TWI732322B - Aoc and aec hybrid system and optical transceiver system thereof - Google Patents

Aoc and aec hybrid system and optical transceiver system thereof Download PDF

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TWI732322B
TWI732322B TW108137956A TW108137956A TWI732322B TW I732322 B TWI732322 B TW I732322B TW 108137956 A TW108137956 A TW 108137956A TW 108137956 A TW108137956 A TW 108137956A TW I732322 B TWI732322 B TW I732322B
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pam4
unit
signal
conversion device
coupled
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TW108137956A
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TW202114364A (en
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政 李
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政 李
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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
    • H04B10/25—Arrangements specific to fibre transmission
    • 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
    • H04B10/50—Transmitters
    • H04B10/516—Details of coding or modulation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/04—Mode multiplex systems

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)

Abstract

An optical transceiver system provided including a PAM4 converting device, a light emitting device, a light receiving device and an interface unit. The light emitting device is coupled to the PAM4 converting device and receives a first PAM4 signal from the PAM4 converting device. The light receiving device is coupled to the PAM4 converting device and transmits a second PAM4 signal to the PAM4 converting device. The interface unit is coupled to the PAM4 converting device through a cable unit and transmits a first NRZ signal to the PAM4 converting device. The first NRZ signal is converted into the first PAM4 signal by the PAM4 converting device, and the second PAM4 signal is converted into a second NRZ signal by the PAM4 converting device, and the second NRZ signal is transmitted to the interface unit.

Description

主動式光纜與主動式電纜的複合系統與其光收發系統 Composite system of active optical cable and active cable and its optical transceiver system

本發明是關於進行高速資料傳輸的收發系統，尤其是主動式光纜與主動式電纜的複合系統與其光收發系統。 The invention relates to a transceiving system for high-speed data transmission, in particular to a composite system of active optical cable and active cable and its optical transceiving system.

高速的資料傳輸中，NRZ的調變普遍被應用，且高密度分波多工系統(Dense Wavelength Division Multiplexing System)與平面光波導(Planar Lightwave Circuit,PLC)技術常被用於高速模組與低速模組之間的速率轉換，實現高速轉低速的扇出纜線(fan-out cable)配置。 In high-speed data transmission, NRZ modulation is commonly used, and high-density wavelength division multiplexing system (Dense Wavelength Division Multiplexing System) and planar lightwave circuit (PLC) technologies are often used in high-speed modules and low-speed modules. The rate conversion between groups realizes the fan-out cable configuration of high-speed to low-speed.

PAM4調變使得系統的傳輸資料量增加，但在高速轉低速的狀況下會產生不同調變方式的通訊問題，且無法透過高密度分波多工系統與平面光波導技術來解決。 PAM4 modulation increases the amount of data transmitted by the system, but communication problems with different modulation methods will occur under the condition of high-speed to low-speed, and cannot be solved by high-density division-wave multiplexing systems and planar optical waveguide technology.

另外，也需使用PAM4光電轉換以進行PAM4與NRZ轉換，然後再做NRZ光電轉換，但這樣的作法在電源供應上需要增加光電轉換元件，使得所需功率與元件成本增加。 In addition, PAM4 photoelectric conversion is also needed to perform PAM4 and NRZ conversion, and then NRZ photoelectric conversion. However, this method requires additional photoelectric conversion elements in the power supply, which increases the required power and the cost of the elements.

因此，需要提出一種能達到上述通訊需求且降低成本與功耗的調變轉換方法。 Therefore, it is necessary to provide a modulation conversion method that can meet the above-mentioned communication requirements and reduce cost and power consumption.

本發明的主動式光纜與主動式電纜複合系統能在不同調變通訊情況下達到低成本與低功耗的效果。 The active optical cable and active cable composite system of the present invention can achieve the effects of low cost and low power consumption under different modulation communication conditions.

依據本發明一實施例，提出了一種光收發系統，包括一PAM4轉換裝置、光發射裝置、光接收裝置與介面單元。光發射裝置耦接該PAM4轉換裝 置並從該PAM4轉換裝置接收一第一PAM4信號。光接收裝置耦接該PAM4轉換裝置並傳輸一第二PAM4信號至該PAM4轉換裝置。介面單元通過一電纜單元耦接該PAM4轉換裝置並傳輸一第一NRZ信號至該PAM4轉換裝置。該第一NRZ信號由該PAM4轉換裝置轉換為該第一PAM4信號，且該第二PAM4信號由該PAM4轉換裝置轉換為一第二NRZ信號，該第二NRZ信號被傳輸至該介面單元。 According to an embodiment of the present invention, an optical transceiver system is provided, which includes a PAM4 conversion device, a light emitting device, a light receiving device, and an interface unit. The light emitting device is coupled to the PAM4 conversion device And receive a first PAM4 signal from the PAM4 conversion device. The light receiving device is coupled to the PAM4 conversion device and transmits a second PAM4 signal to the PAM4 conversion device. The interface unit is coupled to the PAM4 conversion device through a cable unit and transmits a first NRZ signal to the PAM4 conversion device. The first NRZ signal is converted by the PAM4 conversion device into the first PAM4 signal, and the second PAM4 signal is converted by the PAM4 conversion device into a second NRZ signal, and the second NRZ signal is transmitted to the interface unit.

依據本發明一實施例，提出了一種具有主動式光纜與主動式電纜的複合系統，包括一主動式光纜裝置、一PAM4轉換裝置、光發射裝置、光接收裝置與介面單元。光發射裝置耦接該PAM4轉換裝置並從該PAM4轉換裝置接收一第一PAM4信號。光接收裝置耦接該PAM4轉換裝置並傳輸一第二PAM4信號至該PAM4轉換裝置。介面單元通過一主動式電纜裝置耦接該PAM4轉換裝置並傳輸一第一NRZ信號至該PAM4轉換裝置。該第一NRZ信號由該PAM4轉換裝置轉換為該第一PAM4信號，且該第二PAM4信號由該PAM4轉換裝置轉換為一第二NRZ信號，該第二NRZ信號被傳輸至該介面單元。 According to an embodiment of the present invention, a composite system with an active optical cable and an active cable is proposed, which includes an active optical cable device, a PAM4 conversion device, a light emitting device, a light receiving device, and an interface unit. The light emitting device is coupled to the PAM4 conversion device and receives a first PAM4 signal from the PAM4 conversion device. The light receiving device is coupled to the PAM4 conversion device and transmits a second PAM4 signal to the PAM4 conversion device. The interface unit is coupled to the PAM4 conversion device through an active cable device and transmits a first NRZ signal to the PAM4 conversion device. The first NRZ signal is converted by the PAM4 conversion device into the first PAM4 signal, and the second PAM4 signal is converted by the PAM4 conversion device into a second NRZ signal, and the second NRZ signal is transmitted to the interface unit.

本發明提出的具有主動式光纜與主動式電纜的複合系統與其光收發系統能達到上述通訊需求，而不需使用一般PAM4與NRZ轉換前後所需要的光電轉換，免除光電轉換元件，達到降低所需功率與元件成本的效果。 The composite system with active optical cable and active cable and its optical transceiver system proposed by the present invention can meet the above-mentioned communication requirements without using the photoelectric conversion required before and after conversion of general PAM4 and NRZ, eliminating photoelectric conversion elements, and achieving reduced requirements The effect of power and component cost.

所屬技術領域中具有通常知識者將理解，可以透過本發明所公開實現的效果不限於上文具體描述的內容，並且從以上結合附圖的詳細描述中將更清楚地理解本發明的優點。 Those with ordinary knowledge in the technical field will understand that the effects that can be achieved through the disclosure of the present invention are not limited to the content described above, and the advantages of the present invention will be more clearly understood from the above detailed description in conjunction with the accompanying drawings.

2:主動式光纜裝置 2: Active optical cable device

2:光收發模組 2: Optical transceiver module

11:介面單元 11: Interface unit

12:PAM4轉換裝置 12: PAM4 conversion device

13:光發射裝置 13: Light emitting device

14:光接收裝置14 14: Light receiving device 14

20:主動式電纜裝置 20: Active cable device

100:主動式光纜傳輸單元 100: Active optical cable transmission unit

101:主動式光纜接收單元 101: Active optical cable receiving unit

110:主機接收埠 110: Host receiving port

111:主機發送埠 111: Host sending port

121:PAM4編碼單元 121: PAM4 coding unit

122:PAM4解碼單元 122: PAM4 decoding unit

130:光纖單元 130: Optical fiber unit

131:透鏡單元 131: lens unit

132:VCSEL單元 132: VCSEL unit

133:雷射驅動器 133: Laser driver

140:接腳二極體 140: pin diode

141:轉阻放大器 141: transimpedance amplifier

圖1是根據本發明一實施例的系統的示意圖。 Fig. 1 is a schematic diagram of a system according to an embodiment of the present invention.

圖2是根據本發明一實施例的系統方塊圖。 Fig. 2 is a block diagram of a system according to an embodiment of the present invention.

請參照圖1，圖1是根據本發明一實施例的系統的示意圖，如圖1所示，伺服器之間使用了主動式光纜裝置1與主動式電纜裝置20進行資料傳輸，且透過PAM4轉換裝置12進行PAM4與NRZ的調變轉換，PAM4調變模式可以使模組的結構更簡單，有助達到節省電路成本效果。 Please refer to FIG. 1. FIG. 1 is a schematic diagram of a system according to an embodiment of the present invention. As shown in FIG. 1, an active optical cable device 1 and an active cable device 20 are used for data transmission between the servers and converted through PAM4 The device 12 performs the modulation conversion between PAM4 and NRZ, and the PAM4 modulation mode can make the structure of the module simpler and help save the circuit cost.

請參照圖2，圖2是根據本發明一實施例的系統方塊圖，圖2中的主動式光纜與主動式電纜的複合系統包括了主動式光纜裝置1與光收發模組2，光收發模組2包括介面單元11、PAM4轉換裝置12、光發射裝置13以及光接收裝置14。 Please refer to FIG. 2, which is a system block diagram according to an embodiment of the present invention. The composite system of active optical cable and active cable in FIG. 2 includes an active optical cable device 1 and an optical transceiver module 2, and an optical transceiver module Group 2 includes an interface unit 11, a PAM4 conversion device 12, a light emitting device 13, and a light receiving device 14.

該介面單元11通過該主動式電纜裝置20耦接該PAM4轉換裝置12並傳輸一第一NRZ信號NRZ1至該PAM4轉換裝置12。 The interface unit 11 is coupled to the PAM4 conversion device 12 through the active cable device 20 and transmits a first NRZ signal NRZ1 to the PAM4 conversion device 12.

該PAM4轉換裝置12耦接光發射裝置13和光接收裝置14，並將該第一NRZ信號NRZ1轉換成第一PAM4信號PAM_1，並將第一PAM4信號PAM_1傳輸至該光發射裝置13，讓該光發射裝置13以雷射信號型式發射該第一PAM4信號PAM_1。 The PAM4 conversion device 12 is coupled to the light emitting device 13 and the light receiving device 14, and converts the first NRZ signal NRZ1 into a first PAM4 signal PAM_1, and transmits the first PAM4 signal PAM_1 to the light emitting device 13, so that the light The transmitting device 13 transmits the first PAM4 signal PAM_1 in the form of a laser signal.

該PAM4轉換裝置12從光接收裝置14接收第二PAM4信號PAM_2，將該第二PAM4信號PAM_2轉換成第二NRZ信號NRZ_2，並將第二NRZ信號NRZ_2傳輸給該介面單元11。 The PAM4 conversion device 12 receives the second PAM4 signal PAM_2 from the light receiving device 14, converts the second PAM4 signal PAM_2 into a second NRZ signal NRZ_2, and transmits the second NRZ signal NRZ_2 to the interface unit 11.

在此實施例中，該主動式光纜裝置1包括耦接該光接收裝置14的一主動式光纜傳輸單元100和耦接該光發射裝置13的一主動式光纜接收單元101。該PAM4轉換裝置12包括PAM4編碼單元121和PAM4解碼單元122，該介面單元11包括主機接收埠110和主機發送埠111，PAM4編碼單元121連接該主機接收埠110以接收第一NRZ信號NRZ1，並轉換為該第一PAM4信號PAM_1以輸出至該光發射裝置13。 In this embodiment, the active optical cable device 1 includes an active optical cable transmission unit 100 coupled to the optical receiving device 14 and an active optical cable receiving unit 101 coupled to the optical transmitting device 13. The PAM4 conversion device 12 includes a PAM4 encoding unit 121 and a PAM4 decoding unit 122. The interface unit 11 includes a host receiving port 110 and a host sending port 111. The PAM4 encoding unit 121 is connected to the host receiving port 110 to receive the first NRZ signal NRZ1, and Converted into the first PAM4 signal PAM_1 to be output to the light emitting device 13.

PAM4解碼單元122將所接收的第二PAM4信號PAM_2解碼為第二NRZ信號NRZ2，並由主機發送埠111輸出。 The PAM4 decoding unit 122 decodes the received second PAM4 signal PAM_2 into a second NRZ signal NRZ2, which is output by the host transmission port 111.

上述實施例中的該PAM4編碼單元121具體可由CAUI接收單元、時脈資料恢復電路、信號多工器、前向糾錯編碼單元和PAM4編碼器組成。該CAUI接收單元獲取主機接收埠110的第一NRZ信號NRZ1。時脈資料恢復電路可對該第一NRZ信號NRZ1進行時脈資料的恢復，再由信號多工器與前向糾錯編碼單元處理後，傳給PAM4編碼器轉換為第一PAM4信號PAM_1。 The PAM4 encoding unit 121 in the foregoing embodiment may specifically be composed of a CAUI receiving unit, a clock data recovery circuit, a signal multiplexer, a forward error correction encoding unit, and a PAM4 encoder. The CAUI receiving unit obtains the first NRZ signal NRZ1 of the receiving port 110 of the host. The clock data recovery circuit can recover the clock data of the first NRZ signal NRZ1, which is processed by the signal multiplexer and the forward error correction coding unit, and then sent to the PAM4 encoder to be converted into the first PAM4 signal PAM_1.

上述實施例中的該PAM4解碼單元122具體可由模數轉換器、數位信號處理單元、信號解多工器、前向糾錯解碼單元和CAUI發射單元組成。模數轉換器接收光接收裝置14傳輸的第二PAM4信號PAM_2，並轉換為數位信號給 該數位信號處理單元進行轉換，再由該信號解多工器與前向糾錯解碼單元進行糾錯解碼處理，再通過CAUI發射單元傳輸到主機發送埠111。 The PAM4 decoding unit 122 in the foregoing embodiment may specifically be composed of an analog-to-digital converter, a digital signal processing unit, a signal demultiplexer, a forward error correction decoding unit, and a CAUI transmitting unit. The analog-to-digital converter receives the second PAM4 signal PAM_2 transmitted by the light receiving device 14, and converts it into a digital signal for The digital signal processing unit performs conversion, and then the signal demultiplexer and the forward error correction decoding unit perform error correction decoding processing, and then transmit to the host sending port 111 through the CAUI transmitting unit.

另外，在此實施例中，該主動式電纜裝置20由銅線組成。該光接收裝置14包括一光纖單元130、一透鏡單元131、一接腳二極體140、以及一轉阻放大器141。該光發射裝置13包括一光纖單元130、一透鏡單元131、一垂直共振腔面射雷射(VCSEL)單元132、以及一雷射驅動器133。 In addition, in this embodiment, the active cable device 20 is composed of copper wire. The light receiving device 14 includes an optical fiber unit 130, a lens unit 131, a pin diode 140, and a transimpedance amplifier 141. The light emitting device 13 includes an optical fiber unit 130, a lens unit 131, a vertical cavity surface shot laser (VCSEL) unit 132, and a laser driver 133.

該雷射驅動器133從PAM4編碼單元121接收對應該第一PAM4信號PAM_1的差分電壓信號並轉換為電流驅動信號驅動VCSEL單元132，VCSEL單元132發射光信號到外部光網路。 The laser driver 133 receives the differential voltage signal corresponding to the first PAM4 signal PAM_1 from the PAM4 encoding unit 121 and converts it into a current drive signal to drive the VCSEL unit 132, and the VCSEL unit 132 transmits the optical signal to the external optical network.

該接腳二極體140用於接收外部光網路傳輸的光信號並轉換為微弱的電流信號傳送給轉阻放大器141。該轉阻放大器141用於將電流信號轉換為對應該第二PAM4信號PAM_2的差分電壓信號傳輸給PAM4解碼單元122。 The pin diode 140 is used to receive the optical signal transmitted by the external optical network and convert it into a weak current signal to be sent to the transimpedance amplifier 141. The transimpedance amplifier 141 is used to convert the current signal into a differential voltage signal corresponding to the second PAM4 signal PAM_2 and transmit it to the PAM4 decoding unit 122.

本發明提出的具有主動式光纜與主動式電纜的複合系統與其光收發系統使用了PAM4調變模式讓光模組的結構更簡單，且主動式電纜的複合使用不需使用一般PAM4與NRZ轉換前後所需要的光電轉換，可免除光電轉換元件，達到通訊需求且能降低所需功率與元件成本。 The composite system with active optical cable and active cable and its optical transceiver system proposed by the present invention use PAM4 modulation mode to make the structure of the optical module simpler, and the composite use of active cables does not require the use of general PAM4 and NRZ conversion before and after The required photoelectric conversion can eliminate photoelectric conversion components, meet communication requirements and reduce the required power and component costs.

對於所屬技術領域中具有通常知識者顯而易見的是，在不脫離本發明的精神的情況下，本發明可以以其他特定形式實施。因此，以上描述不應在所有方面都被解釋為限制意義，而應被解釋為說明性的。 It is obvious to a person with ordinary knowledge in the technical field that the present invention can be implemented in other specific forms without departing from the spirit of the present invention. Therefore, the above description should not be construed as restrictive in all aspects, but as illustrative.

本發明的範圍應當透過對所附申請專利範圍的合理解釋來確定，並且在本發明的等同物的範圍內的所有改變都包含在本發明的範圍內。 The scope of the present invention should be determined by reasonable interpretation of the scope of the appended patent application, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

1:主動式光纜裝置 1: Active optical cable device

2:光收發模組 2: Optical transceiver module

11:介面單元 11: Interface unit

12:PAM4轉換裝置 12: PAM4 conversion device

13:光發射裝置 13: Light emitting device

14:光接收裝置14 14: Light receiving device 14

20:主動式電纜裝置 20: Active cable device

100:主動式光纜傳輸單元 100: Active optical cable transmission unit

101:主動式光纜接收單元 101: Active optical cable receiving unit

110:主機接收埠 110: Host receiving port

111:主機發送埠 111: Host sending port

121:PAM4編碼單元 121: PAM4 coding unit

122:PAM4解碼單元 122: PAM4 decoding unit

130:光纖單元 130: Optical fiber unit

131:透鏡單元 131: lens unit

132:VCSEL單元 132: VCSEL unit

133:雷射驅動器 133: Laser driver

140:接腳二極體 140: pin diode

141:轉阻放大器 141: transimpedance amplifier

Claims (10)

一種光收發系統，包括：一PAM4轉換裝置；一光發射裝置，耦接該PAM4轉換裝置並從該PAM4轉換裝置接收一第一PAM4信號；一光接收裝置，耦接該PAM4轉換裝置並傳輸一第二PAM4信號至該PAM4轉換裝置；以及一介面單元，通過一電纜單元耦接該PAM4轉換裝置並傳輸一第一NRZ信號至該PAM4轉換裝置；其中，該第一NRZ信號由該PAM4轉換裝置轉換為該第一PAM4信號，且該第二PAM4信號由該PAM4轉換裝置轉換為一第二NRZ信號，該第二NRZ信號被傳輸至該介面單元；其中，該PAM4轉換裝置包括PAM4編碼單元和PAM4解碼單元，該PAM4編碼單元包含CAUI接收單元、時脈資料恢復電路、信號多工器、前向糾錯編碼單元和PAM4編碼器，該PAM4解碼單元包含模數轉換器、數位信號處理單元、信號解多工器、前向糾錯解碼單元和CAUI發射單元。 An optical transceiver system, comprising: a PAM4 conversion device; a light emitting device coupled to the PAM4 conversion device and receiving a first PAM4 signal from the PAM4 conversion device; a light receiving device coupled to the PAM4 conversion device and transmitting a A second PAM4 signal to the PAM4 conversion device; and an interface unit, which is coupled to the PAM4 conversion device through a cable unit and transmits a first NRZ signal to the PAM4 conversion device; wherein the first NRZ signal is transferred from the PAM4 conversion device Converted into the first PAM4 signal, and the second PAM4 signal is converted into a second NRZ signal by the PAM4 conversion device, and the second NRZ signal is transmitted to the interface unit; wherein, the PAM4 conversion device includes a PAM4 encoding unit and PAM4 decoding unit, the PAM4 encoding unit includes a CAUI receiving unit, a clock data recovery circuit, a signal multiplexer, a forward error correction encoding unit, and a PAM4 encoder, and the PAM4 decoding unit includes an analog-to-digital converter, a digital signal processing unit, Signal demultiplexer, forward error correction decoding unit and CAUI transmitting unit. 如申請專利範圍第1項所述的光收發系統，其中，該介面單元包括一主機接收埠和一主機發送埠，該PAM4編碼單元耦接該主機接收埠以接收的該第一NRZ電信號，並轉換為該第一PAM4信號以輸出至該光發射裝置；該PAM4解碼單元耦接該主機發送埠，並用於從該光接收裝置接收該第二PAM4信號，並解碼為該第二NRZ電信號以由該主機發送埠輸出。 According to the optical transceiver system described in claim 1, wherein the interface unit includes a host receiving port and a host sending port, and the PAM4 encoding unit is coupled to the host receiving port to receive the first NRZ electrical signal, And converted into the first PAM4 signal to be output to the optical transmitting device; the PAM4 decoding unit is coupled to the host transmitting port and used for receiving the second PAM4 signal from the optical receiving device and decoding it into the second NRZ electrical signal To send the port output from the host. 如申請專利範圍第1項所述的光收發系統，其中，該電纜單元由銅線組成。 The optical transceiver system described in item 1 of the scope of patent application, wherein the cable unit is composed of copper wires. 如申請專利範圍第1項所述的光收發系統，其中，該光接收裝置包括一光纖單元、一透鏡單元、一接腳二極體、以及一轉阻放大器。 According to the optical transceiver system described in item 1 of the scope of patent application, the optical receiving device includes an optical fiber unit, a lens unit, a pin diode, and a transimpedance amplifier. 如申請專利範圍第1項所述的光收發系統，其中，該光發射裝置包括一光纖單元、一透鏡單元、一垂直共振腔面射雷射(VCSEL)單元、以及一雷射驅動器。 According to the optical transceiver system described in item 1 of the scope of patent application, the light emitting device includes an optical fiber unit, a lens unit, a vertical cavity surface emitting laser (VCSEL) unit, and a laser driver. 一種具有主動式光纜與主動式電纜的複合系統，包括：一主動式光纜裝置；一PAM4轉換裝置，耦接於該主動式光纜裝置；一光發射裝置，耦接該PAM4轉換裝置並從該PAM4轉換裝置接收一第一PAM4信號；一光接收裝置，耦接該PAM4轉換裝置並傳輸一第二PAM4信號至該PAM4轉換裝置；以及一介面單元，通過一主動式電纜裝置耦接該PAM4轉換裝置並傳輸一第一NRZ信號至該PAM4轉換裝置；其中，該第一NRZ信號由該PAM4轉換裝置轉換為該第一PAM4信號，且該第二PAM4信號由該PAM4轉換裝置轉換為一第二NRZ信號，該第二NRZ信號被傳輸至該介面單元；其中，該PAM4轉換裝置包括PAM4編碼單元和PAM4解碼單元，該PAM4編碼單元包含CAUI接收單元、時脈資料恢復電路、信號多工器、前向糾錯編碼單元和PAM4編碼器，該PAM4解碼單元包含模數轉換器、數位信號處理單元、信號解多工器、前向糾錯解碼單元和CAUI發射單元。 A composite system with active optical cable and active cable, including: an active optical cable device; a PAM4 conversion device coupled to the active optical cable device; a light emitting device coupled to the PAM4 conversion device and from the PAM4 A conversion device receives a first PAM4 signal; a light receiving device coupled to the PAM4 conversion device and transmits a second PAM4 signal to the PAM4 conversion device; and an interface unit coupled to the PAM4 conversion device through an active cable device And transmit a first NRZ signal to the PAM4 conversion device; wherein, the first NRZ signal is converted by the PAM4 conversion device into the first PAM4 signal, and the second PAM4 signal is converted by the PAM4 conversion device into a second NRZ Signal, the second NRZ signal is transmitted to the interface unit; wherein, the PAM4 conversion device includes a PAM4 encoding unit and a PAM4 decoding unit, and the PAM4 encoding unit includes a CAUI receiving unit, a clock data recovery circuit, a signal multiplexer, and a front A forward error correction coding unit and a PAM4 encoder. The PAM4 decoding unit includes an analog-to-digital converter, a digital signal processing unit, a signal demultiplexer, a forward error correction decoding unit, and a CAUI transmitting unit. 如申請專利範圍第6項所述的複合系統，其中，該主動式光纜裝置包括耦接該光接收裝置的一主動式光纜發送單元和耦接該光發射裝置的一主動式光纜接收單元，該介面單元包括一主機接收埠和一主機發送埠，該PAM4編碼單元耦接該主機接收埠以接收的該第 一NRZ電信號，並轉換為該第一PAM4信號以輸出至該光發射裝置；該PAM4解碼單元耦接該主機發送埠，並用於從該光接收裝置接收該第二PAM4信號，並解碼為該第二NRZ電信號以由該主機發送埠輸出。 The composite system described in item 6 of the scope of patent application, wherein the active optical cable device includes an active optical cable transmitting unit coupled to the optical receiving device and an active optical cable receiving unit coupled to the optical transmitting device, the The interface unit includes a host receiving port and a host sending port, and the PAM4 encoding unit is coupled to the host receiving port to receive the second An NRZ electrical signal is converted into the first PAM4 signal to be output to the optical transmitting device; the PAM4 decoding unit is coupled to the host transmitting port, and is used to receive the second PAM4 signal from the optical receiving device and decode it into the The second NRZ electrical signal is output by the sending port of the host. 如申請專利範圍第6項所述的複合系統，其中，該主動式電纜裝置由銅線組成。 The composite system described in item 6 of the scope of patent application, wherein the active cable device is composed of copper wires. 如申請專利範圍第6項所述的複合系統，其中，該光接收裝置包括一光纖單元、一透鏡單元、一接腳二極體、以及一轉阻放大器。 The composite system described in item 6 of the scope of patent application, wherein the light receiving device includes an optical fiber unit, a lens unit, a pin diode, and a transimpedance amplifier. 如申請專利範圍第6項所述的複合系統，其中，該光發射裝置包括一光纖單元、一透鏡單元、一垂直共振腔面射雷射(VCSEL)單元、以及一雷射驅動器。 According to the composite system described in item 6 of the scope of patent application, the light emitting device includes an optical fiber unit, a lens unit, a vertical cavity surface shot laser (VCSEL) unit, and a laser driver.
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