CN109547113A - The transmission method and Transmission system of DC reference signal - Google Patents
The transmission method and Transmission system of DC reference signal Download PDFInfo
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- CN109547113A CN109547113A CN201910055669.3A CN201910055669A CN109547113A CN 109547113 A CN109547113 A CN 109547113A CN 201910055669 A CN201910055669 A CN 201910055669A CN 109547113 A CN109547113 A CN 109547113A
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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
- H04B10/516—Details of coding or modulation
- H04B10/54—Intensity modulation
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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
- H04B10/564—Power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
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Abstract
The invention discloses a kind of transmission method of DC reference signal and Transmission systems, wherein Transmission system includes: electrooptic conversion module, for the multi-channel DC reference signal of input to be converted to the DC reference optical signal of multichannel different wave length, according to the current or voltage intensity of multi-channel DC reference signal, the optical power for adjusting the DC reference optical signal of output, so that the optical power is able to reflect the current or voltage intensity of input direct-current reference signal；Transmission fiber, one end are connected with electrooptic conversion module, for simultaneous transmission multichannel different wave length DC reference optical signal and mutually it is noiseless；And photoelectric conversion module, it is connected with the other end of transmission fiber, the DC reference optical signal of multichannel different wave length is converted into photoelectric current and is exported.While having backward compatibility, guaranteeing signal quality, transmission line integrated level is significantly increased, realizes the transmission of the high-precision, high integration of multi-channel DC reference signal, and transmit with good stability.
Description
Technical field
The disclosure belongs to automation control and technical field of photo communication, be related to a kind of DC reference signal transmission method and
Transmission system.
Background technique
DC reference signal is the basic resources in analog circuit.Have in accurate measurement etc. to signal accuracy, noise suppressed
The field of strict demand, high-precision DC reference signal have the function of key.In precision measurement apparatus, DC reference letter
It number can directly generate, can also be inputted by external dc reference signal source in a device.Direct current is directly generated in a device
Reference signal is limited to the reasons such as volume, power consumption, design complexities, is often extremely difficult to high-precision.Precision measurement apparatus can also
Can be installed in low temperature cavity, vacuum chamber it is medium, can not be in internal integrated DC reference signal source, therefore, high-precision direct current base
Calibration signal needs generate in autonomous device, and are transferred in use device.Meanwhile a DC reference signal source can transmit
To more precision measurement apparatus or it is distributed in the device of different location.Therefore, have and largely need to transmit High-accuracy direct current benchmark letter
Number application scenarios, such as in automation control area, especially in terms of quantum communications and quantum calculation, Superconducting Quantum is calculated
It needs to use a large amount of DC reference signal channel as bias voltage control, in order to control the superconduction amount comprising 100 quantum bits
Sub- computing chip will need over 100 DC reference signal channels to be transmitted.
In the prior art, when needing to transmit high-precision DC reference signal between two instrument and equipments, often make
Use various types of coaxial cables as transmission line, to inhibit differential mode noise.
But traditional DC reference signal transmission is realized using cable, is interfered vulnerable to electromagnetic environment, earth magnetism etc., transmission essence
Degree is difficult to improve.
Secondly, be easily achieved the transmission of a small amount of a few road DC reference signals using coaxial cable, however, when required straight
When flowing the increase of reference signal port number, coaxial cable scheme is faced with significant limitation.On the one hand, sufficiently small in order to guarantee to have
Resistance, the effective sectional area of coaxial cable has certain requirement, while insulating layer also will increase sectional area；On the other hand, together
The connector of shaft cable often has biggish volume, these factors limit the integrated level of coaxial cable scheme.For example, superconduction amount
Son, which calculates, needs more than 100 DC reference signal channels to be transmitted, and when using coaxial cable scheme, this will be occupied
Huge difficulty is brought for the installation and maintenance of whole equipment in a large amount of space of dilution refrigeration machine.In addition, needing to install some
When precision measurement apparatus and other devices in low temperature cavity, vacuum chamber carry out DC reference signal transmission, using a large amount of coaxial
Transmission line of the cable as DC reference voltage, it will bring a degree of leakage heat for low temperature cavity.For example, quantum calculation and amount
The fields such as son communication usually need to place sample at low temperature to reduce thermal noise, such as in Superconducting Quantum computing chip, super
It leads under the application scenarios such as nanowire single photon detector, if using a large amount of coaxial cables as the transmission line of DC reference voltage,
A degree of leakage heat will be brought for low temperature cavity, causes the raising of thermal noise, or even influences sample under refrigeration machine or low temperature
It works normally.
Therefore, for the transmission of DC reference signal, need to propose a kind of high-precision, it is integrated, not vulnerable to electromagnetic environment,
The interference such as earth magnetism, and can reduce the transmission method of leakage heat in low temperature cavity application scenarios.
Summary of the invention
(1) technical problems to be solved
Present disclose provides a kind of transmission method of DC reference signal and Transmission systems, at least partly to solve the above institute
The technical issues of proposition.
(2) technical solution
According to one aspect of the disclosure, a kind of Transmission system of DC reference signal is provided, comprising: electro-optic conversion mould
Block is straight according to multichannel for the multi-channel DC reference signal of input to be converted to the DC reference optical signal of multichannel different wave length
The current or voltage intensity for flowing reference signal, adjusts the optical power of the DC reference optical signal of output, enables the optical power
Reflect the current or voltage intensity of input direct-current reference signal；Transmission fiber, one end are connected with electrooptic conversion module, for same
When transmission multichannel different wave length DC reference optical signal and mutually it is noiseless；And photoelectric conversion module, with transmission fiber
The other end is connected, and the DC reference optical signal of multichannel different wave length is converted to photoelectric current and is exported.
In some embodiments of the present disclosure, the current or voltage intensity of optical power and input direct-current reference signal is linear
Relationship.
In some embodiments of the present disclosure, electrooptic conversion module swashs for the continuous light of the adjustable high stability of an output power
Light device, the continuous light laser of the high stability includes: laser, generates laser；Light intensity modulator, the laser that laser is generated
Carry out intensity modulated；Beam splitter isolates the laser that a part of laser generates；Optical detector measures the laser isolated
Optical power obtains the measurement result of the optical power；And feed circuit, it is connected with optical detector and light intensity modulator, optical detection
The measurement result for the optical power that device obtains inputs the feed circuit, the feed circuit compare input optical power measurement result and
DC reference signal feeds back to light intensity modulator, drives the light intensity modulator to export and stablizes optical power.
In some embodiments of the present disclosure, photoelectric conversion module is photoelectricity of the work under guided optical mode or photovoltaic mode
Diode.
In some embodiments of the present disclosure, transmission fiber in use of wavelength division multiplexing, realize more by You Yigen transmission fiber
While the DC reference optical signal of road different wave length, without interfering with each other transmission.
In some embodiments of the present disclosure, transmission fiber is single mode optical fiber or polarization maintaining optical fibre.
A kind of transmission method of DC reference signal another aspect of the present disclosure provides, comprising: by input
Multi-channel DC reference signal is converted to the DC reference optical signal of multichannel different wave length, according to the electric current of multi-channel DC reference signal
Or voltage strength, the optical power of the DC reference optical signal of output is adjusted, so that the optical power is able to reflect input direct-current benchmark
The current or voltage intensity of signal；DC reference optical signal and mutual nothing using transmission fiber simultaneous transmission multichannel different wave length
Interference；And the DC reference optical signal of multichannel different wave length is converted into photoelectric current and is exported.
In some embodiments of the present disclosure, transmission fiber in use of wavelength division multiplexing, realize more by You Yigen transmission fiber
While the DC reference optical signal of road different wave length, without interfering with each other transmission.
In some embodiments of the present disclosure, the current or voltage intensity of optical power and input direct-current reference signal is linear
Relationship.
In some embodiments of the present disclosure, the multi-channel DC reference signal of input is converted to using electrooptic conversion module
The DC reference optical signal of multichannel different wave length, the electrooptic conversion module swash for the continuous light of the adjustable high stability of an output power
Light device；And/or the DC reference optical signal of multichannel different wave length is converted to by photoelectric current using photoelectric conversion module and is exported,
The photoelectric conversion module is photodiode of the work under guided optical mode or photovoltaic mode.
(3) beneficial effect
It can be seen from the above technical proposal that the transmission method and Transmission system of the DC reference signal that the disclosure provides,
It has the advantages that
(1) Transmission system includes electrooptic conversion module, transmission fiber and photoelectric conversion module, by multi-channel DC base
Calibration signal is transmitted by the DC reference optical signal that electrooptic conversion module is converted to multichannel different wave length along transmission fiber,
And the DC reference optical signal of multichannel different wave length is converted to by photoelectric current by photoelectric conversion module and is exported；Transmission fiber
As the optical signal carrier after the corresponding conversion of DC reference signal, can the light of the multiple wavelength of simultaneous transmission and mutually noiseless,
While having backward compatibility, guarantee signal quality, transmission line integrated level is significantly increased, realizes the multichannel of DC reference signal
Transmission, by wavelength-division multiplex technique, an optical fiber can be used for transmitting pole multi-channel DC reference signal, realize multi-channel DC benchmark
The transmission of the high-precision, high integration of signal, and transmit with good stability, it is not interfered vulnerable to electromagnetic environment, earth magnetism etc.；
(2) photoelectric conversion module is the photodiode worked under guided optical mode or photovoltaic mode, wherein photovoltaic mode
It does not need additionally to power, power consumption is lower, in the environment of being suitable for cryostat, dilution refrigeration machine etc. to sensitive power consumption, low
Warm chamber application scenarios can reduce leakage heat；
(3) pass through while using electrooptic conversion module and photoelectric conversion module respectively as between electric signal and optical signal
Interface, the completely compatible coaxial cable transmission line scheme of electric connector, replaces the Transmission system of the disclosure directly coaxially
Cable version, does not need to carry out other conversions, convenient and have eurytopicity.
Detailed description of the invention
Fig. 1 is the Transmission system of the DC reference signal according to shown in one embodiment of the disclosure.
Fig. 2 is the scheme schematic diagram for realizing DC reference signal transmission using coaxial cable in the prior art.
Fig. 3 is the side realized in the electrooptic conversion module according to shown in one embodiment of the disclosure using light power stabilising technology
Case schematic diagram.
Fig. 4 is that (a) guided optical mode or (b) photovoltaic mould are used in the photoelectric conversion module according to shown in one embodiment of the disclosure
The scheme schematic diagram that photodiode under formula is realized.
Fig. 5 is by wavelength-division multiplex technique according to shown in one embodiment of the disclosure, by the direct current base of multichannel different wave length
Quasi-optical signal merging is transmitted in an optical fiber, and is finally separated to again and is respectively converted into photoelectric current output in different channels
Schematic diagram.
Fig. 6 is the transmission method flow chart of the DC reference signal according to shown in one embodiment of the disclosure.
[symbol description]
The first electric connector of 10-；
20- electrooptic conversion module；
201- laser；202- light intensity modulator；
203- beam splitter；204- optical detector；
205- feed circuit；
30- transmission fiber；40- photoelectric conversion module；
The second electric connector of 50-.
Specific embodiment
Present disclose provides a kind of transmission method of DC reference signal and Transmission system, it has been put forward for the first time real using optical fiber
The transmission of existing DC reference signal, by wavelength-division multiplex technique, an optical fiber can be used for transmitting pole multi-channel DC reference signal,
While having backward compatibility, guaranteeing signal quality, transmission line integrated level is significantly increased, realizes multi-channel DC reference signal
High-precision, high integration transmission, and transmit have good stability, not vulnerable to electromagnetic environment, earth magnetism etc. interfere；Low
Warm chamber application scenarios can reduce leakage heat；The completely compatible coaxial cable transmission line scheme of electric connector can be replaced directly coaxial
Cable version, does not need to carry out other conversions, convenient and have eurytopicity.
For the purposes, technical schemes and advantages of the disclosure are more clearly understood, below in conjunction with specific embodiment, and reference
The disclosure is further described in attached drawing.
Optical fiber is now widely used as transmission line in the communications field, but the signal transmitted is digital signal, for leading to
Letter.Use optical fiber to have no as the research of transmission line DC reference signal to have been reported that.The disclosure has been put forward for the first time a kind of benefit
It uses optical fiber as the scheme of DC reference signal transmission line, realizes high-precision, the biography of high integration of multi-channel DC reference signal
It is defeated, and transmit have good stability, not vulnerable to electromagnetic environment, earth magnetism etc. interfere, and low temperature cavity application scenarios can
Reduce leakage heat.
In first exemplary embodiment of the disclosure, a kind of Transmission system of DC reference signal is proposed.
Fig. 1 is the Transmission system of the DC reference signal according to shown in one embodiment of the disclosure.
Shown in referring to Fig.1, the Transmission system of the DC reference signal of the disclosure, comprising: electrooptic conversion module 20, being used for will
The multi-channel DC reference signal of input is converted to the DC reference optical signal of multichannel different wave length, according to multi-channel DC reference signal
Current or voltage intensity, the optical power of the DC reference optical signal of output is adjusted, so as to be able to reflect input straight for the optical power
Flow the current or voltage intensity of reference signal；Transmission fiber 30, one end are connected with electrooptic conversion module 20, are used for simultaneous transmission
The DC reference optical signal of multichannel different wave length and mutually it is noiseless；And photoelectric conversion module 40, it is another with transmission fiber
End is connected, and the DC reference optical signal of multichannel different wave length is converted to photoelectric current and is exported.
Illustrate the various pieces of the Transmission system of the DC reference signal of the present embodiment referring to Fig. 2~Fig. 4 and is somebody's turn to do
The beneficial effect of Transmission system.
Shown in referring to Fig.1, in the present embodiment, electrooptic conversion module 20 passes through the first electric connector 10 and a first device
(not illustrating in figure) connection；Photoelectric conversion module 40 passes through the second electric connector 50 and a second device (not illustrating in figure)
Connection realizes multi-channel DC reference signal from first device to transmission of the second device.Fig. 2 is to use coaxial electrical in the prior art
Cable realizes the scheme schematic diagram of DC reference signal transmission.Referring to shown in Fig. 2, in the prior art, by using coaxial cable and
The connector at its both ends realizes the transmission of DC reference signal, and the Transmission system of the DC reference signal of the disclosure passes through while making
With electrooptic conversion module 20 and photoelectric conversion module 40 respectively as the interface between electric signal and optical signal, the first electric connector
10 and the completely compatible coaxial cable transmission line scheme of the second electric connector 50, so that the transmission system of the DC reference signal of the disclosure
System can directly replace coaxial cable scheme, not need to carry out other conversions, convenient and have eurytopicity.
Fig. 3 is the side realized in the electrooptic conversion module according to shown in one embodiment of the disclosure using light power stabilising technology
Case schematic diagram.
Electrooptic conversion module 20, for the multi-channel DC reference signal of input to be converted to the direct current base of multichannel different wave length
Quasi-optical signal adjusts the light function of the DC reference optical signal of output according to the current or voltage intensity of multi-channel DC reference signal
Rate, so that the optical power is able to reflect the current or voltage intensity of input direct-current reference signal, generally linear relationship.
In the present embodiment, electrooptic conversion module 20 is a continuous light laser of the adjustable high stability of output power, is made
Realized with common light power stabilising technology, the continuous light laser of the high stability includes: laser 201 generates laser；Light
Strong modulator 202 carries out intensity modulated to the laser that laser 201 generates；Beam splitter 203 isolates a part of laser 201
The laser of generation；Optical detector 204, the optical power for the laser isolated described in measurement, obtains the measurement result of the optical power；With
And feed circuit 205, it is connected with optical detector 204 and light intensity modulator 202, the measurement for the optical power that optical detector 204 obtains
As a result the feed circuit 205 is inputted, which compares the measurement result and DC reference signal of the optical power of input,
Light intensity modulator 202 is fed back to, drives the light intensity modulator 202 to export and stablizes optical power.
Referring to shown in Fig. 3, light power stabilising technology is as follows: separating what a part of laser 201 generated using beam splitter 203
Laser simultaneously measures its optical power using optical detector 204, and measuring light power result is by input feedback circuit 205, feed circuit 205
By comparing the measuring light power result and DC reference signal of input, driving light intensity modulator 202 is for exporting stable light function
Rate.The stabilization optical power of the output is able to reflect the current or voltage intensity of input direct-current reference signal, and generally linearisation is closed
System.
Fig. 4 is that (a) guided optical mode or (b) photovoltaic mould are used in the photoelectric conversion module according to shown in one embodiment of the disclosure
The scheme schematic diagram that photodiode under formula is realized.
The DC reference optical signal for the multichannel different wave length that transmission fiber 30 transmits is converted to light by photoelectric conversion module 40
Electric current is exported.
Shown in referring to (a) in Fig. 4 or (b), in the present embodiment, photoelectric conversion module 40 be work in (a) guided optical mode or
(b) photodiode under photovoltaic mode can export photoelectric current relevant to optical power.
Preferably, photoelectric conversion module 40 is photodiode of the work under photovoltaic mode, since photovoltaic mode is not required to
It additionally to power, power consumption is lower, in the environment of being suitable for cryostat, dilution refrigeration machine etc. to sensitive power consumption, in low temperature cavity
Application scenarios can reduce leakage heat.
Fig. 5 is by wavelength-division multiplex technique according to shown in one embodiment of the disclosure, by the direct current base of multichannel different wave length
Quasi-optical signal merging is transmitted in an optical fiber, and is finally separated to again and is respectively converted into photoelectric current output in different channels
Schematic diagram.
Referring to Figure 5, transmission fiber 30 for simultaneous transmission multichannel different wave length DC reference optical signal and mutually
It is noiseless.In the present embodiment, in use of wavelength division multiplexing, You Yigen transmission fiber 30 realizes the DC reference of multichannel different wave length
While optical signal, without interfering with each other transmission.
Have mature wavelength-division multiplex technique in communication band, wavelength-division multiplex technique be by a series of carrying informations but wavelength not
Same optical signal synthesis is a branch of, transmits along simple optical fiber, uses some way again in receiving end, by the light of each different wave length
The separated communication technology of signal.In the present embodiment, transmission fiber 30 in use of wavelength division multiplexing, draw by interval of 100GHz by example
Point, such as 150 wave bands can be divided altogether within the scope of S-band, C-band, the total 120nm of L-band.Therefore, multiple by wavelength-division
With technology, referring to Figure 5, an optical fiber can be used for the pole multi-channel DC reference signal of 1~N of transmission channel, can be into one
Step reduces transmission line quantity, so that it is integrated that transmission line be significantly increased while having backward compatibility, guaranteeing signal quality
Degree realizes the transmission of the high-precision, high integration of multi-channel DC reference signal.Certainly, each biography in transmission fiber in the disclosure
The division of defeated band of channles can carry out adaptability setting according to actual needs, be not limited to shown in the present embodiment.
In the present embodiment, transmission fiber 30 can be single mode optical fiber, have and stablize transmittability over long distances, be also possible to protect
Polarisation is fine, can provide higher stability in short-distance transmission.
In second exemplary embodiment of the disclosure, a kind of transmission method of DC reference signal is provided.
Fig. 6 is the transmission method flow chart of the DC reference signal according to shown in one embodiment of the disclosure.
Referring to shown in Fig. 6, the transmission method of the DC reference signal of the disclosure, comprising:
Step S21: the multi-channel DC reference signal of input is converted to the DC reference optical signal of multichannel different wave length, root
According to the current or voltage intensity of multi-channel DC reference signal, the optical power of the DC reference optical signal of output is adjusted, so that the light
Power is able to reflect the current or voltage intensity of input direct-current reference signal；
In the present embodiment, the multi-channel DC reference signal of input is converted into multichannel difference wave using electrooptic conversion module 20
Long DC reference optical signal adjusts the DC reference light of output according to the current or voltage intensity of multi-channel DC reference signal
The optical power of signal, so that the optical power is able to reflect the current or voltage intensity of input direct-current reference signal.
In the present embodiment, the current or voltage intensity of optical power and input direct-current reference signal is generally linear relationship.
Step S22: using transmission fiber simultaneous transmission multichannel different wave length DC reference optical signal and mutually it is noiseless；
In the present embodiment, referring to Figure 5, transmission fiber in use of wavelength division multiplexing, is realized using a transmission fiber
While the DC reference optical signal of multichannel different wave length, without interfering with each other transmission；It is divided by interval of 100GHz, such as in S
150 wave bands can be divided altogether within the scope of the total 120nm of wave band, C-band, L-band, an optical fiber can be used for transmission channel 1
The pole multi-channel DC reference signal of~N.
In the present embodiment, transmission fiber 30 can be single mode optical fiber, have and stablize transmittability over long distances, be also possible to protect
Polarisation is fine, can provide higher stability in short-distance transmission.
Step S23: the DC reference optical signal of multichannel different wave length is converted into photoelectric current and is exported；
In the present embodiment, using photoelectric conversion module 40, the direct current base for the multichannel different wave length that transmission fiber 30 is transmitted
Quasi-optical signal is converted to photoelectric current and is exported.
In conclusion being put forward for the first time present disclose provides a kind of transmission method of DC reference signal and Transmission system
The transmission of DC reference signal is realized using optical fiber, which turns comprising electrooptic conversion module, transmission fiber and photoelectricity
Block is changed the mold, multi-channel DC reference signal is converted to the DC reference optical signal edge of multichannel different wave length by electrooptic conversion module
Transmission fiber transmitted, and the DC reference optical signal of multichannel different wave length is converted to by photoelectricity by photoelectric conversion module
Stream is exported；Transmission fiber, can the multiple wavelength of simultaneous transmission as the optical signal carrier after the corresponding conversion of DC reference signal
Light and mutually it is noiseless, realize the multiplexing of DC reference signal, by wavelength-division multiplex technique, an optical fiber can be used for
Pole multi-channel DC reference signal is transmitted, while having backward compatibility, guaranteeing signal quality, it is integrated that transmission line is significantly increased
Degree, realize multi-channel DC reference signal high-precision, high integration transmission, and transmit have good stability, not vulnerable to
The interference such as electromagnetic environment, earth magnetism；Photoelectric conversion module is the photodiode worked under guided optical mode or photovoltaic mode, wherein
Photovoltaic mode does not need additionally to power, and power consumption is lower, suitable for cryostat, dilution refrigeration machine etc. to the environment of sensitive power consumption
Under, it can reduce leakage heat in low temperature cavity application scenarios；By being made respectively using electrooptic conversion module and photoelectric conversion module simultaneously
Interface between electric signal and optical signal, the completely compatible coaxial cable transmission line scheme of electric connector, so that the biography of the disclosure
Defeated system can directly replace coaxial cable scheme, not need to carry out other conversions, convenient and have eurytopicity.
Through attached drawing, identical element is indicated by same or similar appended drawing reference.It may cause to the disclosure
When understanding causes to obscure, conventional structure or construction will be omitted.And the shape and size of each component do not reflect actual size in figure
And ratio, and only illustrate the content of the embodiment of the present disclosure.It, should not will be between parentheses any in addition, in the claims
Reference symbol is configured to limitations on claims.
It unless there are known entitled phase otherwise anticipates, the numerical parameter in this specification and appended claims is approximation, energy
Enough bases pass through the resulting required characteristic changing of content of this disclosure.Specifically, all be used in specification and claim
The middle content for indicating composition, the number of reaction condition etc., it is thus understood that repaired by the term of " about " in all situations
Decorations.Under normal circumstances, the meaning expressed refers to include by specific quantity ± 10% variation in some embodiments, some
± 5% variation in embodiment, ± 1% variation in some embodiments, in some embodiments ± 0.5% variation.
Furthermore word "comprising" or " comprising " do not exclude the presence of element or step not listed in the claims.Positioned at member
Word "a" or "an" before part does not exclude the presence of multiple such elements.
The word of ordinal number such as " first ", " second ", " third " etc. used in specification and claim, with modification
Corresponding element, itself is not meant to that the element has any ordinal number, does not also represent the suitable of a certain element and another element
Sequence in sequence or manufacturing method, the use of those ordinal numbers are only used to enable an element and another tool with certain name
Clear differentiation can be made by having the element of identical name.
Particular embodiments described above has carried out further in detail the purpose of the disclosure, technical scheme and beneficial effects
Describe in detail it is bright, it is all it should be understood that be not limited to the disclosure the foregoing is merely the specific embodiment of the disclosure
Within the spirit and principle of the disclosure, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the disclosure
Within the scope of shield.
Claims (10)
1. a kind of Transmission system of DC reference signal, comprising:
Electrooptic conversion module, the DC reference light for the multi-channel DC reference signal of input to be converted to multichannel different wave length are believed
Number, according to the current or voltage intensity of multi-channel DC reference signal, the optical power of the DC reference optical signal of output is adjusted, so that
The optical power is able to reflect the current or voltage intensity of input direct-current reference signal；
Transmission fiber, one end are connected with electrooptic conversion module, and the DC reference light for simultaneous transmission multichannel different wave length is believed
Number and mutually it is noiseless；And
Photoelectric conversion module is connected with the other end of transmission fiber, and the DC reference optical signal of multichannel different wave length is converted to
Photoelectric current is exported.
2. the Transmission system of DC reference signal according to claim 1, wherein the optical power and input direct-current benchmark
The current or voltage intensity of signal is linear relationship.
3. the Transmission system of DC reference signal according to claim 1, wherein the electrooptic conversion module is an output
The continuous light laser of the high stability of power adjustable, the continuous light laser of the high stability includes:
Laser generates laser；
Light intensity modulator carries out intensity modulated to the laser that laser generates；
Beam splitter isolates the laser that a part of laser generates；
Optical detector, the optical power for the laser isolated described in measurement, obtains the measurement result of the optical power；And
Feed circuit is connected with optical detector and light intensity modulator, and the measurement result input for the optical power that optical detector obtains should
Feed circuit, the feed circuit compare the measurement result and DC reference signal of the optical power of input, feed back to light intensity modulator,
It drives the light intensity modulator to export and stablizes optical power.
4. the Transmission system of DC reference signal according to claim 1, wherein the photoelectric conversion module is that work exists
Photodiode under guided optical mode or photovoltaic mode.
5. the Transmission system of DC reference signal according to claim 1, wherein the transmission fiber uses wavelength-division multiplex
Technology, You Yigen transmission fiber is realized while the DC reference optical signal of multichannel different wave length, nothing interferes with each other transmission.
6. the Transmission system of DC reference signal according to claim 1, wherein the transmission fiber be single mode optical fiber or
Polarization maintaining optical fibre.
7. a kind of transmission method of DC reference signal, comprising:
The DC reference optical signal that the multi-channel DC reference signal of input is converted to multichannel different wave length, according to multi-channel DC base
The current or voltage intensity of calibration signal adjusts the optical power of the DC reference optical signal of output, so that the optical power is able to reflect
The current or voltage intensity of input direct-current reference signal；
Using transmission fiber simultaneous transmission multichannel different wave length DC reference optical signal and mutually it is noiseless；And
The DC reference optical signal of multichannel different wave length is converted to photoelectric current to export.
8. the transmission method of DC reference signal according to claim 7, wherein the transmission fiber uses wavelength-division multiplex
Technology, You Yigen transmission fiber is realized while the DC reference optical signal of multichannel different wave length, nothing interferes with each other transmission.
9. the transmission method of DC reference signal according to claim 7, wherein the optical power and input direct-current benchmark
The current or voltage intensity of signal is linear relationship.
10. the transmission method of DC reference signal according to any one of claims 7 to 9, wherein
The DC reference light that the multi-channel DC reference signal of input is converted to multichannel different wave length is believed using electrooptic conversion module
Number, the electrooptic conversion module is the continuous light laser of the adjustable high stability of an output power；And/or
The DC reference optical signal of multichannel different wave length is converted to photoelectric current using photoelectric conversion module to export, the light
Electric conversion module is photodiode of the work under guided optical mode or photovoltaic mode.
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