WO2023197974A1 - 一种光接收机 - Google Patents
一种光接收机 Download PDFInfo
- Publication number
- WO2023197974A1 WO2023197974A1 PCT/CN2023/087169 CN2023087169W WO2023197974A1 WO 2023197974 A1 WO2023197974 A1 WO 2023197974A1 CN 2023087169 W CN2023087169 W CN 2023087169W WO 2023197974 A1 WO2023197974 A1 WO 2023197974A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical receiver
- coupled
- automatic gain
- signal
- output end
- 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.)
- Ceased
Links
Classifications
-
- 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
-
- 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
- H04B10/6931—Automatic gain control of the preamplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
- H03F1/565—Modifications of input or output impedances, not otherwise provided for using inductive elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
- H03F3/08—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only controlled by light
- H03F3/087—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only controlled by light with IC amplifier blocks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3084—Automatic control in amplifiers having semiconductor devices in receivers or transmitters for electromagnetic waves other than radiowaves, e.g. lightwaves
-
- 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
- H04B10/691—Arrangements for optimizing the photodetector in the receiver
- H04B10/6911—Photodiode bias control, e.g. for compensating temperature variations
Definitions
- a field effect transistor is coupled in parallel at the inductor included in the optical receiver; and the gate of the field effect transistor can receive different output voltage signals by receiving the output voltage signal of the automatic gain controller. have different current conduction capabilities. Therefore, the optical receiver provided by this application can realize that when the input signal received by the inductor increases, as the output voltage of the automatic gain controller changes, the gate voltage of the field effect transistor changes, and then the gate voltage reaches a certain level.
- the signal threshold causes a bypass short-circuit effect of the field effect transistor; in other words, the drain-source resistance of the field effect transistor can be reduced. In this way, the field effect transistor reduces the The drain-source resistance of the field effect transistor can alleviate problems such as signal cracking that may exist in the optical receiver, and reduce or avoid ringing/oscillation that may occur during signal transmission.
- the field effect transistor can realize the transformation of current conduction capability. Therefore, the signal peak in the optical receiver can be automatically adjusted to avoid excessive peaks due to the resonance of the inductor, thereby ensuring the receiving performance of the optical receiver.
- the input terminals of the different automatic gain controllers are respectively coupled to different output terminals of the same control subunit. Node location.
- different automatic gain controllers can take different voltages from different nodes in the signal path after the control subunit that needs to be controlled, in order to achieve more accurate peak regulation of the control subunit based on the signal characteristics of different nodes.
- optical communication equipment in the above second aspect includes the optical receiver of each design in the above first aspect, it also has the technical effects that can be brought by each design in the above first aspect, which will not be repeated here.
- photodetectors such as photodiodes lack a multiplication layer, so the current signal output after photoelectric conversion of the optical signal is smaller.
- the optical receiver In scenarios where the current after photoelectric conversion output by the photodetector is small, if the optical receiver is required, it can still achieve better reception performance (for example, the voltage signal output by the optical receiver usually needs to reach a fixed range), in the optical receiver The included transimpedance amplifier is usually required to compensate for the greater gain. At this time, when the input signal from the photodetector is large, there may be excessive signal peaks due to excessive compensation, resulting in a significant reduction in the performance of the optical receiver.
- Photodetector used to receive optical signals and convert the optical signals into electrical signals; for example, the photodetector can be a photodiode (PD) in Figure 2.
- the photodetector can be a photodiode (PD) in Figure 2.
- Vpd a bias voltage to the photodiode
- Vth the threshold voltage of the photodiode's normal operation
- the transimpedance amplification unit in the transimpedance amplifier needs to provide a larger transimpedance gain, which may cause As a result, the bandwidth of the resulting voltage signal transmission is reduced, and the bandwidth of the electrical signal can be increased through the inductor.
- the input end of the first branch can receive the output signal from the photodiode 310.
- the output end of the first branch can be coupled to the output end of the optical receiver 300; optionally, the output end of the first branch can be directly coupled to the output end of the optical receiver 300; the other can be
- the output end of the first branch may also be indirectly coupled to the output end of the optical receiver 300 through the next-stage unit 330 or one or more other components.
- the electrical signal in the signal path is gradually transmitted from the field effect transistor 3221b to gradually returning to being transmitted through the inductor 3221a. It can be understood that in the process of the electrical signal gradually changing the transmission path, the electrical signal can be transmitted in parallel through the branch where the inductor 3221a is located and the branch where the field effect transistor 3221b is located.
- the automatic gain controller may also include an inverter, through which the transmission effect required by the optical receiver of the present application can be achieved.
- inverter For specific implementation methods, please refer to the implementation process of an N-channel field effect transistor, which will not be discussed here. Again.
- the control unit 322 may also include multiple inductors.
- Figure 5a is an example diagram of another optical receiver 300 provided by the embodiment of the present application.
- the input end of the transresistance amplification unit 321 can receive the electrical signal from the photodiode 310 , and the electrical signal can be gain amplified in the transresistance amplification unit 321 .
- the input end of the cascade branch of the inductors 3222a1 ⁇ 3222ax can receive the gain-amplified electrical signal from the transimpedance amplification unit 321 to achieve a multi-level increase in bandwidth.
- control unit 322 may also include multiple inductors, and the multiple inductors may be divided into at least one sub-branch, each sub-branch. Field effect transistors can be connected in parallel in the branches.
- Figure 6a is an example diagram of another optical receiver 300 provided by the embodiment of the present application.
- the input end of the transresistance amplification unit 321 can receive the electrical signal from the photodiode 310 , and the electrical signal can be gain amplified in the transresistance amplification unit 321 .
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Optical Communication System (AREA)
Abstract
Description
Iin=P*M*R 公式2
Claims (14)
- 一种光接收机,其特征在于,包括:光电二极管、跨阻放大单元、控制单元、一个或多个自动增益控制器;所述控制单元包括一个或多个控制子单元;所述控制子单元包括:一个或多个电感、与所述一个或多个电感并联耦合的场效应晶体管;所述跨阻放大单元与所述控制单元串联耦合为第一支路;所述第一支路的输入端接收来自所述光电二极管的输出信号;各所述自动增益控制器的输入端耦合至对应的控制子单元的输出端,各所述自动增益控制器的输出端耦合至所述对应的控制子单元包含的所述场效应晶体管的栅极;其中,所述自动增益控制器,用于为所述场效应晶体管的栅极输出电压信号;所述输出电压信号用于改变所述场效应晶体管的电流导通能力。
- 根据权利要求1所述的光接收机,其特征在于,所述第一支路的输入端接收来自所述光电二极管的输出信号,所述第一支路的输出端耦合至所述光接收机的输出端;包括:所述跨阻放大单元的输入端接收来自所述光电二极管的输出信号,向所述控制单元传输信号;所述控制单元的输出端耦合至所述光接收机的输出端;或者,所述控制单元的输入端接收来自所述光电二极管的输出信号,向所述跨阻放大单元传输信号;所述跨阻放大单元的输出端耦合至所述光接收机的输出端。
- 根据权利要求2所述的光接收机,其特征在于,所述自动增益控制器的输入端耦合至对应的控制子单元的输出端,包括:若所述跨阻放大单元的输入端接收来自所述光电二极管的输出信号,所述自动增益控制器的输入端耦合至所述对应的控制子单元的输出端;若所述控制单元的输入端接收来自所述光电二极管的输出信号,所述自动增益控制器的输入端耦合至所述对应的控制子单元的输出端;或者,所述自动增益控制器的输入端通过所述跨阻放大单元,耦合至所述对应的控制子单元的输出端。
- 根据权利要求1或2所述的光接收机,其特征在于,所述光接收机还包括第二支路;所述第二支路包括以下器件中的一种或组合:一个或多个放大单元、一个或多个缓冲单元;所述第一支路的输出端耦合至所述光接收机的输出端,包括:所述第一支路的输出端通过所述第二支路,耦合至所述光接收机的输出端;所述自动增益控制器的输入端耦合至对应的控制子单元的输出端,包括:所述自动增益控制器的输入端通过所述第二支路中包括的放大单元或缓冲单元中的一个或多个,耦合至所述对应的控制子单元的输出端。
- 根据权利要求4所述的光接收机,其特征在于,若所述控制单元包括第一控制子单元;所述第一控制子单元包括的一个或多个电感耦合在所述光电二极管的输出端与所述光接收机的输出端之间的传输链路中;或者,所述第一控制子单元包括的一个或多个电感耦合在任一所述放大单元、或任一所述缓 冲单元内部。
- 根据权利要求1至5中任一所述的光接收机,其特征在于,若所述场效应晶体管为基于N沟道的场效应晶体管,所述基于N沟道的场效应晶体管的电流导通能力与所述自动增益控制器的输出电压信号负相关;若所述场效应晶体管为基于P沟道的场效应晶体管、所述自动增益控制器还包括反相器,所述基于P沟道的场效应晶体管的电流导通能力与所述自动增益控制器的输出电压信号正相关。
- 根据权利要求1至6中任一所述的光接收机,其特征在于,所述自动增益控制器接收来自所述对应的控制子单元的输出端之后的任一节点的单端信号或者差分信号。
- 根据权利要求1至4中任一所述的光接收机,其特征在于,若所述控制单元包括多个控制子单元;第一控制子单元包括的电感数量和第二控制子单元包括的电感数量相同或者不同;其中,所述第一控制子单元、所述第二控制子单元为所述多个控制子单元中的任意两个。
- 根据权利要求1至8中任一所述的光接收机,其特征在于,不同的自动增益控制器对应不同的控制子单元;或者不同的自动增益控制器对应相同的控制子单元。
- 根据权利要求9所述的光接收机,其特征在于,若存在不同的自动增益控制器对应相同的控制子单元,所述不同的自动增益控制器的输入端分别耦合至所述相同的控制子单元的输出端之后的不同节点位置。
- 根据权利要求1至10中任一所述的光接收机,其特征在于,至少一个所述自动增益控制器的输出端还耦合至所述跨阻放大单元的输入端;其中,所述自动增益控制器,还用于对所述跨阻放大单元进行跨阻增益的调节。
- 根据权利要求1至11中任一所述的光接收机,其特征在于,所述多个控制子单元串联耦合。
- 根据权利要求1至12中任一所述的光接收机,其特征在于,所述第一支路的输出端耦合至所述光接收机的输出端。
- 一种光通信设备,其特征在于,包括:如权利要求1至13中任一项所述的光接收机、一个或多个处理器;其中,所述一个或多个处理器用于接收来自所述光接收机传输的数据报文并处理。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23787618.0A EP4472108A4 (en) | 2022-04-15 | 2023-04-08 | OPTICAL RECEIVER |
| MX2024012716A MX2024012716A (es) | 2022-04-15 | 2024-10-14 | Receptor optico |
| US18/916,560 US20250038861A1 (en) | 2022-04-15 | 2024-10-15 | Optical receiver |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210399439.0 | 2022-04-15 | ||
| CN202210399439.0A CN116961777A (zh) | 2022-04-15 | 2022-04-15 | 一种光接收机 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18/916,560 Continuation US20250038861A1 (en) | 2022-04-15 | 2024-10-15 | Optical receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023197974A1 true WO2023197974A1 (zh) | 2023-10-19 |
Family
ID=88328990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2023/087169 Ceased WO2023197974A1 (zh) | 2022-04-15 | 2023-04-08 | 一种光接收机 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250038861A1 (zh) |
| EP (1) | EP4472108A4 (zh) |
| CN (1) | CN116961777A (zh) |
| MX (1) | MX2024012716A (zh) |
| WO (1) | WO2023197974A1 (zh) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5012202A (en) * | 1990-03-15 | 1991-04-30 | Triquint Semiconductor, Inc. | Low impedance automatic gain control circuit |
| CN102833006A (zh) * | 2012-09-10 | 2012-12-19 | 电子科技大学 | 光接收机 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9774305B1 (en) * | 2016-08-02 | 2017-09-26 | Inphi Corporation | Transimpedance amplifier with variable inductance input reducing peak variation over gain |
| JP2020077956A (ja) * | 2018-11-07 | 2020-05-21 | 住友電気工業株式会社 | 光受信回路 |
| JP7419770B2 (ja) * | 2019-11-29 | 2024-01-23 | 住友電気工業株式会社 | 光受信用回路および光受信器 |
-
2022
- 2022-04-15 CN CN202210399439.0A patent/CN116961777A/zh active Pending
-
2023
- 2023-04-08 EP EP23787618.0A patent/EP4472108A4/en active Pending
- 2023-04-08 WO PCT/CN2023/087169 patent/WO2023197974A1/zh not_active Ceased
-
2024
- 2024-10-14 MX MX2024012716A patent/MX2024012716A/es unknown
- 2024-10-15 US US18/916,560 patent/US20250038861A1/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5012202A (en) * | 1990-03-15 | 1991-04-30 | Triquint Semiconductor, Inc. | Low impedance automatic gain control circuit |
| CN102833006A (zh) * | 2012-09-10 | 2012-12-19 | 电子科技大学 | 光接收机 |
Non-Patent Citations (3)
| Title |
|---|
| RUE J., ET AL.: "HIGH PERFORMANCE 10 GB/S PIN AND APD OPTICAL RECEIVERS.", 1999 PROCEEDINGS 49TH. ELECTRONIC COMPONENTS AND TECHNOLOGY CONFERENCE. ECTC 1999. SAN DIEGO, CA, JUNE 1 - 4, 1999., NEW YORK, NY : IEEE., US, 1 June 1999 (1999-06-01), US , pages 207 - 215, XP000903795, ISBN: 978-0-7803-5232-2 * |
| See also references of EP4472108A4 |
| WANG LI-FANG, ZHOU HUA, FENG WEI, JIANG XIANG : "The design of CMOS Optical Receiver Preamplifier with AGC", GUANGTONGXIN-YANJIU = STUDY ON OPTICAL COMMUNICATIONS, WUHAN, no. 6, 31 December 2005 (2005-12-31), pages 53 - 56, XP009549601, ISSN: 1005-8788, DOI: 10.13756/j.gtxyj.2005.06.017 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116961777A (zh) | 2023-10-27 |
| EP4472108A1 (en) | 2024-12-04 |
| MX2024012716A (es) | 2024-11-08 |
| EP4472108A4 (en) | 2025-04-30 |
| US20250038861A1 (en) | 2025-01-30 |
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