CN103618975B - Burst optical signal producing circuit as well as method for producing burst optical signals - Google Patents
Burst optical signal producing circuit as well as method for producing burst optical signals Download PDFInfo
- Publication number
- CN103618975B CN103618975B CN201310686363.0A CN201310686363A CN103618975B CN 103618975 B CN103618975 B CN 103618975B CN 201310686363 A CN201310686363 A CN 201310686363A CN 103618975 B CN103618975 B CN 103618975B
- Authority
- CN
- China
- Prior art keywords
- signal
- burst
- optical
- unit
- telecommunication
- 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.)
- Active
Links
Landscapes
- Optical Communication System (AREA)
Abstract
The invention discloses a burst optical signal producing circuit as well as a method for producing burst optical signals. The burst optical signal producing circuit comprises a programmable error code unit, a plurality of optical decay units as well as a photosynthesis way unit which are connected in sequence; each optical decay unit receives electric signals under the effect of multiple burst enable signals output by the programmable error code unit and converts the electric signals into optical signals to decay; each decayed optical signal is converted into an optical signal by the photosynthesis way unit to output; an electric signal shunt unit is connected between the programmable error code unit and each optical decay unit; the programmable error code unit outputs a burst electric signal separated at a time domain to the electric signal shunt unit; the electric signal shunt unit separates the burst electric signal into multiple paths of identical burst electric signals, and transmits the multiple paths of identical burst electric signals respectively to each optical decay unit. According to the burst optical signal producing circuit disclosed by the invention, the equipment connection can be simplified; moreover, various parameters of the burst optical signals can be adjusted; the application range can be expanded.
Description
Technical field
The present invention relates to light burst measurement field, it is specifically a kind of burst luminous signal being applied in optical module test
Produce circuit and the method producing burst luminous signal.
Background technology
EPON has been deployed in the broadband access network of all parts of the world in a large number because of the advantage of big bandwidth low cost,
And demand has been always maintained at the impetus of sustainable growth.Passive optical network is typically by optical line terminal (olt, optical
Line terminal), optical network unit (onu, optical network unit) and Optical Distribution Network (odn, optical
Distribution network) composition.It is downstream signal from olt through 1:n light passive splitter to onu, the company of working in
Continuous mode of operation.It is referred to as upward signal from onu to olt, work in burst mode.
Up technology is the core technology of pon system, how to realize the measurement to upward signal and has also just become pon with assessment
Emphasis in system test and difficult point.As the olt optical module of one of the critical component in pon system, the burst of its receiver
Receptivity is directly connected to the service behaviour of whole pon system, therefore seems particularly heavy to the Performance Evaluation of burst receiver
Will.What burst receiver received is the uplink burst optical signal of time-division, the amplitude of these burst luminous signals and phase place phase not to the utmost
With burst receiver must is fulfilled for certain sensitivity, saturation and dynamic range index and could process these burst luminous signals.
In typical burst reception performance simulation assessment system, typically require in test system, there is two-way burst light letter
Number, the phase and amplitude of this two-way burst luminous signal and inter-packet gap can be adjusted.In current burst measurement system, there are two kinds
The method producing two-way burst luminous signal.
A kind of method includes programming bit error rate tester 1, burst type light transmitting mould as shown in figure 1, burst luminous signal produces circuit
Block 21 and bursting light emission module 31, optical attenuator 22 and optical attenuator 32, optical combiner 4.Wherein, programming bit error rate tester 1
Produce two independent burst signals of telecommunication, input bursting light emission module 21 and bursting light emission module 31 produce two respectively
Road burst luminous signal, two-way burst luminous signal forms up burst luminous signal through optical combiner 4.
In circuit shown in Fig. 1, programming bit error rate tester 1 needs to produce the two-way burst signal of telecommunication.It is currently used for burst to connect
The Error Detector of Acceptance Tests is generally parallel Error Detector, produces the two-way burst signal of telecommunication and need to adopt two pattern generators, not only increases
Oil (gas) filling device is invested, and signal connects also comparatively laborious.
Another kind of method is that circuit includes programming bit error rate tester 1, burst type light is sent out as shown in Fig. 2 burst luminous signal produces
Penetrate module 2, optical attenuator 22 and optical attenuator 32, optical combiner 4 and optical branching device 5.Wherein, programming bit error rate tester 1 produces
Single channel burst signal of telecommunication input bursting light emission module 2, burst luminous signal is divided into two-way, wherein one tunnel through optical branching device 5
Optical signal inserts in the gap of another road burst luminous signal after fiber delay time device 6 time delay, upper needed for being formed through optical combiner 4
Row burst luminous signal.
Although the usage amount of pattern generator and bursting light emission module is all less in circuit shown in Fig. 2, but light
Road connection is more complicated, and the delay time of optical fiber is fixing, not the long width with inter-packet gap of the bag of malleable burst luminous signal
Degree, has used limitation.
Content of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of burst luminous signal to produce circuit and produce prominent
The method of luminous signal, can adjust the various parameters of burst luminous signal, expand the scope of application.
Another object of the present invention is to a kind of burst luminous signal produces circuit and the method producing burst luminous signal, can letter
The connection of change equipment, reduces production cost.
For solving above-mentioned technical problem, the technical scheme is that and be achieved in that:
A kind of burst luminous signal produces circuit, programmable error code unit that it includes being sequentially connected, multiple optical attenuation unit
And light combiner unit, respectively this optical attenuation unit is in the presence of the multichannel burst of this programmable error code unit output enables signal
Receive the signal of telecommunication and be converted to optical signal and decayed, the optical signal after the decay of each road switchs to a road light letter through light combiner unit
Number output；It is connected with signal of telecommunication branching unit between described programmable error code unit and respectively this optical attenuation unit, this is programmable
Error code unit exports a road detached burst signal of telecommunication extremely described signal of telecommunication branching unit, this signal of telecommunication branching unit in time domain
This burst signal of telecommunication is divided into the multichannel identical burst signal of telecommunication and is transmitted separately to respectively this optical attenuation unit.
Preferably, described programmable error code unit is programming bit error rate tester, and described programming bit error rate tester includes one
Individual pattern generator, described pattern generator can produce the detached burst signal of telecommunication in time domain.
Preferably, described optical attenuation unit includes bursting light emission module and optical attenuator, and respectively this burst makes
This bursting light emission module corresponding can be opened by signal, this bursting light emission module receives the signal of telecommunication in corresponding time domain,
And this signal of telecommunication is converted to optical signal transmission decay to this optical attenuator.
Preferably, described signal of telecommunication branching unit is high speed signal fan-out device.
Preferably, described smooth combiner unit is optical combiner.
Preferably, the quantity of described optical attenuation unit is two.
Another kind of technical scheme that the present invention provides:
A kind of method producing burst luminous signal, comprising:
A, the output of multiple bursty data packet loop, form a road detached burst signal of telecommunication in time domain；
B, by a road in time domain detached burst the signal of telecommunication be divided into the multichannel identical signal of telecommunication；
C, different enable signals in the presence of, receive the burst signal of telecommunication in corresponding time domain and be converted to optical signal and carry out
Decay；
D, Hou Ge road optical signal of decaying synthesize a road detached burst luminous signal in time domain.
Preferably, the quantity of described burst packet is two.
The technique effect that the present invention reaches is as follows:
1st, the present invention only needs to, using a pattern generator, decrease the resource of occupancy equipment, reduce production cost,
Simplify the connection between equipment.
2nd, the phase place of scalable burst luminous signal of the present invention, the width of amplitude, bag length and inter-packet gap, adjustment is simply accurate,
There is no limitation, the required burst of burst receiver test can be produced.
3rd, the present invention produces the method for burst luminous signal simply it is easy to operate.
Brief description
Fig. 1 is that a kind of existing burst luminous signal produces circuit；
Fig. 2 is that another kind of existing burst luminous signal produces circuit；
Fig. 3 produces circuit for burst luminous signal of the present invention；
Fig. 4 produces the method flow diagram of optical signal for the present invention.
[critical piece symbol description]
1 programming bit error rate tester
2 bursting light emission modules
21 bursting light emission modules
22 optical attenuators
31 bursting light emission modules
32 optical attenuators
4 optical combiners
5 optical branching devices
6 fiber delay time devices
100 programmable error code units
110 signal of telecommunication branching units
120 optical attenuation unit
121 bursting light emission modules
122 optical attenuators
130 optical attenuation unit
131 bursting light emission modules
132 optical attenuators
140 smooth combiner units.
Specific embodiment
As shown in figure 3, burst luminous signal of the present invention produces circuit includes programmable error code unit 100, signal of telecommunication branch list
Unit 110, multiple optical attenuation unit and light combiner unit 140.
In the present embodiment, described optical attenuation unit is provided with two altogether, respectively optical attenuation unit 120 and optical attenuation list
Unit 130.But it is not limited thereto, in actual production process, can set as needed.
Programmable error code unit 100 export a road in time domain the detached burst signal of telecommunication to signal of telecommunication branching unit 110,
The signal of telecommunication that happens suddenly is divided into the multichannel identical signal of telecommunication and is transmitted separately to described optical attenuation unit by this signal of telecommunication branching unit 110
120 and optical attenuation unit 130, described optical attenuation unit 120 and optical attenuation unit 130 export in this programmable error code unit 100
Each burst enable signal in the presence of receive the signal of telecommunication in different time domain and be converted to optical signal and decayed, the decay of each road
Optical signal afterwards switchs to a road optical signal output through light combiner unit 140.
Wherein said optical attenuation unit 120 includes bursting light emission module 121 and optical attenuator 122, described optical attenuation
Unit 130 includes bursting light emission module 131 and optical attenuator 132.Burst enables signal 1 and can open described optical attenuation unit
Bursting light emission module 121 in 120, the burst type light that burst enable signal 2 can be opened in described optical attenuation unit 130 is sent out
Penetrate module 131.
Taking optical attenuation unit 120 as a example, wherein, burst enables signal 1 and opens this bursting light emission module corresponding
121, make this bursting light emission module 121 receive the signal of telecommunication in corresponding time domain, and this signal of telecommunication is converted to optical signal
Transmit and decay to this optical attenuator 122, the optical signal transmission after decay is to light combiner unit 140.Respectively by optical attenuator 122 He
Optical signal after optical attenuator 132 decay can synthesize a road through described smooth combiner unit 140 after processing detached double in time domain
Road burst luminous signal.
Described programmable error code unit 100 can be programming bit error rate tester, and this programming bit error rate tester includes a pattern
Generator, two burst packet of editable on this pattern generator, when this pattern generator works, described two bursts
Data packet loop exports, and can form a road detached burst signal of telecommunication in time domain.So that The present invention reduces pattern occurs
The usage quantity of device, reduces production cost, simplifies the connection between equipment simultaneously.
Described signal of telecommunication branching unit 110 be high speed signal fan-out device, described high speed signal fan-out device Ke Jiang mono- tunnel when
On domain, the detached burst signal of telecommunication is divided into the two-way identical signal of telecommunication and is separately input into bursting light emission module 121 and burst
Formula light emission module 131.And two-way burst enables the signal cooperation burst signal of telecommunication and controls respectively to the transmitting of corresponding burst type light
The unlatching of module 121 and bursting light emission module 131 and shutoff.Described smooth combiner unit 140 is optical combiner.
As shown in figure 4, the method that the present invention produces burst luminous signal specifically includes that
Step 200: multiple bursty data packet loop outputs, form a road detached burst signal of telecommunication in time domain.
Multiple burst packet are edited on the pattern generator of programmable error code unit, opens pattern generator, multiple
Bursty data packet loop exports, and forms a road detached burst signal of telecommunication in time domain；And this programmable error code unit output with
The burst of burst packet equal number enables signal to each optical attenuation unit.
Wherein, only it is provided with a pattern generator in described programmable error code unit, reduces and take device resource, reduce
Manufacturing cost.In the present embodiment it is only necessary to produce detached two-way burst luminous signal in time domain, therefore can be in described pattern
On generator, editor has two burst packet.When described pattern generator works, burst packet 1 and burst packet 2
Circulation output, is formed at the detached two-way burst signal of telecommunication in a road time domain.
Step 201: the detached burst signal of telecommunication is divided into the multichannel identical signal of telecommunication in time domain by a road.
In the present embodiment, the described burst signal of telecommunication is divided into the two-way identical signal of telecommunication defeated via high speed signal fan-out device
Enter to respectively this optical attenuation unit.
Step 202: in the presence of different enable signals, receive the burst signal of telecommunication in corresponding time domain and be converted to light letter
Number decayed.
Wherein, receive and carry out signal change and decay into optical attenuation unit, described optical attenuation unit includes happening suddenly
Formula light emission module and optical attenuator, respectively this burst enables signal and opens this bursting light emission module corresponding, makes this burst
Formula light emission module receives the signal of telecommunication in corresponding time domain, and this signal of telecommunication is converted to optical signal transmission to this optical attenuator
Decay, the optical signal transmission after decay is to light combiner unit.
When pattern generator exports the burst signal of telecommunication 1, corresponding burst enables signal 1 and opens bursting light emission module
121, the burst signal of telecommunication 1 is converted into burst luminous signal 1；When pattern generator exports the burst signal of telecommunication 2, corresponding burst makes
Bursting light emission module 131 can be opened by signal 2, the burst signal of telecommunication 2 is converted into burst luminous signal 2.
Step 203: Hou Ge road optical signal of decaying synthesizes a road detached burst luminous signal in time domain.
Synthesize a road via the burst luminous signal of attenuator 122 and attenuator 132 decay via light combiner unit respectively to exist
Detached two-way burst luminous signal in time domain.Wherein, the phase place of any burst luminous signal, the width of amplitude, bag length and inter-packet gap
All can be adjusted as needed, adaptability is extensive.
The above, only presently preferred embodiments of the present invention, it is not intended to limit protection scope of the present invention.
Claims (7)
1. a kind of burst luminous signal produces circuit, programmable error code unit that it includes being sequentially connected, multiple optical attenuation unit with
And light combiner unit, respectively this optical attenuation unit connect in the presence of the multichannel burst of this programmable error code unit output enables signal
Receive the signal of telecommunication and be converted to optical signal and decayed, the optical signal after the decay of each road switchs to a road optical signal through light combiner unit
Output；
It is characterized in that, it is connected with signal of telecommunication branching unit between described programmable error code unit and respectively this optical attenuation unit,
This programmable error code unit exports a road detached burst signal of telecommunication extremely described signal of telecommunication branching unit, this signal of telecommunication in time domain
This burst signal of telecommunication is divided into the multichannel identical burst signal of telecommunication and is transmitted separately to respectively this optical attenuation unit by branching unit；
Described programmable error code unit is programming bit error rate tester, and described programming bit error rate tester includes a pattern generator, described
Pattern generator can produce the detached burst signal of telecommunication in time domain.
2. burst luminous signal according to claim 1 produces circuit it is characterised in that described optical attenuation unit includes happening suddenly
Formula light emission module and optical attenuator, respectively this burst enables signal and opens this bursting light emission module corresponding, this burst type
Light emission module receives the signal of telecommunication in corresponding time domain, and this signal of telecommunication is converted to optical signal transmission declines to this optical attenuator
Subtract.
3. burst luminous signal according to claim 1 produces circuit it is characterised in that described signal of telecommunication branching unit is height
Fast signal fan-out device.
4. burst luminous signal according to claim 1 produces circuit it is characterised in that described smooth combiner unit is light combining
Device.
5. burst luminous signal according to any one of claim 1 ~ 4 produces circuit it is characterised in that described optical attenuation list
The quantity of unit is two.
6. the burst luminous signal described in a kind of application claim 1 produces the method to produce burst luminous signal for the circuit, its feature
It is, comprising:
A, the output of multiple bursty data packet loop, form a road detached burst signal of telecommunication in time domain；
B, by a road in time domain detached burst the signal of telecommunication be divided into the multichannel identical signal of telecommunication；
C, different enable signals in the presence of, receive the burst signal of telecommunication in corresponding time domain and be converted to optical signal and declined
Subtract；
D, Hou Ge road optical signal of decaying synthesize a road detached burst luminous signal in time domain.
7. the method producing burst luminous signal according to claim 6 is it is characterised in that the quantity of described burst packet
For two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310686363.0A CN103618975B (en) | 2013-12-16 | 2013-12-16 | Burst optical signal producing circuit as well as method for producing burst optical signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310686363.0A CN103618975B (en) | 2013-12-16 | 2013-12-16 | Burst optical signal producing circuit as well as method for producing burst optical signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103618975A CN103618975A (en) | 2014-03-05 |
| CN103618975B true CN103618975B (en) | 2017-01-25 |
Family
ID=50169679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310686363.0A Active CN103618975B (en) | 2013-12-16 | 2013-12-16 | Burst optical signal producing circuit as well as method for producing burst optical signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103618975B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201393222Y (en) * | 2009-04-24 | 2010-01-27 | 武汉理工大学 | Burst optical signal generating device |
| CN102299741A (en) * | 2011-09-21 | 2011-12-28 | 中国电子科技集团公司第四十四研究所 | Method and device for transmitting uplink burst optical signal |
| CN203708410U (en) * | 2013-12-16 | 2014-07-09 | 武汉电信器件有限公司 | Circuit for generating burst optical signal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5633189B2 (en) * | 2010-05-25 | 2014-12-03 | 日本電気株式会社 | Burst optical signal processing apparatus and burst optical signal processing method |
-
2013
- 2013-12-16 CN CN201310686363.0A patent/CN103618975B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201393222Y (en) * | 2009-04-24 | 2010-01-27 | 武汉理工大学 | Burst optical signal generating device |
| CN102299741A (en) * | 2011-09-21 | 2011-12-28 | 中国电子科技集团公司第四十四研究所 | Method and device for transmitting uplink burst optical signal |
| CN203708410U (en) * | 2013-12-16 | 2014-07-09 | 武汉电信器件有限公司 | Circuit for generating burst optical signal |
Non-Patent Citations (1)
| Title |
|---|
| EPON突发式光发射模块的研究与开发;杨媛媛;《中国优秀硕士学位论文全文数据库（电子期刊》;20050915;正文第4.2.4节 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103618975A (en) | 2014-03-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101917226B (en) | A kind of method and optical line terminal carrying out fiber fault diagnosis in EPON | |
| CN100542072C (en) | The method of testing of passive optical network fault | |
| US20150030328A1 (en) | Network system and topology map generating method | |
| CN104221311A (en) | An arrangement at a remote node, a remote node, a central office and respective methods therein for supervision of a wavelength division multiplexed passive optical network | |
| GB2518996A (en) | Equalization delay agnostic protection switching in protected passive optical networks | |
| CN106970537B (en) | Electric power and communication semi-physical simulation system based on RTDS and SDH and construction method | |
| CN107819483A (en) | Signal transmitting apparatus and its test equipment, repeater communication equipment | |
| CN102377486B (en) | System for monitoring non-reflection faults in passive optical network (PON) optical link | |
| CN102594452A (en) | Self diagnosis passive optical network system | |
| CN104811243B (en) | Long luminous detection method and device | |
| CN202488458U (en) | Self-diagnosis passive optical network system | |
| CN103618975B (en) | Burst optical signal producing circuit as well as method for producing burst optical signals | |
| CN105610535A (en) | Round-trip time synchronization method and system for EPON (Ethernet Passive Optical Network) access service | |
| CN108603803B (en) | A kind of method and the network equipment measuring fiber dispersion coefficient | |
| CN101534163A (en) | Method for testing optical plate and device thereof | |
| CN203708410U (en) | Circuit for generating burst optical signal | |
| CN110518966B (en) | ONU positioning system and positioning method based on orthogonal coding | |
| CN105323030A (en) | Time delay compensation method and device | |
| CN104363045A (en) | Intelligent wavelength selection optical cross connection system with signal conditioning function | |
| CN209562553U (en) | A kind of burst reception signal strength instruction RSSI calibrating installation | |
| Trifonovs et al. | Optimization of a standard bidirectional DWDM solution | |
| CN201409138Y (en) | Test board | |
| CN102868444A (en) | Communication data extraction device and method of passive optical network | |
| Horvath et al. | Implementation of NG-PON2 transmission convergence layer into OPNET modeler | |
| CN202231724U (en) | Calibrating device of passive optical network optical power meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |