CN102347794B - Burst light signal receiving apparatus - Google Patents
Burst light signal receiving apparatus Download PDFInfo
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- CN102347794B CN102347794B CN201010244845.7A CN201010244845A CN102347794B CN 102347794 B CN102347794 B CN 102347794B CN 201010244845 A CN201010244845 A CN 201010244845A CN 102347794 B CN102347794 B CN 102347794B
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- direct current
- signal receiving
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- burst
- trans
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/693—Arrangements for optimizing the preamplifier in the receiver
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a burst light signal receiving apparatus which comprises: a light receiving assembly and an amplitude limit amplifier circuit unit. The light receiving assembly further comprises: a photo-detector, a transimpedance amplifier, a direct current reservation circuit 1 and a direct current offset circuit. The amplitude limit amplifier circuit unit further comprises: a group of alternating current coupling capacitors, an amplitude limit amplifier and a direct current reservation circuit 2. By using a technical scheme of the invention, the input burst light signals in a certain dynamic scope can be returned to the available burst light signals in a short time. The technical scheme of the invention can be used in a burst light signal receiver of a XENPAK passive optical network (10 GEPON).
Description
Technical field
The present invention relates to optical communication technique field, relate in particular to a kind of burst luminous signal receiving system.
Background technology
Optical communication equipment requires to receive burst luminous signal conventionally, so just requires optical communication physical layer circuit can recover in the short period of time the burst signal of telecommunication, and this brings difficulty to actual circuit design.
This contradiction is particularly outstanding in burst luminous signal receiver in ten thousand mbit ethernet EPON (10GEPON) optical line terminal transceiver modules, needs to receive the burst transmissions light signal from the 10.3125Gbps speed of optical network unit in the optical receiving circuit of ten thousand mbit ethernet passive optical network optical line terminal optical transceiver modules.
Ten thousand mbit ethernet EPON draft (the IEEE P802.3av of IEEE
tM/ D3.4, on June 18th, 2009) require optical line terminal optical-electric module handle within 800 nanoseconds to revert to the available signal of telecommunication from the burst transmissions light signal of the 10.3125Gbps speed of optical network unit, and require luminous power overload point higher than-6dBm, highly sensitive in-(the corresponding error rate is less than 10 to 28dBm
-3).
There is no at present the reception that ripe chip solution can be applicable to 10.3125Gbps speed burst luminous signal, and light signal receiving chip in the point-to-point optical communication system of 10G speed can only be applied to and receives continuous and stable light signal, cannot meet the requirement that IEEE's ten thousand mbit ethernet EPON drafts receive for burst luminous signal.
The present invention utilizes the light signal receiving chip in existing point-to-point optical communication system, change its operating characteristic by the self-built circuit in periphery, accelerate its data recovery times, and widen the dynamic duty scope of input optical signal, thereby substantially can meet the requirement that IEEE's ten thousand mbit ethernet EPON drafts receive for burst luminous signal.
Summary of the invention
The object of the invention is to propose a kind of burst luminous signal receiving system, to realize within the time faster, the input burst luminous signal of certain dynamic range is reverted to the available burst signal of telecommunication.
For realizing above object, the invention provides a kind of burst luminous signal receiving system, comprising: photodetector, with removing the trans-impedance amplifier that enables input and direct current bias input end of direct current function, one group of ac coupling capacitor and limiting amplifier.
The output of this photodetector is connected with the input of this trans-impedance amplifier; The input that enables that goes direct current function of this trans-impedance amplifier is set to forbid the unlatching of direct current function; The direct current bias input end of this trans-impedance amplifier passes through grounding through resistance; This ac coupling capacitor one end is connected with this trans-impedance amplifier output respectively; The other end of this ac coupling capacitor is connected with two inputs of this limiting amplifier respectively; The differential voltage signal of the output output burst of this limiting amplifier.
This photodetector is photodiode, preferably avalanche photodide.
The difference of the initiating terminal current value of the DC bias current value of this DC bias circuit setting and the linear amplification region of this trans-impedance amplifier is no more than 0.5mA.
This group of ac coupling capacitor is 2 capacitors.The capacitance of each capacitor is greater than 100pF, is less than 4.7nF.
This resistance is less than 10k Ω.
The input that enables that goes direct current function of this trans-impedance amplifier is set to the connected mode of forbidding that direct current function is opened, for this is removed to the input end grounding that enables of direct current function.
This limiting amplifier amplifies AC signal and direct current signal simultaneously.This limiting amplifier can be with going direct current function to enable input, and this go direct current function enable input be set to forbid direct current function open.
Burst luminous signal receiving system of the present invention, can, within the time faster, revert to the available burst signal of telecommunication the input burst luminous signal of certain dynamic range.
Brief description of the drawings
Fig. 1 is the structural representation of burst luminous signal receiving system of the present invention.
Fig. 2 is the structural representation that is applied to a kind of 10GEPON burst luminous signal receiving system of ten thousand mbit ethernet EPONs in the specific embodiment of the invention.
Embodiment
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing and by embodiment.
Fig. 1 is the structural representation of burst luminous signal receiving system of the present invention.As shown in Figure 1, a kind of burst signal receiver, comprise optical fiber receive module, amplitude limiting amplifier circuit unit, optical fiber receive module further comprises photo-detector, trans-impedance amplifier, direct current biasing circuit and forbids removing DC road, and amplitude limiting amplifier circuit unit further comprises one group of ac coupling capacitor, can amplify the limiting amplifier of direct current signal and AC signal simultaneously.
Concrete annexation is:
The output of photo-detector is connected with the input of trans-impedance amplifier, for the burst luminous signal receiving is converted to burst current signal, and delivers to trans-impedance amplifier;
Forbid that the output on removing DC road and the input that enables that goes direct current function of trans-impedance amplifier are connected, go direct current function for what forbid trans-impedance amplifier;
The output of direct current biasing circuit is connected with the direct current bias input end of trans-impedance amplifier, for the direct current of the input of trans-impedance amplifier is biased to suitable working point, and then widens the dynamic range of input optical power;
The output of trans-impedance amplifier is connected with the input of ac coupling capacitor, for the current signal receiving being converted to the voltage signal of difference, sending to limiting amplifier to do rear class and amplifies;
The output of ac coupling capacitor is connected with the input of limiting amplifier, for isolating the direct voltage of trans-impedance amplifier output and limiting amplifier input, and by regulating the capacitance of ac coupling capacitor can regulate data recovery times;
Can amplify the output of limiting amplifier of direct current signal for exporting the differential voltage signal of burst.
Fig. 2 is the structural representation of a kind of 10GEPON (10G ethernet passive optical network) burst luminous signal receiving system of being applied to ten thousand mbit ethernet EPONs in the specific embodiment of the invention.As shown in Figure 2, a kind of 10GEPON burst signal receiver, comprise avalanche diode voltage offset electric circuit, optical fiber receive module, amplitude limiting amplifier circuit unit, optical fiber receive module further comprises 10G avalanche diode, 10G trans-impedance amplifier, direct current biasing circuit and forbids removing DC road one, and amplitude limiting amplifier circuit unit further comprises ac coupling capacitor, 10G limiting amplifier and forbids removing DC road two.
Concrete annexation is:
The output of bias voltage of avalanche photodiode circuit is connected with the power input of 10G avalanche diode, produces the required bias voltage of 10G avalanche diode;
The output of 10G avalanche diode is connected with the input of 10G trans-impedance amplifier, for the 10GEPON uplink burst light signal receiving is converted to burst current signal, and delivers to 10G trans-impedance amplifier;
Forbid that the output on removing DC road one and the input that enables that goes direct current function of 10G trans-impedance amplifier are connected, in the present embodiment by the input end grounding that enables that goes direct current function of 10G trans-impedance amplifier, that just can forbid 10G trans-impedance amplifier goes direct current function, it should be noted that direct current biasing circuit cannot normally be worked if do not forbid this function.
The output of direct current biasing circuit is connected with the direct current bias input end of 10G trans-impedance amplifier, for the direct current of the input of 10G trans-impedance amplifier is biased to suitable working point, and then widen the dynamic range of input optical power, can regulate by resistance in the present embodiment the DC bias current of the input of 10G trans-impedance amplifier, this resistance is less than 10K Ω, in the present embodiment, this resistance adopts 1K Ω, 5K Ω, 10K Ω all can realize object of the present invention.Best direct current is setovered near the initiating terminal of the linear amplification region in 10G trans-impedance amplifier under normal circumstances, the difference of the initiating terminal current value of the linear amplification region of this DC bias current value and described trans-impedance amplifier is no more than 0.5mA, in the present embodiment, this DC bias current is-400 μ A.The output of 10G trans-impedance amplifier is connected with the input of ac coupling capacitor, for the current signal receiving being converted to the voltage signal of difference, sending to 10G limiting amplifier to do rear class and amplifies.
The output of ac coupling capacitor is connected with the input of 10G limiting amplifier, for isolating the direct voltage of 10G trans-impedance amplifier output and 10G limiting amplifier input, and by regulating the capacitance of ac coupling capacitor can regulate data recovery times, this ac coupling capacitor is 2 capacitors, each capacitor electrode capacitance is greater than 100pF, is less than 4.7nF, in an embodiment, the value of electric capacity adopts respectively 100pF, 1000pF, 4.7nF, all can realize effect of the present invention.The input resistance of electric capacity and 10G limiting amplifier has formed RC charge-discharge circuit in the present embodiment, and the time that discharges and recharges of this circuit has also just determined the data recovery time of the present embodiment.Forbid that the output on removing DC road two and the input that enables that goes direct current function of 10G limiting amplifier are connected, go direct current function for what forbid 10G limiting amplifier, in the present embodiment by the input end grounding that enables that goes direct current function of 10G limiting amplifier, that just can forbid 10G limiting amplifier goes direct current function.
The output of 10G limiting amplifier is for exporting the burst differential voltage signal of 10GEPON to the burst clock data recoverer part of rear class.
Specifically describe the workflow of this 10GEPON burst luminous signal receiving system below:
10EPON uplink burst optical signals 10G avalanche diode changes into burst current signal, the DC bias current of this current signal and direct current bias circuit controls is superimposed is zoomed into differential voltage signal afterwards by 10G trans-impedance amplifier, and this voltage signal has removed and continued to zoom into by 10G limiting amplifier the differential voltage signal that meets certain digital level amplitude requirement after direct voltage composition and export from 10GEPON burst luminous signal receiving system after ac coupling capacitor.
The above; be only preferably embodiment of the present invention, but protection scope of the present invention is not limited to this, any people who is familiar with this technology is in the disclosed technical scope of the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.
Claims (9)
1. a burst luminous signal receiving system, is characterized in that:
Comprise:
Photodetector;
With the trans-impedance amplifier that enables input and direct current bias input end that goes direct current function;
One group of ac coupling capacitor; With
Limiting amplifier;
The output of described photodetector is connected with the input of described trans-impedance amplifier; The input that enables that goes direct current function of described trans-impedance amplifier is set to forbid the unlatching of direct current function; The direct current bias input end of described trans-impedance amplifier passes through grounding through resistance; Described ac coupling capacitor one end is connected with described trans-impedance amplifier output respectively; The other end of described ac coupling capacitor is connected with the input of described limiting amplifier respectively; The differential voltage signal of the output output burst of described limiting amplifier.
2. burst luminous signal receiving system according to claim 1, is characterized in that: described photodetector is photodiode.
3. burst luminous signal receiving system according to claim 2, is characterized in that: described photodiode is avalanche photodide.
4. burst luminous signal receiving system according to claim 1, is characterized in that: one group of described ac coupling capacitor is 2 capacitors.
5. burst luminous signal receiving system according to claim 4, is characterized in that: the electric capacity of described capacitor is greater than 100pF, is less than 4.7nF.
6. burst luminous signal receiving system according to claim 1, is characterized in that: described resistance is less than 10k Ω.
7. burst luminous signal receiving system according to claim 1, it is characterized in that: the connected mode that input is set to forbid that direct current function is opened that enables of going direct current function of described trans-impedance amplifier, for by the described input end grounding that enables that goes direct current function.
8. burst luminous signal receiving system according to claim 1, is characterized in that: described limiting amplifier amplifies AC signal and direct current signal simultaneously.
9. burst luminous signal receiving system according to claim 8, is characterized in that: described limiting amplifier is with going direct current function to enable input, and described in go direct current function to enable input to be set to forbid that direct current function opens.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010244845.7A CN102347794B (en) | 2010-08-04 | 2010-08-04 | Burst light signal receiving apparatus |
| US12/918,381 US8369714B2 (en) | 2010-08-04 | 2010-08-16 | Burst optical signal receiving device |
| PCT/CN2010/076021 WO2012016388A1 (en) | 2010-08-04 | 2010-08-16 | Burst optical signal receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010244845.7A CN102347794B (en) | 2010-08-04 | 2010-08-04 | Burst light signal receiving apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102347794A CN102347794A (en) | 2012-02-08 |
| CN102347794B true CN102347794B (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010244845.7A Active CN102347794B (en) | 2010-08-04 | 2010-08-04 | Burst light signal receiving apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102347794B (en) |
| WO (1) | WO2012016388A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095369B (en) * | 2012-10-26 | 2017-06-16 | 青岛海信宽带多媒体技术有限公司 | A kind of rapid signal detection circuit |
| CN106026940B (en) * | 2016-04-27 | 2018-12-18 | 厦门优迅高速芯片有限公司 | A kind of DC bias circuit of trans-impedance amplifier |
| CN109075870B (en) * | 2016-09-30 | 2020-12-15 | 华为技术有限公司 | Signal processing device, optical line terminal, and communication system |
| CN108155879A (en) * | 2016-12-06 | 2018-06-12 | 武汉欧易光电科技股份有限公司 | A kind of burst mode preamplifier for exporting TTL signal |
| CN108390725B (en) * | 2018-03-30 | 2021-06-11 | 青岛海信宽带多媒体技术有限公司 | Optical module receiving circuit and optical module |
| CN108731669B (en) * | 2018-04-13 | 2022-03-04 | 深圳一清创新科技有限公司 | Positioning terminal |
| CN109257101B (en) * | 2018-09-11 | 2021-06-01 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| WO2020052601A1 (en) * | 2018-09-11 | 2020-03-19 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN110515490B (en) * | 2019-08-27 | 2023-05-05 | 广州华欣电子科技有限公司 | Signal processing circuit |
| 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 |
| CN113949449B (en) * | 2021-09-24 | 2023-11-17 | 昂纳科技(深圳)集团股份有限公司 | Photodiode detection circuit, optical module, monitoring system and monitoring method thereof |
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|---|---|---|---|---|
| CN1307409A (en) * | 2000-01-27 | 2001-08-08 | 华为技术有限公司 | Single-fiber two-way integral optical module for burst reception |
| CN1545224A (en) * | 2003-11-27 | 2004-11-10 | 武汉电信器件公司 | Burst mode optical receiver |
| CN101510802A (en) * | 2008-12-16 | 2009-08-19 | 成都优博创技术有限公司 | Circuit for measuring outburst mode optical signal power |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100446443C (en) * | 2005-08-26 | 2008-12-24 | 电子科技大学 | Optical burst-mode receiver |
| JP4935422B2 (en) * | 2007-02-28 | 2012-05-23 | 株式会社日立製作所 | Preamplifier and optical receiver using the same |
-
2010
- 2010-08-04 CN CN201010244845.7A patent/CN102347794B/en active Active
- 2010-08-16 WO PCT/CN2010/076021 patent/WO2012016388A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307409A (en) * | 2000-01-27 | 2001-08-08 | 华为技术有限公司 | Single-fiber two-way integral optical module for burst reception |
| CN1545224A (en) * | 2003-11-27 | 2004-11-10 | 武汉电信器件公司 | Burst mode optical receiver |
| CN101510802A (en) * | 2008-12-16 | 2009-08-19 | 成都优博创技术有限公司 | Circuit for measuring outburst mode optical signal power |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012016388A1 (en) | 2012-02-09 |
| CN102347794A (en) | 2012-02-08 |
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Address after: 7, No. 216, No. 610041 South City Road, Chengdu hi tech Zone, Sichuan, 101, 201 Patentee after: Nine letter asset management Limited by Share Ltd. Address before: 7, No. 216, No. 610041 South City Road, Chengdu hi tech Zone, Sichuan, 101, 201 Patentee before: SICHUAN SUPERXON INFORMATION TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20160606 Address after: 610041, D, 7, Tianfu Software Park, Chengdu hi tech Zone, Sichuan, 201 Patentee after: CHENGDU SUPERXON INFORMATION TECHNOLOGY Co.,Ltd. Address before: 7, No. 216, No. 610041 South City Road, Chengdu hi tech Zone, Sichuan, 101, 201 Patentee before: Nine letter asset management Limited by Share Ltd. |