CN102064904A - Service transmission method, system and device of multi-service shared optical distribution network (ODN) - Google Patents
Service transmission method, system and device of multi-service shared optical distribution network (ODN) Download PDFInfo
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- CN102064904A CN102064904A CN2009102123700A CN200910212370A CN102064904A CN 102064904 A CN102064904 A CN 102064904A CN 2009102123700 A CN2009102123700 A CN 2009102123700A CN 200910212370 A CN200910212370 A CN 200910212370A CN 102064904 A CN102064904 A CN 102064904A
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Abstract
The invention discloses a service transmission method, a system and a device of a multi-service shared optical distribution network (ODN). The service transmission method comprises the following steps: receiving a downlink optical signal transmitted by a branch optical fiber, wherein, the downlink optical signal comprises a PON (passive optical network) service downlink optical signal and a non-PON service downlink optical signal through wavelength division multiplexing; separating the PON service downlink optical signal from the non-PON service downlink optical signal in the downlink optical signal, and providing the separated PON service downlink optical signal to a PON service terminal; and acquiring a corresponding optical signal which can be identified by a non-PON service terminal from the separated non-PON service signal according to the wavelength information configured at the PON service terminal, and sending the acquired optical signal to the non-PON service terminal. By utilizing the technical proposal, the network construction complexity is reduced, thus facilitating equipment maintenance.
Description
Technical field
The present invention relates to communication technical field, be specifically related to business transmitting method, system and device that Optical Distribution Network is shared in a kind of multi-service.
Background technology
EPON (PON, Passive Optical Network) as a kind of emerging broadband access optical fiber technology, owing to adopted the mode of point-to-multipoint, reduced the quantity of trunk optical fiber, reduced the laying cost of optical fiber significantly, improved the integrated level of PON network side optical line terminal (OLT, Optical Line Terminal) equipment.And, owing to do not have active equipment in the user side Optical Distribution Network (ODN, Optical Distribution Network) among the PON, simplified the maintenance of ODN.Based on the concrete above-mentioned advantage of PON, the PON technology is accepted by increasing operator, and the construction of PON is also in expansion like a raging fire.
In existing Access Network, surf the Net except realizing the Internet, telephone service, cable television service also will realize radio communication service, mobile communication business etc.If every kind of business is all laid the optical fiber of oneself, then be significant wastage to resource.Most economical method is the ODN of the shared PON of multiple business, and wherein, main implementation has two kinds, and a kind of is time division multiplexing, and a kind of is wavelength division multiplexing.If the employing time division multiplexing will improve the transmission rate that has PON now, change the equipment of existing PON, cost is very high.Usually adopt wavelength-division multiplex technique in the prior art, only need increase wavelength division component in existing P ON, the equipment of original PON does not need to change, and the application of wavelength division multiplexer is also very flexible, and different multiplex modes can be selected according to the characteristics of oneself by operator.
As shown in Figure 1, the multi-service of prior art is shared the communication system of ODN when realizing the operation of down direction transmission information, PON business (being specially the downlink optical signal that OLT provides) and other service signal (be the professional corresponding downlink optical signal of non-PON, specifically can be provided respectively by a plurality of controllers) carry out exporting to optical splitter after the wavelength division multiplexing operation at the wavelength division multiplexer of network side.Wherein, for avoiding the wavelength conflict, the wavelength of the downlink optical signal that each controller sends must guarantee it is different, and the wavelength of the downlink optical signal of each controller transmission is also different with the wavelength of the downlink optical signal of OLT transmission.Then, by optical splitter downlink optical signal is directly sent to the ONT or the ONU of user side, optical splitter also sends to downlink optical signal the wavelength division multiplexer of user side; The user side wavelength division multiplexer is separated wavelength division multiplexing operation to the downlink optical signal that receives, and will separate the non-PON service terminal that downlink optical signal behind the wavelength division multiplexing sends to ONT (perhaps ONU) and correspondence respectively.
As mentioned above, for avoiding the wavelength conflict must have nothing in common with each other at the wavelength that the different controllers of network side use, just can reduce the interference between the miscellaneous service light signal, that is to say, what controllers are arranged, will use what wavelength, and the employed wavelength of controller is identical with the wavelength that the port of network side wavelength division multiplexer allows.And, for the service terminal that guarantees user side can receive the corresponding service data, every kind of professional corresponding user side wavelength division multiplexer that uses must be different in this system, this has increased the kind of the stock equipment of Virtual network operator, be unfavorable for the maintenance of equipment, in other words increased the maintenance cost of equipment.
Summary of the invention
For overcoming the above problems, the embodiment of the invention provides a kind of multi-service to share business transmitting method, system and the device of Optical Distribution Network.
The business transmitting method of Optical Distribution Network is shared in a kind of multi-service, comprise: receive road downlink optical signal by the branch optical fiber transmission, this road downlink optical signal comprises by the professional downlink optical signal of PON of wavelength division multiplexing and the professional downlink optical signal of non-PON, the professional downlink optical signal of wherein said non-PON is different with the wavelength of the professional downlink optical signal of PON, and the professional downlink optical signal of described non-PON is with different by the professional downlink optical signal signal wavelength of the non-PON of other branch optical fiber transmission; The professional downlink optical signal of PON in this road downlink optical signal is separated with non-PON service signal downlink optical signal, and the professional downlink optical signal of the PON after will separating offers the PON service terminal; According to the wavelength information of described PON service terminal configuration, the non-PON service signal after described separating obtains the corresponding discernible light signal of non-PON service terminal, and the light signal that is obtained is sent to described non-PON service terminal.
The optical communication apparatus of Optical Distribution Network is shared in a kind of multi-service, comprises second wavelength division multiplexer and deriving means; Described second wavelength division multiplexer, be used to receive road downlink optical signal by the branch optical fiber transmission, this road downlink optical signal comprises by the professional downlink optical signal of PON of wavelength division multiplexing and the professional downlink optical signal of non-PON, the professional downlink optical signal of PON in this road downlink optical signal is separated with non-PON service signal downlink optical signal, and the professional downlink optical signal of the PON after will separating offers the PON service terminal, the professional downlink optical signal of wherein said non-PON is different with the wavelength of the professional downlink optical signal of PON, and the professional downlink optical signal of described non-PON is with different by the professional downlink optical signal signal wavelength of the non-PON of other branch optical fiber transmission; Described deriving means is used for the wavelength information according to described PON service terminal configuration, and the non-PON service signal after described separating obtains the corresponding discernible light signal of non-PON service terminal, and the light signal that is obtained is sent to described non-PON service terminal.
The optical communication system of Optical Distribution Network is shared in a kind of multi-service, comprising: wavelength shifter, first wavelength division multiplexer, optical splitter, second wavelength division multiplexer and deriving means; Described wavelength shifter, be used to receive the professional downlink optical signal of a plurality of non-PON, and the professional downlink optical signal of described a plurality of non-PON is carried out wavelength Conversion handle, so that the wavelength difference between the professional downlink optical signal of described a plurality of non-PON, and the professional downlink optical signal of described non-PON is different with the wavelength of the professional downlink optical signal of PON; Described first wavelength division multiplexer, the professional downlink optical signal of non-PON after being used for the professional downlink optical signal of described PON and wavelength Conversion handled carries out the wavelength division multiplexing operation, and exports to described optical splitter by the downstream signal of trunk optical fiber after with the wavelength division multiplexing operation; Described optical splitter, it is connected to described first wavelength division multiplexer by described trunk optical fiber, and is connected to described second wavelength division multiplexer by branch optical fiber, is used for the light signal after the described wavelength division multiplexing operation is carried out light-splitting processing to generate the light signal of multichannel; Described second wavelength division multiplexer, be used to receive one road light signal of described optical splitter output, professional downlink optical signal of PON in this road light signal and the professional downlink optical signal of non-PON are separated, and the professional downlink optical signal of the PON after will separating offers the PON service terminal; Described deriving means, be used for wavelength information according to described PON service terminal configuration, obtain the discernible downlink optical signal of non-PON service terminal of its correspondence from the described professional downlink optical signal of non-PON after separately, and the downlink optical signal that is obtained is sent to described non-PON service terminal.
The embodiment of the invention has realized that multi-service shares Optical Distribution Network, and receive downlink optical signal from branch optical fiber and with PON professional and non-PON is professional separate after, can utilize the wavelength information of PON service terminal configuration, obtain the corresponding discernible light signal of non-PON service terminal from non-PON business, and the light signal that is obtained sent to described non-PON service terminal, guarantee that the user side service terminal can receive the corresponding service data.As seen, the embodiment of the invention need not to adopt different wavelength division multiplexers at different business at user side, therefore adopts the embodiment of the invention can reduce the maintenance cost of equipment.And, in the optical communication system that the embodiment of the invention provides, the professional downlink optical signal of various non-PON had carried out controlled wavelength Conversion before issuing, this can realize the white light conversion that the local side controller sends is become glory, guarantees between the miscellaneous service wavelength conflict not to take place by this wavelength Conversion.Therefore, the emission wavelength of the controller of local side can be identical in the described optical communication system, such as, described local side controller can all adopt white light as emission light, and this can further reduce the complexity of networking, is convenient to the maintenance to equipment.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the simplified schematic diagram of optical communication system in the prior art;
Fig. 2 is the simplified schematic diagram of a kind of optical communication system of providing of the embodiment of the invention;
Fig. 3 is the logical block simplified schematic diagram of a kind of optical line terminal of providing of the embodiment of the invention;
Fig. 4 is the logical block simplified schematic diagram of a kind of boxcar of providing of the embodiment of the invention;
Fig. 5 is a kind of transmission method general flow chart that the embodiment of the invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of multi-service to share the optical communication system of Optical Distribution Network, the embodiment of the invention also provides corresponding business transmitting method and optical communication equipment, the technical scheme that the embodiment of the invention provides, solve the complexity height of networking in the prior art, and be unfavorable for the problem of the maintenance of equipment.Below be elaborated respectively.
Embodiment one,
The embodiment of the invention provides a kind of optical communication system, this system can comprise at least two subsystems, such as PON subsystem and non-PON subsystem, wherein, described PON subsystem and non-PON subsystem can be realized the communication between local side and the user side by the mode of sharing Optical Distribution Network (ODN, Optical Distribution Network).Particularly, the PON subsystem can generate the PON service signal that sends with OLT by the ODN of itself and be transferred to PON service terminal (such as ONT or ONU); But not other business that the PON subsystem provides (are called for short " non-PON business ", having can be telephone service, mobile communication business, television services, radio communication service or the like) with the professional shared described ODN of PON, to realize that the non-PON service signal that the local side controller sends is transferred to corresponding non-PON service terminal.
As shown in Figure 2, this optical communication system comprises: controller 201, the first photoelectricity photoconverters 202, optical line terminal 203, the first wavelength division multiplexers 204, optical splitter 205, the second wavelength division multiplexers 206, deriving means 207.
Wherein, controller 201 can be for one or more than one, and it can be radio equipment controller (REC, Radio Equipment Controller), also can be miscellaneous equipment, should not be construed the restriction to inventive embodiments herein.Embodiment can think that each controller is used for a kind of non-PON business for a better understanding of the present invention.Such as, can think among Fig. 2 has m controller, is respectively applied for m other business.Wherein, controller 1 is used for telephone service, and controller 2 is used for mobile communication business, and controller 3 is used for the Internet business of networking etc.The wavelength of the downlink optical signal that these controllers 201 send can be identical or part is identical, also can be different.Such as, these controllers 201 can all adopt the controller of emission white light.In specific embodiment, the wavelength of the downlink optical signal that each controller 201 sends can be 850 nanometers (nm) usually, 1310nm, and perhaps 1550nm is wherein any.It will be appreciated that controller 201 employed wavelength can also other, should not be construed restriction herein to the embodiment of the invention.
The first photoelectricity photoconverter 202, it is as wavelength shifter, the wavelength of wavelength Conversion for being provided with of the professional downlink optical signal of non-PON that is used for receiving, and the non-PON business downlink optical signal after utilizing the wavelength of described setting change sends to first wavelength division multiplexer 204.
Wherein, the wavelength of wavelength Conversion for being provided with of the downlink optical signal that in the first photoelectricity photoconverter 202 controller 201 is sent specifically can comprise: downlink optical signal is converted to the signal of telecommunication, then with the light signal of electrical signal conversion for the wavelength of setting.The wavelength of conversion back light signal will be in the free transmission range of first wavelength division multiplexer, 204 some ports.Further, the wavelength that the downlink optical signal that the first photoelectricity photoconverter 202 sends for each controller 201 carries out after wavelength Conversion is handled is different, also can be understood as the wavelength of each controller 201 corresponding setting, the wavelength of each setting is different, thus, the white light conversion that described controller 201 can be sent of the described first photoelectricity photoconverter 202 is a glory.And the wavelength after the conversion can not be identical with the operation wavelength (wherein, the operation wavelength of PON comprises: uplink optical signal wavelength and downlink optical signal wavelength) of PON.M professional downlink optical signal of non-PON and the professional downlink optical signal of PON are transmitted in ODN simultaneously, thereby reduce the possibility that occurs the wavelength conflict between the miscellaneous service signal.
Need to prove that also the wavelength of above-mentioned setting can be according to the designer requirement of this optical communication system to be provided with.
Further, electrical signal conversion is the process of light signal in the first photoelectricity photoconverter 202, can realize by the laser of concrete fixed wave length in the first photoelectricity photoconverter 202, can realize that also the emission wavelength of wherein said tunable laser specifically can be provided with by optical line terminal 203 by the adjustable tunable laser of the first photoelectricity photoconverter, 202 medium wavelengths.If use the laser of fixed wave length, need the laser of various fixed wavelength so in the first photoelectricity photoconverter 202, and need strict coupling between the port of the output port of each laser and first wavelength division multiplexer 204.If use tunable laser, only need a plurality of identical tunable lasers so in the first photoelectricity photoconverter 202, their emission wavelength can be configured to any wavelength by optical line terminal 203, therefore can arbitrarily connect between the port of a plurality of output ports of the first photoelectricity photoconverter 202 and first wavelength division multiplexer 204, simplify the process that the first photoelectricity photoconverter 202 is connected with first wavelength division multiplexer 204.Optical line terminal (OLT) 203 is used to send the professional downlink optical signal of PON to first wavelength division multiplexer 204.
It will be appreciated that, optical line terminal 203 sends to the wavelength of the downlink optical signal of first wavelength division multiplexer 204, the wavelength that sends to the downlink optical signal of first wavelength division multiplexer 204 with the first photoelectricity photoconverter 202 is different, and the wavelength that optical line terminal 203 sends to the downlink optical signal of first wavelength division multiplexer 204 specifically can be 1490nm.First wavelength division multiplexer 204, be used to receive professional downlink optical signal of non-PON and the professional downlink optical signal of PON after the wavelength Conversion, the downlink optical signal of the various wavelength that receive is carried out the wavelength division multiplexing operation, the downlink optical signal after the wavelength division multiplexing operation is exported to optical splitter 205.Wherein, first wavelength division multiplexer 204 converges to a public port output with the downlink optical signal of a plurality of different wave lengths, realizes wavelength division multiplexing, is transferred to optical splitter 205.Optical splitter 205, it is connected to described first wavelength division multiplexer 204 by described trunk optical fiber, and be connected to described second wavelength division multiplexer 206 by branch optical fiber, be used to receive the downlink optical signal after the wavelength division multiplexing operation that first wavelength division multiplexer 204 sends, the downlink optical signal after the wavelength division multiplexing operation is carried out light-splitting processing to generate light signal and the output more than one tunnel.
Wherein, the concrete operations of optical splitter 205 light-splitting processing can be that the power averaging with one road light signal is assigned on every branch optical fiber, one road light signal is arranged on every branch optical fiber, and branch optical fiber can link to each other with second wavelength division multiplexer 206 respectively, perhaps link to each other with PON terminal (wherein, PON terminal 209 can or be ONT for ONU).
Second wavelength division multiplexer 206, be used to receive one road light signal of optical splitter 205 outputs, with in this road light signal with the professional corresponding downlink optical signal of PON and with separate with the corresponding downlink optical signal of non-PON business, the professional downlink optical signal of PON is separately sent to PON terminal (ONU as shown in Figure 2), and the professional downlink optical signal of the non-PON after will separating sends to deriving means 207.
Such as, if the wavelength of the downlink optical signal that OLT sends is 1490nm, the signal that in second wavelength division multiplexer 206 with wavelength is 1490nm extracts from the light signal that it receives, and itself and non-PON business are separated, and is that the light signal of 1490nm sends to the PON terminal with described wavelength.Thus, the PON terminal just can receive the PON business datum that OLT issues.
Deriving means 207 is used for according to configuration information, from the professional downlink optical signal of non-PON that second wavelength division multiplexer 206 is told, further obtains the discernible light signal of non-PON service terminal of its correspondence, and the light signal that obtains is sent to described service terminal.
Wherein, this deriving means 207 is specially photoelectricity photoconverter (hereinafter referred to as the second photoelectricity photoconverter), and it can comprise: adjustable receiver and electrical to optical converter.
Adjustable receiver, be used for according to described configuration information, from the professional downlink optical signal of non-PON that second wavelength division multiplexer 206 is told, select the light signal of a kind of wavelength corresponding, and the light signal of selecting is converted to the signal of telecommunication and sends to electrical to optical converter with described information.
Configuration information can specifically be to be provided by contiguous PON terminal (such as the ONU that is connected to described second wavelength division multiplexer) in the adjustable receiver.Wherein, ONU can be controlled by OLT by the PON agreement, that is, what OLT can be indirect is provided with adjustable receiver.Should be appreciated that can also have other method to being provided with of adjustable receiver, should not be construed the restriction to the embodiment of the invention herein.
Electrical to optical converter, the electrical signal conversion that is provided by adjustable receiver that is used for receiving is the discernible light signal of non-PON service terminal of its correspondence, and described discernible light signal is sent to described service terminal.
Wherein, electrical to optical converter is that wavelength is 850nm usually with the electrical signal conversion that receives, 1310nm, perhaps 1550nm any light signal wherein.
By described adjustable receiver and electrical to optical converter, just the glory signal extraction corresponding with described service terminal can be come out, and convert the white light signal that it can receive to, thereby realize that sharing Optical Distribution Network with the PON service terminal carries out communicating by letter of non-PON business.
In addition, when the wave-length coverage that can receive when described non-PON service terminal is very big, this deriving means 207 can also adopt tunable filter (TF, Tunable Filter), TF can be according to the described information that sets in advance, make the light signal that has specified wavelength in the downlink optical signal of the non-PON business that described second wavelength division multiplexer 206 is told pass through, thereby it directly is transferred to described non-PON service terminal.Concrete which is selected, can dispose in real time, also can pass through other equipment disposition by contiguous ONU, also can be pre-configured and be kept among the TF.
Further, in specific embodiment, described second wavelength division multiplexer 206 and deriving means 207 can be arranged on a boxcar (Conversion Box).In addition, in other embodiments, described first photoelectricity photoconverter 202 and described first wavelength division multiplexer 204 also can be arranged on described optical line terminal 203 inside.
According to the explanation of above-mentioned a kind of optical communication system that the embodiment of the invention is provided as can be seen, increased by the first photoelectricity photoconverter 202 in the system, because the wavelength of the downlink optical signal that the described first photoelectricity photoconverter 202 can send local side controller corresponding in the non-PON subsystem 201 is reset, therefore, the transmission wavelength that each controller 201 uses can be identical, promptly do not need the wavelength that described controller 201 uses is limited, thus, when construction network, need only and guarantee that described controller 201 can normally be connected with the described first photoelectricity photoconverter 202, thereby reduced the complexity of networking.On the other hand, increased deriving means 207 in the described system, made when user side is separated wavelength division multiplexing to downlink optical signal, only the professional downlink optical signal of non-PON need have been separated getting final product with the professional downlink optical signal of PON, thereby reduced requirement, be convenient to maintenance equipment to the user side wavelength division multiplexer.
Embodiment two,
The embodiment of the invention provides a kind of optical communication system, and wherein, the non-PON business that non-PON subsystem provides is shared Optical Distribution Network (ODN, Optical Distribution Network) with the PON subsystem.Wherein, a kind of optical communication system that the embodiment of the invention provides, be on the basis of the illustrated communication system of embodiment one, further realize the ODN of the shared PON subsystem of the professional uplink optical signal of PON that professional uplink optical signal of the non-PON that non-PON service terminal is sent and PON service terminal send, and be transferred to corresponding local side controller.
Still referring to shown in Figure 2, this optical communication system comprises as embodiment one illustrated: controller 201, the first photoelectricity photoconverters 202, optical line terminal 203, the first wavelength division multiplexers 204, optical splitter 205, the second wavelength division multiplexers 206, deriving means 207;
To the explanation of specifying of above-mentioned each equipment in can reference example one, mainly the difference of present embodiment two with embodiment one described in the following literal.
This optical communication system also comprises: the 3rd photoelectricity photoconverter, it produces wavelength shifter as ripple, be used to receive the uplink optical signal that described non-PON service terminal sends, this uplink optical signal is converted to the signal of telecommunication, be light signal with this electrical signal conversion again with specific wavelength (wavelength promptly is set), wherein, it will be appreciated that the wavelength of the light signal that obtains after the conversion can be provided with by the PON service terminal (as ONT/ONU) of correspondence;
Wherein, the wavelength of the light signal that described non-PON service terminal sends generally is 850nm, 1310nm, perhaps 1550nm.If the quantity of described non-PON business is n, the up wavelength of then described n non-PON service terminal can be an identical wavelength, also can be different several wavelength.
Also need to prove, it is inequality that the up wavelength of common described setting and the first photoelectricity photoconverter 202 send to the wavelength of downlink optical signal of first wavelength division multiplexer 204, also the wavelength to the downlink optical signal of first wavelength division multiplexer 204 that sends with optical line terminal 203 is inequality, and to send to the wavelength of uplink optical signal of second wavelength division multiplexer 206 or optical splitter 205 inequality with described PON service terminal.In addition, processing through the 3rd photoelectricity photoconverter, the wavelength of the uplink optical signal that described non-PON service terminal sends is also inequality with the uplink optical signal that other non-PON service terminals send to its second corresponding wavelength division multiplexer 206, promptly, after the conversion process of the 3rd photoelectricity photoconverter by correspondence, the wavelength between the uplink optical signal of all non-PON service terminals is also all inequality.In addition, the up wavelength of setting will be in the free transmission range of the untapped port of first wavelength division multiplexer.
Wherein, the 3rd photoelectricity photoconverter can specifically realize that by tunable laser with described electrical signal conversion be the uplink optical signal with specific wavelength, and wherein the emission wavelength of tunable laser can be provided with by near ONU.Because described ONU controls by optical line terminal 203, the emission wavelength of the tunable laser in described the 3rd photoelectricity photoconverter can be the equal of to be acted on behalf of by ONU by optical line terminal 203 to dispose.
In specific embodiment, the concrete function of described the 3rd photoelectricity photoconverter can be integrated in the inner realization of the described second photoelectricity photoconverter (that is, described deriving means 207), that is, described deriving means 207 can also be realized above function at up direction.
In addition, second wavelength division multiplexer 206, can also be used to receive the professional uplink optical signal of non-PON that the 3rd photoelectricity photoconverter sends, and the professional uplink optical signal of the PON that receives the transmission of PON terminal, the uplink optical signal that receives is carried out the wavelength division multiplexing operation, and the light signal after the wavelength division multiplexing operation is sent to described optical splitter 205.
Described optical splitter 205 can also be used to receive one or the uplink optical signal that sends more than one second wavelength division multiplexer 206, and receive the uplink optical signal that one or more ONU sends, and sends to first wavelength division multiplexer 204 after all light signals are converged.
First wavelength division multiplexer 204, can also be used to receive the light signal after the converging that optical splitter 205 sends, light signal after converging is carried out the wavelength-division de-multiplex operation, according to wavelength information, the professional uplink optical signal of PON after the wavelength-division de-multiplex operation is sent to optical line terminal 203, and the professional uplink optical signal of non-PON is sent to corresponding non-PON business bureau side controller 201.
Wherein, it will be appreciated that the wavelength information in first wavelength division multiplexer 204 can be preserved in advance, can also can be that other method obtains by optical line terminal 203 configuration in real time also.By described wavelength signals, first wavelength division multiplexer 204 can with carry out after the wavelength-division de-multiplex operation more than one tunnel uplink optical signal, send to corresponding controller 201 and OLT203 respectively.Such as, if obtain after first wavelength division multiplexer, the 204 medium wave decomposition multiplexes operations wherein on the way the wavelength of traveling optical signal be 1310nm, then this road uplink optical signal is sent to optical line terminal 203; The uplink optical signal of other wavelength of obtaining after first wavelength division multiplexer, the 204 medium wave decomposition multiplexes operations is sent to corresponding controller 201 respectively.It will be appreciated that the wave-length coverage of controller 201 receiving optical signals of this moment need comprise the wavelength of other light signal that obtains after the operation of first wavelength division multiplexer, 204 decomposition multiplexes.
Explanation by above-mentioned a kind of optical communication system that the invention process is provided, owing to increased by the 3rd photoelectricity photoconverter in the system, the emission wavelength of non-PON service terminal can be identical, that is, do not need every kind of professional corresponding employed wavelength of non-PON service terminal is limited.Because the 3rd photoelectricity photoconverter can be converted to the different uplink optical signal of wavelength with the upstream signal wavelengths that described non-PON service terminal sends, such as, described non-PON service terminal can be the service terminal of emission white light, by described the 3rd photoelectricity photoconverter, just the white light conversion that described non-PON service terminal can be sent is a glory.Therefore, the employing embodiment of the invention can reduce the transformation to the non-PON service terminal of existing every kind of professional correspondence.
Wherein, preferably, when the receiver wavelength range of controller 201 and first wavelength division multiplexer 204 send wavelength and do not match, this optical communication system can further include: the 4th photoelectricity photoconverter 209, be used to receive the light signal that first wavelength division multiplexer 204 sends, this light signal is converted to the signal of telecommunication, with electrical signal conversion is the light signal that controller 201 can be discerned wavelength, (concrete as: 850nm, 1310nm, perhaps 1550nm), and the uplink optical signal that can discern wavelength that has that will carry out obtaining after the wavelength Conversion send to controller 201.It will be appreciated that also the realization of the 4th electrical to optical converter 209 can be identical with the realization of the first photoelectricity photoconverter 202, can not repeat herein with reference to explanation to the first photoelectricity photoconverter 202.In addition, in other alternate embodiments, the concrete function of described the 4th photoelectricity photoconverter can also be integrated in the described first photoelectricity photoconverter 202 and realize.
Described the 4th photoelectricity photoconverter 209 makes when the wavelength of optical signal of the wave-length coverage of the receiving optical signals of controller 201 and 204 transmissions of first wavelength division multiplexer does not match, also can obtain the upward signal that described non-PON service terminal sends, therefore, compared with prior art, present embodiment can reduce the transformation to controller 201, is convenient to the maintenance to equipment.
Embodiment three,
The embodiment of the invention also provides a kind of optical line terminal (OLT), also can be called a kind of optical communication apparatus, and as shown in Figure 3, this OLT comprises: transmitting element 301, the first photoelectricity optical conversion elements 302 and the first wavelength division multiplexing unit 303.
Wherein, transmitting element 301 is used to send the downlink optical signal corresponding with the PON business to the first wavelength division multiplexing unit 303;
The first photoelectricity optical conversion element 302, of being used for receiving or more than the wavelength of wavelength Conversion for being provided with of the professional corresponding downlink optical signal of a non-PON, and the non-PON business downlink optical signal after will change sends to the first wavelength division multiplexing unit 303;
It will be appreciated that, transmitting element 301 sends to the wavelength of the downlink optical signal of the first wavelength division multiplexing unit 303, the wavelength that sends to the downlink optical signal of the first wavelength division multiplexing unit 303 with the first photoelectricity optical conversion element 302 is different, and the wavelength that transmitting element 301 sends to the downlink optical signal of the first wavelength division multiplexing unit 303 specifically can be 1490nm.
The first wavelength division multiplexing unit 303, each downstream signal that is used for receiving carry out the wavelength division multiplexing operation, and the downlink optical signal after the wavelength division multiplexing operation is exported to optical splitter (figure does not show).
Wherein, the first wavelength division multiplexing unit 303 converges to a public port output with the downstream signal of a plurality of different wave lengths, realizes wavelength division multiplexing, is transferred to optical splitter.
The above-mentioned first photoelectricity optical conversion element 302, the first wavelength division multiplexing unit 303 specifically can be with first illustrated among the embodiment one photoelectricity photoconverter 202, first wavelength division multiplexer 204 is integrated among the OLT, to the first photoelectricity optical conversion element 302, the first wavelength division multiplexing unit 303 more speak more bright can reference example one in the explanation of the first photoelectricity photoconverter, 202, the first wavelength division multiplexers 204.
The first photoelectricity optical conversion element 303 among the described OLT, the downstream signal that each non-PON business bureau side controller can be sent is converted to the different light signal of wavelength, therefore, adopt described OLT when realizing that ODN is shared in multi-service, do not need the wavelength that controller uses is limited, thereby minimizing is to the transformation of existing controller.
Preferably, the first wavelength division multiplexing unit 303 also is used to receive the light signal after the converging that optical splitter sends, and the light signal after converging is carried out the wavelength-division de-multiplex operation, according to wavelength information, the light signal after the wavelength-division de-multiplex operation is sent to receiving element 304 and corresponding controller respectively;
Above-mentioned OLT can also comprise: receiving element 304 is used to receive the light signal that the first wavelength division multiplexing unit 303 sends.
Further, above-mentioned OLT can also comprise: the 4th photoelectricity optical conversion element 305, specifically can be understood as the 4th photoelectricity photoconverter among the embodiment two is integrated among this OLT, therefore, the 4th photoelectricity optical conversion element 305, be used to receive the uplink optical signal that the first wavelength division multiplexing unit 303 sends, this uplink optical signal is converted to the signal of telecommunication, with electrical signal conversion is the light signal that non-PON business bureau side controller can be discerned wavelength, (concrete as: 850nm, 1310nm, perhaps 1550nm), and will have the controller that the light signal that can discern wavelength sends to correspondence.
Further, also comprise among this OLT: dispensing unit 306 is used to dispose the first photoelectricity optical conversion element 302, thereby obtains the wavelength of setting.
Wavelength configuration by described dispensing unit 306, can be so that transmitting element 301 send to the wavelength of the downlink optical signal of the first wavelength division multiplexing unit 303, the wavelength that sends to the downlink optical signal of the first wavelength division multiplexing unit 303 with the first photoelectricity optical conversion element 302 is different; And after the processing of light signal that sends in each non-PON service controller through the first photoelectricity optical conversion element 302, output be the different light signal of wavelength.
In addition, dispensing unit 306 can also be used to dispose the 4th photoelectricity optical conversion element 305, so that the light signal that the 4th photoelectricity optical conversion element 305 receives is converted to the light signal that wavelength is set, the light signal after the output conversion is given corresponding controller.
And, dispensing unit 306 also is used to send configuration information to described transmitting element 301, and by described transmitting element 301 described configuration information is sent to the PON service terminal, as ONU, thereby make ONU can carry out the configuration of user side up-downgoing wavelength according to the configuration information that receives.
Embodiment four,
The embodiment of the invention also provides a kind of boxcar, also can be called a kind of optical communication apparatus, and as shown in Figure 4, this boxcar comprises: the second wavelength division multiplexing unit 401 and acquiring unit 402.
Wherein, the second wavelength division multiplexing unit 401, be used to receive one road light signal of optical splitter output, professional downlink optical signal of PON in this road light signal and the professional downlink optical signal of non-PON are separated, and the professional downlink optical signal of the PON after will separating sends to the PON terminal, and the professional downlink optical signal of non-PON is separately sent to acquiring unit 402.
Acquiring unit 402 is used for according to configuration information, and the professional downlink optical signal of non-PON after described separating obtains the discernible light signal of corresponding non-PON service terminal, and the described light signal that obtains is sent to described non-PON service terminal.
In specific embodiment, the second wavelength division multiplexing unit 401 and acquiring unit 402 in this boxcar can be integrated in an equipment (being described boxcar) by corresponding be interpreted as second wavelength division multiplexer and the deriving means that provide among the embodiment two.
Further, this acquiring unit 402 specifically can comprise: adjustable receiving element 402a and electrooptic switching element 402b.
Adjustable receiving element 402a, be used for according to described configuration information, select the light signal of a kind of wavelength corresponding the downlink optical signal of the non-PON business after separately, and the light signal of selecting is converted to the signal of telecommunication and sends to electrooptic switching element 402b with described information.
Need to prove that the information that sets in advance among the adjustable receiving element 402a can specifically be to be provided by the PON terminal of correspondence (as contiguous ONU).Wherein, ONU can be controlled by OLT by the PON agreement, that is, what OLT can be indirect is provided with adjustable receiving element 402a.Should be appreciated that can also have other method to being provided with of adjustable receiving element 402a, should not be construed the restriction to the embodiment of the invention herein.
Wherein, electrooptic switching element 402b is that wavelength is 850nm usually with the electrical signal conversion that receives, 1310nm, perhaps 1550nm any light signal wherein.
When the wave-length coverage that can receive when described non-PON service terminal is very big, but this acquiring unit 402 is specifically as follows regulated filtering unit.But described regulated filtering unit can be selected the light signal with corresponding downstream wavelength according to described configuration information from the professional downlink optical signal of a plurality of non-PON, allow it by arriving other service terminal.
Which specifically selects in addition, can dispose in real time, also other equipment disposition can be arranged by contiguous ONU, but also can be pre-configured and be kept at described regulated filtering unit.
Further, this boxcar can also comprise: the 3rd photoelectricity optical conversion element 403, be used to receive the uplink optical signal that non-PON service terminal sends, and this uplink optical signal is converted to the signal of telecommunication, be light signal with this electrical signal conversion again with specific wavelength.The 3rd photoelectricity photoconverter that the 3rd photoelectricity optical conversion element 403 can be understood as the foregoing description two to be provided also is integrated in this boxcar.
The second wavelength division multiplexing unit 401 also is used to receive the professional uplink optical signal of non-PON that described the 3rd photoelectricity optical conversion element 403 sends, and the professional uplink optical signal of the PON that receives the transmission of PON terminal, the uplink optical signal that receives is carried out the wavelength division multiplexing operation, and the light signal after the wavelength division multiplexing operation is sent to described optical splitter.
Wherein, above-mentioned certain wavelengths can be configured the 3rd photoelectricity optical conversion element 403 in this boxcar by the ONU of correspondence and obtain, need to prove that the configuration to boxcar among the ONU is the configuration of carrying out according to the configuration information that the OLT that ONU receives sends.Certainly the wavelength that is provided with also can be to be obtained by other method, should not be construed the restriction to the embodiment of the invention herein.
Preferably, this boxcar also can comprise: dispensing unit 404, be used for the configuration information that the ONU other PON terminals such as (or) ONT according to correspondence sends, and dispose described acquiring unit 402, thereby obtain configuration information; Configuration information according to ONU other PON terminals such as (or) ONT sends disposes the 3rd photoelectricity optical conversion element 403, thereby obtains to be provided with wavelength.
Wherein, dispensing unit 404 specifically can be to be realized by the PON terminal, and for example: can be the function that is realized this dispensing unit by ONU, this ONU can only be used for realizing the function of dispensing unit 404, and needn't carry out with OLT between regular traffic communicate by letter; Perhaps the ONU by normal PON communication service between execution and the OLT realizes.
Embodiment five,
The embodiment of the invention provides a kind of transmission method.As shown in Figure 5, this method comprises:
Step S1: non-PON business bureau side controller sends the downlink optical signal corresponding with non-PON business to the first photoelectricity photoconverter;
Wherein, controller can be one or more than one, and it specifically can be radio equipment controller (REC, Radio Equipment Controller), also can be miscellaneous equipment, should not be construed the restriction to inventive embodiments herein.Embodiment can think that each controller is used for a kind of non-PON business for a better understanding of the present invention.The wavelength of the downlink optical signal that these controllers send can be identical, also can be different.
Step S2: the wavelength of wavelength Conversion for being provided with of the professional downlink optical signal of the non-PON that the first photoelectricity photoconverter will receive, the professional downlink optical signal of non-PON that will carry out after the wavelength Conversion sends to first wavelength division multiplexer;
Wherein, the wavelength of above-mentioned setting can be according to the designer requirement of this optical communication system to be provided with.
Wavelength after the downlink optical signal conversion that each controller sends is different, also can be understood as the wavelength of the corresponding setting of each controller, and the wavelength of each setting is different.And the wavelength after the conversion can not be identical with the operation wavelength (wherein, the operation wavelength of PON comprises: uplink optical signal wavelength and downlink optical signal wavelength) of PON.M professional downlink optical signal of non-PON and the professional downlink optical signal of PON are transmitted in ODN simultaneously, thereby reduce the possibility that occurs the wavelength conflict between the miscellaneous service signal.
Step S3: optical line terminal sends the professional downlink optical signal of PON to first wavelength division multiplexer;
Optical line terminal sends to the wavelength of the professional downlink optical signal of PON of first wavelength division multiplexer, the wavelength that sends to the professional downlink optical signal of non-PON of first wavelength division multiplexer with the first photoelectricity photoconverter is different, in specific embodiment, the wavelength that optical line terminal sends to the PON business personnel downlink optical signal of first wavelength division multiplexer specifically can be 1490nm.
Step S4: first wavelength division multiplexer receives the professional downlink optical signal of non-PON after the described conversion, and receive the professional downlink optical signal of described PON, the downstream signal of the various wavelength that receive is carried out the wavelength division multiplexing operation, and the downlink optical signal after the wavelength division multiplexing operation is exported to optical splitter;
Step S5: optical splitter receives the downlink optical signal after the wavelength division multiplexing operation that first wavelength division multiplexer sends, and the light signal after the wavelength division multiplexing operation is carried out light-splitting processing to generate more than one road light signal and output;
Step S6: second wavelength division multiplexer receives one road light signal of optical splitter output, professional downlink optical signal of PON in this road light signal and the professional downlink optical signal of non-PON are separated, the downlink optical signal of the PON business after separating is sent to the PON terminal, the professional downlink optical signal of non-PON is separately sent to deriving means;
Such as, if the wavelength of the downlink optical signal that OLT sends is 1490nm, the signal that in second wavelength division multiplexer 206 with wavelength is 1490nm extracts from the light signal that it receives, and itself and non-PON business are separated, and is that the light signal of 1490nm sends to the PON terminal with described wavelength.Therewith, the PON terminal just can receive the PON business datum that OLT issues.
Step S7: deriving means is according to configuration information, and the professional downlink optical signal of non-PON after separately obtains the discernible light signal of non-PON service terminal of its correspondence, and the light signal that obtains is sent to this service terminal of correspondence.
Particularly, the concrete operations in the described deriving means can comprise:
At first, adjustable receiver is selected the light signal of a kind of wavelength corresponding with described information according to described configuration information the professional downlink optical signal of the non-PON after separately, and the light signal of selecting is converted to the signal of telecommunication and sends to electrical to optical converter;
Then, electrical to optical converter is the discernible light signal of its corresponding service terminal with the electrical signal conversion that receives, and the discernible light signal of this service terminal after the conversion is sent to described service terminal.
Deriving means also can utilize tunable filter (TF, Tunable Filter), from the professional downstream wavelength of a plurality of non-PON, select and the corresponding wavelength of described configuration information, and allow light signal pass through, thereby it is outputed to described non-PON service terminal with described wavelength.
Wherein, which wavelength TF specifically selects, and can be disposed in real time by contiguous ONU, also can pass through other equipment disposition, also can be pre-configured and be kept among the TF.
Present embodiment is the different light signal of wavelength with the downlink optical signal wavelength Conversion that each non-PON business bureau side controller sends, therefore the transmission wavelength of each controller 201 uses can be identical, promptly do not need the wavelength that controller uses is limited, can reduce the complexity of networking thus.On the other hand, by described deriving means, can make when user side is separated wavelength division multiplexing to downlink optical signal, only the professional downlink optical signal of non-PON need be separated getting final product with the professional downlink optical signal of PON, thereby reduced requirement, be convenient to maintenance equipment to the user side wavelength division multiplexer.
Above-mentioned explanation has realized the purpose that controller is given corresponding non-PON service terminal with business data transmission, in addition, and in specific embodiment,
After step S7, this method can also comprise:
Step S8: the 3rd photoelectricity photoconverter receives the uplink optical signal that non-PON service terminal sends, and this uplink optical signal is converted to the signal of telecommunication, is the light signal with specific wavelength (wavelength promptly is set) with this electrical signal conversion again;
Wherein, the wavelength of the light signal that described non-PON service terminal sends generally is 850nm, 1310nm, perhaps 1550nm.If the quantity of described non-PON business is n, the up wavelength of then described m non-PON service terminal can be an identical wavelength, also can be different several wavelength.
Step S9: second wavelength division multiplexer receives the professional uplink optical signal of non-PON that the 3rd photoelectricity photoconverter sends, and the professional uplink optical signal of the PON that receives the transmission of PON terminal, its uplink optical signal that receives is carried out the wavelength division multiplexing operation, and the light signal after the wavelength division multiplexing operation is sent to described optical splitter;
Step S10: optical splitter receives one or the light signal that sends more than one second wavelength division multiplexer, sends to first wavelength division multiplexer after all uplink optical signals are converged;
Step S11: first wavelength division multiplexer receives the light signal after the converging of optical splitter transmission, light signal after converging is carried out the wavelength-division de-multiplex operation, and according to wavelength information, the professional uplink optical signal of PON after the wavelength-division de-multiplex operation is sent to optical line terminal, and the professional uplink optical signal of non-PON is sent to corresponding non-PON business bureau side controller;
Step S12:OLT receives the professional uplink optical signal of PON that first wavelength division multiplexer sends, and carries out the PON business;
Step S13: controller receives the professional uplink optical signal of non-PON that first wavelength division multiplexer sends, and carries out non-PON business.
In the present embodiment, conversion process by the 3rd photoelectricity photoconverter, the upstream signal wavelengths that the professional corresponding service terminal of various non-PON can be sent is converted to the different uplink optical signal of wavelength, therefore, therefore, adopt the embodiment of the invention realizing that multi-service can reduce the transformation to the corresponding terminal of existing every kind of business when sharing ODN.
In addition, when the wavelength of optical signal that sends when the wave-length coverage and first wavelength division multiplexer of the receiving optical signals of controller did not match, after step S11, before the step S13, described method also comprised:
Step S14: the 4th photoelectricity photoconverter receives the light signal that first wavelength division multiplexer sends, this light signal is converted to the signal of telecommunication, with electrical signal conversion is the light signal that controller can be discerned wavelength, (concrete as: 850nm, 1310nm, perhaps 1550nm), and the described uplink optical signal of discerning wavelength that has that will carry out obtaining after the wavelength Conversion send to corresponding controller;
Described the 4th photoelectricity photoconverter can be so that the wavelength of optical signal that sends when the wave-length coverage and first wavelength division multiplexer of the receiving optical signals of controller be when matching, also can obtain the uplink optical signal that non-PON service terminal sends, therefore, compared with prior art, present embodiment can reduce the transformation to controller, is convenient to the maintenance to equipment.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of the foregoing description is to instruct relevant hardware to finish by program, this program can be stored in the computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.
More than the business transmitting method of Optical Distribution Network is shared in a kind of multi-service that the embodiment of the invention provided, optical communication apparatus, and optical communication system is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (15)
1. the business transmitting method of the shared Optical Distribution Network of multi-service is characterized in that, comprising:
Reception is by one road downlink optical signal of branch optical fiber transmission, this road downlink optical signal comprises by the professional downlink optical signal of PON of wavelength division multiplexing and the professional downlink optical signal of non-PON, the professional downlink optical signal of wherein said non-PON is different with the wavelength of the professional downlink optical signal of PON, and the professional downlink optical signal of described non-PON is with different by the professional downlink optical signal signal wavelength of the non-PON of other branch optical fiber transmission;
The professional downlink optical signal of PON in this road downlink optical signal is separated with non-PON service signal downlink optical signal, and the professional downlink optical signal of the PON after will separating offers the PON service terminal;
According to the wavelength information of described PON service terminal configuration, the non-PON service signal after described separating obtains the corresponding discernible light signal of non-PON service terminal, and the light signal that is obtained is sent to described non-PON service terminal.
2. business transmitting method according to claim 1 is characterized in that, described wavelength information is to be obtained and dispose from the PON protocol message of optical line terminal by described Optical Distribution Network transmission by described PON service terminal.
3. business transmitting method according to claim 1 is characterized in that, the professional downlink optical signals of described a plurality of non-PON are in that to carry out the wavelength of wavelength Conversion before handling be identical or part is identical.
4. according to each described business transmitting method in the claim 1 to 3, it is characterized in that, also comprise:
Receive the professional uplink optical signal of non-PON that described non-PON service terminal provides, and it is carried out wavelength Conversion handle, so that the wavelength of the professional uplink optical signal of described non-PON is different with the professional uplink optical signals of other non-PON, and the PON business uplink optical signal that provides with described PON service terminal is different;
Handle with the professional uplink optical signal of described PON and through the professional uplink optical signal wavelength division multiplexing of the non-PON after the wavelength Conversion processing.
5. business transmitting method according to claim 4 is characterized in that, also comprises:
The uplink optical signal that multichannel is operated through wavelength division multiplexing pools traveling optical signal and transmission on the way;
Light signal after described the converging is carried out the wavelength-division de-multiplex operation with from wherein isolating the professional uplink optical signal of professional uplink optical signal of PON and non-PON, and it is sent to PON business receive unit and corresponding non-PON business bureau side controller respectively.
6. business transmitting method according to claim 5 is characterized in that, the described step that the professional uplink optical signal of non-PON is sent to corresponding non-PON business bureau side controller comprises:
The professional uplink optical signal of non-PON after the described wavelength-division de-multiplex operation is converted to the signal of telecommunication;
According to preset wavelength information, be to have the uplink optical signal that corresponding controller can be discerned wavelength with described conversion of signals;
Uplink optical signal after the conversion is sent to corresponding controller respectively.
7. the optical communication apparatus of the shared Optical Distribution Network of multi-service is characterized in that, comprises second wavelength division multiplexer and deriving means;
Described second wavelength division multiplexer, be used to receive road downlink optical signal by the branch optical fiber transmission, this road downlink optical signal comprises by the professional downlink optical signal of PON of wavelength division multiplexing and the professional downlink optical signal of non-PON, the professional downlink optical signal of PON in this road downlink optical signal is separated with non-PON service signal downlink optical signal, and the professional downlink optical signal of the PON after will separating offers the PON service terminal, the professional downlink optical signal of wherein said non-PON is different with the wavelength of the professional downlink optical signal of PON, and the professional downlink optical signal of described non-PON is with different by the professional downlink optical signal signal wavelength of the non-PON of other branch optical fiber transmission;
Described deriving means is used for the wavelength information according to described PON service terminal configuration, and the non-PON service signal after described separating obtains the corresponding discernible light signal of non-PON service terminal, and the light signal that is obtained is sent to described non-PON service terminal.
8. optical communication apparatus according to claim 7 is characterized in that, described wavelength information is to obtain and be configured to described deriving means by described PON service terminal from the PON protocol message of optical line terminal by described Optical Distribution Network transmission.
9. optical communication apparatus according to claim 7 is characterized in that, the professional downlink optical signals of described a plurality of non-PON are in that to carry out the wavelength of wavelength Conversion before handling be identical or part is identical.
10. according to each described optical communication apparatus in the claim 7 to 9, it is characterized in that, also comprise:
Wavelength shifter, be used to receive the professional uplink optical signal of non-PON that described non-PON service terminal provides, and it is carried out wavelength Conversion handle, so that the wavelength of the professional uplink optical signal of described non-PON is different with the professional uplink optical signals of other non-PON, and the PON business uplink optical signal that provides with described PON service terminal is different;
Described wavelength multiplexer also is used for the professional uplink optical signal wavelength division multiplexing of non-PON after professional uplink optical signal of described PON and the processing of process wavelength Conversion is handled, and the uplink optical signal after the processing of transmission wavelength division multiplexing.
11. the optical communication system of Optical Distribution Network is shared in a multi-service, it is characterized in that, comprising: wavelength shifter, first wavelength division multiplexer, optical splitter, second wavelength division multiplexer and deriving means;
Described wavelength shifter, be used to receive the professional downlink optical signal of a plurality of non-PON, and the professional downlink optical signal of described a plurality of non-PON is carried out wavelength Conversion handle, so that the wavelength difference between the professional downlink optical signal of described a plurality of non-PON, and the professional downlink optical signal of described non-PON is different with the wavelength of the professional downlink optical signal of PON;
Described first wavelength division multiplexer, the professional downlink optical signal of non-PON after being used for the professional downlink optical signal of described PON and wavelength Conversion handled carries out the wavelength division multiplexing operation, and exports to described optical splitter by the downstream signal of trunk optical fiber after with the wavelength division multiplexing operation;
Described optical splitter, it is connected to described first wavelength division multiplexer by described trunk optical fiber, and is connected to described second wavelength division multiplexer by branch optical fiber, is used for the light signal after the described wavelength division multiplexing operation is carried out light-splitting processing to generate the light signal of multichannel;
Described second wavelength division multiplexer, be used to receive one road light signal of described optical splitter output, professional downlink optical signal of PON in this road light signal and the professional downlink optical signal of non-PON are separated, and the professional downlink optical signal of the PON after will separating offers the PON service terminal;
Described deriving means, be used for wavelength information according to described PON service terminal configuration, obtain the discernible downlink optical signal of non-PON service terminal of its correspondence from the described professional downlink optical signal of non-PON after separately, and the downlink optical signal that is obtained is sent to described non-PON service terminal.
12. optical communication system according to claim 11, it is characterized in that, also comprise another wavelength shifter, it is used to receive the professional uplink optical signal of non-PON that described non-PON service terminal provides, and it is carried out wavelength Conversion handle, so that the wavelength of the professional uplink optical signal of described non-PON is different with the professional uplink optical signal of other non-PON;
Described second wavelength division multiplexer, the professional uplink optical signal wavelength division multiplexing operation of non-PON after also being used for the professional uplink optical signal of PON that described PON service terminal is provided and handling through wavelength Conversion, and the uplink optical signal of the branch optical fiber by correspondence after with described wavelength division multiplexing operation sends to described optical splitter.
13. optical communication system according to claim 12 is characterized in that,
Described optical splitter also is used for its multichannel that receives is pooled traveling optical signal on the way through the uplink optical signal of wavelength division multiplexing operation, and the uplink optical signal after will converging by described trunk optical fiber sends to described first wavelength division multiplexer;
Described first wavelength division multiplexer, also be used for the uplink optical signal after described the converging is carried out the wavelength-division de-multiplex operation to isolate the professional uplink optical signal of professional uplink optical signal of described PON and non-PON, and, the uplink optical signal after the wavelength-division de-multiplex operation is sent to optical line terminal and corresponding non-PON service controller respectively according to default wavelength information.
14. optical communication system according to claim 11 is characterized in that, described wavelength information is to obtain and be configured to described deriving means by described PON service terminal from the PON protocol message that optical line terminal sends.
15. optical communication system according to claim 11 is characterized in that, the professional downlink optical signal of the non-PON that described wavelength shifter receives is a white light signal, and described white light signal is handled the glory signal that is converted into correspondence afterwards through wavelength Conversion; And described glory signal is converted into white light signal and exports to corresponding non-PON service terminal after being obtained by described deriving means.
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| CN104734780B (en) * | 2014-12-29 | 2017-07-21 | 东莞市启鼎光电科技有限公司 | A kind of fiber buss CMTSs of passive light splitting RS 485 |
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| CN104753596B (en) * | 2014-12-29 | 2017-09-01 | 东莞市启鼎光电科技有限公司 | A kind of passive many mouthfuls of terminals of the fiber buss of light splitting RS 485 |
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| CN102064904B (en) | 2013-09-11 |
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