CN109981183A - A kind of communication system and its optical module - Google Patents
A kind of communication system and its optical module Download PDFInfo
- Publication number
- CN109981183A CN109981183A CN201910184884.3A CN201910184884A CN109981183A CN 109981183 A CN109981183 A CN 109981183A CN 201910184884 A CN201910184884 A CN 201910184884A CN 109981183 A CN109981183 A CN 109981183A
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- signal
- format
- optical module
- electric signal
- optical
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Classifications
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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
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
- H04B10/25752—Optical arrangements for wireless networks
- H04B10/25758—Optical arrangements for wireless networks between a central unit and a single remote unit by means of an optical fibre
- H04B10/25759—Details of the reception of RF signal or the optical conversion before the optical fibre
-
- 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
- H04B10/6932—Bandwidth control of bit rate adaptation
Abstract
The invention discloses a kind of communication system and its optical modules, including processor；Format conversion apparatus, for the electric signal of the non-return to zero code NRZ format received to be converted to the electric signal of preset format under the control of a processor；Photoelectric conversion device, for exporting after the electric signal of preset format is converted to optical signal to optical fiber；Wherein, the transmission rate of the signal of preset format is greater than the transmission rate of the signal of NRZ format.In the present invention, the electric signal of the NRZ format received can be converted to the electric signal of preset format by format conversion apparatus under the control of a processor, then it exports after the electric signal of preset format being converted to optical signal by photoelectric conversion device again to optical fiber, since the transmission rate of the signal of preset format is greater than the signal of NRZ format, therefore the optical module in the present invention enables to the data of preset format to transmit in a fiber, communication speed is improved, user experience is preferable.
Description
Technical field
The present invention relates to the communications fields, and more particularly to a kind of optical module, the invention further relates to a kind of communication systems.
Background technique
Optical fiber is commonly used in existing communication network to transmit data, in entire communication network, optical module plays will be electric
The effect that signal and optical signal are mutually converted, but optical module in the prior art is merely able to NRZ (Non-Return to
Zero, non-return to zero code) electric signal of format is converted to output after optical signal, to optical fiber, this, which is also limited, is merely able to pass in optical fiber
The data of defeated NRZ format, message transmission rate of NRZ format itself is lower, so that communication speed is slower, poor user experience.
Therefore, how to provide a kind of scheme of solution above-mentioned technical problem is that those skilled in the art need to solve at present
Problem.
Summary of the invention
The object of the present invention is to provide a kind of optical module, improve the message transmission rate of fiber optic network, user experience compared with
It is good；It is a further object of the present invention to provide a kind of communication system including above-mentioned optical module, the data for improving fiber optic network are passed
Defeated rate, better user experience.
In order to solve the above technical problems, the present invention provides a kind of optical modules, comprising:
Processor；
Format conversion apparatus, under the control of the processor by the telecommunications of the non-return to zero code NRZ format received
Number be converted to the electric signal of preset format；
Photoelectric conversion device, for exporting after the electric signal of the preset format is converted to optical signal to optical fiber；
Wherein, the transmission rate of the signal of the preset format is greater than the transmission rate of the signal of the NRZ format.
Preferably, the preset format is that four level pulse amplitudes modulate PAM4 format.
Preferably, the optical module further include:
Signal processing apparatus, for the electric signal for passing through the preset format of format conversion to be carried out default place
Reason, so as to the transmission that the electric signal is more stable.
Preferably, the default processing includes at least one of rectification, filtering and amplification.
Preferably, the format conversion apparatus and the signal processing apparatus are digital signal processor DSP.
Preferably, the optical signal for the preset format that the photoelectric conversion device is also used to receive is converted to telecommunications
Number；
Then the format conversion apparatus is also used under the control of the processor turn the electric signal of the preset format
Corresponding interchanger or router are sent to after being changed to the NRZ format.
Preferably, the photoelectric conversion device includes:
Laser diode drive LDD, for the electric signal of the preset format to be converted to current signal；
Laser, the current signal for sending the LDD export after being converted to optical signal to optical fiber；
Photodiode, for the optical signal received to be converted to current signal；
Trans-impedance amplifier, the current signal for sending the photodiode are converted to electric signal.
Preferably, the optical module further include:
Temperature control equipment；
Then the processor is also used to control the temperature of the temperature control equipment to preset value, so as to optical module peace
Row for the national games.
Preferably, the temperature control equipment is semiconductor cooler TEC.
In order to solve the above technical problems, the present invention also provides a kind of communication systems, including as above described in any item light
Module.
The present invention provides a kind of optical modules, including processor；Format conversion apparatus under the control of a processor will be used for
The electric signal of the non-return to zero code NRZ format received is converted to the electric signal of preset format；Photoelectric conversion device, for that will preset
The electric signal of format exports after being converted to optical signal to optical fiber；Wherein, the transmission rate of the signal of preset format is greater than NRZ format
Signal transmission rate.
As it can be seen that format conversion apparatus can be under the control of a processor by the telecommunications of the NRZ format received in the present invention
The electric signal for number being converted to preset format, after the electric signal of preset format is then converted to optical signal by photoelectric conversion device again
It exports to optical fiber, since the transmission rate of the signal of preset format is greater than the signal of NRZ format, the optical module in the present invention
It enables to the data of preset format to transmit in a fiber, improves communication speed, user experience is preferable.
The present invention also provides a kind of communication systems, have the identical beneficial effect of optical module as above.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of optical module provided by the invention；
Fig. 2 is the structural schematic diagram of another optical module provided by the invention.
Specific embodiment
Core of the invention is to provide a kind of optical module, improves the message transmission rate of fiber optic network, user experience compared with
It is good；Another core of the invention is to provide a kind of communication system including above-mentioned optical module, and the data for improving fiber optic network pass
Defeated rate, better user experience.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Referring to FIG. 1, Fig. 1 is a kind of structural schematic diagram of optical module provided by the invention, comprising:
Processor 1；
Format conversion apparatus 2, it is pre- for being converted to the electric signal of the NRZ format received under the control of processor 1
If the electric signal of format；
Photoelectric conversion device 3, for exporting after the electric signal of preset format is converted to optical signal to optical fiber；
Wherein, the transmission rate of the signal of preset format is greater than the transmission rate of the signal of NRZ format.
Specifically, from 4G (the 4th Generation mobile communication technology, forth generation
Mobile communication technology) extremely upcoming 5G (the 5th Generation mobile communication
Technology, the 5th third-generation mobile communication technology), flow growth is very swift and violent, but forms distinct contrast with this, operator
Income still increased with low speed, the price scissors of the two is increasing.How to reduce the imbalance of flow and income is operator
The big pain spot of one faced.If can solve this pain spot, undoubtedly advantage can be obtained in the competition of 5G solution.Most effective reduction
The measure of price scissors is to reduce cost.In the cost structure of mobile bearer network equipment, optical module accounting is increasing.If can
The cost of optical module is effectively reduced, can undoubtedly play the role of to the whole net equipment cost of reduction vital.Performance demand: with
Earlier generations mobile network compares, and the ability of 5G network will develop by leaps and bounds.For example, down peak magnitude data rate is up to 20Gbps,
And upstream peak data rate can exceed that 10Gbps.In terms of infrastructure, operator should carry out network rack end to end
Structure transformation, building enhance the bandwidth expansion flexibility of its infrastructure from access net, convergence net to the resilient infrastructure of core net.
Such as based on single channel 50G PAM4 (Pulse Amplitude Modulation, the modulation of four level pulse amplitudes) technology
400GE/200GE/50GE can be adapted to demand of the 5G to network cost and performance very well, construct from accessing, converge to core
The optimal solution of net.
It, first can be by its turn after format conversion apparatus 2 receives the electric signal of NRZ format in the embodiment of the present invention
It is changed to the electric signal of preset format, electric signal is then carried out to the conversion of optical signal by photoelectric conversion device 3 again and is exported to light
Fibre just can transmit the data of preset format in such cases in fiber optic network, due to the transmission speed of the signal of preset format
Rate is greater than the transmission rate of the signal of NRZ format, and the embodiment of the present invention improves the message transmission rate of communication network, improves
User experience, additionally, due to the promotion of message transmission rate, under same transmission speed, using one in the embodiment of the present invention
A optical module can replace the more than one optical module in original communication system, the corresponding number of fibers of optical module also phase
It reduces with answering, significantly reduces the cost in communication system.
Specifically, the electric signal of the NRZ format received can be equipment transmission connect with optical module, such as can be with
For interchanger or router etc., the embodiment of the present invention is it is not limited here.
Specifically, the electric signal of preset format can be multiple types, for example, involved in current 5G communication it is a variety of
The data format etc. of type, the embodiment of the present invention is it is not limited here.
Specifically, photoelectric conversion device 3 or multiple types, for example, by using the photoelectric conversion in original optical module
Device 3 etc., the embodiment of the present invention is it is not limited here.
It wherein,, can be with other than being converted the electric signal of NRZ format based on the thought in the embodiment of the present invention
The electric signal of extended formatting is converted into preset format, to improve the message transmission rate in various actual conditions.
Wherein, the conversion process that photoelectric conversion device 3 carries out electric signal to optical signal can also be under the control of processor 1
It carries out, the embodiment of the present invention is it is not limited here.
The present invention provides a kind of optical modules, including processor；Format conversion apparatus under the control of a processor will be used for
The electric signal of the non-return to zero code NRZ format received is converted to the electric signal of preset format；Photoelectric conversion device, for that will preset
The electric signal of format exports after being converted to optical signal to optical fiber；Wherein, the transmission rate of the signal of preset format is greater than NRZ format
Signal transmission rate.
As it can be seen that format conversion apparatus can be under the control of a processor by the telecommunications of the NRZ format received in the present invention
The electric signal for number being converted to preset format, after the electric signal of preset format is then converted to optical signal by photoelectric conversion device again
It exports to optical fiber, since the transmission rate of the signal of preset format is greater than the signal of NRZ format, the optical module in the present invention
It enables to the data of preset format to transmit in a fiber, improves communication speed, user experience is preferable.
On the basis of the above embodiments:
Embodiment as one preferred, preset format are PAM4 format.
Specifically, PAM signal is the representative of the popular signal transmission technology after NRZ and multistage modulation technique.NRZ
Signal shows the 1 of digital logic signal, 0 using high and low two kinds of signal level meters, and each clock cycle can transmit the logic of 1bit
Information.PAM4 signal carries out signal transmission using 4 different signal levels, and each clock cycle can transmit the logic of 2bit
Information, i.e., 00,01,10,11.Therefore, under the conditions of same baud rate, PAM4 signal bit rate is 2 times of NRZ signal, is passed
Defeated efficiency doubles, while also can effectively reduce cost.In a same optical-fibre channel, PAM4 modulation technique is due to tool
There is higher message transmission rate, can effectively promote bandwidth utilization efficiency.5G carrying, needs the solution party of big bandwidth low cost
Case, from 4G to upcoming 5G, flow growth is very swift and violent, this undoubtedly can obtain advantage in the competition of 5G solution.With
Earlier generations mobile network compares, and the ability of 5G network will develop by leaps and bounds.In terms of infrastructure, operator should carry out end and arrive
The network architecture at end is transformed, and the resilient infrastructure from access net, convergence net to core net is constructed, and the bandwidth for enhancing its infrastructure expands
Open up flexibility.400GE/200GE/50GE based on single channel 50G PAM4 technology can be adapted to very well 5G to network cost and
The demand of performance is constructed from the optimal solution for accessing, converging to core net.
Certainly, other than PAM4 format, preset format can also be other multiple types, and the embodiment of the present invention is not done herein
It limits.
Embodiment as one preferred, the optical module further include:
Signal processing apparatus 4, for the electric signal for passing through the preset format of format conversion to be carried out default processing, so as to electricity
The more stable transmission of signal.
In view of the electric signal of the preset format by format conversion is insufficient there may be signal strength or there are impurity
Etc. some other problems, the deficiency of signal stabilization may cause if exporting to communication network and being transmitted like this,
Therefore the signal processing apparatus 4 in the embodiment of the present invention can preset the electric signal of the preset format by format conversion
Processing, transmission that can be more stable.
Embodiment as one preferred, presetting processing includes at least one of rectification, filtering and amplification.
Specifically, rectification, filtering and enhanced processing can filter out the impurity in signal well, and make it have foot
Enough intensity, finally being capable of stable transmission in a communication network.
Certainly, other than at least one of rectification, filtering and amplification, default processing can also be other multiple types
Type, the embodiment of the present invention is it is not limited here.
Embodiment as one preferred, format conversion apparatus 2 and signal processing apparatus 4 are DSP (Digital
Signal Processing, digital signal processor 1).
Specifically, DSP has many advantages, such as that stability is high, small in size and long service life.
Certainly, other than DSP, format conversion apparatus 2 and signal processing apparatus 4 can also be respectively other types, this
Inventive embodiments are it is not limited here.
Wherein, the one of value is mentioned that, the optical module in the embodiment of the present invention, can be first by processor in power up
1, which executes the initialization procedure of itself, can pass through GPIO (General Purpose after the completion of processor 1 initializes
Input Output, universal input/output) mouth control DSP load store in EEPROM (Electrically Erasable
Programmable read only memory, with Electrically Erasable Programmable Read-Only Memory) hex image file, for DSP from
Oneself initializes, when processor 1 passes through MDIO (Management Data Input/Output manages data input and output)
After the completion of reading DSP stress state, start to initialize photoelectric conversion device 3, subsequently into normal mode of operation.
Specifically, processor 1 is during executing itself initialization, it can be with the hex mirror image in itself flash memory
Program, and during controlling DSP initialization, it can then be controlled first by the image program write-in EEPROM of DSP
Image program in DSP load EEPROM is initialized.
In addition, the clock apparatus of DSP can be crystal oscillator, processor 1 can control crystal oscillator oscillating condition, to control DSP
Carry out the conversion of data format.
Wherein, processor 1 can be multiple types, such as can be MCU (Microcontroller Unit, microcontroller
Unit) etc., the embodiment of the present invention is it is not limited here.
The optical signal of embodiment as one preferred, the preset format that photoelectric conversion device 3 is also used to receive turns
It is changed to electric signal；
Then format conversion apparatus 2 is also used to that the electric signal of preset format is converted to NRZ format under the control of processor 1
After be sent to corresponding interchanger or router.
Specifically, photoelectric conversion device 3 may be used also when optical module receives the optical signal of preset format from fiber optic network
The optical signal of preset format is converted to electric signal, then format conversion apparatus 2 can also will be pre- under the control of processor 1
If the electric signal of format is sent in corresponding interchanger or router after being converted to NRZ format, two-way number is realized
According to processing.
Certainly, in above process, format conversion apparatus 2 can also be under the control of processor 1 by the electricity of preset format
Signal is converted to the electric signal of extended formatting, is either directly pass-through in corresponding exchanger or router, and the present invention is real
Apply example it is not limited here.
Embodiment as one preferred, photoelectric conversion device 3 include:
Laser diode drive LDD (Laser Diode Drive) 31, for being converted to the electric signal of preset format
Current signal；
Laser 32, the current signal for sending LDD 31 export after being converted to optical signal to optical fiber；
Photodiode 34, for the optical signal received to be converted to current signal；
Trans-impedance amplifier 33, the current signal for sending photodiode 34 are converted to electric signal.
Specifically, LDD 31 has many advantages, such as that structure is simple, the at low cost and service life is long.
Specifically, laser 32, trans-impedance amplifier 33 and photodiode 34 all have structure it is simple, it is small in size, at
The advantages that this low and service life is long.
Certainly, other than the photoelectric conversion device 3 in the embodiment of the present invention, photoelectric conversion device 3 can also be other classes
Type.
Embodiment as one preferred, the optical module further include:
Temperature control equipment 5；
Then processor 1 is also used to control the temperature of temperature control equipment 5 to preset value, so as to optical module safe operation.
In view of optical module is likely to be at outdoor environment, environment temperature it is excessively high or it is too low can be to the normal work of optical module
It has an impact, setting leads to the failure of optical module, and the processor 1 in the embodiment of the present invention can control temperature control equipment 5
Temperature to preset value, wherein processor 1 can control temperature control equipment 5 by D/A converter module and carry out temperature change,
The temperature of the temperature control equipment 5 is acquired by analog-to-digital conversion module simultaneously, and is regarded as the temperature of optical module local environment,
It can be realized certainly using PID (Proportion Integral Differential, PID control parameter) algorithm simultaneously
Dynamic stability the temperature of temperature control equipment 5 is adjusted to preset value.
Wherein, preset value can be the optimum working temperature of the optical module independently set, such as 20 ° etc., and the present invention is implemented
Example is it is not limited here.
Embodiment as one preferred, temperature control equipment 5 are TEC (Thermo Electric Cooler, semiconductor
Refrigerator).
Specifically, TEC has many advantages, such as that small in size, price is low and the service life is long.
Certainly, other than TEC, temperature control equipment 5 can also be other types, and the embodiment of the present invention does not limit herein
It is fixed.
The present invention also provides a kind of communication systems, including the optical module in such as previous embodiment.
The embodiment of aforementioned optical module is please referred to for the introduction of communication system provided in an embodiment of the present invention, the present invention is real
Applying example, details are not described herein.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.It should also be noted that, in this theory
In bright book, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that including
The process, method, article or equipment of a series of elements not only includes those elements, but also its including being not explicitly listed
His element, or further include for elements inherent to such a process, method, article, or device.What is do not limited more
In the case of, the element that is limited by sentence "including a ...", it is not excluded that include the process, method of the element, article or
There is also other identical elements in person's equipment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of optical module characterized by comprising
Processor；
Format conversion apparatus, for turning the electric signal of the non-return to zero code NRZ format received under the control of the processor
It is changed to the electric signal of preset format；
Photoelectric conversion device, for exporting after the electric signal of the preset format is converted to optical signal to optical fiber；
Wherein, the transmission rate of the signal of the preset format is greater than the transmission rate of the signal of the NRZ format.
2. optical module according to claim 1, which is characterized in that the preset format is the modulation of four level pulse amplitudes
PAM4 format.
3. optical module according to claim 1, which is characterized in that the optical module further include:
Signal processing apparatus, for the electric signal for passing through the preset format of format conversion to be carried out default processing, with
Toilet states the more stable transmission of electric signal.
4. optical module according to claim 3, which is characterized in that the default processing includes rectification, filtering and amplification
At least one of.
5. optical module according to claim 4, which is characterized in that the format conversion apparatus and the signal processing device
Setting is digital signal processor DSP.
6. optical module according to claim 5, which is characterized in that the photoelectric conversion device is also used to the institute that will be received
The optical signal for stating preset format is converted to electric signal；
Then the format conversion apparatus is also used to be converted to the electric signal of the preset format under the control of the processor
Corresponding interchanger or router are sent to after the NRZ format.
7. optical module according to claim 6, which is characterized in that the photoelectric conversion device includes:
Laser diode drive LDD, for the electric signal of the preset format to be converted to current signal；
Laser, the current signal for sending the LDD export after being converted to optical signal to optical fiber；
Photodiode, for the optical signal received to be converted to current signal；
Trans-impedance amplifier, the current signal for sending the photodiode are converted to electric signal.
8. optical module according to any one of claims 1 to 7, which is characterized in that the optical module further include:
Temperature control equipment；
The temperature that then processor is also used to control the temperature control equipment is transported to preset value so that the optical module is safe
Row.
9. optical module according to claim 8, which is characterized in that the temperature control equipment is semiconductor cooler TEC.
10. a kind of communication system, which is characterized in that including such as described in any item optical modules of claim 1-9.
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| CN110401490A (en) * | 2019-08-02 | 2019-11-01 | 东莞铭普光磁股份有限公司 | Support the level shifting circuit and level conversion method of MDIO communication |
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| 马云等: "基于TMS320C6678的国产DSP操作系统引导程序设计", 《电子技术与软件工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401490A (en) * | 2019-08-02 | 2019-11-01 | 东莞铭普光磁股份有限公司 | Support the level shifting circuit and level conversion method of MDIO communication |
| CN110401490B (en) * | 2019-08-02 | 2020-11-03 | 东莞铭普光磁股份有限公司 | Level conversion circuit supporting MDIO communication, level conversion method and PAM optical module |
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