CN1307409A - Single-fiber two-way integral optical module for burst reception - Google Patents
Single-fiber two-way integral optical module for burst reception Download PDFInfo
- Publication number
- CN1307409A CN1307409A CN00100678A CN00100678A CN1307409A CN 1307409 A CN1307409 A CN 1307409A CN 00100678 A CN00100678 A CN 00100678A CN 00100678 A CN00100678 A CN 00100678A CN 1307409 A CN1307409 A CN 1307409A
- Authority
- CN
- China
- Prior art keywords
- circuit
- laser
- constant
- optical
- current source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The integral optical module includes an integral optical device unit comprising laser and light detector; a light data emitter unit comprising laser driving circuit and automatic light power controlling circuit capable of controlling dynamically on-line; and a light power; burst mode light receiver circuit unit comprising transresistance amplifier for current-to-voltage conversion, filter circuit, differentiator network and 0/1 edge decider circuit, all the units being connected successively. The edge decision is favorable to the receiving of burst data signal.
Description
The present invention relates to a kind of bidirectional optical module circuit, relate to the integrated single-fiber two-way integral optical module circuit of a kind of continuous emission, burst reception or rather.Be a kind ofly to be used for EPON (PON-PassiveOptical Netware) system and ATM(Asynchronous Transfer Mode) passive optical network (ATM PON) optical line terminal is the single-fiber two-way integral optical module circuit of local side (OLT-Optic Line Terminal).
In optical signal transmission network, data are transmitted in optical fiber and are adopted dual mode usually: continuous mode transmission means and burst mode transfer mode.Fig. 1 illustrates the basic structure of a kind of EPON (PON), comprise: l to N optical network unit ONU (Optical Netware Unit) is used to close the Optical Distribution Network ODN (Optical Division Netware) and the optical line terminal OLT (Optic Line Terminal) on road.In this PON, OLT is to adopt time division multiplexing tdm (Time DivisionMultiple) mode to the transmission of the downstream signal of each ONU, be that optical line terminal OLT sends data-signal by broadcast mode continuously to each optical network unit ONU of far-end, each optical network unit ONU is taken out one's own that a part of signal respectively after receiving the downlink multiframes signal.And each optical network unit ONU to the transmission of optical line terminal OLT upward signal is to adopt the multiplexing TDMA of time division multiple access (Time Division Multiple Address) mode.
Continuous mode claims normal mode again, and driving source of the optical signals that transmits under continuous mode produces, and links up between each signal frame, and its waveform is shown in the downstream signal among Fig. 1.The light signal that under burst mode, transmits, can produce by one or several driving source, this outburst mode optical signal waveform is shown in the upward signal among Fig. 1, and each optical network unit ONU only sends Frame in distributing to the time slot of oneself, then is in the emission wait state At All Other Times.Each optical network unit (ONU) happens suddenly in some or several related time-slots and sends the Frame of oneself, and it is that local side (OLT) transmits that the Frame of each optical network unit (ONU) combines in optical fiber to optical line terminal.And the data of receiving at the optical line terminal OLT side joint are bursty datas, require its receiving circuit to adjudicate fast at several bit interior focusing signals, and recover corresponding data-signal.
Because EPON (PON) adopts the networking mode of point to multiple spot, the data code flow of the up transmission of each optical network unit ONU just may bump when Optical Distribution Network ODN closes the road, therefore require optical line terminal OLT measure earlier it with each optical network unit ONU between distance, again each optical network unit ONU is carried out strict transmission timing.Simultaneously, because the distance between each optical network unit ONU and optical line terminal OLT is different, require the decay of upward signal data code flow of their transmission also should be not identical, because the amplitude difference when each signal arrives optical line terminal OLT, therefore, can not use the constant conventional optical receiver of employing decision threshold at the optical line terminal OLT end, the optical receiver that can only adopt burst mode to receive, and the amplitude of the several bit signals when beginning according to each packet signal sets up rational decision threshold, with correct reception packet signal.
The optical module of the transceiver that existing optical line terminal OLT side is adopted, its light signal send and receive with light signal all is continuous modes, invariable to the modulated current of laser input in the radiating circuit unit, thereby luminous power is constant.Decision method in its receiving circuit unit adopts the fixed threshold method, obtain decision threshold by peak detection and (signal that receives is carried out peak detection earlier, half of getting peak value again is threshold value), this decision threshold is invariable in whole receiving course, during judgement the signal higher than threshold value is judged to level"1", the signal lower than threshold value is judged to level "0".In addition, because the receiver-transmitter integrated module of this continuous mode is independent of each other, therefore require to adopt two optical signal transmission fibers on optical device.In addition, the optical module of this continuous mode transceiver can only be applicable in some transmission system to a bit, can not be applied to by in the EPON of putting the multipoint system networking (PON).
In sum, since the emission luminous power of optical line terminal OLT side laser in accordance with regulations (ITU-TG.983 suggestion) should be controlled at+2dBm extremely-4dBm between, the received optical power of optical network unit ONU side should be controlled at-and 8dBm is to (but the commercial module that meets this index is at present also invisible) between-30dBm, when and luminous power optical line terminal OLT side nearer when distance between optical line terminal OLT and optical network unit ONU was big, the optical receiving circuit of optical network unit ONU side will occur saturated; In the drive circuit for laser of existing optical line terminal OLT side, because drive current is fixed, the emission luminous power of laser is also fixed, can not onlinely dynamically adjust, thereby can't solve the optical network unit ONU side and the saturated problem of luminous power occurs, this will be unfavorable for the recovery of the receiving circuit of optical network unit ONU side to data-signal.
At present, reception to bursty data has a kind of automatic threshold to adjust scheme, as being published in IBM patent information website on June 18th, 1991, the patent No. is 5025456, name is called the United States Patent (USP) of " BURST MODE DIGITALDATARECDIVER ", the circuit theory that its automatic threshold is adjusted as shown in Figure 2, comprise the trans-impedance amplifier that connects and composes by elements such as operational amplifier IC0, finishing current/voltage changes, the decision circuit that constitutes by operational amplifier IC1, with by operational amplifier IC2 and triode Q0, Q1, current source I0, I1, the automatic threshold that capacitor C 0 connects and composes is adjusted circuit, PIN is a photo-detector among the figure, and triode Q0 and capacitor C 0 constitute quick peak-detector circuit.The core technology of this scheme is: adopt quick peak detection method to obtain decision level, and adopt between difference burst cell reset circuit reset on the decision level of a burst cell.Adjust circuit by automatic threshold the output waveform of trans-impedance amplifier is carried out detection, the peak value of the cell that obtains happening suddenly, triode Q1 export half of this peak value and as the threshold value of this burst cell, its reset circuit is taked the I1 heavy-current discharge.The signal waveform of this each key point of circuit shown in Fig. 3, guard time wherein is the reconstruction time of threshold value.
The shortcoming that technique scheme exists is:
When the DC level of trans-impedance amplifier output varies with temperature the amplitude that drift takes place and receive cell and does not change, automatic threshold is adjusted circuit can make the decision threshold that obtains behind the peak detection change because of the variation of this DC level, thereby the pulse stretching phenomenon occurs; The detection efficiency and the detection of peak-detector circuit directly affect the receiving sensitivity of bursty data and the overhead bit between bursty data settling time fast, owing to need take into account detection efficiency and detection settling time simultaneously to the quick peak detection of small-signal, when requiring the received signal dynamic range big, it realizes that technical difficulty is very big; Owing to increased reset circuit, cause system logic more complicated and loaded down with trivial details, when reset circuit broke down, whole receiving circuit was with regard to cisco unity malfunction.
The objective of the invention is to design a kind of single-fiber two-way integral optical module for burst reception, be that a kind of burst that can realize simultaneously that is used for local side (OLT) receives the integral optical module circuit of launching with conventional (continuously), can comprehensively solve aforementioned technical problem: luminous power can online dynamic control, saturated problem occurs to overcome the optical network unit ONU side; Solution is in burst mode receives, and the detection efficiency of peak-detector circuit and detection settling time are to the problem that influences of overhead bit between the receiving sensitivity of bursty data and bursty data fast; Solve the influence problem of the introducing of reset circuit to the system reliability reduction.
The object of the present invention is achieved like this: a kind of single-fiber two-way integral optical module for burst reception comprises optical device unit, optical transmission circuit unit and optical receiving circuit unit; The optical device unit includes laser, device backlight and photo-detector at least, the optical transmission circuit unit is connected with laser and includes drive circuit for laser at least, the optical receiving circuit unit is connected with photo-detector, it is characterized in that: described optical receiving circuit unit is burst mode data receiver circuit unit, is linked in sequence by the trans-impedance amplifier of realizing the current/voltage conversion, derivative network with according to the decision circuit that the edge of differentiated data carries out data decision and forms; Described optical transmission circuit unit is a continuous mode data transmission circuit unit, also includes laser automatic optical power control circuit, is connected with the device backlight and the photo-detector of described optical device unit; Described optical device unit, continuous mode data transmission circuit unit and burst mode data receiver circuit unit integral are arranged in the same optical module.
Described burst mode data receiver circuit also includes the filter circuit that is used for the filtering noise signal in the unit, and filter circuit is connected between described trans-impedance amplifier and described derivative network.
Described optical device unit is set laser device, photo-detector and the wavelength division multiplexer single fiber bi-directional plane light wave device in one.
Drive circuit for laser in the described continuous mode data transmission circuit unit is an emitter-base bandgap grading coupling light transmitter driving circuit, the difference channel and the constant-current source that comprise analog switch, resistor network, connected and composed by triode Q2, Q3, resistance R 2, R3; The input of analog switch connects reference voltage, and control end connects outer computer, and output connects resistor network one end respectively; The resistor network other end connects the voltage controling end of constant-current source; The base stage input difference electrical data signal of triode Q2, Q3 number, the collector electrode of triode Q3 connects the bias current end of laser by resistance R 3, the collector electrode of triode Q2 connects power supply by resistance R 2, and the emitter of triode Q2, Q3 connects constant-current source I2 one end, constant-current source other end ground connection.
Laser automatic optical power control circuit in the described continuous mode data transmission circuit unit comprises by resistance, electric capacity be connected in parallel RC average detecting circuit, the 3rd constant-current source, operational amplifier, the 4th constant-current source that constitutes and the RC filter that is connected and composed by resistance, capacitances in series; The inverting input of RC average detecting circuit one end, the 3rd constant-current source one end and operational amplifier connects laser light detection output dorsad, the positive input end grounding of the RC average detecting circuit other end, the 3rd constant-current source other end and operational amplifier, the voltage control termination reference power source of the 3rd constant-current source, the output of operational amplifier connects the voltage controling end of the 4th constant-current source, the 4th constant-current source one end connects RC filter and the bias current end that is connected laser, the 4th constant-current source other end and RC filter other end ground connection.
The trans-impedance amplifier of described burst mode data receiver circuit unit is connected and composed by operational amplifier and resistance, and operational amplifier is connected with described photo-detector, and the weak current that photo-detector is exported is converted to the correspondent voltage signal; Described filter circuit is the RC passive filter circuit that is connected and composed by resistance, electric capacity; Described derivative network is the passive derivative network of RC that is connected and composed by resistance, electric capacity, is used to eliminate DC component, forms the required edge of decision circuit; Described decision circuit is the regenerative circuit that is connected into by the limiting amplifier of high-gain, wide bandwidth and resistance, and constitutes circuits for triggering, adjudicates data " 0 " according to the edge of derivative network formation and reaches " 1 ".
Drive circuit for laser in the continuous mode data transmission circuit unit mainly adopts emitter-base bandgap grading coupling light transmitter driving circuit, promptly control laser emission light data-signal by the alternate conduction of controlling a pair of difference pipe, because differential pair tube all is operated in unsaturation and non-cut-off state, therefore switch transition time weak point can be realized the modulation of two-forty.Adjust analog switch K1 and can change the resistance that is connected in series with constant-current source I2, thereby change the current value that flows through constant-current source I2, reach the purpose of online dynamic adjustments laser emission luminous power.Laser automatic optical power control circuit in the continuous mode data transmission circuit unit by the bias current of control laser, promptly carries out average detection, the reverse transmitting power of controlling laser of amplifying by the light dorsad to the emission light signal.
Single-fiber two-way integral optical module for burst reception of the present invention comprises single fiber bi-directional optical device unit, continuous mode data transmission circuit unit and the burst mode data receiver circuit unit of integrated setting.Single fiber bi-directional optical device unit wherein adopts the structure of two wavelength division multiplexing, Build-in WDM multiplexer (WDM).Continuous mode data transmission circuit unit adopts drive circuit for laser and the automatic optical power control circuit that luminous power can online dynamic control, overcomes laser and fixes, launches luminous power and can not online dynamic control cause the optical receiving circuit of optical network unit ONU side to be prone to saturated phenomenon owing to drive current.Burst mode data receiver circuit unit then adopts and is fit to the edge Technology of Judgment that burst mode receives, being beneficial to data recovers, can overcome in the background technology detection efficiency of peak-detector circuit fast and detection settling time to the receiving sensitivity of bursty data and the influence property of the overhead bit between bursty data, and the introducing of reset circuit is to the problems such as reduction of system reliability.Also can reduce simultaneously the cost of product.
Further specify technology of the present invention below in conjunction with embodiment and accompanying drawing.
Fig. 1 is the basic structure block diagram of a kind of EPON (PON)
Fig. 2 is the electrical schematic diagram that automatic threshold is adjusted circuit in the background technology
Fig. 3 is the waveform schematic diagram of key point in Fig. 2 electrical schematic diagram
Fig. 4 is the principle structure block diagram of single-fiber two-way integral optical module for burst reception of the present invention
Fig. 5 is the waveform schematic diagram of burst mode data receiver circuit cell edges judgement principle among Fig. 4
Fig. 6 is the enforcement circuit diagram of burst mode data receiver circuit unit among Fig. 4
Fig. 7 is the enforcement circuit diagram of drive circuit for laser among Fig. 4
Fig. 8 is the enforcement circuit diagram of laser automatic optical power control circuit among Fig. 4
Address before the explanation of Fig. 1 to Fig. 3, repeat no more.
Referring to Fig. 4, and in conjunction with referring to Fig. 5, the principle structure of single-fiber two-way integral optical module for burst reception of the present invention shown in Fig. 4, the principle of the data receiver circuit of burst mode shown in Fig. 5 cell edges judgement.Form by single fiber bi-directional optical device unit 41, continuous mode data transmission circuit unit 42 and burst mode data receiver circuit unit 43.
Single fiber bi-directional optical device unit 41 is that set laser device, photo-detector, wavelength division multiplexer are in the plane light wave device of one, laser emission light signal center wavelength is 1550nm, the centre wavelength of photo-detector receiving optical signals is 1310nm, for solving the single fiber bi-directional transmission of light signal, in optical device, be provided with the wavelength division multiplexer of two wavelength-divisions, be used for the 1310nm light signal of optical fiber and the separate optical signals of 1550nm are opened, isolation is-40dBm.
Continuous mode data transmission circuit unit 42 is connected with laser in the single fiber bi-directional optical device unit 41, form by drive circuit for laser 421 and laser automatic optical power control circuit 422, be respectively applied for the automatic control of online dynamic control of luminous power and luminous power.Drive circuit for laser 421 is used for the differential electrical data DIN with input, / DIN is converted into the light data-signal, laser automatic optical power control circuit 422 monitoring lasers are the size of luminous power dorsad, when if reasons such as Yin Wendu rising of emission luminous power or laser ageing diminish, by its negative-feedback circuit laser bias current is increased, to keep constant emission luminous power, otherwise, when if reasons such as emission luminous power Yin Wendu reduction become big, then by its negative-feedback circuit laser bias current is reduced again, remain unchanged substantially with the Output optical power of keeping laser.
Burst mode data receiver circuit unit 43 is connected with photo-detector in the single fiber bi-directional optical device unit 41, be used for light data-signal with optical fiber input and revert to a pair of differential electrical data (+signal output ,-signal output) output, be linked in sequence by trans-impedance amplifier 431, filter circuit 432, derivative network 433 and the decision circuit 434 of realizing the current/voltage conversion and form.Its judgement principle is the level state of adjudicating data according to the edge of derivative network dateout, as the rising edge judgement is " 1 " data, the trailing edge judgement is " 0 " data, as shown in Figure 5.The edge judgement can prevent that decision circuit 434 from entering saturation condition or cut-off state too early, and makes it always work in magnifying state, to improve the dynamic range of received signal, more helps the reception of bursty data signal.It is for preventing that decision circuit 434 is with the useful data signal of noise signal erroneous judgement for receiving that filter circuit 432 is set.Because what the edge Technology of Judgment adopted is from resetting, making the system logic complicated problems so can reduce because of introducing reset circuit.
Referring to Fig. 6, the enforcement circuit of burst mode data receiver circuit unit 43 among Fig. 4 shown in the figure.Comprise the trans-impedance amplifier that is made of operational amplifier IC4, the weak current that photo-detector PIN is exported is converted to the correspondent voltage signal; The RC passive filter circuit that connects and composes by resistance R 12, R13, capacitor C 3, carry out sufficient filtering to received signal, to prevent that judging by accident or disorderly declaring from appearring in decision circuit thereafter, adopting the RC passive filter circuit is to introduce noise in order to eliminate himself in filtering; The passive derivative network of RC that connects and composes by resistance R 14, R15, capacitor C 4, C5, be used for eliminating the DC component of burst, forming the required edge of decision circuit, adopt the passive derivative network of RC, also is to introduce noise in order to eliminate himself in additive process; Connect into regenerative circuit by the limiting amplifier I5 of high-gain, wide bandwidth and resistance R 16, R17, constitute circuits for triggering, adjudicate data according to the edge that derivative network forms.Be about to the rising edge judgement and be " 1 " data, the trailing edge judgement is " 0 " data.Resistance R 18, R19 are that decision circuit is the load of circuits for triggering among the figure.D point, e point are a pair of differential signals by derivative network output among the figure, when Vd＞Ve, and decision circuit output high level, when Vd＜Ve, the decision circuit output low level.
Referring to Fig. 7, the enforcement circuit of drive circuit for laser 421 in the data transmission of continuous mode shown in the figure circuit unit 42 is emitter-base bandgap grading coupling light transmitter driving circuits.The difference channel and the constant-current source I2 that comprise analog switch K1, resistor network R4A, R4B (during enforcement plural resistance can be arranged), connect and compose by triode Q2, Q3 etc.The input of analog switch K1 connects reference voltage Vref, and control end INO connects outer computer, and output connects resistor network R4A, R4B one end respectively.The other end of resistor network R4A, R4B connects the voltage controling end of constant-current source I2.The base stage input difference electrical data signal DIN of triode Q2, Q3 ,/DIN, the collector electrode of Q3 connects laser LD by resistance R 3, the collector electrode of Q2 connects power supply by resistance R 2, the emitter of triode Q2, Q3 connects constant-current source I2 one end, constitute the virtual earth end of difference channel, constant-current source other end ground connection.
Triode Q2, Q3 are a pair of difference pipe, by the differential electrical data DIN of input ,/DIN control respectively Q2, Q3 alternate conduction, end and control laser emission light data-signal.When A point current potential among the figure added B point current potential greater than the conducting current potential of Q3, Q2 was in conducting state, and electric current is by the R2-Q2-I2 loop; When A point current potential added B point current potential less than the conducting current potential of Q3, Q2 was in cut-off state, and electric current is by the LD-R3-Q3-I2 loop.The conducting of Q2, Q3 with by with input difference electrical data signal DIN ,/variation of DIN level changes, but the size that flows through electric current when conducting is identical, when the Q3 conducting, electric current is by laser LD, make it send light signal with the input electrical signal waveform similarity, the electric current that flows through constant-current source I2 then is the drive current of laser.
Analog switch K1 is subjected to external signal INO control and changes the resistance value that its output is connected in series with constant-current source I2, thereby controls the current value of I2, reaches the purpose of online dynamic control laser luminous power, receives the requirement of luminous power to adapt to the optical network unit ONU side joint.Because constant-current source I2 has played the effect of differential pair tube Q2, Q3 emitter-coupled circuit feedback resistance, thereby can form strong negative feedback, helps the output waveform of stable laser LD.
Because drive circuit for laser 421 has adopted the NPN triode in the continuous mode data transmission circuit unit 42, and bigger bandwidth is arranged, emission rate can reach 622Mb/s.
Referring to Fig. 8, the enforcement circuit of laser automatic optical power control circuit in the data transmission of continuous mode shown in the figure circuit unit 42, by to laser dorsad light monitor the purpose that reaches control laser luminous power.Comprise by resistance R 5, capacitor C 1 be connected in parallel average detecting circuit, constant-current source I3, operational amplifier IC3, constant-current source I4 that constitutes and the RC filter that is connected in series and constitutes by resistance R 10, capacitor C 2.
For improving the detection efficiency of average detecting circuit, the value of capacitor C 1 suitably should be got greatly the speed of its RC time constant decision luminous power control.Constant-current source I3 is set enters saturation condition for preventing the excessive operational amplifier IC3 that makes of luminous power.The inverting input of constant-current source I3 one end concatenation operation amplifier IC3, the voltage controling end of constant-current source I3 connects reference power source Vref by resistance R 9.MD is the output current of the laser tube of detection, and this electric current deducts the photoelectric current that the electric current that flows through constant-current source I3 is detection backlight, can change the photoelectric current size of detection backlight by adjusting resistance R 9.The photoelectric current of detection backlight removes to control constant-current source I4 through the current/voltage conversion with after the anti-phase amplification of operational amplifier IC3, and the electric current that flows through constant-current source I4 is the bias current of control laser luminous power.The magnification ratio of operational amplifier IC3 is by the ratio decision of resistance R 6 with R7.Be used for eliminating overshoot phenomenon and the ringing that the laser transmit data waveform occurs by resistance R 10, the capacitor C 2 RC filter that constitutes that is connected in series, constant-current source I4 and the bias current place that is connected directly to laser after the RC filter is connected in series (tie point) are with level and smooth output waveform.This custom-designed overshoot circuit that disappears can not influence the photosignal waveform of emission when biasing changes, more help receiving.
The course of work of circuit can further specify as follows: when the luminous power of laser becomes big, by output MD backlight, after R5, the detection of C1 average, the anti-phase amplification of operational amplifier IC3, remove to control constant-current source I4, the electric current that flows through I4 is reduced, thereby the biasing of laser is descended, reach the purpose that reduces the laser luminous power; Otherwise then make the electrorheological that flows through I4 big, thereby the biasing of laser is risen, reach the purpose that increases the laser luminous power.
Single-fiber two-way integral optical module for burst reception of the present invention, in the emission light signal center wavelength is 1550nm, when receiving optical signals centre wavelength was 1310nm, between-4dBm, luminous power is online dynamically to be controlled in the scope of 0-4dBm the emission luminous power of laser at+2dBm.Light can be controlled in 0 ℃ to 70 ℃ temperature range automatically ± excursion of 1.5dBm in, in the threshold value reconstruction time of 155.52Mb/s, 5bit data-signal, the reception saturation of receiving circuit is-7dBm, receiving sensitivity is-32dBm, receive dynamic range and can arrive 25dBm, the circuit design of this optical module meets the requirement of Class B in the ITU-TG.983 suggestion fully, and product can reach commercial requirement.
Claims (9)
1. a single-fiber two-way integral optical module for burst reception comprises optical device unit, optical transmission circuit unit and optical receiving circuit unit; The optical device unit includes laser, pipe backlight and photo-detector at least, the optical transmission circuit unit is connected with laser and includes drive circuit for laser at least, the optical receiving circuit unit is connected with photo-detector, it is characterized in that: described optical receiving circuit unit is burst mode data receiver circuit unit, is linked in sequence by the trans-impedance amplifier of realizing the current/voltage conversion, derivative network with according to the decision circuit that the edge of differentiated data carries out data decision and forms; Described optical transmission circuit unit is a continuous mode data transmission circuit unit, also includes laser automatic optical power control circuit, is connected with the pipe backlight and the photo-detector of described optical device unit; Described optical device unit, continuous mode data transmission circuit unit and burst mode data receiver circuit unit integral are arranged in the same optical module.
2. a kind of single-fiber two-way integral optical module for burst reception according to claim 1, it is characterized in that: described burst mode data receiver circuit also includes the filter circuit that is used for the filtering noise signal in the unit, and filter circuit is connected between described trans-impedance amplifier and described derivative network.
3. a kind of single-fiber two-way integral optical module for burst reception according to claim 2 is characterized in that: described filter circuit is the RC passive filter circuit that is connected and composed by resistance, electric capacity.
4. a kind of single-fiber two-way integral optical module for burst reception according to claim 1 is characterized in that: described optical device unit is set laser device, pipe backlight, photo-detector and the wavelength division multiplexer single fiber bi-directional plane light wave device in one.
5. according to claim 1 or 2 or 3 or 4 described a kind of single-fiber two-way integral optical module for burst reception, it is characterized in that: the drive circuit for laser in the described continuous mode data transmission circuit unit, be an emitter-base bandgap grading coupling light transmitter driving circuit, the difference channel and the constant-current source that comprise analog switch, resistor network, connect and compose by triode Q2, Q3, resistance R 2, R3; The input of analog switch connects reference voltage, and control end connects outer computer, and output connects resistor network one end respectively; The resistor network other end connects the voltage controling end of constant-current source; The base stage input difference electrical data signal of triode Q2, Q3 number, the collector electrode of triode Q3 connects the bias current end of laser by resistance R 3, the collector electrode of triode Q2 connects power supply by resistance R 2, and the emitter of triode Q2, Q3 connects constant-current source I2 one end, constant-current source other end ground connection.
6. according to claim 1 or 2 or 3 or 4 described a kind of single-fiber two-way integral optical module for burst reception, it is characterized in that: the laser automatic optical power control circuit in the described continuous mode data transmission circuit unit comprises by resistance, electric capacity be connected in parallel RC average detecting circuit, the 3rd constant-current source, operational amplifier, the 4th constant-current source that constitutes and the RC filter that is connected and composed by resistance, capacitances in series; The inverting input of RC average detecting circuit one end, the 3rd constant-current source one end and operational amplifier connects laser light detection output dorsad, the positive input end grounding of the RC average detecting circuit other end, the 3rd constant-current source other end and operational amplifier, the voltage control termination reference power source of the 3rd constant-current source, the output of operational amplifier connects the voltage controling end of the 4th constant-current source, the 4th constant-current source one end connects RC filter and the bias current end that is connected laser, the 4th constant-current source other end and RC filter other end ground connection.
7. according to claim 1 or 2 or 3 or 4 described a kind of single-fiber two-way integral optical module for burst reception, it is characterized in that: the trans-impedance amplifier of described burst mode data receiver circuit unit is connected and composed by operational amplifier and resistance, operational amplifier is connected with described photo-detector, and the weak current that photo-detector is exported is converted to the correspondent voltage signal.
8. according to claim 1 or 2 or 3 or 4 described a kind of single-fiber two-way integral optical module for burst reception, it is characterized in that: described derivative network is the passive derivative network of RC that is connected and composed by resistance, electric capacity, be used to eliminate DC component, form the required edge of decision circuit.
9. according to claim 1 or 2 or 3 or 4 described a kind of single-fiber two-way integral optical module for burst reception, it is characterized in that: described decision circuit is the regenerative circuit that is connected into by the limiting amplifier of high-gain, wide bandwidth and resistance, and the formation circuits for triggering, adjudicate data " 0 " according to the edge of derivative network formation and reach " 1 ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001006789A CN1147074C (en) | 2000-01-27 | 2000-01-27 | Single-fiber two-way integral optical module for burst reception |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001006789A CN1147074C (en) | 2000-01-27 | 2000-01-27 | Single-fiber two-way integral optical module for burst reception |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1307409A true CN1307409A (en) | 2001-08-08 |
| CN1147074C CN1147074C (en) | 2004-04-21 |
Family
ID=4575610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001006789A Expired - Fee Related CN1147074C (en) | 2000-01-27 | 2000-01-27 | Single-fiber two-way integral optical module for burst reception |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1147074C (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006063510A1 (en) * | 2004-12-13 | 2006-06-22 | Huawei Technologies Co., Ltd. | Pon and data communication methodthereof |
| CN100463380C (en) * | 2004-12-27 | 2009-02-18 | 中兴通讯股份有限公司 | Bias circuit for direct modulated laser |
| CN101374359B (en) * | 2008-09-20 | 2010-12-29 | 青岛海信宽带多媒体技术股份有限公司 | Light transmit-receive integrated module for myriad million light line terminal |
| CN101938677A (en) * | 2010-09-25 | 2011-01-05 | 索尔思光电（成都）有限公司 | 10G EPON (Ethernet Passive Optical Network) single-fiber bidirectional energy-saving optical module |
| CN102215103A (en) * | 2009-12-15 | 2011-10-12 | 美国博通公司 | System and method for converting upstream impulse mode data to continuous mode data |
| CN102256186A (en) * | 2010-05-20 | 2011-11-23 | 宁波高新区晓圆科技有限公司 | Optical module of novel passive optical network |
| CN102347794A (en) * | 2010-08-04 | 2012-02-08 | 成都优博创技术有限公司 | Burst light signal receiving apparatus |
| CN101145848B (en) * | 2007-10-25 | 2012-05-30 | 青岛海信光电科技股份有限公司 | Optical receiving-transmission integrated module for 1000M passive optical network office |
| CN105637784A (en) * | 2013-09-30 | 2016-06-01 | 阿尔卡特朗讯 | Optical line terminal for a passive optical wavelength division multiplex network |
| US9419706B2 (en) | 2011-05-05 | 2016-08-16 | Huawei Technologies Co., Ltd. | Single fiber bi-directional optical module, and transport system and method based thereon |
| CN106059669A (en) * | 2016-08-03 | 2016-10-26 | 青岛海信宽带多媒体技术有限公司 | Light receiving module |
| CN108873159A (en) * | 2018-06-19 | 2018-11-23 | 武汉电信器件有限公司 | A kind of integrated device for EDFA Erbium-Doped Fiber Amplifier |
| CN110266378A (en) * | 2019-05-29 | 2019-09-20 | 广东瑞谷光网通信股份有限公司 | A kind of method, apparatus, electronic equipment and the computer readable storage medium of on-line testing light receiving element interchannel isolation |
| CN114975677A (en) * | 2021-02-27 | 2022-08-30 | 华为技术有限公司 | Light receiving device, light receiving packaging device, related equipment and method |
-
2000
- 2000-01-27 CN CNB001006789A patent/CN1147074C/en not_active Expired - Fee Related
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100440756C (en) * | 2004-12-13 | 2008-12-03 | 华为技术有限公司 | Passive optical network and its data communication method |
| US7751712B2 (en) | 2004-12-13 | 2010-07-06 | Huawei Technologies Co., Ltd. | Passive optical network and data communication method thereof |
| WO2006063510A1 (en) * | 2004-12-13 | 2006-06-22 | Huawei Technologies Co., Ltd. | Pon and data communication methodthereof |
| CN100463380C (en) * | 2004-12-27 | 2009-02-18 | 中兴通讯股份有限公司 | Bias circuit for direct modulated laser |
| CN101145848B (en) * | 2007-10-25 | 2012-05-30 | 青岛海信光电科技股份有限公司 | Optical receiving-transmission integrated module for 1000M passive optical network office |
| CN101374359B (en) * | 2008-09-20 | 2010-12-29 | 青岛海信宽带多媒体技术股份有限公司 | Light transmit-receive integrated module for myriad million light line terminal |
| CN102215103B (en) * | 2009-12-15 | 2014-11-26 | 美国博通公司 | System and method for converting upstream impulse mode data to continuous mode data |
| CN102215103A (en) * | 2009-12-15 | 2011-10-12 | 美国博通公司 | System and method for converting upstream impulse mode data to continuous mode data |
| US9100130B2 (en) | 2009-12-15 | 2015-08-04 | Broadcom Corporation | Burst mode to continuous mode converter |
| CN102256186A (en) * | 2010-05-20 | 2011-11-23 | 宁波高新区晓圆科技有限公司 | Optical module of novel passive optical network |
| CN102347794A (en) * | 2010-08-04 | 2012-02-08 | 成都优博创技术有限公司 | Burst light signal receiving apparatus |
| CN102347794B (en) * | 2010-08-04 | 2014-07-30 | 成都优博创技术有限公司 | Burst light signal receiving apparatus |
| CN101938677B (en) * | 2010-09-25 | 2012-12-12 | 索尔思光电（成都）有限公司 | 10G EPON (Ethernet Passive Optical Network) single-fiber bidirectional energy-saving optical module |
| CN101938677A (en) * | 2010-09-25 | 2011-01-05 | 索尔思光电（成都）有限公司 | 10G EPON (Ethernet Passive Optical Network) single-fiber bidirectional energy-saving optical module |
| US9419706B2 (en) | 2011-05-05 | 2016-08-16 | Huawei Technologies Co., Ltd. | Single fiber bi-directional optical module, and transport system and method based thereon |
| CN105637784A (en) * | 2013-09-30 | 2016-06-01 | 阿尔卡特朗讯 | Optical line terminal for a passive optical wavelength division multiplex network |
| CN105637784B (en) * | 2013-09-30 | 2017-10-31 | 阿尔卡特朗讯 | Optical line terminals for passive optical wavelength division multiplexed network |
| US9853763B2 (en) | 2013-09-30 | 2017-12-26 | Alcatel Lucent | Optical line terminal for a passive optical wavelength division multiplex network |
| CN106059669A (en) * | 2016-08-03 | 2016-10-26 | 青岛海信宽带多媒体技术有限公司 | Light receiving module |
| CN108873159A (en) * | 2018-06-19 | 2018-11-23 | 武汉电信器件有限公司 | A kind of integrated device for EDFA Erbium-Doped Fiber Amplifier |
| CN108873159B (en) * | 2018-06-19 | 2021-01-01 | 武汉电信器件有限公司 | Integrated device for erbium-doped fiber amplifier |
| CN110266378A (en) * | 2019-05-29 | 2019-09-20 | 广东瑞谷光网通信股份有限公司 | A kind of method, apparatus, electronic equipment and the computer readable storage medium of on-line testing light receiving element interchannel isolation |
| CN110266378B (en) * | 2019-05-29 | 2021-10-29 | 广东瑞谷光网通信股份有限公司 | Method and device for testing isolation between light receiving device channels on line, electronic equipment and computer readable storage medium |
| CN114975677A (en) * | 2021-02-27 | 2022-08-30 | 华为技术有限公司 | Light receiving device, light receiving packaging device, related equipment and method |
| CN114975677B (en) * | 2021-02-27 | 2024-03-01 | 华为技术有限公司 | Light receiving device, light receiving package device, related apparatus and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1147074C (en) | 2004-04-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1147074C (en) | Single-fiber two-way integral optical module for burst reception | |
| CN101895350B (en) | 10G Ethernet passive network single-fiber bidirectional optical module | |
| CN101848033B (en) | Dual-rate receiving device | |
| CN101355388B (en) | Receiving apparatus and method | |
| CN101552647B (en) | Method and device for receiving optical signals | |
| CN102104431B (en) | Dual-rate receiving device in optical transceiver | |
| CN102347794B (en) | Burst light signal receiving apparatus | |
| CN101335571B (en) | Optical receiver, optical network system and light receiving method | |
| CN101854212B (en) | Dual-rate optical signal receiving device | |
| CN1574712A (en) | Optical power equalizer in a passive optical network | |
| CN104144018A (en) | Optical receiving device and method and optical receiving and emitting integrated module | |
| CN103023575B (en) | Optical burst receiving circuit for GPON LOTs (gigabit passive optical network optical line terminals) | |
| US11942985B2 (en) | 10G rate OLT terminal transceiver integrated chip based on XGSPON with DFB laser | |
| CN106559143A (en) | Optical module | |
| US20230388682A1 (en) | 10G Rate OLT Terminal Transceiver Integrated Chip Based on XGPON with DFB Laser | |
| CN102497605B (en) | Receiver circuit for optical module and optical module | |
| CN201435793Y (en) | Optical signal monitoring circuit of GPON ONU module | |
| CN106788775A (en) | Optical module | |
| CN1147075C (en) | Single-fiber two-way integral optical module for burst transmission | |
| CN100399727C (en) | Optical burst mode receiver | |
| CN1142639C (en) | Light emitting circuit with compatibility of conventional mode with burst mode | |
| CN101882958A (en) | APR (Automatic Power Reduction) protection method and device | |
| CN201937594U (en) | Optical module for Ethernet passive optical network (EPON) optical line terminal | |
| CN217590805U (en) | Optical cable master-slave route controller with 3R amplification function | |
| CN201315587Y (en) | Single-fiber three-dimensional module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040421 Termination date: 20150127 |
|
| EXPY | Termination of patent right or utility model |