WO2017045360A1 - Unité de réseau optique de réseau optique passif et module optique de celle-ci - Google Patents

Unité de réseau optique de réseau optique passif et module optique de celle-ci Download PDF

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Publication number
WO2017045360A1
WO2017045360A1 PCT/CN2016/074049 CN2016074049W WO2017045360A1 WO 2017045360 A1 WO2017045360 A1 WO 2017045360A1 CN 2016074049 W CN2016074049 W CN 2016074049W WO 2017045360 A1 WO2017045360 A1 WO 2017045360A1
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Prior art keywords
laser
driving circuit
pass filter
optical module
optical
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PCT/CN2016/074049
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English (en)
Chinese (zh)
Inventor
郑龙
刘璐
Original Assignee
青岛海信宽带多媒体技术有限公司
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Publication of WO2017045360A1 publication Critical patent/WO2017045360A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems

Definitions

  • the present invention relates to the field of optical communication technologies, and in particular, to an optical network unit of a passive optical network and an optical module thereof. Background technique
  • Asynchronous Transfer Mode, Asynchronous Transfer Mode APON (ATM Passive Optical Network) and BPON (Broadband Passive Optical Network) are severely blocked in commercialization and practical use. .
  • FSAN Full Service Access
  • GPON Gigabit Passive Optical Network
  • ITU International Telecommunication Union
  • GPON Gigabit Passive Optical Network
  • GPON has many advantages such as high bandwidth, high efficiency, large coverage, and support for multiple user interfaces.
  • GPON has excellent support for TDM (Time Division Multiplexing) services.
  • a GPON architecture generally includes: an OLT (Optical Line Terminal) and a plurality of ONUs (Optical Network) installed at a central office end
  • OLT optical network unit
  • ODN optical network
  • a plurality of optical modules are usually disposed in the OLT.
  • the optical modules in the OLT are connected to the ODN through optical fibers, and are used to transmit downlink optical signals or receive uplink optical signals.
  • An ONU is usually installed in the terminal.
  • An optical module is usually installed in the ONU.
  • the optical module in the ONU is connected to the ODN through an optical fiber to receive downlink optical signals or transmit uplink optical signals.
  • the optical module is usually connected to the communication system for converting the received optical signal into an electrical signal for transmission to the communication system for processing, or for receiving an electrical signal from the communication system to be converted into an optical signal and then transmitted through the optical fiber.
  • an existing GPON usually includes multiple optical modules.
  • a large number of optical modules suitable for GPON are required.
  • the cost of optical modules currently applicable to GPON is relatively high, resulting in high cost of deploying GPONs, which limits the large-scale promotion of GPON.
  • Embodiments of the present invention provide an optical network unit of a passive optical network and an optical module thereof for solving the disadvantages of high cost of deploying an existing GPON, so as to solve the problem that the existing GPON and its optical module have higher cost.
  • the problem The problem.
  • an optical module includes: a laser and a driving circuit thereof, and first and second resistors; a first resistor connected to an anode of the LED in the laser and the A second resistor is connected between the driving circuit and the cathode of the light emitting diode, and the optical module further includes:
  • 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.
  • an optical network unit of a passive optical network is further provided, where the optical module includes: a laser and a driving circuit thereof, and first and second resistors; Between the anode of the LED and the driving circuit, the second resistor is connected between the cathode of the LED and the driving circuit, and the optical module further includes:
  • 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.
  • a first low pass filter in the optical module is disposed between the driving circuit of the laser and the anode of the LED in the laser, and is connected in parallel with the first resistor to reduce the driving. Circuit
  • the load increases the bias current output by the driver circuit so that the laser can operate normally.
  • the first low pass filter suppresses the AC component in the bias current such that the frequency of the optical signal emitted by the laser is more stable.
  • the cost of the laser in the embodiment of the present invention is much lower than that of the DFB laser, and the price of the first low-pass filter is much smaller than the difference between the expensive DFB laser and the laser of the embodiment of the present invention, and thus the present invention
  • the cost of the optical module of the embodiment is much lower than the cost of the optical module using the DFB laser, and the cost of the ONU and the OLT of the optical module using the embodiment of the present invention can be reduced, thereby reducing the cost of deploying the PON on a large scale.
  • FIG. 1 is a schematic structural diagram of a passive optical network according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an internal circuit of an optical module according to an embodiment of the present invention.
  • FIG. 4 and FIG. 5 are respectively schematic diagrams showing internal circuits of first, second and third low-pass filters according to an embodiment of the present invention.
  • DFB distributed
  • optical modules in existing GPONs.
  • FeedBack, distributed feedback Lasers, and DFB lasers are expensive, resulting in high price of optical modules, resulting in high cost of large-scale deployment of GPON.
  • the inventors of the present invention have considered that a less expensive laser such as a FP (FabryPer ot) laser can be used instead of a relatively expensive DFB laser to reduce the cost of the optical module.
  • a less expensive laser such as a FP (FabryPer ot) laser can be used instead of a relatively expensive DFB laser to reduce the cost of the optical module.
  • the inventors of the present invention further found that in the optical module of the existing GPON, the bias current outputted by the driving circuit is usually transmitted to the DFB laser through only one resistor, and in the embodiment of the present invention, a low-cost laser is used.
  • the bias current required for this low cost laser is typically greater than the bias current required by the DFB laser.
  • the frequency deviation of the optical signal emitted by the laser of the embodiment of the present invention is easily caused, and the uplink light is affected. Signal transmission.
  • a low pass filter connected between the driver circuit and the laser is added, and the low pass filter is connected in parallel with the original resistor.
  • the inventors have found that the equivalent impedance of the low-pass filter in parallel with the resistor is less than the impedance of the resistor, which is equivalent to reducing the load of the driving circuit and increasing the bias current of the output of the driving circuit, which can satisfy the embodiment of the present invention.
  • the laser normally emits an optical signal.
  • the low pass filter can suppress the AC component in the bias current, and can make the DC component of the bias current delivered to the laser of the embodiment of the present invention more stable, thereby ensuring the frequency of the laser emitting optical signal. more stable.
  • FIG. 1 The schematic diagram of the architecture of a PON (Passive Optical Network) provided by the embodiment of the present invention is as shown in FIG. 1 , including: an OLT 101, multiple ONUs 102, and an ODN 103 connected between the OLT 101 and multiple ONUs 102. .
  • PON Passive Optical Network
  • the OLT 101 is usually disposed at the central office; the OLT 101 can be configured with multiple optical modules.
  • the optical module in the OLT 101 is connected to the ODN 103 through an optical fiber, and is used to transmit a downlink optical signal or receive an uplink optical signal.
  • the ONU 102 is usually disposed in the terminal; an optical module can be disposed in the ONU 102, and the optical module in the ONU 102 is connected to the ODN 103 through an optical fiber, and is configured to receive a downlink optical signal or transmit an uplink optical signal.
  • the optical module is usually connected to the communication system for converting the received optical signal into an electrical signal for transmission to the communication system for processing, or for receiving an electrical signal from the communication system to be converted into an optical signal and then transmitted through the optical fiber.
  • FIG. 2 A schematic diagram of an internal circuit of an optical module in the OLT 101 or the ONU 102 is as shown in FIG. 2, including: a laser 201 and its driving circuit 202, a first resistor 203 and a first low pass filter 204, and a second resistor 205.
  • the laser 201 may specifically be a FP (Fabry-Perot) laser or other laser cost lower than the DFB laser.
  • the laser 201 includes: a light emitting diode 211 and a photodiode 212.
  • the light emitting diode 211 may specifically be
  • the anode of the light emitting diode 211 is connected to the cathode of the photodiode 212.
  • the anode of photodiode 212 is in electrical communication with drive circuit 202.
  • the light-emitting diode 211 is used to perform electro-optical conversion through the bias current received by the cathode and the anode, and emits an optical signal.
  • the photodiode 212 is opposite to the LED 211 for receiving a part of the laser light emitted by the LED 211, and photoelectrically converting the received light to output a backlight current, which is fed back to the driving circuit 202 for the driving circuit 202 to adjust according to the backlight current.
  • the bias current is output to the light emitting diode 211, thereby adjusting the frequency, light intensity, and the like of the light signal emitted from the light emitting diode 211.
  • the first resistor 203 is connected between the driving circuit 202 and the anode of the light emitting diode 211 in the laser 201. That is, the first resistor 203 is also connected between the driving circuit 202 and the cathode of the photodiode 212. Preferably, the resistor 203 is coupled between the bias current output of the driver circuit 202 and the anode of the LED 211 in the laser 201.
  • the first low pass filter 204 is connected in parallel with the first resistor 203 and is connected between the anode of the light emitting diode 2 11 in the laser 201 and the driving circuit 202. That is, the first low pass filter 204 is also connected between the drive circuit 202 and the cathode of the photodiode 212. Preferably, the first low pass filter 204 is coupled between the bias current output of the driver circuit 202 and the anode of the LED 211 in the laser 201.
  • the second resistor 205 is connected between the driving circuit 202 and the cathode of the light emitting diode 211 in the laser 201.
  • the bias current outputted by the driving circuit 202 of the laser 201 is sent to the anode of the light-emitting diode 211 in the laser 201 through the parallel circuit of the resistor 203 and the first low-pass filter 204 for the laser 20 1
  • the LED 211 in the normal operation (ie, illumination).
  • the driving circuit 202 in the optical module never outputs a bias current to a state of outputting a bias current, and the bias current in the process From the beginning, there is a characteristic of alternating current, and the bias current in the process is mainly outputted to the light-emitting diode 211 and the photodiode 212 in the laser 201 through the first resistor 203, so that the laser 201 starts to enter the working state;
  • the bias current is mainly composed of a direct current component, and is transmitted to the light emitting diode 211 and the photodiode 212 in the laser 201 through a parallel circuit of the first resistor 203 and the first low pass filter 204.
  • the bias currents outputted by the driving circuit 202 a part of the bias current is supplied to the anode of the light emitting diode 211 and the cathode of the photodiode 212 in the laser 201 through the first low pass filter 204.
  • the first low pass filter 204 bias current, its AC component is converted into thermal energy dissipation through the first low pass filter 204, corresponding to the AC component of the partial bias current being first low pass.
  • the filter 204 suppresses such that the DC component of the bias current delivered to the anode of the LED 211 in the laser 201 is more stable, thereby making the frequency of the optical signal emitted by the LED 211 in the laser 201 more stable.
  • the optical module of the embodiment of the present invention further includes: a second low-pass filter 206 connected in parallel with the second resistor 205.
  • the second low pass filter 206 is connected between the cathode of the light emitting diode 211 in the optical module and the driving circuit 202.
  • the second low pass filter 206 may further filter the AC component of the bias current flowing through the second low pass filter 206 such that the loop is in the bias current from the cathode of the light emitting diode 211 to the driving circuit 202.
  • the DC component is more stable, so that the frequency of the optical signal emitted by the LED 211 in the laser 201 is more stable.
  • the optical module of the embodiment of the present invention further includes: a third low pass filter 207
  • the third low pass filter 207 is connected between the anode of the photodiode 212 in the laser 201 and the driving circuit 202.
  • the third low-pass filter 207 can suppress or filter the AC component of the backlight current outputted by the photodiode 212, so that the proportion of the DC component in the backlight current increases, and the driving circuit 202 can account for the DC component.
  • a larger backlight current more accurately adjusts the bias current output to the LED 211, so that the laser light intensity emitted by the LED 211 is more accurate and stable.
  • the current passed by the first low pass filter 204 or the second low pass filter 206 is not less than the bias current required for the LED 211 in the laser 201 to operate normally.
  • the first low pass filter 206 allows a current to pass no less than 70 mA (mA).
  • the driving current 202 of the laser 201 has a bias current of not less than 90 mA when its bias current output is unloaded.
  • the targeted selection of the cutoff frequency is lower than the determined
  • the low pass filter of the frequency is used as the first low pass filter 204.
  • the cutoff frequencies of the second low pass filter 206 and the third low pass filter 207 may both be lower than the determined frequency.
  • the cutoff frequency may be selected to be lower than 700 MHz.
  • the low pass filter acts as the first low pass filter 204.
  • a circuit in which a plurality of first low pass filters 204 connected in series are connected in parallel with the first resistor 203 may be employed. It is also possible to employ a circuit in which a plurality of second low-pass filters 206 connected in series are connected in parallel with the second resistor 205. Further, a circuit in which a plurality of third low-pass filters 207 are connected in series between the driving circuit 202 and the anode of the photodiode 212 can also be employed.
  • the amplitude of the AC component in the bias current supplied to the light-emitting diode 211 can be made 40 dB (decibel) or more lower than the amplitude of the DC component. Therefore, it can be considered that the AC component in the bias current has no influence on the frequency at which the light-emitting diode 211 outputs the optical signal.
  • the schematic diagram of the internal circuit of the first low-pass filter 204 is as shown in FIG. 3, and includes: a first inductor
  • a first capacitor 302 and a second capacitor 303 are connected to A first capacitor 302 and a second capacitor 303.
  • the first inductor 301 and the first capacitor 302 are both connected in parallel with the first resistor 203, and are connected between the anode of the LED 211 and the driving circuit 202.
  • the second capacitor 303 has one end connected between the first capacitor 301 and the driving circuit 202, and the other end of which is grounded.
  • the parameters of the first inductor 301, the first capacitor 302, and the second capacitor 303 are appropriately adjusted, so that the DC impedance of the first low-pass filter 204 is smaller than the impedance of the first resistor 203. Therefore, according to the characteristics of the parallel circuit, most of the bias current outputted by the driving circuit 202 is supplied to the anode of the light emitting diode 211 in the laser 201 through the first low pass filter 204, so that most of the AC component in the bias current is The low-pass filter suppresses or filters out, so that the proportion of the direct current component in the bias current is greater than the proportion of the alternating current component, and even several times the proportion of the alternating current component, the light-emitting diode 211 can account for a much larger proportion of the direct current component than the alternating current component.
  • the bias current output is more stable than the optical signal. For example, when the impedance of the resistor 203 is about 20 ⁇ , the DC impedance of the first low-pass filter 204
  • the schematic diagram of the internal circuit of the second low-pass filter 206 is as shown in FIG. 4, and includes: a second inductor 401, a third capacitor 402, and a fourth capacitor 403.
  • the second inductor 401 and the third capacitor 402 are both connected in parallel with the second resistor 205, and are connected between the anode of the LED 211 and the driving circuit 202.
  • One end of the fourth capacitor 403 is connected between the third capacitor 402 and the driving circuit 202, and the other end is grounded.
  • the parameters of the second inductor 401, the third capacitor 402, and the fourth capacitor 403 are appropriately adjusted, so that the DC impedance of the second low-pass filter 206 is smaller than the impedance of the second resistor 205. Thereafter, most of the bias current in the bias power loop from the cathode of the LED 211 to the driver circuit 202 will flow through the second low pass filter 206, which may further suppress or filter the bias.
  • the AC component in the current further increases the proportion of the DC component in the bias current, which is beneficial to the output of the LED 211 A more stable optical signal.
  • the schematic diagram of the internal circuit of the third low-pass filter 207 is as shown in FIG. 5, and includes: a third inductor 501, a fifth capacitor 502, and a sixth capacitor 503.
  • the third inductor 501 and the fifth capacitor 502 are connected in parallel, and are connected between the anode of the photodiode 212 in the laser 201 and the driving circuit 202.
  • One end of the sixth capacitor 503 is connected between the fifth capacitor 502 and the driving circuit 202, and the other end is grounded.
  • the parameters of the inductance and the capacitance in at least one of the first low pass filter 204, the second low pass filter 206, and the third low pass filter 207 are appropriately adjusted, and the driving can be adjusted.
  • the frequency response characteristic of the circuit 202 and the bias current loop before the laser 201 assists in optimizing the impedance matching of the peripheral circuit of the BOSA (Bi-Directional Optical Sub-Assembly) where the laser 201 or the laser 201 is located.
  • lasers in different optical modules may need to suppress or filter out AC components of different frequencies in the bias current to stably output optical signals of different frequencies.
  • the low pass filter may be appropriately adjusted.
  • the parameters of the inductor and capacitor are used to adjust the cutoff frequency of the low pass filter to suppress or filter the AC components of different frequencies in the bias current to accommodate the optical signals of the laser output at different frequencies. That is to say, the technical solution of the embodiment of the present invention can be applied to an optical module that requires outputting optical signals of different frequencies.
  • the ONU and its optical module in the embodiments of the present invention can be applied to GP0N, and can also be applied to EPON (Ethernet Passive Optical Network), XGP0N1, and XGP0N2. Or in passive optical networks such as NG-P0N2 (Next Generation-Passive Optical Network stage 2).
  • X in XGP0N1 is a number, for example, 10, and thus XGP0N1 is specifically 10GPON1.
  • the first low pass filter in the optical module is disposed between the driving circuit of the laser and the anode of the LED in the laser, and is connected in parallel with the first resistor to reduce the load of the driving circuit. , the bias current outputted by the driving circuit is increased, so that the laser can work normally. Also, the first low pass filter suppresses the AC component in the bias current such that the frequency of the optical signal emitted by the laser is more stable.
  • the cost of the laser in the embodiment of the present invention is much lower than that of the DFB laser, and the price of the first low-pass filter is much smaller than the difference between the expensive DFB laser and the laser of the embodiment of the present invention, and thus the present invention
  • the cost of the optical module of the embodiment is much lower than the cost of the optical module using the DFB laser, and the cost of the ONU and the OLT of the optical module using the embodiment of the present invention can be reduced, thereby reducing the cost of deploying the PON on a large scale.
  • a second low-pass filter is further disposed in the optical module in the embodiment of the present invention, which can further suppress or filter the AC component in the bias current; the third low-pass filter disposed in the optical module , can suppress or filter the AC component in the backlight current, and help the driving circuit to adjust the output to a more stable and accurate bias current according to the backlight current.
  • adjusting the parameters of the inductor and the capacitor in the low-pass filter in the embodiment of the present invention can adjust the frequency response characteristic of the bias current loop, and assist in optimizing the impedance matching of the laser peripheral circuit;
  • the cutoff frequency of the filter is adapted to the optical module that requires the output of optical signals of different frequencies.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Semiconductor Lasers (AREA)
  • Optical Communication System (AREA)

Abstract

L'invention concerne une unité de réseau optique d'un réseau optique passif et un module optique de celle-ci. Le module optique comprend : un laser et un circuit d'actionnement de celui-ci, et des première et seconde résistances. La première résistance est connectée entre l'anode d'une diode électroluminescente dans le laser et le circuit d'actionnement, et la seconde résistance est connectée entre la cathode de la diode électroluminescente et le circuit d'actionnement. Le module optique comprend en outre : un premier filtre passe-bas connecté à la première résistance en parallèle, et connecté entre l'anode de la diode électroluminescente et le circuit d'actionnement. Dans les modes de réalisation de la présente invention, un courant de polarisation émis par le circuit d'actionnement peut permettre au laser de fonctionner normalement, et le premier filtre passe-bas inhibe la composante de courant alternatif dans le courant de polarisation, de sorte que la fréquence du signal optique émis par le laser est plus stable. De plus, les coûts du laser dans les modes de réalisation de la présente invention sont nettement inférieurs à ceux d'un laser DFB, et par conséquent, les coûts du module optique dans les modes de réalisation de la présente invention sont nettement inférieurs à ceux du module optique utilisant le laser DFB.
PCT/CN2016/074049 2015-09-15 2016-02-18 Unité de réseau optique de réseau optique passif et module optique de celle-ci WO2017045360A1 (fr)

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CN201510585899.2 2015-09-15
CN201510585899.2A CN106535010A (zh) 2015-09-15 2015-09-15 无源光网络的光网络单元及其光模块

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Publication number Priority date Publication date Assignee Title
WO2018137155A1 (fr) 2017-01-24 2018-08-02 华为技术有限公司 Récepteur optique
CN109417272B (zh) * 2018-09-20 2020-10-09 索尔思光电（成都）有限公司 用于光发射器的抗阻匹配电路及其制造和使用方法
CN114938243B (zh) * 2022-07-22 2023-04-25 深圳市亿联无限科技有限公司 调试bosa的方法、***、调试仪及调试方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1993908A (zh) * 2004-06-01 2007-07-04 波科海姆技术公共有限公司 光电子模块中用于激光调制交点调节的控制电路
JP4228106B2 (ja) * 2006-08-25 2009-02-25 Ｔｄｋ株式会社 光ピックアップ用高周波重畳モジュール
CN102386979A (zh) * 2011-10-26 2012-03-21 常熟市高事达光电科技有限公司 有线电视双向网络改造的光接收机上行激光器控制电路
CN104078841A (zh) * 2014-07-08 2014-10-01 成都新易盛通信技术股份有限公司 一种光模块激光器数字开环温度补偿***

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04343491A (ja) * 1991-05-21 1992-11-30 Nec Corp 光送信回路
JP2005317666A (ja) * 2004-04-27 2005-11-10 Sumitomo Electric Ind Ltd レーザ駆動回路
US8831059B2 (en) * 2011-02-07 2014-09-09 Mitsubishi Electric Corporation Laser diode driver circuit
WO2013086674A1 (fr) * 2011-12-12 2013-06-20 华为技术有限公司 Circuit de modulation du signal d'essai d'un réflectomètre optique temporel, ainsi que système et dispositif à réseau optique passif
CN104796800B (zh) * 2011-12-31 2018-06-08 青岛海信宽带多媒体技术有限公司 光模块及具有该光模块的无源光网络

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1993908A (zh) * 2004-06-01 2007-07-04 波科海姆技术公共有限公司 光电子模块中用于激光调制交点调节的控制电路
JP4228106B2 (ja) * 2006-08-25 2009-02-25 Ｔｄｋ株式会社 光ピックアップ用高周波重畳モジュール
CN102386979A (zh) * 2011-10-26 2012-03-21 常熟市高事达光电科技有限公司 有线电视双向网络改造的光接收机上行激光器控制电路
CN104078841A (zh) * 2014-07-08 2014-10-01 成都新易盛通信技术股份有限公司 一种光模块激光器数字开环温度补偿***

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