CN103901551B - The wavelength-division multiplex method of the joints of optical fibre and optical signal - Google Patents
The wavelength-division multiplex method of the joints of optical fibre and optical signal Download PDFInfo
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Abstract
The invention discloses a kind of wavelength-division multiplex method of joints of optical fibre and optical signal, one end of the joints of optical fibre is first end face with 1 optical fiber output；The other end of the joints of optical fibre is second end face with 2 optical fiber outputs；2 optical fiber of the second end face output use fused biconical taper technique to make wavelength-division multiplex coupling unit inside the joints of optical fibre, and 1 optical fiber of the first end face output is connected to wavelength-division multiplex coupling unit inside the joints of optical fibre.The joints of optical fibre of the present invention and the wavelength-division multiplex method of optical signal, comprise melting cone type wavelength-division multiplex coupling unit, the coupling of optical signal, separation is carried out by wavelength-division multiplex coupling unit, the operation wavelength of GPON and 10GPON can be separated to different optical fiber, on the premise of not affecting current GPON ODN networking pattern, making GPON ODN possess the ability to 10GPON smooth evolution, and it is little to have volume, Insertion Loss is low, the feature of low cost.
Description
Technical field
The present invention relates to fiber broadband networking technology area, particularly relate to a kind of wavelength-division multiplex method of joints of optical fibre and optical signal.
Background technology
At GPON in 10GGPON evolution process, when existing part GPON user replaces with 10GGPON terminal, it may appear that GPON coexists in the situation of same ODN network to 10GGPON.The up-downgoing wavelength used due to GPON with 10GGPON is different, now needs to increase WDM1r device in ODN near OLT side and the operation wavelength of GPON and 10GGPON is separated to different PON port.
WDM1r device needs to be arranged on ODF(OpticalDistributionFrame: fibre distribution frame) in frame, Main Morphology is rack or boxlike, volume is big, needs to reserve installation site for WDM1r device when GPON networking.And, it is FTTH fiber cable network based on PON equipment that rack or boxlike WDM1r device can increase ODN(ODN) flexible jumper quantity in network, cause ODN line hepatitis consumption to increase.
Summary of the invention
In view of this, the technical problem that the invention solves the problems that is to provide a kind of joints of optical fibre, is carried out coupling and the separation of optical signal by wavelength-division multiplex coupling unit.
A kind of joints of optical fibre, including: one end of the described joints of optical fibre is first end face with 1 optical fiber output；The other end of the described joints of optical fibre is second end face with 2 optical fiber outputs；Wherein, 2 optical fiber of described second end face output use fused biconical taper technique to make wavelength-division multiplex coupling unit inside the described joints of optical fibre, and 1 optical fiber of described first end face output is connected to described wavelength-division multiplex coupling unit inside the described joints of optical fibre.
One embodiment of the joints of optical fibre according to the present invention, further, 1 optical fiber of described first end face output is connected to beam splitter；2 optical fiber of described second end face output are connected with the OLT in GPON network and 10GGPON network respectively.
One embodiment of the joints of optical fibre according to the present invention, further, described wavelength-division multiplex coupling unit by carry respectively on 2 optical fiber of described second end face output from GPON network and the uplink optical signal of 10GGPON network, 1 optical fiber being coupled to described first end face output, and export.
One embodiment of the joints of optical fibre according to the present invention, further, the wavelength from GPON network and the uplink optical signal of 10GGPON network carried respectively on 2 optical fiber of described second end face output is respectively as follows: 1490nm, 1577nm.
One embodiment of the joints of optical fibre according to the present invention, further, described wavelength-division multiplex coupling unit by two uplink optical signals of the wavelength-division multiplex of transmission in 1 optical fiber of described first end face output, be separated on 2 optical fiber of described second end face output, and export in GPON network and 10GGPON network.
One embodiment of the joints of optical fibre according to the present invention, further, in 1 optical fiber of described first end face output, the wavelength of two uplink optical signals of the wavelength-division multiplex of transmission is respectively as follows: 1270nm, 1310nm.
One embodiment of the joints of optical fibre according to the present invention, further, the inside of the described joints of optical fibre and described second end face output 2 optical fiber, described first end face output 1 optical fiber and described wavelength-division multiplex coupling unit connect outside ceramic insertion core is set.
The technical problem that the invention solves the problems that is to provide a kind of wavelength-division multiplex method of optical signal, is carried out coupling and the separation of optical signal by wavelength-division multiplex coupling unit.
A kind of wavelength-division multiplex method of optical signal, including: GPON network and the uplink optical signal of 10GGPON network that 2 optical fiber are transmitted by the wavelength-division multiplex coupling unit down direction in the joints of optical fibre are coupled in 1 optical fiber, and export；Described wavelength-division multiplex coupling unit by two uplink optical signals of the wavelength-division multiplex of transmission in described 1 optical fiber, be separated on described 2 optical fiber, and export in GPON network and 10GGPONOLT port；Wherein, the two ends of the described joints of optical fibre export described 1 optical fiber and described 2 optical fiber respectively；Described 2 optical fiber use fused biconical taper technique to make described wavelength-division multiplex coupling unit inside the described joints of optical fibre, and, described 1 optical fiber is connected to described wavelength-division multiplex coupling unit inside the described joints of optical fibre.
According to one embodiment of the method for the invention, further, the GPON network transmitted at described 2 optical fiber and the wavelength of the uplink optical signal of 10GGPON network are respectively as follows: 1490nm, 1577nm；In described 1 optical fiber, the wavelength of two uplink optical signals of the wavelength-division multiplex of transmission is respectively as follows: 1270nm, 1310nm.
According to one embodiment of the method for the invention, further, described 1 optical fiber is connected to beam splitter；Described 2 optical fiber are connected with the OLT in GPON network and 10GGPON network respectively.
The joints of optical fibre of the present invention and the wavelength-division multiplex method of optical signal, comprise melting cone type wavelength-division multiplex coupling unit, coupling and the separation of optical signal is carried out by wavelength-division multiplex coupling unit, the operation wavelength of GPON and 10GPON can be separated to different optical fiber, on the premise of not affecting current GPONODN networking pattern, GPONODN is made to possess the ability to 10GPON smooth evolution.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic appearance of an embodiment of the joints of optical fibre according to the present invention；
Fig. 2 is the structural representation of an embodiment of the joints of optical fibre according to the present invention；
Fig. 3 is the schematic diagram of the embodiment realizing optical signal conversion of the joints of optical fibre according to the present invention；
Fig. 4 is the schematic diagram realizing optical signal Wavelength-converting of the joints of optical fibre according to the present invention；
Fig. 5 is the flow chart of an embodiment of the wavelength-division multiplex method of the optical signal according to the present invention.
Detailed description of the invention
With reference to the accompanying drawings the present invention is described more fully, the exemplary embodiment of the present invention is wherein described.Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.Below in conjunction with each figure and embodiment, technical scheme is carried out many descriptions.
GPON (Gigabit-CapablePassiveOpticalNetwork) technology is latest generation broadband passive light Integrated access standard based on ITU-TG.984.x standard, there is high bandwidth, high efficiency, large coverage, user interface is abundant waits many merits, it is considered as realizing access network business by most of operators broadband, the desirable technique of synthesization transformation.
GPON is by the OLT (optical line terminal) of local side, the ONT/ONU (ONT Optical Network Terminal or referred to as optical network unit) of user side, ODN (Optical Distribution Network) and network management system that connection first two equipment is made up of single-mode fiber (SMfiber) and passive optical splitters (Splitter) form.
Its upstream and downstream bandwidth provided of GPON is only 1Gbps and 2.5Gbps, but along with the big flow such as current IPTV (IPTV), high-definition television (HDTV), online game, video traffic, the carrying out and universal of big broadband services, 10GGPON is while increasing to 10Gbps by 1GGPON upstream and downstream bandwidth, for ensureing that operator's original investment is without prejudice and the smooth upgrade of 10GGPON.
Wave division multiplexing WDM is a kind of transmission technology in fiber optic communication, it make use of an optical fiber can transmit the feature of light carrier of multiple different wave length simultaneously, the wave-length coverage of optical fiber possible application is divided into several wave bands, and each wave band is used as the optical signal of an a kind of predetermined wavelength of independent channel transfer.The design of communication system is different, and the interval width between each wavelength also has difference.
Fig. 2 is the structural representation of an embodiment of the joints of optical fibre according to the present invention；As shown in Figure 2: the joints of optical fibre include: one end is first end face 21 with 1 optical fiber A output；The other end of the joints of optical fibre is second end face 22 with 2 optical fiber B, C outputs.
2 optical fiber of the second end face output use fused biconical taper technique to make wavelength-division multiplex coupling unit 23 inside the joints of optical fibre, and 1 optical fiber A of the first end face output is connected to wavelength-division multiplex coupling unit 23 inside the joints of optical fibre.
According to one embodiment of present invention, the one of fused biconical taper technique is for utilizing flame to produce high temperature.Optical fiber two or multifiber are melted together, make light can be coupled into another root optical fiber from an optical fiber, it is achieved light-dividing principle, can realize controlling freely the light splitting ratio of two optical fiber according to monitoring melting process simultaneously.As: 1:99 or 50:50.The length of wavelength-division multiplex coupling unit 23 can be controlled, i.e. determine the length of wavelength-division multiplex coupling regime according to the wavelength of required coupling, the optical signal of separation, on the make can control partial wave according to the Cycle Length etc. drawn.
According to one embodiment of present invention, 1 optical fiber A of the first end face 21 output is connected to beam splitter；2 optical fiber B, C of second end face 23 output are connected with the OLT in GPON network and 10GGPON network respectively.
According to one embodiment of present invention, carry respectively on 2 optical fiber B, C that wavelength-division multiplex coupling unit 23 will export at the second end face 22 from GPON network and the uplink optical signal of 10GGPON network, be coupled in 1 optical fiber A that the first end face 21 exports, and export.
The wavelength from GPON network and the uplink optical signal of 10GGPON network carried respectively on 2 optical fiber B, C of the second end face 22 output is respectively as follows: 1490nm, 1577nm.
Two uplink optical signals of the wavelength-division multiplex of transmission in 1 optical fiber A that wavelength-division multiplex coupling unit 23 will export at the first end face 21, it is separated on 2 optical fiber B, C that the second end face 22 exports, and exports in GPON network and 10GGPON network.
According to one embodiment of present invention, in 1 optical fiber A of the first end face 21 output, the wavelength of two uplink optical signals of the wavelength-division multiplex of transmission is respectively as follows: 1270nm, 1310nm.
According to one embodiment of present invention, the inside of the joints of optical fibre and second end face 22 output 2 optical fiber B, C, first end face 21 output 1 optical fiber A and wavelength-division multiplex coupling unit 23 connect outside ceramic insertion core is set.The outer enclosure shell 24 of the joints of optical fibre.
The joints of optical fibre of the present invention, for a kind of fiber active linker with wavelength-division multiplex function, solve WDM1r installing space on Practical Project big, the problem of performance difficulty, can be coupled to GPON, 10GGPON wavelength of down direction in same optical fiber by being built in the wavelength division multiplexer within active link device；GPON, 10GGPON wavelength of up direction is separated to different optical fiber from same optical fiber simultaneously.
The joints of optical fibre of the present invention are coupling and the separation using fused biconical taper shape WDM device to realize wavelength, utilize fused biconical taper shape WDM device volume little, and Insertion Loss is low, the feature of low cost, realizes WDM function in conventional SC/LC fiber active linker.
The outward appearance of the joints of optical fibre of the present invention is identical with SC/LC flexible jumper, is made up of ceramic insertion core, attachment structure and optical fiber.Being respectively arranged with 1 fiber-optic output face from traditional fiber flexible jumper two ends different, there is 1 fiber-optic output face this flexible jumper one end, and the other end has 2 fiber-optic output faces, and these two optical fiber use fused biconical taper technique to make coupled zone.
As shown in Figure 3 and Figure 4, in the application scenarios that GPON and 10GGPON coexists, single optical fiber output end face (A end) is connected to beam splitter direction, and double-output end face (B, C end) is not connected to GPONOLT and 10GGPONOLT.
By controlling the length of coupled zone so that 1490nm, 1577nm wavelength of PON down direction is coupled into the output of A end from two (B, C ends)；It is individually separated to B, C end from 1270nm, 1310nm wavelength of the PON up direction of A end input.
Fig. 5 is the flow chart of an embodiment of the wavelength-division multiplex method of the optical signal according to the present invention.As shown in Figure 5:
Step 502, GPON network and the uplink optical signal of 10GGPON network that 2 optical fiber are transmitted by the wavelength-division multiplex coupling unit in the joints of optical fibre are coupled in 1 optical fiber, and export；
Step 503, wavelength-division multiplex coupling unit by two uplink optical signals of the wavelength-division multiplex of transmission in 1 optical fiber, be separated on 2 optical fiber, and export in GPON network and 10GGPON network.
The two ends of the joints of optical fibre export 1 optical fiber and 2 optical fiber respectively；2 optical fiber use fused biconical taper technique to make wavelength-division multiplex coupling unit inside the joints of optical fibre, and, 1 optical fiber is connected to wavelength-division multiplex coupling unit inside the joints of optical fibre.
The GPON network transmitted at 2 optical fiber and the wavelength of the uplink optical signal of 10GGPON network are respectively as follows: 1490nm, 1577nm；In 1 optical fiber, the wavelength of two uplink optical signals of the wavelength-division multiplex of transmission is respectively as follows: 1270nm, 1310nm.
The joints of optical fibre of the present invention and the wavelength-division multiplex method of optical signal, comprise melting cone type WDM device, the operation wavelength of GPON and 10GPON can be separated to different optical fiber, on the premise of not affecting current GPONODN networking pattern, make GPONODN possess the ability to 10GPON smooth evolution.
The method and system of the present invention may be achieved in many ways.Such as, the method and system of the present invention can be realized by software, hardware, firmware or software, hardware, any combination of firmware.For the said sequence of step of method merely to illustrate, the step of the method for the present invention is not limited to order described in detail above, unless specifically stated otherwise.Additionally, in certain embodiments, the present invention also can be embodied as the program recorded in the recording medium, these programs include the machine readable instructions for realizing the method according to the invention.Thus, the present invention also covers the record medium of the storage program for performing the method according to the invention.
Description of the invention is given for example with for the sake of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to the principle of the present invention and actual application are more preferably described, and makes those of ordinary skill in the art it will be appreciated that the present invention thus design are suitable to the various embodiments with various amendments of special-purpose.
Claims (8)
1. joints of optical fibre, it is characterised in that including:
One end of the described joints of optical fibre is first end face with 1 optical fiber output；
The other end of the described joints of optical fibre is second end face with 2 optical fiber outputs；
Wherein, 2 optical fiber of described second end face output use fused biconical taper technique to make wavelength-division multiplex coupling unit inside the described joints of optical fibre, and 1 optical fiber of described first end face output is connected to described wavelength-division multiplex coupling unit inside the described joints of optical fibre；
Described wavelength-division multiplex coupling unit by carry respectively on 2 optical fiber of described second end face output from GPON network and the uplink optical signal of 10GGPON network, 1 optical fiber being coupled to described first end face output, and export；Described wavelength-division multiplex coupling unit by two uplink optical signals of the wavelength-division multiplex of transmission in 1 optical fiber of described first end face output, be separated on 2 optical fiber of described second end face output, and export in GPON network and 10GGPON network.
2. the joints of optical fibre as claimed in claim 1, it is characterised in that:
1 optical fiber of described first end face output is connected to beam splitter；
2 optical fiber of described second end face output are connected with the OLT in GPON network and 10GGPON network respectively.
3. the joints of optical fibre as claimed in claim 1, it is characterised in that:
The wavelength from GPON network and the uplink optical signal of 10GGPON network carried respectively on 2 optical fiber of described second end face output is respectively as follows: 1490nm, 1577nm.
4. the joints of optical fibre as claimed in claim 1, it is characterised in that:
In 1 optical fiber of described first end face output, the wavelength of two uplink optical signals of the wavelength-division multiplex of transmission is respectively as follows: 1270nm, 1310nm.
5. the joints of optical fibre as claimed in claim 1, it is characterised in that:
In the inside of the described joints of optical fibre and in 2 optical fiber of described second end face output, described 1 optical fiber of the first end face output and the outside of described wavelength-division multiplex coupling unit connection, ceramic insertion core is set.
6. the wavelength-division multiplex method of an optical signal, it is characterised in that including:
GPON network and the uplink optical signal of 10GGPON network that 2 optical fiber are transmitted by the wavelength-division multiplex coupling unit in the joints of optical fibre are coupled in 1 optical fiber, and export；
Described wavelength-division multiplex coupling unit by two uplink optical signals of the wavelength-division multiplex of transmission in described 1 optical fiber, be separated on described 2 optical fiber, and export in GPON network and 10GGPON network；
Wherein, the two ends of the described joints of optical fibre export described 1 optical fiber and described 2 optical fiber respectively；Described 1 optical fiber is connected to beam splitter；Described 2 optical fiber use fused biconical taper technique to make described wavelength-division multiplex coupling unit inside the described joints of optical fibre, and, described 1 optical fiber is connected to described wavelength-division multiplex coupling unit inside the described joints of optical fibre.
7. method as claimed in claim 6, it is characterised in that:
The GPON network transmitted at described 2 optical fiber and the wavelength of the uplink optical signal of 10GGPON network are respectively as follows: 1490nm, 1577nm；
In described 1 optical fiber, the wavelength of two uplink optical signals of the wavelength-division multiplex of transmission is respectively as follows: 1270nm, 1310nm.
8. method as claimed in claim 7, it is characterised in that:
Described 2 optical fiber are connected with the OLT in GPON network and 10GGPON network respectively.
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Cited By (1)
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| CN107577011A (en) * | 2017-10-26 | 2018-01-12 | 北极光电(深圳)有限公司 | A kind of micro optical cable interconnector with wavelength-division multiplex function |
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| CN104297866B (en) * | 2014-10-17 | 2016-03-02 | 长飞光纤光缆股份有限公司 | A kind of spatial reuse/demodulation multiplexer being applicable to multi-core fiber and preparation method thereof |
| CN104660475B (en) * | 2015-02-05 | 2017-12-15 | 广州地铁集团有限公司 | Asymmetric passive fiber train bus-line topological structure and each terminal interconnected method |
| WO2017092046A1 (en) * | 2015-12-04 | 2017-06-08 | 华为技术有限公司 | Optical device and optical transmission system |
| CN113866898A (en) * | 2021-10-13 | 2021-12-31 | 福建中科光芯光电科技有限公司 | Novel wavelength division component based on optical fiber fused coupling structure |
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