CN103901551A - Optical-fiber connector and wavelength division multiplexing method of light signals - Google Patents
Optical-fiber connector and wavelength division multiplexing method of light signals Download PDFInfo
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Abstract
The invention discloses an optical-fiber connector and a wavelength division multiplexing method of light signals. One end of the optical-fiber connector is a first end face with an optical-fiber output and the other end of the optical-fiber connector is a second end face with two optical-fiber outputs. The two optical fibers output by the second end face adopt a molten coning process to manufacture a wavelength division multiplexing coupling unit in the optical-fiber connector. The optical fiber output by the first end face is connected to the wavelength division multiplexing coupling unit in the optical-fiber connector. The optical-fiber connector and the wavelength division multiplexing method include the melting-cone wavelength division multiplexing coupling unit and the light signals are coupled and separated through the wavelength division multiplexing coupling unit so that work wavelengths of a GPON and a 10 GPON can be separated to different optical fibers and a GPON ODN is enabled to have a capability of smooth evolution towards the 10GPON on the premise that a GPON ODN construction mode is not affected; and the optical-fiber connector has the characteristics of being small in size, low in insertion loss and low in cost.
Description
Technical field
The present invention relates to fiber broadband networking technology area, relate in particular to a kind of wavelength-division multiplex method of joints of optical fibre and light signal.
Background technology
In 10G GPON evolution process, in the time that existing part GPON user replaces with 10G GPON terminal, there will be GPON to coexist in the situation of same ODN network to 10G GPON at GPON.Because GPON is different with the up-downgoing wavelength that 10G GPON uses, now need in ODN, increase WDM1r device near OLT side the operation wavelength of GPON and 10G GPON is separated to different PON ports.
WDM1r device need to be arranged on ODF(Optical Distribution Frame: fibre distribution frame) in frame, Main Morphology is rack or boxlike, volume is large, need in the time of GPON networking, will be the reserved installation site of WDM1r device.And it is the 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 matters that the present invention will solve is to provide a kind of joints of optical fibre, the coupling of carrying out light signal by wavelength-division multiplex coupling unit with separate.
A kind of joints of optical fibre, comprising: 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 the second end face output adopt fused biconical taper technique to make wavelength-division multiplex coupling unit in described joints of optical fibre inside, and 1 optical fiber of described the first end face output is connected to described wavelength-division multiplex coupling unit in described joints of optical fibre inside.
According to the joints of optical fibre of the present invention embodiment, further, 1 optical fiber of described the first end face output is connected to optical splitter; 2 optical fiber of described the second end face output are connected with the OLT in GPON network and 10G GPON network respectively.
According to the joints of optical fibre of the present invention embodiment, further, described wavelength-division multiplex coupling unit by 2 optical fiber of described the second end face output respectively the uplink optical signal from GPON network and 10G GPON network of carrying, be coupled in 1 optical fiber of described the first end face output and output.
According to the joints of optical fibre of the present invention embodiment, further, on 2 optical fiber of described the second end face output, the wavelength of the uplink optical signal from GPON network and 10G GPON network of carrying is respectively respectively: 1490nm, 1577nm.
According to the joints of optical fibre of the present invention embodiment, further, described wavelength-division multiplex coupling unit by two uplink optical signals of the wavelength-division multiplex transmitting in 1 optical fiber of described the first end face output, be separated on 2 optical fiber of described the second end face output, and output in GPON network and 10G GPON network.
According to the joints of optical fibre of the present invention embodiment, further, the wavelength of two uplink optical signals of the wavelength-division multiplex transmitting in 1 optical fiber of described the first end face output is respectively: 1270nm, 1310nm.
According to the joints of optical fibre of the present invention embodiment, further, in the inside of the described joints of optical fibre and at 1 optical fiber of 2 optical fiber of described the second end face output, described the first end face output and the outer setting ceramic insertion core that described wavelength-division multiplex coupling unit connects.
The technical matters that the present invention will solve is to provide a kind of wavelength-division multiplex method of light signal, the coupling of carrying out light signal by wavelength-division multiplex coupling unit with separate.
A wavelength-division multiplex method for light signal, comprising: the GPON network that the wavelength-division multiplex coupling unit down direction in the joints of optical fibre transmits 2 optical fiber and the uplink optical signal of 10G GPON network are coupled in 1 optical fiber, and output; Described wavelength-division multiplex coupling unit by two uplink optical signals of the wavelength-division multiplex transmitting in described 1 optical fiber, be separated on described 2 optical fiber, and output in GPON network and 10G GPON OLT port; Wherein, described 1 optical fiber and described 2 optical fiber are exported respectively in the two ends of the described joints of optical fibre; Described 2 optical fiber adopt fused biconical taper technique to make described wavelength-division multiplex coupling unit in described joints of optical fibre inside, and described 1 optical fiber is connected to described wavelength-division multiplex coupling unit in described joints of optical fibre inside.
According to one embodiment of the method for the invention, further, the wavelength of the GPON network transmitting at described 2 optical fiber and the uplink optical signal of 10G GPON network is respectively: 1490nm, 1577nm; The wavelength of two uplink optical signals of the wavelength-division multiplex transmitting in described 1 optical fiber is respectively: 1270nm, 1310nm.
According to one embodiment of the method for the invention, further, described 1 optical fiber is connected to optical splitter; Described 2 optical fiber are connected with the OLT in GPON network and 10G GPON network respectively.
The wavelength-division multiplex method of the joints of optical fibre of the present invention and light signal, comprise melting cone type wavelength-division multiplex coupling unit, the coupling of carrying out light signal by wavelength-division multiplex coupling unit with separate, the operation wavelength of GPON and 10GPON can be separated to different fiber, not affecting under the prerequisite of current GPON ODN networking pattern, GPON ODN is possessed to the ability of 10GPON smooth evolution.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is according to the schematic appearance of the joints of optical fibre of the present invention embodiment;
Fig. 2 is according to the structural representation of the joints of optical fibre of the present invention embodiment;
Fig. 3 is according to the schematic diagram of an embodiment who realizes light signal conversion of the joints of optical fibre of the present invention;
Fig. 4 is the schematic diagram of realizing light signal Wavelength-converting according to the joints of optical fibre of the present invention;
Fig. 5 is according to the process flow diagram of an embodiment of the wavelength-division multiplex method of light signal of the present invention.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, 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, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.Below in conjunction with each figure and embodiment, technical scheme of the present invention is carried out to many-sided description.
GPON (Gigabit-Capable Passive Optical Network) technology is that the latest generation broadband passive light based on ITU-TG.984.x standard comprehensively accesses standard, there is high bandwidth, high-level efficiency, large coverage, the abundant many merits that waits of user interface, be considered as realizing Access Network business by most of operators broadband, the desirable technique of synthesization transformation.
GPON is by the OLT of local side (optical line terminal), the ONT/ONU of user side (ONT Optical Network Terminal or be called optical network unit), connects ODN (Optical Distribution Network) and the network management system that first two equipment is made up of single-mode fiber (SM fiber) and passive optical splitters (Splitter) and forms.
Its upstream and downstream bandwidth providing of GPON is only 1Gbps and 2.5Gbps, but carrying out and popularizing along with the large flow such as current IPTV (IPTV), high-definition television (HDTV), online game, video traffic, large broadband services, 10G GPON is in increasing to 10Gbps by 1G GPON upstream and downstream bandwidth, for guaranteeing that operator's original investment is without prejudice and the smooth upgrade of 10G GPON.
Wave division multiplexing WDM is a kind of transmission technology in optical fiber communication, it has utilized an optical fiber can transmit the feature of the light carrier of multiple different wave lengths simultaneously, optical fiber can applicable wavelength coverage be divided into several wave bands, and each wave band is used as an independently light signal for a kind of predetermined wavelength of channel transfer.The design difference of communication system, the interval width between each wavelength also has difference.
Fig. 2 is according to the structural representation of the joints of optical fibre of the present invention embodiment; As shown in Figure 2: the joints of optical fibre comprise: 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.
1 optical fiber A that 2 optical fiber of the second end face output adopt fused biconical taper technique to make 23, the first end face outputs of wavelength-division multiplex coupling unit in joints of optical fibre inside is connected to wavelength-division multiplex coupling unit 23 in joints of optical fibre inside.
According to one embodiment of present invention, the one of fused biconical taper technique is for utilizing flame to produce high temperature.Two of optical fiber or multifiber are melted together, make light be coupled into another root optical fiber from an optical fiber, realize light-dividing principle, can realize the light splitting ratio that control freely two optical fiber according to monitoring melting process simultaneously.As: 1:99 or 50:50.Can control the length of wavelength-division multiplex coupling unit 23, determine the length of wavelength-division multiplex coupling regime according to the wavelength of the light signal of required coupling, separation, on the make can control partial wave according to the Cycle Length drawing etc.
According to one embodiment of present invention, 1 optical fiber A that the first end face 21 is exported is connected to optical splitter; 2 optical fiber B, the C that the second end face 23 is exported are connected with the OLT in GPON network and 10G GPON network respectively.
According to one embodiment of present invention, wavelength-division multiplex coupling unit 23 by 2 optical fiber B, C exporting at the second end face 22 respectively the uplink optical signal from GPON network and 10G GPON network of carrying, be coupled in 1 optical fiber A that the first end face 21 exports and output.
On 2 optical fiber B, C that export at the second end face 22, the wavelength of the uplink optical signal from GPON network and 10GGPON network of carrying is respectively respectively: 1490nm, 1577nm.
Wavelength-division multiplex coupling unit 23 by two uplink optical signals of the wavelength-division multiplex transmitting in the 1 optical fiber A exporting at the first end face 21, be separated on 2 optical fiber B, the C that the second end face 22 exports, and output in GPON network and 10G GPON network.
The wavelength of two uplink optical signals of the wavelength-division multiplex transmitting in the 1 optical fiber A exporting at the first end face 21 according to one embodiment of present invention, is respectively: 1270nm, 1310nm.
According to one embodiment of present invention, the outer setting ceramic insertion core that 1 optical fiber A that 2 optical fiber B, C, the first end face 21 of exporting in the inside of the joints of optical fibre and at the second end face 22 exported and wavelength-division multiplex coupling unit 23 connect.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 large, the problem of performance difficulty, can be coupled to the GPON of down direction, 10G GPON wavelength in same optical fiber by the wavelength division multiplexer that is built in active link device inside; The GPON of up direction, 10G GPON wavelength are separated to different fiber from same optical fiber simultaneously.
The joints of optical fibre of the present invention are to adopt coupling that fused biconical taper shape WDM device realizes wavelength and separate, and utilize fused biconical taper shape WDM device volume little, and the feature that Insertion Loss is low, cost is low 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, syndeton and optical fiber.Respectively have 1 fiber-optic output face different from traditional fiber flexible jumper two ends, 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 adopt fused biconical taper technique to make coupled zone.
As shown in Figure 3 and Figure 4, in the application scenarios that GPON and 10G GPON coexist, single optical fiber output end face (A end) is connected to optical splitter direction, and double-output end face (B, C end) is not connected to GPON OLT and 10G GPON OLT.
By controlling the length of coupled zone, make the 1490nm of PON down direction, 1577nm wavelength be coupled into the output of A end from two (B, C ends); 1270nm, the 1310nm wavelength of the PON up direction of inputting from A end is separated to respectively B, C end.
Fig. 5 is according to the process flow diagram of an embodiment of the wavelength-division multiplex method of light signal of the present invention.As shown in Figure 5:
1 optical fiber and 2 optical fiber are exported respectively in the two ends of the joints of optical fibre; 2 optical fiber adopt fused biconical taper technique to make wavelength-division multiplex coupling unit in joints of optical fibre inside, and 1 optical fiber is connected to wavelength-division multiplex coupling unit in joints of optical fibre inside.
The wavelength of the GPON network transmitting at 2 optical fiber and the uplink optical signal of 10G GPON network is respectively: 1490nm, 1577nm; The wavelength of two uplink optical signals of the wavelength-division multiplex transmitting in 1 optical fiber is respectively: 1270nm, 1310nm.
The wavelength-division multiplex method of the joints of optical fibre of the present invention and light signal, comprise melting cone type WDM device, the operation wavelength of GPON and 10GPON can be separated to different fiber, not affecting under the prerequisite of current GPON ODN networking pattern, GPON ODN is possessed to the ability of 10GPON smooth evolution.
May realize in many ways method and system of the present invention.For example, can realize method and system of the present invention by any combination of software, hardware, firmware or software, hardware, firmware.The said sequence that is used for the step of method is only in order to describe, and the step of method of the present invention is not limited to above specifically described order, unless otherwise specified.In addition, in certain embodiments, can be also the program being recorded in recording medium by the invention process, these programs comprise the machine readable instructions for realizing the method according to this invention.Thereby the present invention also covers the recording medium of storing the program for carrying out the method according to this invention.
Description of the invention provides for example with for the purpose 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 for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the present invention's design to be suitable for the various embodiment with various modifications of special-purpose.
Claims (10)
1. joints of optical fibre, is characterized in that, comprising:
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 the second end face output adopt fused biconical taper technique to make wavelength-division multiplex coupling unit in described joints of optical fibre inside, and 1 optical fiber of described the first end face output is connected to described wavelength-division multiplex coupling unit in described joints of optical fibre inside.
2. the joints of optical fibre as claimed in claim 1, is characterized in that:
1 optical fiber of described the first end face output is connected to optical splitter;
2 optical fiber of described the second end face output are connected with the OLT in GPON network and 10G GPON network respectively.
3. the joints of optical fibre as claimed in claim 2, is characterized in that:
Described wavelength-division multiplex coupling unit by 2 optical fiber of described the second end face output respectively the uplink optical signal from GPON network and 10G GPON network of carrying, be coupled in 1 optical fiber of described the first end face output and output.
4. the joints of optical fibre as claimed in claim 3, is characterized in that:
On 2 optical fiber of described the second end face output, the wavelength of the uplink optical signal from GPON network and 10GGPON network of carrying is respectively respectively: 1490nm, 1577nm.
5. the joints of optical fibre as claimed in claim 4, is characterized in that:
Described wavelength-division multiplex coupling unit by two uplink optical signals of the wavelength-division multiplex transmitting in 1 optical fiber of described the first end face output, be separated on 2 optical fiber of described the second end face output, and output in GPON network and 10G GPON network.
6. the joints of optical fibre as claimed in claim 5, is characterized in that:
The wavelength of two uplink optical signals of the wavelength-division multiplex transmitting in 1 optical fiber of described the first end face output is respectively: 1270nm, 1310nm.
7. the joints of optical fibre as claimed in claim 6, is characterized in that:
In the inside of the described joints of optical fibre and at 1 optical fiber of 2 optical fiber of described the second end face output, described the first end face output and the outer setting ceramic insertion core that described wavelength-division multiplex coupling unit connects.
8. a wavelength-division multiplex method for light signal, is characterized in that, comprising:
The GPON network that wavelength-division multiplex coupling unit in the joints of optical fibre transmits 2 optical fiber and the uplink optical signal of 10GGPON network are coupled in 1 optical fiber, and output;
Described wavelength-division multiplex coupling unit by two uplink optical signals of the wavelength-division multiplex transmitting in described 1 optical fiber, be separated on described 2 optical fiber, and output in GPON network and 10G GPON network;
Wherein, described 1 optical fiber and described 2 optical fiber are exported respectively in the two ends of the described joints of optical fibre;
Described 2 optical fiber adopt fused biconical taper technique to make described wavelength-division multiplex coupling unit in described joints of optical fibre inside, and described 1 optical fiber is connected to described wavelength-division multiplex coupling unit in described joints of optical fibre inside.
9. method as claimed in claim 8, is characterized in that:
The wavelength of the GPON network transmitting at described 2 optical fiber and the uplink optical signal of 10G GPON network is respectively: 1490nm, 1577nm.
The wavelength of two uplink optical signals of the wavelength-division multiplex transmitting in described 1 optical fiber is respectively: 1270nm, 1310nm.
10. method as claimed in claim 9, is characterized in that:
Described 1 optical fiber is connected to optical splitter;
Described 2 optical fiber are connected with the OLT in GPON network and 10G GPON network respectively.
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| CN104297866A (en) * | 2014-10-17 | 2015-01-21 | 长飞光纤光缆股份有限公司 | Spatial multiplexing/demultiplexing device suitable for multi-core fiber and manufacturing method thereof |
| CN104660475A (en) * | 2015-02-05 | 2015-05-27 | 广州市地下铁道总公司 | Asymmetric passive optical fiber train bus topology structure and terminal interconnection method thereof |
| 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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| 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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