CN103595496A - System and method for achieving online upgrading of single-star multi-ring wavelength division multiplexing passive optical network and achieving protection function - Google Patents
System and method for achieving online upgrading of single-star multi-ring wavelength division multiplexing passive optical network and achieving protection function Download PDFInfo
- Publication number
- CN103595496A CN103595496A CN201310549154.1A CN201310549154A CN103595496A CN 103595496 A CN103595496 A CN 103595496A CN 201310549154 A CN201310549154 A CN 201310549154A CN 103595496 A CN103595496 A CN 103595496A
- Authority
- CN
- China
- Prior art keywords
- optical
- switch
- enter
- waveguide grating
- splitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The invention relates to a system and method for achieving online upgrading of a single-star multi-ring wavelength division multiplexing passive optical network and achieving a protection function. In the system, an OLT is connected with an RN through a feedback optical fiber, multiple ONUs are connected in series through distribution optical fibers in the RN to form ONU rings, and the RN is connected with the multiple ONU rings to form a single-star multi-ring network. Due to the design of the OLT and the RN, an existing star network is upgraded. Due to the structure design of an RN optical switch and an ONU optical switch, the distributed optical fibers are protected. By conducting modulation and remodulation on the amplitude and phase position of the same optical wave, multiple times of application of the same wave length is achieved, and cost and performance are balanced in the system.
Description
Technical field
The present invention relates to optical communication field, specifically relate to the system and method that a kind of Wave division multiplexing passive optical network (WDM-PON) is realized online Shengji energy and defencive function.
Background technology
The Wave division multiplexing passive optical network WDM-PON technology bandwidth of can upgrading in the situation that not changing physical basis equipment, significantly promote the transmission capacity of network, realize virtual point-to-point transmission, between each user, can not share information, there is natural fail safe, in optical access network, gather around and have broad application prospects, be considered to the final selection of the following evolution of FTTx.The current research for WDM-PON is mainly based on static Wavelength Assignment, and wavelength is fixed on RNZhong Xia road, and ONU is more.How under existing network, further increase ONU quantity, and keep the stability optical-fiber network of network to need a problem of solution badly.Colorless ONU becomes the common recognition of current WDM-PON correlative study substantially, and the technical scheme based on colorless ONU is the main flow of WDM-PON system.Moreover optical-fiber network has high transmission rate, within the short as far as possible time, be therefore that interrupted business is found new transmission route and self-healing scheme is also very important.The present invention has carried out rational layout to the architectural framework of system, and system not only realizes wavelength simultaneously increases ONU quantity and the protection to profile fiber on a large scale, and can utilize current network, makes system also can reach perfect condition between cost and performance.
Summary of the invention
The object of the invention is to for existing Star Network; provide a kind of Wavelength division multiplexing-passive light net (WDM-PON) to realize the system and method for online upgrading and defencive function; can effectively in WDM-PON, realize extensive increase ONU quantity and the protection to profile fiber, native system is also supported from existing star network upgrading simultaneously.
For achieving the above object, core concept of the present invention is: in optical line terminal OLT, each wavelength is all carried out to amplitude modulation(PAM) and phase-modulation.At RN place, adopt a kind of new structure configuration mode, by the frame mode of this new distant-end node RN, realize a RN and connect a plurality of ONU rings.When modulated signals transfers to RN, under array waveguide grating route, Different lightwave progress enters different ONU ring, in optical network unit ONU, by Coarse Wave Division Multiplexer, carries out wavelength selection, after by receiver, received.Receiver, according to different each wavelength of demodulation mode demodulation, obtains different downlink informations and broadcast message, and each wavelength is carried out respectively to up modulation.
According to foregoing invention design, the present invention adopts following technical proposal:
A kind of single star encircles the system that Wave division multiplexing passive optical network is realized online upgrading and defencive function more, by optical line terminal OLT, by 1 monomode fiber, connect 1 far-end node RN, far-end node RN connects a plurality of optical network unit rings by profile fiber, and each optical network unit ring comprises M optical network unit ONU; It is characterized in that:
1) described optical line terminal OLT is to be connected to an array waveguide grating by M*N optical sender, this first array waveguide grating is connected to an amplitude modulator simultaneously, the output of amplitude modulator is connected to the first port of an optical circulator through an erbium-doped fiber amplifier, the second port of optical circulator connects feedback optical fiber, the 3rd port of optical circulator is connected to second array waveguide grating, and each output port of the second array waveguide grating respectively connects respectively an amplitude receiver;
2) described feedback optical fiber is connected with the 3rd array waveguide grating in described distant-end node RN, described distant-end node RN is described the 3rd array waveguide grating output and be connected with first optical switch respectively, the first port of this first optical switch is connected to first optical splitter, the first port of this first optical splitter then connects profile fiber, the second port of the first optical splitter is connected to the first port of the second optical switch, the second port of the first optical switch is connected to the second port of the second optical switch, the second optical switch is then connected to the first port of first optical splitter, the second port of the first optical splitter is connected to first photodiode, this first photodiode is again respectively with first, the second optical switch is connected, the first optical splitter is connected with described profile fiber,
3) described profile fiber is connected optical network unit ONU, and each optical network unit ONU comprises 1 the second optical splitter, 1 the 3rd optical splitter, 1 the second photodiode, 1 the 3rd optical switch, 1 Coarse Wave Division Multiplexer C/W, 1 adjustable optical attenuator, 1 reflective semiconductor optical amplifier RSOA, 1 light phase receiver, 1 light amplitude receiver.Under normal circumstances, described profile fiber is connected with the second optical splitter first, the second second mouthful of optical splitter is connected to the second photodiode, and photodiode is connected with adjustable optical attenuator with the 3rd optical switch respectively, second mouthful of the 3rd optical switch is connected with Coarse Wave Division Multiplexer, Coarse Wave Division Multiplexer is then connected with adjustable optical attenuator, adjustable optical attenuator is connected with the 3rd optical splitter, the first of the 3rd optical splitter is connected with reflective semiconductor optical amplifier RSOA, second mouthful of the 3rd optical splitter is connected with light amplitude receiver, the 3rd mouthful of the 3rd optical splitter is connected with light phase receiver, second mouthful of Coarse Wave Division Multiplexer is connected with the 3rd mouthful of the 3rd optical switch, the 3rd optical switch four-hole then connects profile fiber.
A kind of single star encircles the method that Wave division multiplexing passive optical network is realized online upgrading and defencive function more, above-mentioned single star encircles ripple Wave division multiplexing passive optical network more and realizes the system of online upgrading and defencive function and operate, it is characterized in that: under normal mode, during downlink transfer, optical sender is launched the optical wavelength that N*M amplitude be loaded with downlink information simultaneously and is injected in 1x (N*M) the first array waveguide grating, 1x (N*M) the first array waveguide grating is multiplexing to be modulated by phase-modulator PM, the broadcast singal of light modulated network element, modulation finishes to amplify by er-doped image intensifer, be injected into light circulator, after this optical circulator route, import described feedback optical fiber into.Light signal enters far-end node RN through 1*N the second array waveguide grating demultiplexing, each delivery outlet output M root light wave of 1*N the second array waveguide grating.This M root light wave, after first, second optical switch route, enters optical network unit ring.Optical wavelength enters optical network unit ONU through profile fiber
jafter, under the 3rd optical switch route, enter Coarse Wave Division Multiplexer, the light wave of this optical network unit of light wave will be exported from Coarse Wave Division Multiplexer first, enter the 3rd optical splitter, all the other light waves are from second mouthful of output of Coarse Wave Division Multiplexer, after the 3rd optical switch route, enter profile fiber, then enter next optical network unit.The optical wavelength of this network element, from the output of Coarse Wave Division Multiplexer first, through adjustable optical attenuator decay, is then equally divided into three parts by the 3rd optical splitter, and first is reflected formula semiconductor optical amplifier and modulates, for transmitting uplink information; Second portion is received and obtains downlink information by amplitude receiver; Third part is received and obtains broadcast message by phase receivers.Upward signal reflects through the 3rd optical splitter, optical attenuator, Coarse Wave Division Multiplexer, the 3rd optical switch, the second optical splitter, profile fiber, ONU
j-1oNU
1enter RN, then through the first optical splitter, first, second optical switch enters the second array waveguide grating, after multiplexing by the second array waveguide grating, enter feedback light fibre, under the route of optical circulator, enter er-doped image intensifer and amplify, then by the second array waveguide grating) demultiplexing, finally by amplitude receiver, received.
Above-mentioned single star encircles the method that Wave division multiplexing passive optical network is realized online upgrading and defencive function more, it is characterized in that: when being positioned at optical network unit ONU
jwith optical network unit ONU
j+1profile fiber break down, the first photodiode in distant-end node RN detects upward signal energy and dies down, control first, second optical switch and switch, in this simultaneously, optical network unit ONU
j+1oNU
min the second photodiode downstream signal cannot be detected, control the 3rd optical switch and switch.First, second, third optical switch enters after new state, in distant-end node RN, broadcast from the second array waveguide grating delivery outlet output, under the first optical switch route, by the first optical splitter, be evenly divided into 2 parts, first part of signal enters profile fiber through the second optical switch, and first part of light signal operating path is as above-mentioned in weighed.Second part of light signal directly enters profile fiber.Laggardly enter optical network unit, under the 3rd optical switch route, enter Coarse Wave Division Multiplexer, the light wave of this optical network unit of light wave will be exported from Coarse Wave Division Multiplexer first, enter the 3rd optical splitter, all the other light waves are from second mouthful of output of Coarse Wave Division Multiplexer, after the 3rd optical switch route, enter profile fiber, then enter next optical network unit.The optical wavelength of this network element, from the output of Coarse Wave Division Multiplexer first, through adjustable optical attenuator decay, is then equally divided into three parts by the 3rd optical splitter, and first is reflected formula semiconductor optical amplifier and modulates, for transmitting uplink information; Second portion is received and obtains downlink information by amplitude receiver; Third part is received and obtains broadcast message by phase receivers.Upward signal reflects through the 3rd optical splitter, optical attenuator, Coarse Wave Division Multiplexer, the 3rd optical switch, the second optical splitter, profile fiber, ONU
j-1oNU
1enter RN, then through the first optical splitter, first, second optical switch enters the 3rd array waveguide grating, after multiplexing by the 3rd array waveguide grating, enter feedback light fibre, under the route of optical circulator, enter er-doped image intensifer and amplify, then by the second array waveguide grating demultiplexing, finally by amplitude receiver, received
Compared with prior art, unique advantage of the present invention and conspicuousness characteristic are: (1) has improved ONU quantity by the combination of hub-and-spoke configuration and loop configuration, has expanded network size; (2) utilize the self-healing feature of loop network, provide protection (3) to profile fiber by utilizing Star Network, the coverage that profile fiber damages is reduced, and this network can be upgraded by existing Star Network.
Accompanying drawing explanation
Fig. 1 is that one embodiment of the invention is demonstrate,proved single star and encircled the system schematic that Wave division multiplexing passive optical network is realized online upgrading and defencive function more.
Fig. 2 is the schematic diagram of optical network unit ONU internal structure in Wave division multiplexing passive optical network.
Fig. 3 is that the protected mode star that places an order encircles the system schematic that Wave division multiplexing passive optical network is realized online upgrading and defencive function more.
Fig. 4 is the schematic diagram of optical network unit ONU internal structure in Wave division multiplexing passive optical network under protected mode.
Embodiment
Details are as follows by reference to the accompanying drawings for the preferred embodiments of the present invention:
Embodiment mono-:
Referring to Fig. 1 and Fig. 2; this single star encircles the system that Wave division multiplexing passive optical network is realized online upgrading and defencive function more; by optical line terminal OLT (1), by 1 monomode fiber (2), connect 1 far-end node RN(3); far-end node RN(3) by profile fiber (23), connect a plurality of optical network unit rings (4); each optical network unit ring comprises M optical network unit ONU (17; 18,19 ... 20,21 ... 22).
Described optical line terminal OLT (1) is by M*N optical sender (5, 6) be connected to first array waveguide grating (7), this first array waveguide grating (7) is connected to an amplitude modulator (8) simultaneously, the output of amplitude modulator (8) is connected to the first of optical circulator (10) through an erbium-doped fiber amplifier (9), second mouthful of this optical circulator (10) connects described feedback optical fiber (2), the 3rd mouthful of optical circulator (10) is connected to second array waveguide grating (25), each delivery outlet of this second array waveguide grating (25) respectively connects respectively an amplitude receiver (26, 27).
Described feedback optical fiber (2) and described distant-end node RN(3) in the 3rd array waveguide grating (11) be connected, described distant-end node RN(3) be that described the 3rd array waveguide grating (11) output is connected with first optical switch (12) respectively, the first port of this first optical switch (12) is connected to first optical splitter (16), first port of this optical splitter (16) then connects described profile fiber (23), the second port of this first optical splitter (16) is connected to the first port of second optical switch (13), the second port of the first optical switch (12) is connected to the second port of the second optical switch (13), the second optical switch (13) is then connected to the first port of first optical splitter (14), the second port of the first optical splitter (14) is connected to first photodiode (15), this first photodiode (15) is connected with the second optical switch (13) with the first optical switch (12) respectively again, the 3rd port of the first optical splitter (14) is connected with described profile fiber (23).
Described profile fiber (23) is by optical network unit ONU (17,18,19,20,21,22) series connection, each optical network unit ONU comprises 1 the second optical splitter (29), 1 the 3rd optical splitter (34), 1 the second photodiode (31), 1 the 3rd optical switch (30), 1 Coarse Wave Division Multiplexer C/W(32), an adjustable optical attenuator (33), 1 reflective semiconductor optical amplifier RSOA(35), 1 light phase receiver RX
2(37), 1 light amplitude receiver RX
1(36).Under normal circumstances, described profile fiber (23) is connected with the second optical splitter (29) first ports, the second optical splitter (29) second ports are connected to the second photodiode (31), the second photodiode (31) respectively with the 3rd optical switch (30) and wavelength division multiplexer C/W(32) be connected, the second port of the 3rd optical switch (30) and Coarse Wave Division Multiplexer C/W(32) be connected, Coarse Wave Division Multiplexer C/W(32) be then connected with adjustable optical attenuator (33), adjustable optical attenuator (33) is connected with the 3rd optical splitter (34), the first port of the 3rd optical splitter (34) and reflective semiconductor optical amplifier RSOA(35) be connected, the second port of the 3rd optical splitter (34) and light amplitude receiver RX
1(36) be connected, the 3rd mouthful and light phase receiver RX of the 3rd optical splitter (34)
2(37) be connected, Coarse Wave Division Multiplexer C/W(32) second mouthful is connected with the 3rd optical switch (30) the 3rd port, and the 3rd optical switch the 4th port then connects described profile fiber (23).
Embodiment bis-:
Referring to Fig. 1, system shown in Figure 2, realizing single star encircles Wave division multiplexing passive optical network more and realizes the concrete grammar of online upgrading and defencive function and be: under normal mode, during downlink transfer, optical sender (5, 6) launch the optical wavelength that N*M amplitude be loaded with downlink information is injected in 1x (N*M) the first array waveguide grating (7) simultaneously, 1x (N*M) the first array waveguide grating (7) is multiplexing to be modulated by phase-modulator PM (8), the broadcast singal of light modulated network element, modulation finishes to amplify by er-doped image intensifer (9), be injected into light circulator (10), after this optical circulator (10) route, import feedback optical fiber (2) into.Light signal enters far-end node RN(3) through 1*N the 3rd array waveguide grating (11) demultiplexing, each delivery outlet output M root light wave of 1*N the 3rd array waveguide grating (11).This M root light wave, after first, second optical switch (12,13) route, enters optical network unit ring (4).Optical wavelength enters optical network unit ONU through profile fiber (23)
jafter, under optical switch (30) route, enter Coarse Wave Division Multiplexer (32), the light wave of this optical network unit of light wave will be exported from Coarse Wave Division Multiplexer (32) first, enter the second optical splitter (34), all the other light waves are from (32) second mouthfuls of outputs of Coarse Wave Division Multiplexer, after the 3rd optical switch (30) route, enter profile fiber (23), then enter next optical network unit.The optical wavelength of this network element is from the output of Coarse Wave Division Multiplexer first, through adjustable optical attenuator, decay, then by the 3rd optical splitter (34), be equally divided into three parts, first is reflected formula semiconductor optical amplifier (35) and modulates, for transmitting uplink information; Second portion is received and obtains downlink information by amplitude receiver (36); Third part is received and obtains broadcast message by phase receivers (37).Upward signal reflects through the 3rd optical splitter (34), optical attenuator (33), Coarse Wave Division Multiplexer (32), the 3rd optical switch (30), the second optical splitter (29), profile fiber (23), ONU
j-1oNU
1enter RN, then through the first optical splitter (14), first, second optical switch (13,12) enter the 3rd array waveguide grating (11), enter feedback light fibre (2) after multiplexing by array waveguide grating (11), under the route of optical circulator (10), entering er-doped image intensifer (21) amplifies, then by the second array waveguide grating (25) demultiplexing, finally by amplitude receiver (26,27), received.
Embodiment tri-:
Referring to Fig. 3,4, when being positioned at optical network unit ONU
jand optical network unit ONU (20)
j+1(21) profile fiber (23) breaks down, at distant-end node RN(3) in the first photodiode (15) upward signal energy detected and die down, control first, second optical switch (12,13) and switch, in this simultaneously, optical network unit ONU
j+1oNU
min the second photodiode (31) downstream signal cannot be detected, control the 3rd optical switch (30) and switch.First, second, third optical switch (12,13,30) enter after new state, at distant-end node RN(3) in, broadcast from the 3rd array waveguide grating (11) delivery outlet output, under the first optical switch (12) route, is evenly divided into 2 parts by the first optical splitter (16), first part of signal enters profile fiber through the second optical switch (13), and first part of light signal operating path as claimed in claim 2.Second part of light signal directly enters profile fiber.Laggardly enter optical network unit (22,28,21), under the 3rd optical switch (30) route, enter Coarse Wave Division Multiplexer (32), the light wave of this optical network unit of light wave will enter the 3rd optical splitter (34) from the output of Coarse Wave Division Multiplexer (32) first, and all the other light waves are from (32) second mouthfuls of outputs of Coarse Wave Division Multiplexer, after the 3rd optical switch (30) route, enter profile fiber (23), then enter next optical network unit.The optical wavelength of this network element is from the output of Coarse Wave Division Multiplexer first, through adjustable optical attenuator, decay, then by the 3rd optical splitter (34), be equally divided into three parts, first is reflected formula semiconductor optical amplifier (35) and modulates, for transmitting uplink information; Second portion is received and obtains downlink information by amplitude receiver (36); Third part is received and obtains broadcast message by phase receivers (37).Upward signal reflects through the 3rd optical splitter (34), optical attenuator (33), Coarse Wave Division Multiplexer (32), the 3rd optical switch (30), the second optical splitter (29), profile fiber (23), ONU
j-1oNU
1enter RN, then through the first optical splitter (14), first, second optical switch (13,12) enter the 3rd array waveguide grating (11), enter feedback light fibre (2) after multiplexing by the 3rd array waveguide grating (11), under the route of optical circulator (10), entering er-doped image intensifer (21) amplifies, then by the second array waveguide grating (25) demultiplexing, finally by amplitude receiver (26,27), received.
Claims (3)
1. a single star encircles the system that Wave division multiplexing passive optical network is realized online upgrading and defencive function more, by optical line terminal OLT (1), by 1 monomode fiber (2), connect 1 far-end node RN(3), far-end node RN(3) by profile fiber (23), connect a plurality of optical network unit rings (4), each optical network unit ring comprises M optical network unit ONU (17,18,19 ... 20,21 ... 22); It is characterized in that:
1) described optical line terminal OLT (1) is by M*N optical sender (5, 6) be connected to first array waveguide grating (7), this first array waveguide grating (7) is connected to an amplitude modulator (8) simultaneously, the output of amplitude modulator (8) is connected to the first of optical circulator (10) through an erbium-doped fiber amplifier (9), second mouthful of this optical circulator (10) connects described feedback optical fiber (2), the 3rd mouthful of optical circulator (10) is connected to second array waveguide grating (25), each delivery outlet of this second array waveguide grating (25) respectively connects respectively an amplitude receiver (26, 27),
2) described feedback optical fiber (2) and described distant-end node RN(3) in the 3rd array waveguide grating (11) be connected, described distant-end node RN(3) be that described the 3rd array waveguide grating (11) output is connected with first optical switch (12) respectively, the first port of this first optical switch (12) is connected to first optical splitter (16), first port of this optical splitter (16) then connects described profile fiber (23), the second port of this first optical splitter (16) is connected to the first port of second optical switch (13), the second port of the first optical switch (12) is connected to the second port of the second optical switch (13), the second optical switch (13) is then connected to the first port of first optical splitter (14), the second port of the first optical splitter (14) is connected to first photodiode (15), this first photodiode (15) is connected with the second optical switch (13) with the first optical switch (12) respectively again, the 3rd port of the first optical splitter (14) is connected with described profile fiber (23),
3) described profile fiber (23) is by optical network unit ONU (17,18,19,20,21,22) series connection, each optical network unit ONU comprises 1 the second optical splitter (29), 1 the 3rd optical splitter (34), 1 the second photodiode (31), 1 the 3rd optical switch (30), 1 Coarse Wave Division Multiplexer C/W(32), an adjustable optical attenuator (33), 1 reflective semiconductor optical amplifier RSOA(35), 1 light phase receiver RX
2(37), 1 light amplitude receiver RX
1(36).Under normal circumstances, described profile fiber (23) is connected with the second optical splitter (29) first ports, the second optical splitter (29) second ports are connected to the second photodiode (31), the second photodiode (31) respectively with the 3rd optical switch (30) and wavelength division multiplexer C/W(32) be connected, the second port of the 3rd optical switch (30) and Coarse Wave Division Multiplexer C/W(32) be connected, Coarse Wave Division Multiplexer C/W(32) be then connected with adjustable optical attenuator (33), adjustable optical attenuator (33) is connected with the 3rd optical splitter (34), the first port of the 3rd optical splitter (34) and reflective semiconductor optical amplifier RSOA(35) be connected, the second port of the 3rd optical splitter (34) and light amplitude receiver RX
1(36) be connected, the 3rd mouthful and light phase receiver RX of the 3rd optical splitter (34)
2(37) be connected, Coarse Wave Division Multiplexer C/W(32) second mouthful is connected with the 3rd optical switch (30) the 3rd port, and the 3rd optical switch the 4th port then connects described profile fiber (23).
2. a single star encircles the method that Wave division multiplexing passive optical network is realized online upgrading and defencive function more, adopt single star according to claim 1 to encircle ripple Wave division multiplexing passive optical network realizes the system of online upgrading and defencive function and operates more, it is characterized in that: under normal mode, during downlink transfer, optical sender (5, 6) launch the optical wavelength that N*M amplitude be loaded with downlink information is injected in 1x (N*M) the first array waveguide grating (7) simultaneously, 1x (N*M) the first array waveguide grating (7) is multiplexing to be modulated by phase-modulator PM (8), the broadcast singal of light modulated network element, modulation finishes to amplify by er-doped image intensifer (9), be injected into light circulator (10), after this optical circulator (10) route, import feedback optical fiber (2) into.Light signal enters far-end node RN(3) through 1*N the 3rd array waveguide grating (11) demultiplexing, each delivery outlet output M root light wave of 1*N the 3rd array waveguide grating (11).This M root light wave, after first, second optical switch (12,13) route, enters optical network unit ring (4).Optical wavelength enters optical network unit ONU through profile fiber (23)
jafter, under the 3rd optical switch (30) route, enter Coarse Wave Division Multiplexer C/W(32), the light wave of this optical network unit of light wave will be from Coarse Wave Division Multiplexer (32) first port outputs, enter the second optical splitter (34), all the other light waves are from Coarse Wave Division Multiplexer C/W(32) second mouthful of output, after the 3rd optical switch (30) route, enter profile fiber (23), then enter next optical network unit.The optical wavelength of this network element is from the output of Coarse Wave Division Multiplexer first, through adjustable optical attenuator, decay, then by the second optical splitter (34), be equally divided into three parts, first is reflected formula semiconductor optical amplifier (35) and modulates, for transmitting uplink information; Second portion is received and obtains downlink information by amplitude receiver (36); Third part is received and obtains broadcast message by phase receivers (37).Upward signal reflects through the second optical splitter (34), optical attenuator (33), Coarse Wave Division Multiplexer C/W(32), the 3rd optical switch (30), the second optical splitter (29), profile fiber (23), ONU
j-1oNU
1enter RN, then through the first optical splitter (14), first, second optical switch (13,12) enter the first array waveguide grating (11), enter feedback light fibre (2) after multiplexing by the first array waveguide grating (11), under the route of optical circulator (10), entering er-doped image intensifer (21) amplifies, then by the second array waveguide grating (25) demultiplexing, finally by amplitude receiver (26,27), received.
3. a kind of single star according to claim 2 encircles the method that Wave division multiplexing passive optical network is realized online upgrading and defencive function more, it is characterized in that: when being positioned at optical network unit ONU
jand optical network unit ONU (20)
j+1(21) profile fiber (23) breaks down, at distant-end node RN(3) in the first photodiode (15) upward signal energy detected and die down, control first, second optical switch (12,13) and switch, in this simultaneously, optical network unit ONU
j+1oNU
min the second photodiode (31) downstream signal cannot be detected, control the 3rd optical switch (30) and switch.First, second, third optical switch (12,13,30) enter after new state, at distant-end node RN(3) in, broadcast from the output of the first array waveguide grating (11) delivery outlet, under the first optical switch (12) route, is evenly divided into 2 parts by the first optical splitter (16), first part of signal enters profile fiber through the second optical switch (13), and first part of light signal operating path as claimed in claim 2.Second part of light signal directly enters profile fiber.Laggardly enter optical network unit (22,28,21), under the 3rd optical switch (30) route, enter Coarse Wave Division Multiplexer C/W(32), the light wave of this optical network unit of light wave will be from Coarse Wave Division Multiplexer C/W(32) first output, enter the 3rd optical splitter (34), all the other light waves are from Coarse Wave Division Multiplexer C/W(32) second mouthful of output, after the 3rd optical switch (30) route, enter profile fiber (23), then enter next optical network unit.The optical wavelength of this network element is from the output of Coarse Wave Division Multiplexer first, through adjustable optical attenuator, decay, then by the 3rd optical splitter (34), be equally divided into three parts, first is reflected formula semiconductor optical amplifier (35) and modulates, for transmitting uplink information; Second portion is received and obtains downlink information by amplitude receiver (36); Third part is received and obtains broadcast message by phase receivers (37).Upward signal reflects through the 3rd optical splitter (34), optical attenuator (33), Coarse Wave Division Multiplexer (32), the 3rd optical switch (30), the second optical splitter (29), profile fiber (23), ONU
j-1oNU
1enter RN, then through optical splitter (14), the second, the first optical switch (13,12) enter the first array waveguide grating (11), after multiplexing by the first array waveguide grating (11), enter feedback light fibre (2), under the route of optical circulator (10), enter er-doped image intensifer (21) and amplify, then by the second array waveguide grating (25) demultiplexing, finally by amplitude receiver (26 ... 27) receive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310549154.1A CN103595496B (en) | 2013-11-08 | 2013-11-08 | Single multi-ring Wave division multiplexing passive optical network of star realizes the system and method for online upgrading and defencive function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310549154.1A CN103595496B (en) | 2013-11-08 | 2013-11-08 | Single multi-ring Wave division multiplexing passive optical network of star realizes the system and method for online upgrading and defencive function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103595496A true CN103595496A (en) | 2014-02-19 |
| CN103595496B CN103595496B (en) | 2016-08-10 |
Family
ID=50085493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310549154.1A Expired - Fee Related CN103595496B (en) | 2013-11-08 | 2013-11-08 | Single multi-ring Wave division multiplexing passive optical network of star realizes the system and method for online upgrading and defencive function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103595496B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079344A (en) * | 2014-04-22 | 2014-10-01 | 上海大学 | System and method for achieving wave length reuse and function protection of passive optical network |
| CN104243014A (en) * | 2014-09-24 | 2014-12-24 | 上海大学 | System and scheme for implementing simple optical network unit (ONU) and protection functions of passive optical network |
| CN107526189A (en) * | 2017-10-27 | 2017-12-29 | 北方工业大学 | Light pulse amplitude, phase, shape, the integrated modulator of position |
| CN107664792A (en) * | 2016-07-28 | 2018-02-06 | 上海诺基亚贝尔股份有限公司 | Optical signal generator, optical line terminal and the method for producing optical signal |
| CN108802901A (en) * | 2018-06-15 | 2018-11-13 | 华中科技大学 | A kind of multifunctional light electric system of flexible bandwidth |
| CN111459517A (en) * | 2020-03-30 | 2020-07-28 | 中国电子科技集团公司第五十四研究所 | Master-slave equipment online program upgrading method under optical fiber ring network architecture |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741468A (en) * | 2009-12-17 | 2010-06-16 | 上海交通大学 | Wavelength division multiplexing passive optical network system supporting deflection routing multicast function |
| CN101848054A (en) * | 2010-05-06 | 2010-09-29 | 上海大学 | System and method for leading wavelength division multiplexing passive optical network to realize broadcast function with self-healing function |
| CN102075282A (en) * | 2011-02-24 | 2011-05-25 | 上海大学 | System and method for realizing dynamic wavelength scheduling and protection functions in wavelength division multiplexing passive optical network |
| CN102695101A (en) * | 2011-03-21 | 2012-09-26 | 苏州海光芯创光电科技有限公司 | Passive optical network over wavelength division multiplexing |
| US20130183039A1 (en) * | 2012-01-18 | 2013-07-18 | Telefonaktiebolaget L M Ericsson (Publ) | Selectable multiple-wavelength access for optical network units in arrayed waveguide based wavelength division multiplexing passive optical network |
-
2013
- 2013-11-08 CN CN201310549154.1A patent/CN103595496B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741468A (en) * | 2009-12-17 | 2010-06-16 | 上海交通大学 | Wavelength division multiplexing passive optical network system supporting deflection routing multicast function |
| CN101848054A (en) * | 2010-05-06 | 2010-09-29 | 上海大学 | System and method for leading wavelength division multiplexing passive optical network to realize broadcast function with self-healing function |
| CN102075282A (en) * | 2011-02-24 | 2011-05-25 | 上海大学 | System and method for realizing dynamic wavelength scheduling and protection functions in wavelength division multiplexing passive optical network |
| CN102695101A (en) * | 2011-03-21 | 2012-09-26 | 苏州海光芯创光电科技有限公司 | Passive optical network over wavelength division multiplexing |
| US20130183039A1 (en) * | 2012-01-18 | 2013-07-18 | Telefonaktiebolaget L M Ericsson (Publ) | Selectable multiple-wavelength access for optical network units in arrayed waveguide based wavelength division multiplexing passive optical network |
Non-Patent Citations (1)
| Title |
|---|
| 骆文，吴晗平，熊俊俏: "WDM-PON光接入网技术研究", 《中国新通信》, 21 September 2010 (2010-09-21) * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079344A (en) * | 2014-04-22 | 2014-10-01 | 上海大学 | System and method for achieving wave length reuse and function protection of passive optical network |
| CN104079344B (en) * | 2014-04-22 | 2018-05-01 | 上海大学 | The system and method that a kind of passive optical network realizes Wavelength reuse and defencive function |
| CN104243014A (en) * | 2014-09-24 | 2014-12-24 | 上海大学 | System and scheme for implementing simple optical network unit (ONU) and protection functions of passive optical network |
| CN104243014B (en) * | 2014-09-24 | 2017-03-15 | 上海大学 | A kind of EPON realizes the system and scheme of simple optical network unit and defencive function |
| CN107664792A (en) * | 2016-07-28 | 2018-02-06 | 上海诺基亚贝尔股份有限公司 | Optical signal generator, optical line terminal and the method for producing optical signal |
| CN107664792B (en) * | 2016-07-28 | 2019-12-17 | 上海诺基亚贝尔股份有限公司 | Optical signal generator, optical line terminal and method for generating optical signal |
| CN107526189A (en) * | 2017-10-27 | 2017-12-29 | 北方工业大学 | Light pulse amplitude, phase, shape, the integrated modulator of position |
| CN108802901A (en) * | 2018-06-15 | 2018-11-13 | 华中科技大学 | A kind of multifunctional light electric system of flexible bandwidth |
| CN111459517A (en) * | 2020-03-30 | 2020-07-28 | 中国电子科技集团公司第五十四研究所 | Master-slave equipment online program upgrading method under optical fiber ring network architecture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103595496B (en) | 2016-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102075282B (en) | System and method for realizing dynamic wavelength scheduling and protection functions in wavelength division multiplexing passive optical network | |
| KR101410158B1 (en) | System, method and relevant device for signal transmission | |
| CN103595496A (en) | System and method for achieving online upgrading of single-star multi-ring wavelength division multiplexing passive optical network and achieving protection function | |
| CN103199918A (en) | System and method using wavelength division multiplexing passive optical network to realize wavelength reuse and protection function | |
| KR101712900B1 (en) | Optical branch assembly, passive optical network and optical transmission method | |
| CN102075819A (en) | Wave time division mixed multiplexing passive optical network system | |
| WO2013087006A1 (en) | Passive optical network (pon) system, optical line terminal (olt) and optical transmission method | |
| CN104125517A (en) | Light transmission system, mode coupler and light transmission method | |
| CN103516431B (en) | Photoelectricity optical repeater, the long processing method away from box and its to upper and lower traveling optical signal | |
| CN103095372A (en) | Time-division multiplex passive optical network system and communication method based on multi-core optical fiber | |
| CN103001911B (en) | From relevant detection orthogonal frequency division multiplexing passive optical network system and transmission method | |
| CN102546020A (en) | Point-to-point optical network signal transmission method and system thereof | |
| CN104243014A (en) | System and scheme for implementing simple optical network unit (ONU) and protection functions of passive optical network | |
| CN103916206A (en) | Double-WDM-PON network architecture with mutual protection mechanism and method thereof | |
| CN103281603B (en) | Multi-wavelength passive optical network system | |
| CN103108260A (en) | Passive optical network system and uplink optical signal and downlink optical signal transmission method | |
| CN104079344A (en) | System and method for achieving wave length reuse and function protection of passive optical network | |
| CN103313153A (en) | Multi-wavelength passive optical network system | |
| CN104202091B (en) | A kind of integreted phontonics optical module | |
| RU2624771C1 (en) | Method of building a basic station of fiber-ether telecommunication system of mobile radio communication network | |
| CN104009791A (en) | Cross protection system based on resource shearing among passive optical networks | |
| CN202268989U (en) | Optical line terminal (OLT) equipment applied to Ethernet passive optical network (EPON) system | |
| CN103297872A (en) | Multi-wavelength passive optical network system | |
| CN103281624A (en) | Multi-wavelength passive optical network system | |
| CN103281610A (en) | Multi-wavelength passive optical network system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20191108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |