CN103957052A - Optical fiber fault positioning method, optical module and optical fiber network unit - Google Patents
Optical fiber fault positioning method, optical module and optical fiber network unit Download PDFInfo
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- CN103957052A CN103957052A CN201410199278.6A CN201410199278A CN103957052A CN 103957052 A CN103957052 A CN 103957052A CN 201410199278 A CN201410199278 A CN 201410199278A CN 103957052 A CN103957052 A CN 103957052A
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Abstract
An embodiment of the invention provides an optical fiber fault positioning method, an optical module and an optical fiber network unit. The optical fiber fault positioning method comprises the steps of controlling a transmitting module transmitting a test signal according to a received test command, transmitting the test signal and an uplink service optical signal to an optical fiber interface of the optical fiber network unit through a transmission module, sending a reflected and/or scattered optical signal received by the optical fiber interface of the optical fiber network unit to a receiving module through the transmission module, enabling the receiving module to receive and send the reflected and/or scattered optical signal to a signal acquisition module, enabling a signal acquisition module to perform data processing on the reflected and/or scattered optical signal, receiving a reflected and/or scattered optical signal processing result of the signal acquisition module and confirming a fault region according to a comparison result of the processing result and a reference result. Accordingly, a branch optical fiber fault is accurately recognized.
Description
Technical field
The embodiment of the present invention relates to technical field of optical fiber communication, relates in particular to a kind of fiber failure localization method, optical module and optical network unit.
Background technology
EPON (Passive Optical Network is called for short PON) technology has become the prevailing model of consumer wideband accessing Internet at present, therefore, how the fibre circuit of PON is safeguarded, finds that in time optical-fiber line fault becomes more and more important.
Industry generally acknowledges that the effective Fault Locating Method of fibre circuit is optical time domain reflectometer (Optical Time Domain Reflectometer at present, be called for short OTDR) technology, by at optical line terminal (Optical Line Terminal, abbreviation OLT) external OTDR and optical switching device are accessed in PON port, utilize business ripple that test waves that the wavelength division multiplexing in optical switching device sends OTDR is sent with OLT close ripple to together with, re-send on optical splitter each branch optical fiber afterwards, the reflection of each branch optical fiber and/or scattered light signal return to OTDR testing equipment through optical switching device, the reflection each branch optical fiber receiving being superposeed by OTDR testing equipment and/or scattered light signal are processed and are determined that fault has appearred in which branch optical fiber, yet in the situation that branch optical fiber fault causes reflection and/or scattered light signal to change, which branch optical fiber is OTDR testing equipment cannot distinguish there is fault.
Summary of the invention
The embodiment of the present invention provides a kind of fiber failure localization method, optical module and optical network unit, for realize accurate positioning optical waveguides distributed network fault by ONU optical module.
First aspect, the embodiment of the present invention provides a kind of fiber failure localization method, comprising:
According to the test command receiving, control transmitter module emissioning testing signal;
By transport module by described test signal and uplink service optical signal transmission the optical fiber interface to optical network unit, and the reflection and/or the scattered light signal that the optical fiber interface of described optical network unit are received by described transport module are sent to receiver module;
At described receiver module, receive described reflection and/or scattered light signal and described reflection and/or scattered light signal are sent to signal acquisition module, and by described signal acquisition module, described reflection and/or scattered light signal are carried out after data processing, receive the result of described signal acquisition module to described reflection and/or scattered light signal;
According to the comparison result of described result and benchmark result, determine the region of breaking down.
In the possible implementation of the first of first aspect, described transmitter module is the first reflector, and the test command that described basis receives is controlled transmitter module emissioning testing signal, comprising:
According to the described test command receiving, control described the first reflector and launch described test signal;
Described transport module comprises the first circulator and first wave division multiplexer, described receiver module is the first receiver, described by transport module by described test signal and uplink service optical signal transmission the optical fiber interface to optical network unit, and by described transport module, reflection and/or the scattered light signal of the optical fiber interface reception of described optical network unit are sent to receiver module, comprising:
The described test signal of described the first reflector being launched by described the first circulator, described first wave division multiplexer and uplink service optical signal transmission are to the optical fiber interface of optical network unit, and the reflection and/or the scattered light signal that the optical fiber interface of described optical network unit are received by described first wave division multiplexer, described the first circulator are sent to described the first receiver.
The implementation possible according to the first of first aspect, in the possible implementation of the second, described test signal is that control module is controlled the first reflector described in the first driver drives and is sent to described the first circulator, and described uplink service light signal is that optical network unit is controlled the second driver and is sent to described the first circulator.
According to the first of first aspect or the possible implementation of the second, in the third possible implementation, described test signal is identical with the wavelength of described uplink service light signal.
According to first aspect, in the 4th kind of possible implementation, described transmitter module comprises the second reflector and the 3rd reflector, and the test command that described basis receives is controlled transmitter module emissioning testing signal, comprising:
According to the described test command receiving, control described the second reflector and launch described test signal;
Described transport module comprises the second circulator and Second Wave division multiplexer, described by transport module by described test signal and uplink service optical signal transmission the optical fiber interface to optical network unit, and by described transport module, reflection and/or the scattered light signal of the optical fiber interface reception of described optical network unit are sent to receiver module, comprising:
By described the second circulator, described Second Wave division multiplexer, the described test signal of described the second reflector transmitting is transferred to the optical fiber interface of optical network unit, the described uplink service optical signal transmission of described the 3rd reflector being launched by described Second Wave division multiplexer is to the optical fiber interface of optical network unit, and the reflection and/or the scattered light signal that the optical fiber interface of described optical network unit are received by described Second Wave division multiplexer, described the second circulator are sent to described the second receiver.
According to the 4th of first aspect the kind of possible implementation, in the 5th kind of possible implementation, described test signal is that described control module is controlled the second reflector described in the 3rd driver drives and is emitted to described the second circulator, and described uplink service light signal is that optical network unit is controlled the 3rd reflector described in the 4th driver drives and is sent to described Second Wave division multiplexer.
According to the 4th of first aspect the kind or the 5th kind of possible implementation, in the 6th kind of possible implementation, the wavelength of described test signal and described uplink service light signal is not identical.
Second aspect, the embodiment of the present invention provides a kind of optical module, comprising: control module, transmitter module and transport module, wherein:
Described control module, for according to the test command receiving, controls described transmitter module emissioning testing signal;
Described transmitter module, for emissioning testing signal and uplink service light signal to described transport module;
Described transport module, for the optical fiber interface to optical network unit by the described test signal of described transmitter module transmitting and uplink service optical signal transmission, and reflection and/or scattered light signal that the optical fiber interface of described optical network unit is received are sent to receiver module;
Described control module, also for receiving described reflection and/or scattered light signal at described receiver module and described reflection and/or scattered light signal being sent to signal acquisition module, and by described signal acquisition module, described reflection and/or scattered light signal are carried out after data processing, receive the result of described signal acquisition module to described reflection and/or scattered light signal; According to the comparison result of described result and benchmark result, determine the region of breaking down.
In the possible implementation of the first of second aspect, described transmitter module is the first reflector, and described transport module comprises the first circulator and first wave division multiplexer, and described receiver module is the first receiver, wherein:
Described the first circulator, be connected with described the first reflector, described first wave division multiplexer and described the first receiver respectively, for described first wave division multiplexer that described test signal and uplink service light signal are led, and the described reflection that the optical fiber interface of described optical network unit is received by described first wave division multiplexer and/or scattered light signal described the first receiver that leads;
Described first wave division multiplexer, be connected with the 3rd receiver with the optical fiber interface of described the first circulator, described optical network unit respectively, for the optical fiber interface to described optical network unit by the described test signal from described the first circulator and uplink service optical signal transmission, and the downlink business light signal of the optical fiber interface reception of described optical network unit is sent to described the 3rd receiver, and described reflection and/or scattered light signal that the optical fiber interface of described optical network unit is received are sent to described the first circulator.
The implementation possible according to the first of second aspect, in the possible implementation of the second, described test signal is that described control module is controlled the first reflector described in the first driver drives and is sent to described the first circulator, and described uplink service light signal is sent to described the first circulator for the first reflector described in the second driver drives being connected with described optical network unit.
According to the first of second aspect or the possible implementation of the second, in the third possible implementation, described test signal is identical with the wavelength of described uplink service light signal.
According to second aspect, in the 4th kind of possible implementation, described transmitter module comprises the second reflector and the 3rd reflector, and described transport module comprises the second circulator and Second Wave division multiplexer, and described receiver module is the second receiver, wherein:
Described the second circulator, be connected with described the second reflector, described Second Wave division multiplexer and described the second receiver respectively, for described test signal is transferred to described Second Wave division multiplexer, and described reflection and/or scattered light signal that the optical fiber interface of described optical network unit is received by described Second Wave division multiplexer are sent to described the second receiver;
Described Second Wave division multiplexer, respectively with described the second circulator, the optical fiber interface of described optical network unit, described the 3rd reflector is connected with the 4th receiver, for by the described test signal from described the second circulator and from the described uplink service optical signal transmission of described the 3rd reflector the optical fiber interface to described optical network unit, and the downlink business light signal that the optical fiber interface of described optical network unit is received is sent to described the 4th receiver, and described reflection and/or scattered light signal that the optical fiber interface of described optical network unit is received are sent to described the second circulator.
According to the 4th of second aspect the kind of possible implementation, in the 5th kind of possible implementation, described test signal is that described control module is controlled the second reflector described in the 3rd driver drives and is emitted to described the second circulator, and described uplink service light signal is sent to described Second Wave division multiplexer for the 3rd reflector described in the 4th driver drives being connected with described optical network unit.
According to the 4th of second aspect the kind or the 5th kind of possible implementation, in the 6th kind of possible implementation, the wavelength of described test signal and described uplink service light signal is not identical.
The third aspect, the embodiment of the present invention provides a kind of optical network unit, comprises the optical module described in above-mentioned any one.
Embodiment of the present invention fiber failure localization method, optical module and optical network unit, the test command receiving by basis, control transmitter module emissioning testing signal, by test signal and uplink service light signal to transport module, by transport module by test signal and uplink service optical signal transmission the optical fiber interface to optical network unit, and the reflection and/or the scattered light signal that the optical fiber interface of optical network unit are received by transport module are sent to receiver module, at receiver module, receive reflection and/or scattered light signal and reflection and/or scattered light signal are sent to signal acquisition module, and by signal acquisition module, reflection and/or scattered light signal are carried out after data processing, receive the result of signal acquisition module to reflection and/or scattered light signal, according to the comparison result of result and benchmark result, determine the region of breaking down, thereby realized accurate identification branch optical fiber fault.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The flow chart of the fiber failure localization method that Fig. 1 provides for the embodiment of the present invention one;
The flow chart of the fiber failure localization method that Fig. 2 provides for the embodiment of the present invention two;
The flow chart of the fiber failure localization method that Fig. 3 provides for the embodiment of the present invention three;
The structural representation of the optical module 400 that Fig. 4 provides for the embodiment of the present invention four;
The structural representation of the optical module 500 that Fig. 5 provides for the embodiment of the present invention five;
The structural representation of the optical module 600 that Fig. 6 provides for the embodiment of the present invention six.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The flow chart of the fiber failure localization method that Fig. 1 provides for the embodiment of the present invention one.The method of the present embodiment is applicable to the fiber failure in EPON to carry out the accurately situation of location.The method is carried out by ONU optical module, and this ONU optical module is realized in the mode of hardware and/or software conventionally.The method of the present embodiment comprises the steps:
110,, according to the test command receiving, control transmitter module emissioning testing signal.
OLT be first handed down to by test command in the control centre of fault diagnosis system, then by OLT, this test command is transmitted to ONU, by ONU, according to the test command receiving, controls transmitter module emissioning testing signal.Due to optical fiber distribution network (Optical Distribution Network, abbreviation ODN) fault causes in the not online situation of ONU, because OLT can not normally be transmitted to ONU by test command, need to carry out manual intervention in ONU side in such cases and control transmitter module emissioning testing signal to transport module, also because the user that causes of ODN fault reports when barrier, the attendant of operator can guide user to initiate fault test from ONU, test result is informed to the attendant of operator, by the attendant of operator, according to diagnosis, judge ODN line fault or the equipment fault of user's family, thereby determine whether to want on-site maintenance, thereby reduce the fault restoration rate of visiting.
120, by transport module by test signal and uplink service optical signal transmission the optical fiber interface to optical network unit, and the reflection and/or the scattered light signal that the optical fiber interface of optical network unit are received by transport module are sent to receiver module.
130, at receiver module, receive reflection and/or scattered light signal and reflection and/or scattered light signal are sent to signal acquisition module, and by signal acquisition module, reflection and/or scattered light signal are carried out after data processing, receive the result of signal acquisition module to reflection and/or scattered light signal.
140,, according to the comparison result of result and benchmark result, determine the region of breaking down.
The fiber failure localization method that the present embodiment provides, the test command receiving by basis, control transmitter module emissioning testing signal, by transport module by test signal and uplink service optical signal transmission the optical fiber interface to optical network unit, and the reflection and/or the scattered light signal that the optical fiber interface of optical network unit are received by transport module are sent to receiver module, at receiver module, receive reflection and/or scattered light signal and reflection and/or scattered light signal are sent to signal acquisition module, and by signal acquisition module, reflection and/or scattered light signal are carried out after data processing, receive the result of signal acquisition module to reflection and/or scattered light signal, according to the comparison result of result and benchmark result, determine the region of breaking down.Thereby realized accurate identification branch optical fiber fault.
The present embodiment be take above-described embodiment one as basis, is further optimized.Transmitter module in above-described embodiment one can be the first reflector, and transport module can comprise the first circulator and first wave division multiplexer, and receiver module can be the first receiver.The flow chart of the fiber failure localization method that Fig. 2 provides for the embodiment of the present invention two.Referring to Fig. 2, the method for the present embodiment can comprise the steps:
210,, according to the test command receiving, control the first reflector emissioning testing signal.
ONU optical module, according to the test command that receives, is controlled the first reflector and is sent the test signal that wavelength is 1310nm, and wherein, test signal is that control module is controlled first driver drives the first reflector and is sent to the first circulator.
The test signal of 220, by the first circulator, first wave division multiplexer, the first reflector being launched and uplink service optical signal transmission are to the optical fiber interface of optical network unit, and the reflection and/or the scattered light signal that the optical fiber interface of optical network unit are received by first wave division multiplexer, described the first circulator are sent to the first receiver.
Wherein, uplink service light signal is that optical network unit is controlled the second driver and is sent to the first circulator.Reflection and/or scattered light signal (wavelength is 1310nm) during the uplink service light signal process ODN optical fiber that is 1310nm by the wavelength containing test signal are delivered to the first receiver through first wave division multiplexer, the first circulator.
Further, test signal is identical with the wavelength of uplink service light signal, it should be noted that, the present embodiment be take at present the most widely used 2.5G PON and is described as example, also be the wavelength (wavelength of uplink service light signal is 1310nm) that the wavelength of test signal equals uplink service light signal, but along with the development of PON technology of future generation, the variation of business wavelength of optical signal, the scheme that the present embodiment provides is applicable equally, the restriction that not changed by service wavelength.
230, at the first receiver, receive reflection and/or scattered light signal and reflection and/or scattered light signal are sent to signal acquisition module, and by signal acquisition module, reflection and/or scattered light signal are carried out after data processing, receive the result of signal acquisition module to reflection and/or scattered light signal.
Wherein, signal acquisition module is carried out data processing and can be realized in the following way reflection and/or scattered light signal:
Signal acquisition module adopts filtering and analog-to-digital conversion to carry out data processing to reflection and/or scattered light signal.
240,, according to the comparison result of result and benchmark result, determine the region of breaking down.
The fiber failure localization method that the present embodiment provides, the test command receiving by basis, control the first reflector emissioning testing signal, by the first circulator, first wave division multiplexer is the optical fiber interface to optical network unit by test signal and uplink service optical signal transmission, and by first wave division multiplexer, reflection and/or scattered light signal that described the first circulator receives the optical fiber interface of optical network unit are sent to the first receiver, at the first receiver, receive reflection and/or scattered light signal and reflection and/or scattered light signal are sent to signal acquisition module, and by signal acquisition module, reflection and/or scattered light signal are carried out after data processing, receive the result of signal acquisition module to reflection and/or scattered light signal, according to the comparison result of result and benchmark result, determine the region of breaking down.Thereby realized accurate identification branch optical fiber fault, and in the situation that the splitting ratio of optical splitter is high, also accurate detection branches fiber failure.
The present embodiment be take above-described embodiment one as basis, is further optimized.Transmitter module in above-described embodiment one can comprise the second reflector and the 3rd reflector, and transport module can comprise the second circulator and Second Wave division multiplexer, and receiver module can be the second receiver.The flow chart of the fiber failure localization method that Fig. 3 provides for the embodiment of the present invention three.Referring to Fig. 3, the method for the present embodiment can comprise the steps:
310,, according to the test command receiving, control the second reflector emissioning testing signal.
ONU optical module, according to the test command receiving, is controlled the second reflector and is sent the test signal that wavelength is 1625nm or 1650nm, and wherein, test signal is that control module control the 3rd driver drives the second reflector is emitted to the second circulator.
320, by the second circulator, Second Wave division multiplexer, the test signal of the second reflector transmitting is transferred to the optical fiber interface of optical network unit, the uplink service optical signal transmission of the 3rd reflector being launched by Second Wave division multiplexer is to the optical fiber interface of optical network unit, and the reflection and/or the scattered light signal that the optical fiber interface of described optical network unit are received by Second Wave division multiplexer, the second circulator are sent to the second receiver.
Wherein, uplink service light signal is that optical network unit control the 4th driver drives the 3rd reflector is sent to Second Wave division multiplexer.
Further, the wavelength of test signal and uplink service light signal is not identical, is the not multiplexing uplink service light signal of test signal yet.It should be noted that, the present embodiment be take at present the most widely used 2.5GPON and is described as example, also the wavelength that is test signal adopts 1625nm or 1650nm, and the wavelength of uplink service light signal is 1310nm, but the development along with PON technology of future generation, the variation of business wavelength of optical signal, the scheme that the present embodiment provides is applicable equally, the restriction that not changed by service wavelength.
330, at the second receiver, receive reflection and/or scattered light signal and reflection and/or scattered light signal are sent to signal acquisition module, and by signal acquisition module, reflection and/or scattered light signal are carried out after data processing, receive the result of signal acquisition module to reflection and/or scattered light signal.
Wherein, signal acquisition module is carried out data processing and can be realized in the following way reflection and/or scattered light signal:
Signal acquisition module adopts filtering and analog-to-digital conversion to carry out data processing to reflection and/or scattered light signal.
340,, according to the comparison result of result and benchmark result, determine the region of breaking down.
The fiber failure localization method that the present embodiment provides, the test command receiving by basis, control the second reflector emissioning testing signal, by the second circulator, Second Wave division multiplexer transfers to the test signal of the second reflector transmitting the optical fiber interface of optical network unit, the uplink service optical signal transmission of the 3rd reflector being launched by Second Wave division multiplexer is to the optical fiber interface of optical network unit, and by Second Wave division multiplexer, the second circulator reflection and/or scattered light signal that just the optical fiber interface of optical network unit receives are sent to the second receiver, at the second receiver, receive reflection and/or scattered light signal and reflection and/or scattered light signal are sent to signal acquisition module, and by signal acquisition module, reflection and/or scattered light signal are carried out after data processing, receive the result of signal acquisition module to reflection and/or scattered light signal, according to the comparison result of result and benchmark result, determine the region of breaking down.Thereby realized accurate identification branch optical fiber fault, and in the situation that the splitting ratio of optical splitter is high, also accurate detection branches fiber failure.
The fiber failure localization method providing for realizing above-described embodiment, most crucial problem is to realize the inner integrated OTDR test function of ONU optical module, ODN fault location means, by traditional changing to from ONU side initiation OTDR and test from the initiation of OLT side, are reached to the object of accurate location branch optical fiber fault.Below in conjunction with accompanying drawing, introduce the structure of the ONU optical module adopting in above-described embodiment, the structure of the ONU optical module adopting, the structural representation of the optical module 400 that Fig. 4 provides for the embodiment of the present invention four in first this introduce embodiment mono-in conjunction with Fig. 4.Referring to Fig. 4, control module 401, for according to the test command receiving, is controlled transmitter module 402 emissioning testing signals; Transmitter module 402 for emissioning testing signal and uplink service light signal to transport module 403; Transport module 403 is for the optical fiber interface to optical network unit by the test signal of transmitter module 402 transmitting and uplink service optical signal transmission, and reflection and/or scattered light signal that the optical fiber interface of optical network unit is received are sent to receiver module 404; Control module 401 is also for receiving reflection and/or scattered light signal and reflection and/or scattered light signal being sent to signal acquisition module 405 at receiver module 404, and undertaken after data processing by 405 pairs of reflections of signal acquisition module and/or scattered light signal, receive the result of 405 pairs of reflections of signal acquisition module and/or scattered light signal; According to the comparison result of result and benchmark result, determine the region of breaking down.
The optical module that the present embodiment provides, can carry out the fiber failure localization method that above-described embodiment one provides.It realizes principle and technique effect is similar, repeats no more herein.
The present embodiment be take above-described embodiment four as basis, is further optimized.The structural representation of the optical module 500 that Fig. 5 provides for the embodiment of the present invention five.With reference to Fig. 5, it should be noted that, the transmitter module 402 in Fig. 4 can be the first reflector 501 shown in Fig. 5, and transport module 403 can comprise the first circulator 502 and first wave division multiplexer 503, and receiver module 404 can be the first receiver 504, wherein:
The first circulator 502, be connected with the first reflector 501, first wave division multiplexer 503 and the first receiver 504 respectively, for by test signal and uplink service light signal guiding first wave division multiplexer 503, and the reflection optical fiber interface of optical network unit being received by first wave division multiplexer 503 and/or scattered light signal first receiver 504 that leads.It should be noted that, the fibre circuit of the optical fiber interface that reflection and/or scattered light signal are optical network unit between OLT and ONU receives.
First wave division multiplexer 503, respectively with the first circulator 502, the optical fiber interface of optical network unit is connected with the 3rd receiver 505, for the optical fiber interface to optical network unit by the test signal from first ring shape device 502 and uplink service optical signal transmission, and the downlink business light signal that the optical fiber interface of optical network unit is received is sent to the 3rd receiver 505, by the 3rd receiver 505, convert downlink business light signal to the signal of telecommunication, and be sent to limiting amplifier 508, after amplifying shaping, 508 pairs of downlink business light signals of limiting amplifier export high speed signal to ONU, first wave division multiplexer 503 reflection and/or scattered light signal that the optical fiber interface from optical network unit is received are sent to the first circulator 502, then by the first circulator 502, reflection and/or scattered light signal are sent to the first receiver 504, the first receiver 504 sends to signal acquisition module 405 to process reflection and/or scattered light signal.
Further, test signal is that control module 401 control the first drivers 506 drive the first reflectors 501 to be sent to the first circulator 502, and uplink service light signal is that the second driver 507 being connected with optical network unit drives the first reflectors 501 to be sent to the first circulator 502.
Further, test signal is identical with the wavelength of uplink service light signal, it should be noted that, the present embodiment be take at present the most widely used 2.5G PON and is described as example, also be the wavelength (wavelength of uplink service light signal is 1310nm) that the wavelength of test signal equals uplink service light signal, but along with the development of PON technology of future generation, the variation of business wavelength of optical signal, the scheme that the present embodiment provides is applicable equally, the restriction that not changed by service wavelength.
The optical module that the present embodiment provides, the optical module that the present embodiment provides, can carry out the fiber failure localization method that above-described embodiment two provides.It realizes principle and technique effect is similar, repeats no more herein.
The present embodiment be take above-described embodiment four as basis, is further optimized.The structural representation of the optical module 600 that Fig. 6 provides for the embodiment of the present invention six.With reference to Fig. 6, it should be noted that, the transmitter module 402 in Fig. 4 can comprise the second reflector 601 and the 3rd reflector 602, and transport module 403 can be for comprising the second circulator 603 and Second Wave division multiplexer 604, receiver module 404 can be the second receiver 605, wherein:
The second circulator 603, be connected with the second reflector 601, Second Wave division multiplexer 604 and the second receiver 605 respectively, for test signal is transferred to Second Wave division multiplexer 604, and reflection and/or scattered light signal that the optical fiber interface of optical network unit is received by Second Wave division multiplexer 604 are sent to the second receiver 605.
Second Wave division multiplexer 604, respectively with the second circulator 603, the optical fiber interface of optical network unit, described the 3rd reflector 602 is connected with the 4th receiver 606, for by the test signal from the second circulator 603 and from the uplink service optical signal transmission of the 3rd reflector 602 optical fiber interface to optical network unit, and the downlink business light signal that the optical fiber interface of optical network unit is received is sent to the 4th receiver 606, by the 4th receiver 606, convert downlink business light signal to the signal of telecommunication and be sent to limiting amplifier 609 by the 4th receiver 606, after amplifying shaping, 609 pairs of downlink business light signals of limiting amplifier export high speed signal to ONU, Second Wave division multiplexer 604 reflection and/or scattered light signal that the optical fiber interface of optical network unit is received are sent to the second circulator 603, then by the second circulator 603, reflection and/or scattered light signal are sent to the second receiver 605, the second receiver 605 sends to signal acquisition module 405 to process reflection and/or scattered light signal.It should be noted that, the fibre circuit of the optical fiber interface that reflection and/or scattered light signal are optical network unit between OLT and ONU receives.
Further, test signal is that control module 401 control the 3rd drivers 607 drive the second reflectors 601 to be emitted to the second circulator 603, and uplink service light signal is that the 4th driver 608 being connected with optical network unit drives the 3rd reflectors 602 to be sent to Second Wave division multiplexer 604.
Further, the wavelength of test signal and uplink service light signal is not identical, and the wavelength of test signal and uplink service light signal is not identical, is the not multiplexing uplink service light signal of test signal yet.It should be noted that, the present embodiment be take at present the most widely used 2.5G PON and is described as example, also the wavelength that is test signal adopts 1625nm or 1650nm, and the wavelength of uplink service light signal is 1310nm, but the development along with PON technology of future generation, the variation of business wavelength of optical signal, the scheme that the present embodiment provides is applicable equally, the restriction that not changed by service wavelength.
The optical module that the present embodiment provides, can carry out the fiber failure localization method that above-described embodiment three provides.It realizes principle and technique effect is similar, repeats no more herein.
It should be noted that, the embodiment of the present invention also provides a kind of optical network unit, and this optical network unit can comprise any one optical module of mentioning in above-described embodiment.It realizes principle and technique effect is similar, repeats no more herein.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each embodiment of the method can complete by the relevant hardware of program command.Aforesaid program can be stored in a computer read/write memory medium.This program, when carrying out, is carried out the step that comprises above-mentioned each embodiment of the method; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
Finally it should be noted that: each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit above; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (15)
1. a fiber failure localization method, is characterized in that, comprising:
According to the test command receiving, control transmitter module emissioning testing signal;
By transport module by described test signal and uplink service optical signal transmission the optical fiber interface to optical network unit, and the reflection and/or the scattered light signal that the optical fiber interface of described optical network unit are received by described transport module are sent to receiver module;
At described receiver module, receive described reflection and/or scattered light signal and described reflection and/or scattered light signal are sent to signal acquisition module, and by described signal acquisition module, described reflection and/or scattered light signal are carried out after data processing, receive the result of described signal acquisition module to described reflection and/or scattered light signal;
According to the comparison result of described result and benchmark result, determine the region of breaking down.
2. method according to claim 1, is characterized in that, described transmitter module is the first reflector, and the test command that described basis receives is controlled transmitter module emissioning testing signal, comprising:
According to the described test command receiving, control described the first reflector and launch described test signal;
Described transport module comprises the first circulator and first wave division multiplexer, described receiver module is the first receiver, described by transport module by described test signal and uplink service optical signal transmission the optical fiber interface to optical network unit, and by described transport module, reflection and/or the scattered light signal of the optical fiber interface reception of described optical network unit are sent to receiver module, comprising:
The described test signal of described the first reflector being launched by described the first circulator, described first wave division multiplexer and uplink service optical signal transmission are to the optical fiber interface of optical network unit, and the reflection and/or the scattered light signal that the optical fiber interface of described optical network unit are received by described first wave division multiplexer, described the first circulator are sent to described the first receiver.
3. method according to claim 2, it is characterized in that, described test signal is that control module is controlled the first reflector described in the first driver drives and is sent to described the first circulator, and described uplink service light signal is that optical network unit is controlled the second driver and is sent to described the first circulator.
4. according to the method in claim 2 or 3, it is characterized in that, described test signal is identical with the wavelength of described uplink service light signal.
5. method according to claim 1, is characterized in that, described transmitter module comprises the second reflector and the 3rd reflector, and the test command that described basis receives is controlled transmitter module emissioning testing signal, comprising:
According to the described test command receiving, control described the second reflector and launch described test signal;
Described transport module comprises the second circulator and Second Wave division multiplexer, described by transport module by described test signal and uplink service optical signal transmission the optical fiber interface to optical network unit, and by described transport module, reflection and/or the scattered light signal of the optical fiber interface reception of described optical network unit are sent to receiver module, comprising:
By described the second circulator, described Second Wave division multiplexer, the described test signal of described the second reflector transmitting is transferred to the optical fiber interface of optical network unit, the described uplink service optical signal transmission of described the 3rd reflector being launched by described Second Wave division multiplexer is to the optical fiber interface of optical network unit, and the reflection and/or the scattered light signal that the optical fiber interface of described optical network unit are received by described Second Wave division multiplexer, described the second circulator are sent to described the second receiver.
6. method according to claim 5, it is characterized in that, described test signal is that described control module is controlled the second reflector described in the 3rd driver drives and is emitted to described the second circulator, and described uplink service light signal is that optical network unit is controlled the 3rd reflector described in the 4th driver drives and is sent to described Second Wave division multiplexer.
7. according to the method described in claim 5 or 6, it is characterized in that, the wavelength of described test signal and described uplink service light signal is not identical.
8. an optical module, is characterized in that, comprising: control module, transmitter module and transport module, wherein:
Described control module, for according to the test command receiving, controls described transmitter module emissioning testing signal;
Described transmitter module, for emissioning testing signal and uplink service light signal to described transport module;
Described transport module, for the optical fiber interface to optical network unit by the described test signal of described transmitter module transmitting and uplink service optical signal transmission, and reflection and/or scattered light signal that the optical fiber interface of described optical network unit is received are sent to receiver module;
Described control module, also for receiving described reflection and/or scattered light signal at described receiver module and described reflection and/or scattered light signal being sent to signal acquisition module, and by described signal acquisition module, described reflection and/or scattered light signal are carried out after data processing, receive the result of described signal acquisition module to described reflection and/or scattered light signal; According to the comparison result of described result and benchmark result, determine the region of breaking down.
9. optical module according to claim 8, is characterized in that, described transmitter module is the first reflector, and described transport module comprises the first circulator and first wave division multiplexer, and described receiver module is the first receiver, wherein:
Described the first circulator, be connected with described the first reflector, described first wave division multiplexer and described the first receiver respectively, for described first wave division multiplexer that described test signal and uplink service light signal are led, and the described reflection that the optical fiber interface of described optical network unit is received by described first wave division multiplexer and/or scattered light signal described the first receiver that leads;
Described first wave division multiplexer, be connected with the 3rd receiver with the optical fiber interface of described the first circulator, described optical network unit respectively, for the optical fiber interface to described optical network unit by the described test signal from described the first circulator and uplink service optical signal transmission, and the downlink business light signal of the optical fiber interface reception of described optical network unit is sent to described the 3rd receiver, and described reflection and/or scattered light signal that the optical fiber interface of described optical network unit is received are sent to described the first circulator.
10. optical module according to claim 9, it is characterized in that, described test signal is that described control module is controlled the first reflector described in the first driver drives and is sent to described the first circulator, and described uplink service light signal is sent to described the first circulator for the first reflector described in the second driver drives being connected with described optical network unit.
11. according to the optical module described in claim 9 or 10, it is characterized in that, described test signal is identical with the wavelength of described uplink service light signal.
12. optical modules according to claim 8, is characterized in that, described transmitter module comprises the second reflector and the 3rd reflector, and described transport module comprises the second circulator and Second Wave division multiplexer, and described receiver module is the second receiver, wherein:
Described the second circulator, be connected with described the second reflector, described Second Wave division multiplexer and described the second receiver respectively, for described test signal is transferred to described Second Wave division multiplexer, and described reflection and/or scattered light signal that the optical fiber interface of described optical network unit is received by described Second Wave division multiplexer are sent to described the second receiver;
Described Second Wave division multiplexer, respectively with described the second circulator, the optical fiber interface of described optical network unit, described the 3rd reflector is connected with the 4th receiver, for by the described test signal from described the second circulator and from the described uplink service optical signal transmission of described the 3rd reflector the optical fiber interface to described optical network unit, and the downlink business light signal that the optical fiber interface of described optical network unit is received is sent to described the 4th receiver, and described reflection and/or scattered light signal that the optical fiber interface of described optical network unit is received are sent to described the second circulator.
13. optical modules according to claim 12, it is characterized in that, described test signal is that described control module is controlled the second reflector described in the 3rd driver drives and is emitted to described the second circulator, and described uplink service light signal is sent to described Second Wave division multiplexer for the 3rd reflector described in the 4th driver drives being connected with described optical network unit.
14. according to the optical module described in claim 12 or 13, it is characterized in that, the wavelength of described test signal and described uplink service light signal is not identical.
15. 1 kinds of optical network units, is characterized in that, comprise the optical module as described in any one in claim 8～14.
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