CN106535010A - Optical network unit of passive optical network, and optical module thereof - Google Patents
Optical network unit of passive optical network, and optical module thereof Download PDFInfo
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- CN106535010A CN106535010A CN201510585899.2A CN201510585899A CN106535010A CN 106535010 A CN106535010 A CN 106535010A CN 201510585899 A CN201510585899 A CN 201510585899A CN 106535010 A CN106535010 A CN 106535010A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The embodiment of the present invention provides an optical network unit of a passive optical network, and an optical module thereof. The optical module comprises a laser, a driving circuit of the laser, a first resistor and a second resistor. The first resistor is connected between the anode of the light emitting diode of the laser and the driving circuit of the laser. The second resistor is connected between the cathode of the light emitting diode of the laser and the driving circuit of the laser. The optical module further comprises a first low-pass filter connected in parallel with the first resistor and connected between the anode of the light emitting diode and the driving circuit. According to the embodiments of the present invention, the driving circuit outputs a bias current and the bias current enables the normal operation of the laser. The first low-pass filter suppresses the alternating-current component of the bias current, so that optical signals emitted by the laser are more stable in frequency. Furthermore, the cost of the laser is far lower than the cost of a DFB laser. Therefore, the cost of the optical module is far smaller than the cost of an optical module provided with the DFB laser.
Description
Technical field
The present invention relates to light communication technical field, specifically, the present invention relates to a kind of passive optical network
The optical network unit and its optical module of network.
Background technology
As network IP (Internet Protocol, Internet Protocol) changes process rapidly, cause
APON based on ATM (Asynchronous Transfer Mode, asynchronous transfer mode) technical standard
(ATM Passive Optical Network, asynchronous transfer mode EPON) and BPON
(Broadband Passive Optical Network, BPON) is in commercialization and practicality
Seriously it is obstructed in terms of change.
In this context, FSAN (Full Service Access Network, Full-Services access
Net alliance) and ITU (International Telecommunication Union, International Telecommunication Union)
Technical standard with APON/BPON has redesigned new physical layer transmission rate as basic framework
And transmission convergence layer, be proposed GPON (Gigabit Passive Optical Network, gigabit without
Source optical-fiber network) technical standard.GPON has high bandwidth, high efficiency, large coverage, support many
The many merits such as user interface are planted, additionally, GPON is natural with to TDM (Time Division
Multiplexing, time division multiplex) business excellent tenability.
A kind of framework of GPON, generally includes：OLT (the Optical Line of centrally disposed local side
Terminal, optical line terminal), multiple ONU (Optical Network Unit, optical network unit),
And be connected to ODN between OLT and multiple ONU (Optical Distribution Network,
Optical distribution network).Multiple optical modules are usually provided with OLT, and the optical module in OLT passes through light
Fibre is connected with ODN, for launching downlink optical signal or receiving uplink optical signal.ONU is generally arranged
One optical module is generally set in terminal, ONU, and the optical module in ONU passes through optical fiber and ODN
It is connected, for receiving downlink optical signal or transmitting uplink optical signal.Optical module is generally connected with communication system
Connect, processed for the optical signal of reception being converted to electric signal sending to communication system, Huo Zhecong
Communication system is received after electric signal is converted to optical signal and passes through Optical Fiber Transmission.
At present, the PON (such as XGPON) of GPON and subsequent technology standard is more by countries in the world
Number operators and FTTX (Fiber To The X, intelligent acess) equipment vendors are considered as and realize access network
Service bandwidth, the preferable access network of synthesization transformation, become the main flow of optical access network.
By taking GPON as an example, in an existing GPON, multiple optical modules are generally comprised, when big rule
During mould deployment GPON, the optical module suitable for GPON of magnanimity is needed.However, being suitable at present
In GPON optical module it is relatively costly, cause to evade greatly the with high costs of deployment GPON, limit
The large-scale promotion of GPON is made.
Therefore, it is necessary to provide a kind of optical network unit and its optical mode of the lower EPON of cost
Block, to improve competitiveness.
The content of the invention
Embodiments of the invention are proposed a kind of for the existing GPON of deployment relatively costly shortcoming
The optical network unit and its optical module of EPON, to solve existing GPON and its optical module
Relatively costly problem.
The embodiment of the present invention is according on one side, there is provided a kind of optical module, including：Laser instrument and its
Drive circuit, and first and second resistance；First resistor is connected to the light-emitting diodes in the laser instrument
Between the anode of pipe and the drive circuit, second resistance be connected to the negative electrode of the light emitting diode with
Between the drive circuit, the optical module also includes：
First low pass filter, is in parallel with first resistor, is connected to the anode of the light emitting diode
Between the drive circuit.
The embodiment of the present invention additionally provides a kind of optical-fiber network list of EPON according on the other hand
Unit, its optical module include：Laser instrument and its drive circuit, and and first and second resistance；First
Resistance is connected between the anode and drive circuit of the light emitting diode in the laser instrument, second resistance
It is connected between the negative electrode of the light emitting diode and the drive circuit, the optical module also includes：
First low pass filter, is in parallel with first resistor, is connected to the anode of the light emitting diode
Between the drive circuit.
In embodiments of the invention, the first low pass filter in optical module is arranged at the drive of laser instrument
In dynamic circuit and the laser instrument between the anode of light emitting diode, and it is in parallel with first resistor, reduces
The load of the drive circuit, increases the bias current of drive circuit output, so that the laser
Device can be with normal work.Also, the first low pass filter inhibits the AC compounent in bias current,
So that the frequency of optical signal that the laser instrument is launched is more stable.
And, the cost of the laser instrument in the embodiment of the present invention is far below Distributed Feedback Laser, and first is low
The price of bandpass filter be far smaller than expensive Distributed Feedback Laser with the laser instrument of the embodiment of the present invention it
Between price difference, therefore the cost of the optical module of the embodiment of the present invention is much smaller than using Distributed Feedback Laser
The cost of optical module, can reduce optical module using the embodiment of the present invention ONU and OLT into
This, so that reduce the cost of large scale deployment PON.
The additional aspect of the present invention and advantage will be set forth in part in the description, and these will be from following
Description in become obvious, or by the present invention practice recognize.
Description of the drawings
The above-mentioned and/or additional aspect of the present invention and advantage are from retouching to embodiment below in conjunction with the accompanying drawings
Will be apparent from stating with it is easy to understand, wherein：
Configuration diagrams of the Fig. 1 for the EPON of the embodiment of the present invention；
Schematic diagrames of the Fig. 2 for the internal circuit of the optical module of the embodiment of the present invention；
Fig. 3, Fig. 4 and Fig. 5 are respectively first, second and third low pass filter of the embodiment of the present invention
The schematic diagram of internal circuit.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, its
In from start to finish same or similar label represent same or similar element or have it is same or like
The element of function.It is exemplary below with reference to the embodiment of Description of Drawings, is only used for explaining this
Invention, and be not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative used herein
" one ", " one ", " described " and " being somebody's turn to do " may also comprise plural form.It is to be further understood that
Wording " including " used in the specification of the present invention refers to there is the feature, integer, step, behaviour
Make, element and/or component, but it is not excluded that there are or add one or more other features, whole
Number, step, operation, element, component and/or their group.It should be understood that when we claim element
It is " connected " or during " coupled " to another element, it can be directly connected or coupled to other elements, or
Can also there is intermediary element in person.Additionally, " connection " used herein or " coupling " can be included wirelessly
Connection or wireless coupling.Wording "and/or" used herein includes one or more associated listing
The whole of item or any cell and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein
(including technical term and scientific terminology), with art of the present invention in those of ordinary skill
General understanding identical meaning.It should also be understood that those arts defined in such as general dictionary
Language, it should be understood that with the meaning that the meaning in the context with prior art is consistent, and remove
It is non-as here by specific definitions, otherwise will not be explained with idealization or excessively formal implication.
It was found by the inventors of the present invention that generally adopting DFB in optical module in existing GPON
(Distributed FeedBack, distributed Feedback) laser instrument, and the price of Distributed Feedback Laser compares
Costliness, causes optical module to hold at high price, and so as to cause, large scale deployment GPON's is with high costs.
The present inventor is it is considered that can be using the more cheap laser instrument of price, such as FP
(FabryPerot, Fabry Perot) laser instrument, replaces costly Distributed Feedback Laser, to reduce
The cost of optical module.
The present inventor is it has furthermore been found that in the optical module of existing GPON, drive circuit is defeated
The bias current for going out generally only just is transported to Distributed Feedback Laser by a resistance, and the present invention is implemented
Using inexpensive laser instrument in example, the bias current needed for the inexpensive laser instrument is typically larger than
Bias current needed for Distributed Feedback Laser.When the laser instrument directly using the embodiment of the present invention replaces DFB
During laser instrument, bias current that the laser instrument of the embodiment of the present invention often cannot be sufficient and cannot be just
Often work.And, even if the laser instrument of the embodiment of the present invention can be with normal work, as resistance cannot
AC compounent in the bias current of suppression drive circuit output, it is easy to cause the embodiment of the present invention
The frequency shift (FS) of the optical signal of laser instrument transmitting, affects the transmission of uplink optical signal.
In embodiments of the invention, the LPF being connected between drive circuit and laser instrument is increased
Device, and cause the low pass filter and original resistor coupled in parallel.The inventors discovered that, low pass filter
The impedance of equivalent impedance less than resistance after in parallel with a resistor, equivalent to reducing the negative of drive circuit
Carry, increase the bias current of drive circuit output, the laser instrument of the embodiment of the present invention can met just
Often launch optical signal.And, low pass filter can suppress the AC compounent in bias current, can be with
So that the DC component being transported in the bias current of the laser instrument of the embodiment of the present invention is more stable, from
And ensure that the frequency of the laser instrument transmitting optical signal is more stable.
The technical scheme of the embodiment of the present invention is introduced below in conjunction with the accompanying drawings specifically.
PON (Passive Optical Network, EPON) provided in an embodiment of the present invention
Configuration diagram as shown in figure 1, including：OLT101, multiple ONU102, and it is connected to OLT101
With the ODN103 between multiple ONU102.
Wherein, OLT101 is generally arranged at central office side；Multiple light can be provided with OLT101
Module, the optical module in OLT101 are connected with ODN103 by optical fiber, for launching descending light letter
Number or receive uplink optical signal.
ONU102 is generally disposed at terminal；One optical module, ONU102 can be set in ONU102
In optical module be connected with ODN103 by optical fiber, for receiving downlink optical signal or launching up light
Signal.
Optical module is generally connected with communication system, for the optical signal of reception is converted to electric signal transmission
Processed to communication system, or electric signal is received from communication system be converted to after optical signal by light
Fine transmission.
The schematic diagram of the internal circuit of the optical module in OLT101 or ONU102 as shown in Fig. 2
Including：Laser instrument 201 and its drive circuit 202, first resistor 203 and the first low pass filter 204,
And second resistance 205.
Wherein, laser instrument 201 can be specifically FP (Fabry-Perot, Fabry-Perot) laser
Device or other costs are less than the laser instrument of Distributed Feedback Laser.
Laser instrument 201 includes：Light emitting diode 211 and photodiode 212.Light emitting diode 211
Can be specifically FP laser diodes.
The anode of light emitting diode 211 is connected with the negative electrode of photodiode 212.Photodiode
212 anode is communicated with 202 circuit of drive circuit.
Light emitting diode 211 is used for after the bias current that its cathode and anode is received, and carries out electric light
Conversion, launches optical signals.
Photodiode 212 is relative with light emitting diode 211, for receiving light emitting diode 211
The a part of laser for projecting, the light to receiving carry out opto-electronic conversion output back facet current, feed back to driving
Circuit 202, for drive circuit 202 according to the back facet current adjustment output to light emitting diode 211
Bias current, so that adjust frequency and light intensity of the optical signal that light emitting diode 211 is launched etc..
First resistor 203 is connected to the light emitting diode 211 in drive circuit 202 and laser instrument 201
Anode between.I.e. first resistor 203 is also connected to drive circuit 202 with photodiode 212
Between negative electrode.It is preferred that resistance 203 is connected to the bias current output end of drive circuit 202 and swashs
Between the anode of the light emitting diode 211 in light device 201.
First low pass filter 204 is in parallel with first resistor 203, is connected in laser instrument 201
Between the anode of light emitting diode 211 and drive circuit 202.I.e. the first low pass filter 204 also connects
It is connected between the negative electrode of drive circuit 202 and photodiode 212.It is preferred that the first LPF
Device 204 is connected to the light-emitting diodes in the bias current output end of drive circuit 202 and laser instrument 201
Between the anode of pipe 211.
Second resistance 205 is connected to the light emitting diode 211 in drive circuit 202 and laser instrument 201
Negative electrode between.
It can be seen that, the bias current of the drive circuit 202 of laser instrument 201 output, by resistance 203 with
The parallel circuit of the first low pass filter 204, the Light-Emitting Diode 211 being transported in laser instrument 201
Anode, for 211 normal work of the light emitting diode (lighting) in laser instrument 201.
Specifically, after optical module receives the optical signal output order of communication system transmission, the optical module
In drive circuit 202 never output bias current is transformed into the state of output bias current, this process
In bias current from scratch, the characteristic with alternating current, the bias current during this are main
Light emitting diode 211 and the photodiode in laser instrument 201 is exported by first resistor 203
212 so that laser instrument 201 initially enters working condition；The biased electrical of the output of circuit to be driven 202
After stream is stable, in bias current based on DC component, and pass through first resistor 203 and the first low pass
The parallel circuit of wave filter 204, the light emitting diode 211 being transported in laser instrument 201 and photoelectricity two
Pole pipe 212.
In the bias current of the output of drive circuit 202, a part of bias current passes through the first LPF
Device 204 is transported to the anode and photodiode 212 of the light emitting diode 211 in laser instrument 201
Negative electrode.By this part of bias current of the first low pass filter 204, its AC compounent is passing through
Thermal dissipation is converted to during the first low pass filter 204, equivalent to the exchange of this part bias current
Component is suppressed by the first low pass filter 204 so that the light-emitting diodes being transported in laser instrument 201
DC component in the bias current of 211 anode of pipe is more stable, so that in laser instrument 201
The frequency of the optical signal of the transmitting of light emitting diode 211 is more stable.
It is preferred that as shown in Fig. 2 in the optical module of the embodiment of the present invention, also including：It is electric with second
Hinder the second low pass filter 206 of 205 parallel connections.
Second low pass filter 206 is connected to the negative electrode of the light emitting diode 211 in optical module and driving
Between circuit 202.
Second low pass filter 206 can further filter out the biasing for flowing through the second low pass filter 206
The AC compounent of electric current so that the negative electrode in loop from light emitting diode 211 is to drive circuit 202
DC component in bias current is more stable, so that the light emitting diode in laser instrument 201
The frequency of the optical signal of 211 transmittings is more stable.
It is preferred that as shown in Fig. 2 in the optical module of the embodiment of the present invention, also including：3rd low pass
Wave filter 207.
3rd low pass filter 207 be connected to the anode of the photodiode 212 in laser instrument 201 with
Between drive circuit 202.
3rd low pass filter 207 can suppress or filter photodiode 212 defeated through opto-electronic conversion
AC compounent in the back facet current for going out so that DC component accounting increases in the back facet current, drives
Circuit 202 can more accurately adjust output and arrive according to the bigger back facet current of DC component accounting
The bias current of light emitting diode 211, so that the laser intensity that light emitting diode 211 is launched
More accurate stable.
It is preferred that the first low pass filter 204 or the second low pass filter 206 allow the electric current for passing through,
Not less than the bias current needed for 211 normal work of light emitting diode in laser instrument 201.For example,
First low pass filter 204 allows the electric current for passing through to be not less than 70mA (milliampere).
More excellent, the driving current 202 of laser instrument 201 is non-loaded in its bias current output end
In the case of, the bias current of output is not less than 90mA.
It is in fact possible to determine beforehand through experiment, in bias current to laser instrument 201 in send out
The frequency of the transmitting optical signal of optical diode 211 easily produces the frequency of the AC compounent of impact；Specific aim
Ground selects cut-off frequency to be less than the low pass filter of the frequency determined as the first LPF 204.
The cut-off frequency of the second low pass filter 206 and the 3rd low pass filter 207 can be less than the determination
The frequency for going out.
For example, light emitting diode 211 in laser instrument 201 is determined sends the frequency of optical signal most
When easily biased current intermediate frequency rate is the impact of the AC compounent of 700-800MHz (megahertz),
Low pass filter of the cut-off frequency less than 700MHz can be selected as the first low pass filter 204.
In actual applications, can be using will be the first low pass filter 204 of multiple series connection electric with first
The circuit that resistance 203 is in parallel.Can also be using by the second low pass filter 206 of multiple series connection and
The circuit that two resistance 205 are in parallel.Further, can also be using in drive circuit 202 and photoelectricity two
Connect between the anode of pole pipe 212 circuit of multiple 3rd low pass filters 207.
According to experimental verification, using above-mentioned at least one circuit for being in series with multiple low pass filters, can
So that being supplied to the Amplitude Ratio DC component of AC compounent in the bias current of light emitting diode 211
The low 40dB of amplitude (decibel) more than.At this point it is possible to think AC compounent in bias current, it is right
The frequency of the output optical signal of light emitting diode 211 does not affect.
It is more excellent, the schematic diagram of the internal circuit of the first low pass filter 204 as shown in figure 3, including：
First inductance 301, the first electric capacity 302 and the second electric capacity 303.
Wherein, the first inductance 301 and the first electric capacity 302, are all in parallel with first resistor 203, all
It is connected between the anode of light emitting diode 211 and drive circuit 202.
Second electric capacity 303, its one end are connected between the first electric capacity 301 and drive circuit 202, its
The other end is grounded.
It is preferred that suitably adjusting the first inductance 301, the first electric capacity 302 and the second electric capacity 303
Parameter, can cause the DC impedance of the first low pass filter 204 less than the impedance of first resistor 203.
Now, the characteristic according to parallel circuit, most of bias current of the output of drive circuit 202 pass through the
One low pass filter 204 is transported to the anode of the light emitting diode 211 in laser instrument 201, so that
In obtaining bias current, most of AC compounent is low pass filtering device suppression or filters so that bias current
Accounting of the accounting of middle DC component more than AC compounent, or even times over the accounting of AC compounent, send out
Optical diode 211 can be exported according to the bias current of the far super AC compounent accounting of DC component accounting
The more stable optical signal of frequency.For example, when the impedance of resistance 203 is 20 Ω or so, can be by
The DC impedance of the first low pass filter 204 is adjusted to no more than 10 Ω.
It is more excellent, the schematic diagram of the internal circuit of the second low pass filter 206 as shown in figure 4, including：
Second inductance 401, the 3rd electric capacity 402 and the 4th electric capacity 403.
Wherein, the second inductance 401 and the 3rd electric capacity 402, are all in parallel with second resistance 205, all
It is connected between the anode of light emitting diode 211 and drive circuit 202.
One end of 4th electric capacity 403 is connected between the 3rd electric capacity 402 and drive circuit 202, another
End ground connection.
It is preferred that suitably adjusting the ginseng of the second inductance 401, the 3rd electric capacity 402 and the 4th electric capacity 403
Number, can cause the DC impedance of the second low pass filter 206 less than the impedance of second resistance 205.
Now, from the major part of 211 negative electrode of light emitting diode to 202 sections of drive circuit in bias power loop
Bias current will be flowed by the second low pass filter 206, and the second low pass filter 206 can enter one
Step suppresses or filters the AC compounent in bias current so that in bias current, the accounting of DC component is entered
One step is lifted, the optical signal for being conducive to 211 output frequency of light emitting diode more stable.
It is more excellent, the schematic diagram of the internal circuit of the 3rd low pass filter 207 as shown in figure 5, including：
3rd inductance 501, the 5th electric capacity 502 and the 6th electric capacity 503.
Wherein, the 3rd inductance 501 and the 5th electric capacity 502 are in parallel, and are both connected in laser instrument 201
Photodiode 212 anode and drive circuit 202 between.
One end of 6th electric capacity 503 is connected between the 5th electric capacity 502 and drive circuit 202, another
End ground connection.
Further, the first low pass filter 204,206 and of the second low pass filter are suitably adjusted
The parameter of inductance and electric capacity in the 3rd low pass filter 207 at least one low pass filter, can be with
The frequency response characteristic in the bias current loop before adjustment drive circuit 202 and laser instrument 201, association
Help BOSA (the Bi-Directional Optical that optimization laser instrument 201 or laser instrument 201 are located
Sub-Assembly, light transceiver module) peripheral circuit impedance matching.
In fact, the laser instrument in different optical modules, it may be necessary to suppress or filter in bias current not
The AC compounent of same frequency, stably to export the optical signal of different frequency.
In the embodiment of the present invention, for the first low pass filter 204,206 and of the second low pass filter
Arbitrary low pass filter in 3rd low pass filter 207, can be by suitably adjusting the low pass filter
The parameter of middle inductance and electric capacity, adjusts the cut-off frequency of the low pass filter, so as to suppressing or filtering
The AC compounent of different frequency in bias current, to adapt to the optical signal that laser instrument exports different frequency.
That is, the technical scheme of the embodiment of the present invention goes for requirement output different frequency optical signal
Optical module.
It will be understood by those skilled in the art that the ONU and its optical module of the embodiment of the present invention, can be with
Be applied in GPON, it is also possible to be applied to EPON (Ethernet Passive Optical Network,
Ethernet passive optical network), XGPON1, XGPON2 or NG-PON2 (Next
2) etc. Generation-Passive Optical Network stage2, the next-generation passive optical network stage
In EPON.Wherein, the X in XGPON1 is numeral, such as 10, now XGPON1
Specially 10GPON1.
In embodiments of the invention, the first low pass filter in optical module is arranged at the drive of laser instrument
In dynamic circuit and the laser instrument between the anode of light emitting diode, and it is in parallel with first resistor, reduces
The load of the drive circuit, increases the bias current of drive circuit output, so that the laser
Device can be with normal work.Also, the first low pass filter inhibits the AC compounent in bias current,
So that the frequency of optical signal that the laser instrument is launched is more stable.
And, the cost of the laser instrument in the embodiment of the present invention is far below Distributed Feedback Laser, and first is low
The price of bandpass filter be far smaller than expensive Distributed Feedback Laser with the laser instrument of the embodiment of the present invention it
Between price difference, therefore the cost of the optical module of the embodiment of the present invention is much smaller than using Distributed Feedback Laser
The cost of optical module, can reduce optical module using the embodiment of the present invention ONU and OLT into
This, so that reduce the cost of large scale deployment PON.
Further, the second low pass filter is also provided with the optical module in the embodiment of the present invention, can be with
Further suppress or filter the AC compounent in bias current；The 3rd low pass filtered arranged in the optical module
Ripple device, can suppress or filter the AC compounent in back facet current, contribute to drive circuit according to the back of the body
The more stable and accurate bias current of photoelectric current adjustment output.
Additionally, the parameter of inductance and electric capacity in the low pass filter in the embodiment of the present invention is adjusted, can
To adjust the frequency response characteristic in bias current loop, the impedance of optimization laser instrument peripheral circuit is assisted
Match somebody with somebody；The cut-off frequency of each low pass filter can also be adjusted, to adapt to require the light of output different frequency
The optical module of signal.
The above is only some embodiments of the present invention, it is noted that for the art
For those of ordinary skill, under the premise without departing from the principles of the invention, some improvement can also be made
And retouching, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of optical module, including：Laser instrument and its drive circuit, and first and second resistance；
First resistor is connected between the anode of the light emitting diode in the laser instrument and the drive circuit,
Second resistance is connected between the negative electrode of the light emitting diode and the drive circuit, and its feature exists
In also including：
First low pass filter, is in parallel with first resistor, is connected to the anode of the light emitting diode
Between the drive circuit.
2. optical module according to claim 1, it is characterised in that also include：
Second low pass filter, is in parallel with second resistance, is connected to the negative electrode of the light emitting diode
Between the drive circuit.
3. optical module according to claim 2, it is characterised in that also include：
3rd low pass filter, the anode of the photodiode being connected in the laser instrument and the drive
Between dynamic circuit；
Wherein, the negative electrode of the photodiode is connected with the anode of the light emitting diode.
4. the optical module according to any one of claim 1-3, it is characterised in that the laser instrument
Specially fabry perot laser.
5. optical module according to claim 3, it is characterised in that
First or second low pass filter, its cut-off frequency are less than 700MHz, and which allows to pass through
Electric current be not less than 70mA.
6. optical module according to claim 1, it is characterised in that the first low pass filter,
Including：
First inductance and the first electric capacity, are all in parallel with first resistor, are both connected to the light-emitting diodes
Between the anode of pipe and the drive circuit；
Second electric capacity, its one end are connected between first electric capacity and the drive circuit, and which is another
End ground connection.
7. optical module according to claim 2, it is characterised in that the second low pass filter,
Including：
Second inductance and the 3rd electric capacity, are all in parallel with second resistance, are both connected to the light-emitting diodes
Between the anode of pipe and the drive circuit；
4th electric capacity, its one end are connected between the 3rd electric capacity and the drive circuit, and which is another
End ground connection.
8. a kind of optical network unit of EPON, its optical module include：Laser instrument and its driving
Circuit, and and first and second resistance；First resistor is connected to the light-emitting diodes in the laser instrument
Between the anode and drive circuit of pipe, second resistance be connected to the negative electrode of the light emitting diode with it is described
Between drive circuit, it is characterised in that the optical module, also include：
First low pass filter, is in parallel with first resistor, is connected to the anode of the light emitting diode
Between the drive circuit.
9. optical network unit according to claim 8, it is characterised in that the optical module,
Also include：
Second low pass filter, is in parallel with second resistance, is connected to the negative electrode of the light emitting diode
Between the drive circuit.
10. optical network unit according to claim 9, it is characterised in that the optical module,
Also include：
3rd low pass filter, the anode of the photodiode being connected in the laser instrument and the drive
Between dynamic circuit；
Wherein, the negative electrode of the photodiode is connected with the anode of the light emitting diode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585899.2A CN106535010A (en) | 2015-09-15 | 2015-09-15 | Optical network unit of passive optical network, and optical module thereof |
| PCT/CN2016/074049 WO2017045360A1 (en) | 2015-09-15 | 2016-02-18 | Optical network unit of passive optical network and optical module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585899.2A CN106535010A (en) | 2015-09-15 | 2015-09-15 | Optical network unit of passive optical network, and optical module thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106535010A true CN106535010A (en) | 2017-03-22 |
Family
ID=58288262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510585899.2A Pending CN106535010A (en) | 2015-09-15 | 2015-09-15 | Optical network unit of passive optical network, and optical module thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106535010A (en) |
| WO (1) | WO2017045360A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110785949A (en) * | 2017-01-24 | 2020-02-11 | 华为技术有限公司 | Optical receiver |
| CN109417272B (en) * | 2018-09-20 | 2020-10-09 | 索尔思光电（成都）有限公司 | Impedance matching circuit for light emitter and methods of making and using the same |
| CN114938243A (en) * | 2022-07-22 | 2022-08-23 | 深圳市亿联无限科技有限公司 | Method and system for debugging BOSA (business-oriented architecture), debugging instrument and debugging method |
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| US11750956B2 (en) | 2017-01-24 | 2023-09-05 | Huawei Technologies Co., Ltd. | Optical receiver |
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| CN114938243A (en) * | 2022-07-22 | 2022-08-23 | 深圳市亿联无限科技有限公司 | Method and system for debugging BOSA (business-oriented architecture), debugging instrument and debugging method |
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| WO2017045360A1 (en) | 2017-03-23 |
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