CN110401486A - A kind of optical module and light emitting control method - Google Patents
A kind of optical module and light emitting control method Download PDFInfo
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- CN110401486A CN110401486A CN201910726196.5A CN201910726196A CN110401486A CN 110401486 A CN110401486 A CN 110401486A CN 201910726196 A CN201910726196 A CN 201910726196A CN 110401486 A CN110401486 A CN 110401486A
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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
- H04B10/2589—Bidirectional transmission
- H04B10/25891—Transmission components
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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
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
- H04Q2011/0037—Operation
- H04Q2011/0039—Electrical control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
- H04Q2011/0037—Operation
- H04Q2011/0041—Optical control
Abstract
This application provides a kind of optical module and light emitting control methods, MCU control connection level conversion unit, the input terminal of level conversion unit exports reference level and control signal control level conversion unit and NRZ pattern electric signal is carried out level conversion for receiving NRZ pattern electric signal, MCU；The input terminal of the output end connection adder of level conversion unit, adder are used to receive the NRZ pattern electric signal after converting by level conversion unit；NRZ pattern electric signal after being converted by level conversion unit is carried out addition process by adder；The signal input part of the output end connecting laser of adder, laser receive adder addition process after electric signal and according to electric signal shine.Optical module and emission control method provided by the present application solve the compatibility issue between PAM4 pattern optical communication equipment and NRZ pattern optical communication equipment, convenient for using in optical communication equipment.
Description
Technical field
This application involves technical field of photo communication more particularly to a kind of optical module and light emitting control methods.
Background technique
In the application of Fibre Optical Communication Technology, need electric signal being converted to optical signal by the laser in optical module,
Then optical signal is coupled into the optical fiber of conduction optical signal.
Currently, mainly carrying out signal transmission using NRZ pattern in optical communication equipment, that is, uses and be made of 0 and 1 two level
Binary signal carry out signal transmission.But with the arrival of big data and cloud computing era, the growth of flow, for optic communication
More stringent requirements are proposed for the signal transmission rate of equipment.And the binary NRZ pattern being made of 0 and 1 two level is used,
Due to the limitation of electric signal modulation and transmission rate, it is made not to be able to satisfy the demand of current signal high transfer rate gradually.It is suitable
The demand for answering current signal transmission rate starts to occur carrying out signal transmission using PAM4 type signal.Compared with NRZ type signal,
PAM4 pattern has 4 kinds of digital amplitude level (such as respectively indicating 0,1,2,3), and symbol each in this way can include two bit
Information.So under identical baud rate, bit rate can achieve twice of NRZ pattern, greatly improve efficiency of transmission.
Discovery, original optical communication equipment that signal is transmitted using NRZ pattern (are denoted as NRZ pattern optic communication in use
Equipment), with optical communication equipment (being denoted as PAM4 pattern optical communication equipment) the mutual nothing for transmitting signal using PAM4 pattern
Method carries out compatible transmission.Currently, signal transmission is mostly to be transmitted between the optical communication equipment using identical pattern signal, such as: using
NRZ pattern optical communication equipment and using NRZ pattern optical communication equipment carry out signal transmission, using PAM4 pattern optical communication equipment with
Signal transmission is carried out using PAM4 pattern optical communication equipment.In this way, use of the optical communication equipment in signal transmission will be limited,
And the development trend of signal high transfer rate is not suitable for it.
Summary of the invention
This application provides a kind of optical module and light emitting control methods, solve PAM4 pattern optical communication equipment and NRZ code
Compatibility issue between type optical communication equipment, convenient for being used in optical communication equipment.
In a first aspect, this application provides a kind of optical module, including MCU, level conversion unit, adder and laser；
Wherein,
The MCU control connects the level conversion unit, and the input terminal of the level conversion unit is for receiving NRZ code
Type electric signal, the MCU output reference level and/or control signal control the level conversion unit for the NRZ pattern electricity
Signal carries out level conversion；
The output end of the level conversion unit connects the input terminal of the adder, and the adder passes through for receiving
NRZ pattern electric signal after level conversion unit conversion；The adder by it is described converted by level conversion unit after NRZ
Pattern electric signal carries out addition process；
The output end of the adder connects the signal input part of the laser, and the laser receives the adder
Electric signal after addition process simultaneously shines according to the electric signal.
Second aspect, this application provides a kind of light emitting control methods, which comprises
When for emitting PAM4 optical signal all the way, output control signal and reference level are controlled to level conversion unit
The two-way NRZ pattern electric signal for being input to the level conversion unit is carried out level conversion by the level conversion unit, and defeated
NRZ pattern electric signal after two-way level conversion out；
When for emitting NRZ pattern optical signal all the way, output control signal and reference level are controlled to level conversion unit
It makes the level conversion unit to convert the pattern electric signal of NRZ all the way for being input to the level conversion unit, and exports
NRZ pattern electric signal after level conversion all the way.
In a kind of optical module provided by the present application and light emitting control method, MCU control connection level conversion unit, level
The input terminal of converting unit receives NRZ pattern electric signal, the input terminal of the output end connection adder of level conversion unit, addition
The signal input part of the output end connecting laser of device.It is specifically used: when being used to emit PAM4 pattern optical signal, level conversion
Unit inputs two-way NRZ pattern electric signal, and MCU exports reference level and control signal control level conversion unit to two-way NRZ
Pattern electric signal carries out conversion process respectively, and the level magnitudes of NRZ pattern electric signal all the way are such as converted to another way NRZ pattern
Two-way NRZ pattern electric signal after conversion is separately input into the input terminal of adder, addition by twice of electrical signal levels amplitude
Two-way NRZ pattern electric signal after conversion is obtained PAM4 pattern electric signal all the way by addition process by device, and adder will be described
PAM4 pattern electric signal is input to laser, and driving laser emits PAM4 pattern optical signal；When for emitting NRZ pattern light letter
Number when, level conversion unit input NRZ pattern electric signal all the way, MCU exports reference level and control signal controls level conversion
Unit compensates conversion to NRZ pattern electric signal, and the NRZ pattern electric signal after conversion is separately input into the input of adder
End, adder receive the NRZ pattern electric signal after converting all the way and are input to laser, and driving laser emits NRZ code
Type optical signal.Therefore optical module provided by the present application, can be used for emitting PAM4 pattern optical signal and NRZ pattern optical signal, thus
It solves the problems, such as incompatible between novel PAM4 pattern optical communication equipment and existing NRZ pattern optical communication equipment, is greatly improved
The ease of use of optical module, uses in optical communication equipment convenient for it.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is optical communication terminal connection relationship diagram；
Fig. 2 is optical network unit structural schematic diagram；
Fig. 3 is a kind of structural schematic diagram of the optical module provided in the embodiment of the present application；
Fig. 4 is a kind of decomposition texture schematic diagram of the optical module provided in the embodiment of the present application；
Fig. 5 is a kind of circuit structure diagram of the optical module provided in the embodiment of the present application；
Fig. 6 is the circuit structure diagram of another optical module provided in the embodiment of the present application；
Fig. 7 is a kind of flow diagram of the light emitting control method provided in the embodiment of the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The core link of fiber optic communication first is that the conversion of photosignal.Fiber optic communication is existed using the optical signal for carrying information
It is transmitted in optical fiber/optical waveguide, low cost may be implemented using the passive transmission characteristic of light in a fiber, low-loss information passes
It is defeated.And the information processing equipments such as computer are using electric signal, this just need to realize in signals transmission electric signal with
The mutual conversion of optical signal.
Optical module realizes above-mentioned photoelectric converting function in technical field of optical fiber communication, and optical signal and the mutual of electric signal turn
Change be optical module core function.Optical module realizes being electrically connected between external host computer by the golden finger on circuit board,
Main electrical connection includes power supply, I2C signal, transmission data-signal and ground connection etc., and the electric connection mode that golden finger is realized is
Through becoming the standard mode of optical module industry, based on this, circuit board is technical characteristic indispensable in most of optical module.
Fig. 1 is optical communication terminal connection relationship diagram.As shown in Figure 1, the connection of optical communication terminal mainly includes light net
Network unit 100, optical module 200, optical fiber 101 and cable 103；
One end of optical fiber connects remote server, and one end of cable connects local information processing equipment, local information processing
The connection of equipment and remote server is completed by the connection of optical fiber and cable；And the connection between optical fiber and cable is by with optical mode
The optical network unit of block is completed.
The optical port of optical module 200 is connect with optical fiber 101, is established two-way optical signal with optical fiber and is connect；The electricity of optical module 200
In mouth access optical network unit 100, two-way electric signal is established with optical network unit and is connect；Optical module realizes optical signal and telecommunications
Number mutual conversion, thus realize connection is established between optical fiber and optical network unit；Specifically, from the optical signals of optical fiber
Optical module is input in optical network unit 100 after being converted to electric signal, and the electric signal from optical network unit 100 is turned by optical module
Optical signal is changed to be input in optical fiber.Optical module 200 is the tool realizing photosignal and mutually converting, without processing data
Function, in above-mentioned photoelectric conversion process, information does not change.
Optical network unit has optical module interface 102, for accessing optical module, establishes two-way electric signal with optical module and connects
It connects；There is optical network unit cable interface 104 to establish two-way electric signal for accessing cable with cable and connect；Optical module with
Connection is established by optical network unit between cable, specifically, the signal from optical module is passed to cable by optical network unit,
Signal from cable is passed into optical module, work of the optical network unit as the ipc monitor optical module of optical module.
So far, remote server is by optical fiber, optical module, optical network unit and cable, with local information processing equipment it
Between establish two-way signal transmission channels.
Common information processing equipment includes router, interchanger, electronic computer etc.；Optical network unit is optical module
Host computer provides data-signal to optical module, and receives the data-signal from optical module, and common optical module host computer is also
Optical line terminal etc..
Fig. 2 is optical network unit structural schematic diagram.As shown in Fig. 2, having circuit board 105, In in optical network unit 100
Cage 106 is arranged in the surface of circuit board 105；It is provided with electric connector in cage 106, for accessing the optical modules such as golden finger electricity
Mouthful；Radiator 107 is provided on cage 106, radiator 107 has the bulge-structures such as the fin of increasing heat radiation area.
Optical module 200 is inserted into optical network unit, specially the electric connector in the power port insertion cage 106 of optical module,
The optical port of optical module is connect with optical fiber 101.
Cage 106 is located on circuit board, and the electric connector on circuit board is wrapped in cage；Optical module is inserted into cage
In, by the fixed optical module of cage, the heat that optical module generates is conducted to cage by optical module shell, eventually by cage
Radiator 107 is diffused.
Fig. 3 is a kind of structural schematic diagram of optical module 200 provided by the embodiments of the present application, and Fig. 4 mentions for the embodiment of the present invention
For the decomposition texture schematic diagram of optical module 200.As shown in Figure 3 and Figure 4, optical module 200 provided by the embodiments of the present application includes upper
Shell 201, lower case 202, release lever 203 and circuit board 204, are arranged on circuit board 204 or connection is used for light-receiving and light
The component of transmitting.
Upper housing 201 and lower case 202 form tool there are two the package cavity being open, and specifically can be unidirectional
Both ends open (205,206) is also possible to be open at two in different directions；One of opening is power port 205, for inserting
Enter in the host computers such as optical network unit, another opening is optical port 206, is accessed for external fiber to connect internal optical fiber, electricity
The photoelectric devices such as road plate 204 are located in package cavity.
Upper housing 201 and lower case 202 generally use metal material, are conducive to realize electromagnetic shielding and heat dissipation；Using upper
The assembly method that shell 201, lower case 202 combine will not generally incite somebody to action convenient for the devices such as circuit board 204 are installed in shell
The shell of optical module is made of one structure, in this way in devices such as wiring harness plates, positioning element, heat dissipation and electromagnetic shielding knot
Structure can not be installed, and production automation is also unfavorable for.
Release lever 203 is located at the outer wall of package cavity/lower case 202, pulls the end of release lever that can make to solve
Handle is locked to relatively move in outer wall surface；Optical module is fixed on host computer by release lever 203 when optical module is inserted into host computer
Cage in, by pulling release lever 203 to release the snap-fit relationship of optical module and host computer, so as to by optical module from
It is extracted out in the cage of host computer.
Optical module 200 provided by the embodiments of the present application is convenient for for emitting PAM4 pattern optical signal or NRZ pattern optical signal
Solve the compatibility issue between PAM4 pattern optical communication equipment and NRZ pattern optical communication equipment.
Fig. 5 is a kind of electrical block diagram of optical module 200 provided by the embodiments of the present application.As shown in figure 5, the application
The optical module 200 that embodiment provides includes MCU301, level conversion unit, adder 302 and laser 303.
In the embodiment of the present application, the input terminal of MCU301 control connection level conversion unit, level conversion unit receives
NRZ pattern electric signal, the input terminal of the output end connection adder 302 of level conversion unit, the output end connection of adder 302
The signal input part of laser 303.
In the embodiment of the present application, MCU301 is to level conversion unit output reference level and control signal, for controlling
The level conversion of level conversion unit progress NRZ pattern electric signal.The input terminal of level conversion unit receives NRZ pattern telecommunications
Number, and according to the level conversion of the reference level of the MCU301 output received and control signal progress NRZ pattern electric signal, and
NRZ pattern electric signal after level conversion is exported to adder 302, adder 302 is carried out to NRZ pattern electric signal is received
Addition process, and by the electric signal transmission exported after addition process to laser 303 drives laser 303 based on receiving
Electric signal emits laser.In the embodiment of the present application, level conversion unit includes electrical level transferring chip.
In the embodiment of the present application, MCU301 obtains the pattern that optical module emits optical signal by host computer, to export
Reference level and control signal carry out the control of level conversion unit, and reference level is for controlling level conversion unit for input
The level magnitudes that NRZ pattern electric signal exports after turning, control signal is for controlling opening or closing for level conversion unit.Specifically
:
Need optical module for when emitting PAM4 pattern optical signal when MCU301 is got by host computer, MCU301 is to electricity
Flat converting unit output reference level and control signal.When level conversion unit receives two-way NRZ pattern electric signal, for convenient for
Two-way NRZ pattern electric signal is denoted as NRZ1 and NRZ2 by description.If using the bit of NRZ1 as PAM4 pattern electric signal two
A high position in bit, NRZ2 is as low level, then the output level after NRZ1 is converted is set as output level after NRZ2 is converted
Twice.The reference level and control signal that so MCU301 is exported to level conversion unit, control level conversion unit respectively will
Output level after NRZ1 and NRZ2 carry out level magnitudes conversion, and the amplitude NRZ2 of output level is converted after converting NRZ1
Twice of amplitude.Level conversion unit level magnitudes are converted after NRZ1 and NRZ2 be separately input into adder 302, level width
By the processing output of adder 302 using the level"1" amplitude of NRZ2 as benchmark, combination is formed by NRZ1 and NRZ2 after degree conversion
The PAM4 pattern electric signal of " 0 ", " 1 ", " 2 " and " 3 " four kinds of level.Laser is driven by the electric signal that adder 302 exports
303, laser 303 emits PAM4 pattern optical signal based on the PAM4 pattern electric signal that combination is formed.In the embodiment of the present application,
When level conversion unit carries out the conversion of NRZ1 and NRZ2 level magnitudes, usually consider that circuit loss carries out NRZ1 and NRZ2 and mends in advance
It repays.
Need optical module for when emitting NRZ pattern optical signal when MCU301 is got by host computer, MCU301 is to electricity
Flat converting unit output reference level and control signal, level conversion unit receive NRZ pattern electric signal all the way.Level conversion
Unit carries out level magnitudes conversion, output packet according to the output reference level and control signal received, by NRZ pattern electric signal
Include the NRZ pattern electric signal of " 0 " and " 1 " two kinds of level.Only NRZ pattern electric signal input summer 302, adder will all the way
The NRZ pattern electric signal is directly exported to laser 303.NRZ pattern electric signal drives laser 303, and laser 303 is based on
The NRZ pattern electric signal emits NRZ pattern optical signal.
Therefore, optical module 200 provided by the embodiments of the present application can carry out transmitting optical signal according to the actual demand of host computer
The switching of pattern both may be implemented two-way NRZ pattern electric signal synthesis PAM4 pattern electric signal all the way, and then generate PAM4 all the way
Pattern optical signal, and it is able to achieve common NRZ pattern optical signal transmission, it is conveniently used for PAM4 pattern optical communication equipment and NRZ
Signal transmission between pattern optical communication equipment, solves the problems, such as that novel PAM4 pattern communication equipment and existing NRZ equipment are incompatible.
Fig. 6 is the electrical block diagram of another optical module provided by the embodiments of the present application.As shown in Fig. 6, at this
Apply in specific embodiment, level conversion unit includes the first electrical level transferring chip 304 and second electrical level conversion chip 305.
The input terminal of first electrical level transferring chip 304 and second electrical level conversion chip 305 is respectively used to receive NRZ pattern electric signal, the
The output end of one electrical level transferring chip 304 and second electrical level conversion chip 305 is separately connected the input terminal of adder 302, addition
The signal input part of the output end connecting laser 303 of device 302.MCU controls the first electrical level transferring chip 304 of connection and the respectively
Two electrical level transferring chips 305 export corresponding ginseng to the first electrical level transferring chip 304 and second electrical level conversion chip 305 respectively
It examines level and control signal, controls the first electrical level transferring chip 304 and second electrical level conversion chip 305 according to being an actually-received
The NRZ pattern electric signal that reference level and control signal input it carries out level magnitudes conversion.
Optionally, in the embodiment of the present application, the input terminal of the first electrical level transferring chip 304 is for receiving first via NRZ
Pattern electric signal (such as NRZ1), the input terminal of second electrical level conversion chip 305 is for receiving the second road NRZ pattern electric signal (such as
NRZ2)。
When for when emitting PAM4 pattern optical signal, the input terminal of the first electrical level transferring chip 304 to receive NRZ1, the second electricity
Flat conversion chip 305 receives NRZ2.During carrying out level magnitudes conversion, MCU301 is respectively to the first electrical level transferring chip
304 and second electrical level conversion chip 305 export reference level and control signal.If using the bit of NRZ1 as PAM4 pattern electricity
A high position in two bit of signal, NRZ2 is as low level, then the output level after NRZ1 is converted is set as defeated after NRZ2 is converted
Twice of level out.And assume that MCU301 exports the first reference level and the first control letter to the first electrical level transferring chip 304
Number, MCU301 to second electrical level conversion chip 305 export the second reference level and second control signal, then the first level conversion
Chip 304 carries out the conversion of the level magnitudes of NRZ1 according to the first reference level and first control signal, and level magnitudes are turned
NRZ1 input summer 302 after changing, then second electrical level conversion chip 305 is according to the second reference level and second control signal
The conversion of the level magnitudes of NRZ2 is carried out, and the NRZ2 input summer 302 after level magnitudes are converted, exports NRZ1 after conversion
Level magnitudes be to export after conversion twice of NRZ level magnitudes.NRZ1 and NRZ2 after level magnitudes conversion pass through adder
Using the level"1" amplitude of NRZ2 as benchmark, combination forms the PAM4 of " 0 ", " 1 ", " 2 " and " 3 " four kinds of level for 302 processing outputs
Pattern electric signal.Laser 303, the PAM4 that laser 303 is formed based on combination are driven by the electric signal that adder 302 exports
Pattern electric signal emits PAM4 pattern optical signal.If using the bit of NRZ2 as the height in two bit of PAM4 pattern electric signal
Position can be believed by switching output to the reference level of the first electrical level transferring chip 304 and second electrical level conversion chip 305 and control
Number realize.
When for when emitting NRZ pattern optical signal, it is assumed that use NRZ1 as input electrical signal, MCU301 is to second electrical level
Conversion chip 305 exports enabled switch control second electrical level conversion chip 305 and closes, and the first electrical level transferring chip 304 receives
NRZ1, MCU301 export the first reference level and first control signal, the first level conversion core to the first electrical level transferring chip 304
Piece 304 carries out the conversion of the level magnitudes of NRZ1 according to the first reference level and first control signal, and level magnitudes are converted
NRZ1 input summer 302 afterwards, adder 302 receives only the NRZ1 after level magnitudes conversion, after level magnitudes are converted
NRZ1 export to laser 303, drive laser 303, laser 303 emits NRZ pattern light based on the NRZ1 that combination is formed
Signal.So by the output level of control adjustment electrical level transferring chip, so that laser is driven with the NRZ1 signal of suitable amplitude
Device completes the transmission of NRZ optical signal.When using NRZ2 as input electrical signal, by MCU301 to the first level conversion core
Piece 304 exports enabled the first electrical level transferring chip of switch control 304 and closes, to the operation of second electrical level conversion chip 305 referring to
Above description, details are not described herein.
And in the embodiment of the present application, when receiving two-way NRZ pattern electric signal transmitting PAM4 pattern optical signal all the way,
The output level that two electrical level transferring chips are adjusted by MCU301, can be to the relative amplitude scale of four level of PAM4 pattern
It is controlled, so as to improve the quality of PAM4 light eye figure, improves the performance of whole system.
Optical module provided by the embodiments of the present application helps to realize the flexible switching of transmitting optical signal pattern, improves optical mode
The flexibility that block uses.
For the implementation convenient for optical module provided by the embodiments of the present application, the embodiment of the present application also provides a kind of light emitting controls
Method processed, the light emitting control method are applied in optical module, are executed especially by MCU.
Fig. 7 is a kind of flow chart of light emitting control method provided by the embodiments of the present application.As shown in fig. 7, the application is real
The light emitting control method of example offer is provided, comprising:
S100: when for emitting PAM4 optical signal all the way, output control signal and reference level to level conversion unit,
It controls the level conversion unit and the two-way NRZ pattern electric signal for being input to the level conversion unit is subjected to level conversion,
And export the NRZ pattern electric signal after two-way level conversion.
S200: when for emitting NRZ pattern optical signal all the way, output controls signal and reference level to level conversion list
Member controls the level conversion unit and converts the pattern electric signal of NRZ all the way for being input to the level conversion unit, and
NRZ pattern electric signal after exporting level conversion all the way.
In the embodiment of the present application, MCU obtains the pattern that optical module emits optical signal by host computer, so that it is determined that optical mode
Block is still used to emit NRZ pattern optical signal all the way for emitting PAM4 optical signal all the way.
Further, in light emitting control method provided by the embodiments of the present application, when for emitting PAM4 optical signal all the way
When, output controls signal and reference level to level conversion unit, comprising:
When for emitting PAM4 optical signal all the way, exports first control signal and the first reference level to the first level turns
Chip is changed, exports second control signal and the second reference level to second electrical level conversion chip；
According to the first control signal and the first reference level, institute will be input to by controlling first electrical level transferring chip
The first via NRZ pattern electric signal for stating the first electrical level transferring chip carries out the first via after level conversion and output level conversion
NRZ pattern electric signal；
According to the second control signal and the second reference level, institute will be input to by controlling the second electrical level conversion chip
The the second road NRZ pattern electric signal for stating second electrical level conversion chip carries out the second tunnel after level conversion and output level conversion
NRZ pattern electric signal.
Further, in light emitting control method provided by the embodiments of the present application, believe when for emitting NRZ pattern light all the way
Number when, output control signal and reference level are to level conversion unit, comprising:
When for emitting NRZ pattern optical signal all the way, output controls signal and reference level to the first level conversion core
Piece outputs enable signal to second electrical level conversion chip；
According to the control signal and reference level, first electricity will be input to by controlling first electrical level transferring chip
The pattern electric signal of NRZ all the way of flat conversion chip carries out level conversion and exports the NRZ pattern electric signal after level conversion all the way；
According to the enable signal, controls the second electrical level conversion chip and close.
Further, in light emitting control method provided by the embodiments of the present application, when for emitting NRZ pattern light all the way
When signal, output controls signal and reference level to level conversion unit, comprising:
When for emitting NRZ pattern optical signal all the way, the first electrical level transferring chip, output control are outputed enable signal to
Signal and reference level are to second electrical level conversion chip；
According to the enable signal, controls first electrical level transferring chip and close；
According to the control signal and reference level, second electricity will be input to by controlling the second electrical level conversion chip
The pattern electric signal of NRZ all the way of flat conversion chip carries out level conversion and exports the NRZ pattern electric signal after level conversion all the way.
Light emitting control method provided by the embodiments of the present application obtains specifically used referring to optical module provided by the above embodiment
Described in, details are not described herein.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments, and related place is referring to side
The part of method embodiment illustrates.It should be noted that those skilled in the art are considering the hair of specification and practice here
After bright, other embodiments of the present invention will readily occur to.This application is intended to cover any modification of the invention, purposes or fit
Answering property changes, these variations, uses, or adaptations follow general principle of the invention and do not invent including the present invention
Common knowledge or conventional techniques in the art.The description and examples are only to be considered as illustrative, the present invention
True scope and spirit be indicated by the following claims.
It should be understood that the application is not limited to the precise structure that has been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by the accompanying claims.
Claims (6)
1. a kind of optical module, which is characterized in that the optical module includes MCU, level conversion unit, adder and laser；Its
In,
The MCU control connects the level conversion unit, and the input terminal of the level conversion unit is for receiving NRZ pattern electricity
Signal, the MCU output reference level and/or control signal control the level conversion unit for the NRZ pattern electric signal
Carry out level conversion；
The output end of the level conversion unit connects the input terminal of the adder, and the adder passes through level for receiving
NRZ pattern electric signal after converting unit conversion；The adder by it is described converted by level conversion unit after NRZ pattern
Electric signal carries out addition process；
The output end of the adder connects the signal input part of the laser, and the laser receives the adder addition
Treated electric signal simultaneously shines according to the electric signal.
2. optical module according to claim 1, which is characterized in that the level conversion unit includes the first level conversion core
Piece and second electrical level conversion chip；
The input terminal of first electrical level transferring chip is for receiving first via NRZ pattern electric signal, the second electrical level conversion
The input terminal of chip is for receiving the second road NRZ pattern electric signal；
The output end of the output end of first electrical level transferring chip and the second electrical level conversion chip is separately connected described add
The input terminal of musical instruments used in a Buddhist or Taoist mass；
The MCU is controlled respectively connects first electrical level transferring chip and the second electrical level conversion chip.
3. a kind of light emitting control method, which is characterized in that the described method includes:
When for emitting PAM4 optical signal all the way, output control signal and reference level are to level conversion unit, described in control
The two-way NRZ pattern electric signal for being input to the level conversion unit is carried out level conversion by level conversion unit, and exports two
NRZ pattern electric signal after the level conversion of road；
When for emitting NRZ pattern optical signal all the way, output control signal and reference level control institute to level conversion unit
It states level conversion unit to convert the pattern electric signal of NRZ all the way for being input to the level conversion unit, and exports all the way
NRZ pattern electric signal after level conversion.
4. light emitting control method according to claim 3, which is characterized in that when for emitting PAM4 optical signal all the way
When, output controls signal and reference level to level conversion unit, comprising:
When for emitting PAM4 optical signal all the way, first control signal and the first reference level to the first level conversion core are exported
Piece exports second control signal and the second reference level to second electrical level conversion chip；
According to the first control signal and the first reference level, described the will be input to by controlling first electrical level transferring chip
The first via NRZ pattern electric signal of one electrical level transferring chip carries out the first via NRZ code after level conversion and output level conversion
Type electric signal；
According to the second control signal and the second reference level, described will be input to by controlling the second electrical level conversion chip
Second road NRZ pattern electric signal of two electrical level transferring chips carries out the second road NRZ code after level conversion and output level conversion
Type electric signal.
5. light emitting control method according to claim 3, which is characterized in that believe when for emitting NRZ pattern light all the way
Number when, output control signal and reference level are to level conversion unit, comprising:
When for emitting NRZ pattern optical signal all the way, output control signal and reference level are defeated to the first electrical level transferring chip
Enable signal is to second electrical level conversion chip out；
According to the control signal and reference level, first level turn will be input to by controlling first electrical level transferring chip
The pattern electric signal of NRZ all the way for changing chip carries out level conversion and exports the NRZ pattern electric signal after level conversion all the way；
According to the enable signal, controls the second electrical level conversion chip and close.
6. light emitting control method according to claim 3, which is characterized in that believe when for emitting NRZ pattern light all the way
Number when, output control signal and reference level are to level conversion unit, comprising:
When for emitting NRZ pattern optical signal all the way, the first electrical level transferring chip, output control signal are outputed enable signal to
With reference level to second electrical level conversion chip；
According to the enable signal, controls first electrical level transferring chip and close；
According to the control signal and reference level, the second electrical level turn will be input to by controlling the second electrical level conversion chip
The pattern electric signal of NRZ all the way for changing chip carries out level conversion and exports the NRZ pattern electric signal after level conversion all the way.
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