and Function to control appliance 102 describes in detail below.
Referring to Fig. 4, control appliance 102 comprises detecting module 401, control output module 402 and clock module 403 in the present embodiment.
Detecting module 401 is used to know that optical link occurs unusual or knows that optical link is normal.Concrete, detecting module 401 receives being used to that optical module sends and represents that optical link unusual abnormal indication signal occurs and is used to represent the normal normal index signal of optical link.Detecting module 401 is knowing that optical link control output module 402 occurs triggering when unusual and sends shutdown signals, and is knowing that optical link just often triggers control output module 402 transmission start signal.Detecting module 401 can trigger to control output module 402 transmission high level signals or low level signal by hardware mode, and perhaps the mode by software triggers to control output module 402 transmission message.Simultaneously, detecting module 401 is knowing that optical link just often triggers clock module 403 and stops timing.Detecting module 401 can trigger to clock module 403 transmission high level signals or low level signal by hardware mode, and perhaps the mode by software triggers to clock module 403 transmission message.
Optical module can send high level signal to control appliance 102 by the TX_FAULT pin, the expression faults itself when detecting faults itself.102 of control appliances send high level signal by the TX_disable pin to optical module, and the pilot light module stops to send light signal.When fault is got rid of, recover detection to optical link, detecting optical link just often, control appliance 102 sends low level signal by the TX_disable pin to optical module, and the pilot light module starts the transmission of light signal, to recover the transmission of optical link; Detecting optical link when unusual, the pilot light module stops to send light signal, and to enter first duration, perhaps the pilot light module starts the transmission of light signal, to enter second duration.In the optical module failure process, control appliance 102 can not detect optical link, does not judge that promptly optical module passes through the signal that the los pin sends.
The embodiment of the invention makes optical module stop to send light signal when knowing that optical link is unusual, has reduced optical module and has sent the time of light signal, thereby prolonged the life-span of optical module.And optical module meeting transmission light signal behind first duration, impel the automatic recovery of optical link, do not need extraneous the intervention.The embodiment of the invention fully takes into account the reaction time of optical module and control appliance in the setting of each duration, reduced should the reaction time influence.
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 (11)
1, a kind of method of controlling optical link is characterized in that, may further comprise the steps:
After knowing that optical link occurs unusually, the pilot light module stops to send light signal;
Stop to send light signal during, optical link is detected; If know that optical link is normal, then the pilot light module sends light signal; If know the optical link persistent anomaly, when the duration that stops to send light signal satisfied first duration, the pilot light module sent light signal.
2, the method for claim 1 is characterized in that, describedly comprises unusually:
In the default time period, do not receive light signal; Perhaps
The intensity of the light signal of receiving is less than minimum receiving sensitivity.
3, the method for claim 1 is characterized in that, the step that the pilot light module stops to send light signal comprises: by sending shutdown signal to optical module, come the pilot light module to stop to send light signal.
4, the method for claim 1 is characterized in that, the step that the pilot light module sends light signal comprises: by sending start signal to optical module, come the pilot light module to send light signal.
5, as each described method in the claim 1 to 4, it is characterized in that, also comprise step: in sending the light signal process, optical link is detected, satisfy second duration if know the duration of optical link persistent anomaly and transmission light signal, then the pilot light module stops to send light signal.
6, the method for claim 1, it is characterized in that the step that optical link is detected comprises: represent that every the 3rd duration being used to of determining that optical module sends optical link unusual abnormal indication signal occurs or is used to represent the normal normal index signal of optical link.
7, a kind of equipment that is used to control optical link is characterized in that, comprising:
Detecting module is used to know that optical link occurs unusual or knows that optical link is normal;
The control output module is used for knowing that optical link occurs when unusual that the pilot light module stops to send light signal, and is knowing optical link just often, and the pilot light module sends light signal;
Clock module is used for timing, when the duration of knowing the optical link persistent anomaly and stopping to send light signal satisfies first duration, triggers control output module pilot light module and sends light signal.
8, equipment as claimed in claim 7 is characterized in that, detecting module receives being used to that optical module sends and represents that optical link unusual abnormal indication signal occurs and is used to represent the normal normal index signal of optical link.
9, equipment as claimed in claim 7 is characterized in that, the control output module comes the pilot light module to stop to send light signal by sending shutdown signal to optical module, and by sending start signal to optical module, comes the pilot light module to send light signal.
10, as claim 7,8 or 9 described equipment, it is characterized in that, when clock module satisfies second duration at the duration of knowing optical link persistent anomaly and transmission light signal, trigger control output module pilot light module and stop to send light signal.
11, a kind of system optical signal is characterized in that, comprising:
Light device is used for sending and receiving optical signals, and optical link is detected, and is knowing that optical link occurs unusual and control appliance is just often notified in recovery;
Control appliance, be used to know optical link occur unusual after, pilot light equipment stops to send light signal; Stop to send light signal during, if know that optical link is normal, then pilot light equipment sends light signal; If know the optical link persistent anomaly, when the duration that stops to send light signal satisfied first duration, pilot light equipment sent light signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101501302A CN101604997A (en) | 2009-07-07 | 2009-07-07 | A kind of method and device of controlling optical link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101501302A CN101604997A (en) | 2009-07-07 | 2009-07-07 | A kind of method and device of controlling optical link |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101604997A true CN101604997A (en) | 2009-12-16 |
Family
ID=41470565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101501302A Pending CN101604997A (en) | 2009-07-07 | 2009-07-07 | A kind of method and device of controlling optical link |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101604997A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740881A (en) * | 2020-06-12 | 2020-10-02 | 广东浪潮大数据研究有限公司 | Network card link detection method, system, equipment and computer storage medium |
| US20210297308A1 (en) * | 2018-07-11 | 2021-09-23 | Nippon Telegraph And Telephone Corporation | Communication apparatus and communication method |
-
2009
- 2009-07-07 CN CNA2009101501302A patent/CN101604997A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210297308A1 (en) * | 2018-07-11 | 2021-09-23 | Nippon Telegraph And Telephone Corporation | Communication apparatus and communication method |
| US11611470B2 (en) * | 2018-07-11 | 2023-03-21 | Nippon Telegraph And Telephone Corporation | Communication apparatus and communication method |
| CN111740881A (en) * | 2020-06-12 | 2020-10-02 | 广东浪潮大数据研究有限公司 | Network card link detection method, system, equipment and computer storage medium |
| CN111740881B (en) * | 2020-06-12 | 2022-04-29 | 广东浪潮大数据研究有限公司 | Network card link detection method, system, equipment and computer storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101483480B (en) | Power down warning apparatus for remote communication device and optical transceiving module | |
| CN102355046A (en) | Voltage detection and power failure protection device and implementation method | |
| CN101820558A (en) | Method for detecting long luminance ONU in passive optical network | |
| CN102136876A (en) | Light line protection acceleration circuit, light line protection system and method | |
| US5589683A (en) | Optical receiver apparatus for quickly detecting loss of a composite optical signal input employing a loss-of-clock detector | |
| EP2464040A1 (en) | Protection device and protection method for optical network | |
| CN101604997A (en) | A kind of method and device of controlling optical link | |
| GB2400511B (en) | Automatic power restoring method and optical communication system | |
| CN104135398A (en) | Intelligent RS485 concentrator and bus deadlock detection method | |
| CN101527639A (en) | Optic electric interface automatic switching method and device thereof | |
| EA010669B1 (en) | Method of controlling optical amplifier located along an optical link | |
| CN102546000B (en) | EPON OLT (Ethernet Passive Optical Network) OLT (Optical Line Terminal) energy-saving control method and system | |
| CN101848034B (en) | Optical path protecting device and method | |
| CN103051388A (en) | Device and method for optimizing burst mode transmission light module automatic light power control | |
| EP1496629B1 (en) | Light transmitter-receiver apparatus | |
| CN102970078B (en) | A kind of optical fiber network system and adopt this system to carry out the method for asynchronous communication transfer of data | |
| CN101997815B (en) | Exception recovery device and method of serial and parallel conversion interface | |
| CN103004108B (en) | Luminous power detection method, device, equipment and optical module | |
| US20170012701A1 (en) | A Multifunctional Laser Diode Driving Circuit, A Module Comprising the Same, and a Method Using the Same | |
| CN111262621B (en) | Method for performing automatic recovery from system hardware failure and optical communication module using the same | |
| CN101110644B (en) | Photodetector power supply control method, control module and optical receiver | |
| CN111431592B (en) | Power amplifier protection method, power amplifier protection device and computer storage medium | |
| CN109327262B (en) | APR (advanced peripheral component interconnect) implementation method and device under OSC (open channel monitoring) free monitoring mechanism | |
| CN1852057A (en) | Method and system for realizing laser safety in optical fiber communication system | |
| RU2018139479A (en) | COMMUNICATION DEVICE, COMMUNICATION METHOD, PROGRAM AND COMMUNICATION SYSTEM |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20091216 |