CN107294611A - The 400GDML optical transceiver modules modulated based on PAM4 - Google Patents
The 400GDML optical transceiver modules modulated based on PAM4 Download PDFInfo
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- CN107294611A CN107294611A CN201710517081.6A CN201710517081A CN107294611A CN 107294611 A CN107294611 A CN 107294611A CN 201710517081 A CN201710517081 A CN 201710517081A CN 107294611 A CN107294611 A CN 107294611A
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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
- H04B10/40—Transceivers
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Abstract
The present invention relates to a kind of 400G DML optical transceiver modules modulated based on PAM4, it includes Optical Transmit Unit and light receiving unit, the Optical Transmit Unit includes the first DSP Processor, driver, laser, the light receiving unit includes photoreceiver, second DSP Processor, first DSP Processor is used to carry out PAM4 modulation to the first NRZ electric signals, the driver is used to the electric signal for having carried out PAM4 modulation by the first DSP Processor being converted to drive signal, to drive the laser, the laser is used to the drive signal being converted to optical signal, to be launched, the photoreceiver is used to receive optical signal, and convert optical signals to PAM4 electric signals, and it is output to second DSP Processor；Second DSP Processor is used to be demodulated into the 2nd NRZ electric signal outputs to the PAM4 electric signals received from the photoreceiver.
Description
Technical field
The present invention relates to optical communication field, more particularly to meet IEEE802.3bs Fast Ethernet standards based on PAM4
The 400G DML optical transceiver modules of modulation.
Background technology
Recently as the development of internet, Internet Users all show explosion type using species, network bandwidth etc.
Growth, tremendous influence is generated to society and the life of people.Point-to-point technology, Online Video, social networks, movement are mutual
The development of connection just constantly swallows the network bandwidth.The technology such as cloud computing, big data is developed rapidly simultaneously, using super data center as
The cloud network of core, it is more urgent to bandwidth demand.
, can be by introducing PAM4 (quadravalences in order to lift the network capacity of interconnection at a high speed and reduce per bit transfer cost
Pulse amplitude modulation) technology improves transmission rate, to meet ever-increasing network bandwidth requirements.In identical baud rate
Under, the transmission rate of PAM4 pattern signals is twice of NRZ codes, can carry more information, and imitate with higher transmission
Rate.
The content of the invention
PAM4 modulation techniques are used in 400Gb/s optical modules by the application.The 400Gb/s optical modules modulated based on PAM4,
Due to using the modulation technique than NRZ higher order, the quantity of laser needed for transmitting terminal can be reduced, in receiving terminal, accordingly
The quantity of receiver needed for can reducing.PAM4 modulation reduces optical device number in optical module, optical module can be brought to be assembled into
This reduction, the advantage that power consumption is reduced and package dimension reduces.
Embodiments in accordance with the present invention, it is proposed that a kind of 400G DML optical transceiver modules modulated based on PAM4, including light
Receiving unit, Optical Transmit Unit and electric interface unit, UFIU UMSC Fiber Interface Unit, wherein：Optical Transmit Unit and electric interface unit it is many
Road high-speed electrical signals connection, the high-speed electrical signals of input are converted to high-speed optical signal by it, are launched at a high speed by UFIU UMSC Fiber Interface Unit
Optical signal；Light receiving unit receives high-speed optical signal by UFIU UMSC Fiber Interface Unit, and it is converted to the high-speed optical signal of input at a high speed
Electric signal output, is connected with the multi-channel high-speed electrical signal of electric interface unit；Optical Transmit Unit includes DSP Processor chip, driving
Device chip, chip of laser, wavelength division multiplexer, light receiving unit include demultiplexer, photoreceiver, DSP Processor chip.
What the embodiment of the present invention was realized in：
The first 400G DML optical transceiver module modulated based on PAM4, during transmitter unit signal：By 16 road 25G of reception
NRZ electric signals are inputted from electric interface unit, after DSP Processor is pre-processed to electric signal, PAM4 is modulated, and export 4 tunnels
50G PAM4 electric signal, is loaded on driver chip, and high-speed electrical signals are changed into 4 road 100Gbps by the laser on 4 tunnels
High-speed optical signal, after wavelength division multiplexer multiplex, synthesis 1 road 400G high-speed optical signal output.During receiving unit signal：
1 road 400G of reception high-speed optical signal is inputted by UFIU UMSC Fiber Interface Unit, is converted into 4 road 100Gbps' by demultiplexer
High-speed optical signal, input optical signal is received by photoreceiver, and the optical signal received is converted into after electric signal, is passed through
DSP process chips carry out being converted into 16 road 25G NRZ telecommunications after clock recovery, amplification, equilibrium, PAM4 demodulation to electric signal
Number.
Second of 400G DML optical transceiver module based on PAM4 modulation, during transmitter unit signal：By 16 road 25G of reception
NRZ electric signals are inputted from electric interface unit, after DSP Processor is pre-processed to electric signal, PAM4 is modulated, and export 8 tunnels
25G PAM4 electric signal, is loaded on driver chip, and high-speed electrical signals are changed into 8 road 50Gbps by the laser on 8 tunnels
High-speed optical signal, after wavelength division multiplexer multiplex, synthesis 1 road 400G high-speed optical signal output.During receiving unit signal：
1 road 400G of reception high-speed optical signal is inputted by UFIU UMSC Fiber Interface Unit, 8 road 50Gbps height is converted into by demultiplexer
Fast optical signal, input optical signal is received by photoreceiver, and the optical signal received is converted into after electric signal, is passed through
DSP process chips carry out being converted into 16 road 25G NRZ telecommunications after clock recovery, amplification, equilibrium, PAM4 demodulation to electric signal
Number.
The third 400G DML optical transceiver module modulated based on PAM4, during transmitter unit signal：By 8 road 50G of reception
NRZ electric signals are inputted from electric interface unit, after DSP Processor is pre-processed to electric signal, PAM4 is modulated, and export 4 tunnels
50G PAM4 electric signal, is loaded on driver chip, and high-speed electrical signals are changed into 4 road 100Gbps by the laser on 4 tunnels
High-speed optical signal, after wavelength division multiplexer multiplex, synthesis 1 road 400G high-speed optical signal output.During receiving unit signal：
1 road 400G of reception high-speed optical signal is inputted by UFIU UMSC Fiber Interface Unit, is converted into 4 road 100Gbps' by demultiplexer
High-speed optical signal, input optical signal is received by photoreceiver, and the optical signal received is converted into after electric signal, is passed through
DSP process chips carry out being converted into 8 road 50G NRZ electric signal after clock recovery, amplification, equilibrium, PAM4 demodulation to electric signal.
The 400G DML optical transceiver modules modulated based on PAM4 of the present invention, using PAM4 modulation techniques, for 400Gbps
Optical signal transmission, realize 400Gbps optical signal transceiver functions, the quantity of optical transceiver number of packages in optical module reduced, so as to drop
Low device assembly cost, reduction power consumption and reduction device space-consuming.
Brief description of the drawings
Fig. 1 is the illustrative view of functional configuration of first embodiment of the invention；
Fig. 2 is the illustrative view of functional configuration of second embodiment of the invention；
Fig. 3 is the illustrative view of functional configuration of third embodiment of the invention；
Fig. 4 is DML drivers and DML TOSA structural relations in first, second and third embodiment of the invention, driver can within
It is placed in TOSA, TOSA can also be placed on；
Fig. 5 is TOSA, ROSA combination in first, second and third embodiment of the invention, and n values can be 1,2,4.
Embodiment
Technical scheme is further described in detail with reference to the accompanying drawings and detailed description, thus, this
The advantage and feature of invention will be with description and it is apparent.It is convenient for statement, it is unified below that 25G＆28G b/ are represented with 25G
S dual rate signal, 50G＆56G b/s dual rate signal is represented with 50G.
Embodiment 1：
The first example of the present invention is a kind of 400G DML optical transceiver modules modulated based on PAM4, as shown in figure 1, bag
Include Optical Transmit Unit, light receiving unit and electric signal interface 101；Wherein, Optical Transmit Unit includes DSP Processor 102, (TOSA)
Driver 103, directly modulation laser (DML TOSA) 104, wavelength division multiplexer (MUX) 105, light receiving unit include demultiplexing
The road photoreceiver of device (DEMUX) 106,4 (PIN/TIA ROSA) 107, DSP Processor 108, there is provided module for electric signal interface 101
With the communication interface of external system.DSP Processor 102 realizes Electric signal processing and PAM4 modulation；DSP Processor 108 realizes electricity
Signal transacting and PAM4 demodulation.After the NRZ electric signals that 16 road 25G are received by electric signal interface 101, by DSP Processor 102
16 road 25G NRZ electric signals are pre-processed and PAM4 modulation, export 4 road 50G PAM4 electric signals, be loaded into driver
On 103, voltage and current amplification is carried out to this 4 road 50G PAM4 electric signals by driver 103, to drive 4 tunnels of rear class respectively
Direct modulation laser (DML TOSA) 104, by this 4 road 50G direct modulation laser (DML TOSA) 104 by 4 road 50G
PAM4 electric signal change optical signal (4 level optical signal) of the 4 tunnel baud rates into 50Gb/s, pass through wavelength division multiplexer (MUX)
105 export 4 road 100Gbps optical signals multiplex into after 1 road 400Gbps optical signals.
When receiving optical signal, the 400Gb/s high-speed optical signals on 1 tunnel of reception are changed by demultiplexer (DEMUX) 106
Into the 50Gb/s optical signals (4 level optical signal) on 4 tunnels, it will be received by 4 road 25G photoreceivers (PIN/TIA ROSA) 107
4 road optical signals be converted into 4 road electric signals, by DSP Processor 108 this 4 road electric signal is carried out clock recovery, amplification,
After balanced, PAM4 demodulation, it is converted into exporting after 16 road 25G NRZ electric signals.
Embodiment 2：
Second of example that the present invention is provided is as shown in Fig. 2 including Optical Transmit Unit, light receiving unit and electric signal interface
For 201；Wherein, there is provided module and the communication interface of external system for electric signal interface 201；Optical Transmit Unit includes：For telecommunications
Laser (DML TOSA) is directly modulated on DSP Processor 202 that number processing and PAM4 are modulated, (TOSA) driver 203,8 tunnels
204th, wavelength division multiplexer (MUX) 205；Light receiving unit includes：Road photoreceiver (the PIN/TIA of demultiplexer (DEMUX) 206,8
ROSA) the 207, DSP Processor 208 demodulated for Electric signal processing and PAM4.
After the NRZ electric signals that 16 road 25G are received by electric signal interface 201, by 202 couple of 16 road 25G's of DSP Processor
NRZ electric signals carry out pretreatment and PAM4 modulation, export 8 road 25G PAM4 electric signals, are loaded on driver 203, by driving
Device 203 carries out voltage and current amplification to this 8 road 25G PAM4 electric signals, to drive 8 tunnels of rear class directly to modulate laser respectively
Device (DML TOSA) 204, by this 8 road 25G direct modulation laser (DML TOSA) 204 by 8 road 25G PAM4 telecommunications
Number optical signal (4 level optical signal) of the 8 tunnel baud rates into 25Gb/s is changed, by wavelength division multiplexer (MUX) 205 by 8 tunnels
50Gbps optical signals multiplex is exported into after 1 road 400Gbps optical signals.
When receiving optical signal, the 400Gbps high-speed optical signals on 1 tunnel of reception are changed by demultiplexer (DEMUX) 206
Into the 25G optical signals (4 level optical signal) on 8 tunnels, by 8 road 25G photoreceivers (PIN/TIA ROSA) 207 by the light received
Signal is converted into 8 road electric signals, by DSP Processor 208 this 8 road electric signal is carried out clock recovery, amplification, equilibrium,
After PAM4 demodulation, it is converted into exporting after 16 road 25G NRZ electric signals.
Embodiment 3：
The third example that the present invention is provided is as shown in figure 3, including Optical Transmit Unit, light receiving unit and electric signal interface
For 301；Wherein, there is provided module and the communication interface of external system for electric signal interface 301；Optical Transmit Unit includes：For telecommunications
Laser (DML TOSA) is directly modulated on DSP Processor 302 that number processing and PAM4 are modulated, (TOSA) driver 303,4 tunnels
104, wavelength division multiplexer (MUX) 305；Light receiving unit includes：Road photoreceiver (the PIN/TIA of demultiplexer (DEMUX) 306,4
ROSA) the 307, DSP Processor 308 demodulated for Electric signal processing and PAM4.
After the NRZ electric signals that 8 road 50G are received by electric signal interface 301, by 302 couple of 8 road 50G's of DSP Processor
NRZ electric signals carry out pretreatment and PAM4 modulation, export 4 road 50G PAM4 electric signals, are loaded on driver 303, by driving
Device 303 carries out voltage and current amplification to this 4 road 50G PAM4 electric signals, to drive 4 tunnels of rear class directly to modulate laser respectively
After device (DML TOSA) 304, by this 4 road 50G direct modulation laser (DML TOSA) 304 by 4 road 50G PAM4's
Electric signal changes optical signal (4 level optical signal) of the 4 tunnel baud rates into 50Gb/s, by wavelength division multiplexer MUX305 by 4 tunnels
100Gbps optical signals multiplex is exported into after 1 road 400Gbps optical signals.
When receiving optical signal, the 400Gbps high-speed optical signals on 1 tunnel of reception are changed by demultiplexer (DEMUX) 306
Into the 50G optical signals (4 level optical signal) on 4 tunnels, by 4 road 50G photoreceivers (PIN/TIA ROSA) 307 by the light received
Signal is converted into after 4 road electric signals, by DSP Processor 308 this 4 road electric signal is carried out clock recovery, amplification, equilibrium,
After PAM4 demodulation, it is converted into exporting after 8 road 50G NRZ electric signals.
As shown in figure 4, the 400G DML optical transceiver modules modulated based on PAM4 of the present invention, in transmitting terminal, driver 103
(i.e. TOSA driving chips) is not limited to be internal or external at directly modulation laser 104 (DML TOSA).When driver 103
When (TOSA driving chips) is built in directly modulation laser 104 (DML TOSA), component internal laser and driver 103
Spun gold or other materials can be used to be electrically connected by bonding or Flip Chip Bond Technique formation for (TOSA driving chips)；Driver 103
When (TOSA driving chips) is placed on directly modulation laser 104 (DML TOSA), component internal laser and driver 103
(TOSA driving chips) is electrically connected by co-planar waveguide or microstrip transmission line.
As shown in figure 5, the 400G DML optical transceiver modules modulated based on PAM4 of the present invention, in transmitting terminal, are directly modulated
Laser 104 (DML TOSA) can be the form of single channel or multichannel；Driver 103 (TOSA driving chips) can be collection
Into or non-integration form one by one therewith correspond to be driven；At the same time, in receiving terminal, (the PIN/TIA of photoreceiver 107
ROSA single channel or multichannel form) are also corresponded to.
Although the description in above-mentioned Fig. 4-5 is indicated with the reference in embodiment 1, those skilled in the art
It should be understood that above-mentioned integrated/external mode and single channel/multichannel set other realities that can be applied equally to the present invention
Apply in example.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (10)
1. a kind of 400G DML optical transceiver modules modulated based on PAM4, including Optical Transmit Unit and light receiving unit；Its feature
It is：
The Optical Transmit Unit includes the first DSP Processor (102,202,302), driver (103,203,303), laser
(104,204,304), wavelength division multiplexer (105,205,305)；
The light receiving unit includes Wave decomposing multiplexer (106,206,306), photoreceiver (107,207,307), the 2nd DSP
Processor (108,208,308)；
First DSP Processor (102,202,302) is used to the first NRZ electric signals of input being modulated to multichannel PAM4 telecommunications
Number；
Multiple drivers (103,203,303) are used to the multichannel PAM4 electric signals being converted to multi-channel drive signal, with
Drive multiple lasers (104,204,304)；
Multiple lasers (104,204,304) are used to corresponding multi-channel drive signal being converted to multipath light signal, many
Road optical signal is 400Gbps optical signals through the wavelength division multiplexer (105,205,305) multiplex, to be launched；
The 400Gbps optical signals received are demultiplexing as the level light of multichannel 4 letter by the Wave decomposing multiplexer (106,206,306)
Number；
Multiple photoreceivers (107,207,307) are used to the level optical signal of multichannel 4 being converted to corresponding PAM4 electric signals,
And it is output to second DSP Processor (108,208,308)；
Second DSP Processor (108,208,308) is defeated for the PAM4 electric signals of reception to be demodulated into the 2nd NRZ electric signals
Go out.
2. optical transceiver module according to claim 1, it is characterised in that：
The NRZ electric signals are 16 road 25G NRZ electric signals；
First DSP Processor (102) is used for the PAM4 telecommunications that the NRZ electric signals of the 16 road 25G are modulated to 4 road 50G
Number；
The PAM4 electric signals of the 4 road 50G are converted to 4 road drive signals by 4 drivers (103), to drive described in 4
Laser (104)；
4 lasers (104) are converted to the drive signal 4 road 50G 4 level optical signals, and are output to institute
Wavelength division multiplexer (105) is stated, is launched with the optical signal for synthesizing 1 road 400Gbps.
3. optical transceiver module according to claim 2, it is characterised in that：
1 road 400Gbps optical signals of reception are demultiplexing as 4 road 50G 4 level optical signals by the Wave decomposing multiplexer (106)；
4 photoreceivers (107) are converted to 4 road 50G 4 level optical signals 4 road 50G PAM4 electric signals；
The NRZ electric signals that the PAM4 electric signals of the 4 road 50G are demodulated into 16 road 25G by second DSP Processor (108) are defeated
Go out.
4. optical transceiver module according to claim 1, it is characterised in that：
The NRZ electric signals are 16 road 25G NRZ electric signals；
First DSP Processor (202) is used for the PAM4 telecommunications that the NRZ electric signals of the 16 road 25G are modulated to 8 road 25G
Number；
The PAM4 electric signals of the 8 road 25G are converted to 8 road drive signals by 8 drivers (203), to drive described in 8
Laser (204)；
8 lasers (204) are converted to the drive signal 8 road 25G 4 level optical signals, and are output to institute
Wavelength division multiplexer (205) is stated, is launched with the optical signal for synthesizing 1 road 400Gbps.
5. optical transceiver module according to claim 4, it is characterised in that：
1 road 400Gbps optical signals of reception are demultiplexing as 8 road 25G 4 level optical signals by the Wave decomposing multiplexer (206)；
8 photoreceivers (207) are converted to 8 road 25G 4 level optical signals 8 road 25G PAM4 electric signals；
The NRZ electric signals that the PAM4 electric signals of the 8 road 25G are demodulated into 16 road 25G by second DSP Processor (208) are defeated
Go out.
6. optical transceiver module according to claim 1, it is characterised in that：
The NRZ electric signals are 8 road 50G NRZ electric signals；
First DSP Processor (302) is used for the PAM4 telecommunications that the NRZ electric signals of the 8 road 50G are modulated to 4 road 50G
Number；
The PAM4 electric signals of the 4 road 50G are converted to 8 road drive signals by 4 drivers (303), to drive described in 4
Laser (304)；
4 lasers (304) are converted to the drive signal 4 road 50G 4 level optical signals, and are output to institute
Wavelength division multiplexer (305) is stated, is launched with the optical signal for synthesizing 1 road 400Gbps.
7. optical transceiver module according to claim 6, it is characterised in that：
1 road 400Gbps optical signals of reception are demultiplexing as 4 road 50G 4 level optical signals by the Wave decomposing multiplexer (306)；
4 photoreceivers (307) are converted to 4 road 50G 4 level optical signals 4 road 50G PAM4 electric signals；
The NRZ electric signals that the PAM4 electric signals of the 4 road 50G are demodulated into 8 road 50G by second DSP Processor (308) are defeated
Go out.
8. the optical transceiver module according to any one of claim 1-7, it is characterised in that the wavelength division multiplexer (105,
205th, 305) TFF, AWG or MZI are included but is not limited to demultiplexer (106,206,306).
9. the optical transceiver module according to any one of claim 1-8, it is characterised in that support 25/28G and 50/56G double
Rate signal transmission.
10. the optical transceiver module according to any one of claim 1-9, it is characterised in that the driver (103,203,
303), laser (104,204,304) can be set in an integrated manner or non-integration mode is set；The driver (103,
203rd, 303), laser (104,204,304) and the photoreceiver (107,207,307) can for 1 group, 2 groups or 4 groups or
8 groups.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517081.6A CN107294611A (en) | 2017-06-29 | 2017-06-29 | The 400GDML optical transceiver modules modulated based on PAM4 |
| PCT/CN2017/118166 WO2019000875A1 (en) | 2017-06-29 | 2017-12-25 | 400g dml optical transceiver module based on pam4 modulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517081.6A CN107294611A (en) | 2017-06-29 | 2017-06-29 | The 400GDML optical transceiver modules modulated based on PAM4 |
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|---|---|
| CN107294611A true CN107294611A (en) | 2017-10-24 |
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ID=60098232
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| CN201710517081.6A Pending CN107294611A (en) | 2017-06-29 | 2017-06-29 | The 400GDML optical transceiver modules modulated based on PAM4 |
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| WO (1) | WO2019000875A1 (en) |
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| CN108306685A (en) * | 2018-01-11 | 2018-07-20 | 青岛海信宽带多媒体技术有限公司 | Optical module and TWDM passive optical network |
| WO2019000875A1 (en) * | 2017-06-29 | 2019-01-03 | 武汉光迅科技股份有限公司 | 400g dml optical transceiver module based on pam4 modulation |
| CN111865410A (en) * | 2019-04-30 | 2020-10-30 | 瞻博网络公司 | Method and apparatus for optical communication |
| CN114647030A (en) * | 2022-05-19 | 2022-06-21 | 深圳市迅特通信技术股份有限公司 | Silicon-based photoelectronic receiving and transmitting integrated chip for PON OLT system |
| CN116015470A (en) * | 2022-12-30 | 2023-04-25 | 深圳市光为光通信科技有限公司 | 400G optical communication module and signal optimization method |
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| WO2019000875A1 (en) | 2019-01-03 |
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Application publication date: 20171024 |