CN110021870A - A kind of implementation method of soliton amplifier - Google Patents
A kind of implementation method of soliton amplifier Download PDFInfo
- Publication number
- CN110021870A CN110021870A CN201910191532.0A CN201910191532A CN110021870A CN 110021870 A CN110021870 A CN 110021870A CN 201910191532 A CN201910191532 A CN 201910191532A CN 110021870 A CN110021870 A CN 110021870A
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- China
- Prior art keywords
- soliton
- signal
- amplifier
- light
- fiber
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/35—Non-linear optics
- G02F1/3511—Self-focusing or self-trapping of light; Light-induced birefringence; Induced optical Kerr-effect
- G02F1/3513—Soliton propagation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06725—Fibre characterized by a specific dispersion, e.g. for pulse shaping in soliton lasers or for dispersion compensating [DCF]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1608—Solid materials characterised by an active (lasing) ion rare earth erbium
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optical Communication System (AREA)
- Lasers (AREA)
Abstract
The present invention relates to amplifier technique fields, in particular a kind of implementation method of soliton amplifier, it is coupled with signal light by coupler using light activated soliton signal is pumped, generate soliton signal, soliton signal, as main media, realizes optical signal amplification by of length no more than 300 meters of Er-doped fiber.The present invention can exempt conventional fiber optic communication technology using erbium-doped fiber amplifier and extend repeater span in the electric light transformation of relay station progress light one, conventional fiber optic communication is made to reach a new high.Very important effect is played to the development for pushing dense wave division multipurpose, frequency division multiplexing, soliton optical fiber communication, optical fiber local network and fiber broadband integrated business data network.
Description
Technical field
The present invention relates to amplifier technique field, specially a kind of implementation method of soliton amplifier.
Background technique
In addition current active light soliton am plify device, need to power, be unable to complete remote communication；And come into operation
In conventional fiber optic communication system based on linear optics principle, since dispersion is with the presence of fibre loss, pulse amplitude meeting
Reduce, while waveform can also broaden, to limit the transmission range and transmission capacity of system.
Specifically, since soliton uses full photosystem, optical soliton communication also has the reduction bit error rate, reduces cost,
The complexity of reduction system receives the advantages that system is simpler.But from soliton communication, presently, there are following disadvantages: soliton
The requirement of transmission is fully achieved in the amplifying technique used before communication not yet, using active amplifying technique, exist power supply it is difficult,
It is at high cost, signal amplification ineffective；Soliton is after activated amplifier, and there are the chromatic dispersion problems of soliton, to draw
Play the decaying of signal；The amplification of soliton, another problem that exist is that centre frequency is detuning, the detuning of centre frequency can cause
Such issues that noise of signal, never effective method solves before.
Summary of the invention
The purpose of the present invention is to provide a kind of implementation methods of soliton amplifier, to solve to mention in above-mentioned background technique
Out the problem of.
To achieve the above object, the invention provides the following technical scheme:
A kind of implementation method of soliton amplifier passes through coupling with signal light using light activated soliton signal is pumped
Device coupling, generates soliton signal, and soliton signal passes through of length no more than 300 meters of Er-doped fiber as main media, in fact
Existing optical signal amplification.
Further, the Er-doped fiber be 300 meters, behind connect 200-300 meters of silica fibres.
Further, the silica fibre is single-mode quartz optical fibers.
Further, the material dispersion and waveguide dispersion of the single-mode quartz optical fibers is equal in magnitude, and total dispersion is zero.
Further, the soliton signal is by entering Er-doped fiber after sliding filter.
Compared with prior art, the beneficial effects of the present invention are:
The soliton amplifier that the present invention designs allows soliton communication really to put into application；In practical applications, nothing is utilized
The telecommunication of soliton may be implemented without in addition power supply in source soliton amplifier.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of soliton signal amplifier of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention 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 present invention, 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.
In the description of the present invention, it should be noted that term " up/down end ", "inner", "outside" " front end ", " rear end ",
The orientation or positional relationship of the instructions such as " both ends ", " one end ", " other end " is to be based on the orientation or positional relationship shown in the drawings, only
It is that for the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " the
Two " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set
Set/be arranged with ", " socket ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, being also possible to can
Dismantling connection, or be integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also pass through
Intermediary is indirectly connected, and can be the connection inside two elements.For the ordinary skill in the art, can have
Body situation understands the concrete meaning of above-mentioned term in the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution:
A kind of implementation method of soliton amplifier is produced using light activated soliton signal is pumped with signal optical coupling
Raw stronger soliton signal, using special material Er-doped fiber as the main media of Propagation of Soliton, Er-doped fiber away from
From control within 300 meters, the purpose of optical signal amplification can achieve.
Fiber amplifier of the invention, divide three parts: first is soliton signal amplifier；Second is light compensation；The
Third is that light filters.
The photon energy of incident optical signal is equivalent to the energy difference between ground state and metastable state, i.e. its optical wavelength and above-mentioned spoke
The wavelength for penetrating light is identical, it will cause by ground state → metastable absorptive transition simultaneously and is jumped by the transmitting of metastable state → ground state
Move, absorptive transition absorb luminous energy, transmitting transition emit luminous energy, absorb and transmitting luminous energy size respectively with ground state and metastable grain
Sub- density is directly proportional.Due to the reason of population inversion, total effect be transmitting luminous energy be more than absorb luminous energy, this just make into
Light enhancing is penetrated, to obtain light amplification.
When not pumping light action, Er3+The energy state of ion is ground state；After absorbing pump energy, Er3+Just it is in
Higher-energy state, i.e., by ground state transition to excitation state.It is lower by being transitioned into rapidly since the service life in the upper state is very short
Excitation state, Er3+Service life in excitation state is much longer, referred to as metastable state.Work as Er3+Base is returned to from metastable excitation state transition
When state, extra energy conversion is fluorescent radiation, and the wavelength of radiant light is determined by the energy level difference of metastable state and ground state.?
On 1550nm wave band, in the case where pumping source constantly acts on, the Er in metastable excitation state3+Constantly accumulation, quantity can be more than still to locate
In the number of ions of ground state.When the population on upper state is more than the population in lower state, population inversion state is reached.
Light amplification effect is just produced in this state.
In optical fiber transmission process, the case where having material dispersion, Dispersion Limitation bandwidth of an optical fiber-distance product value.Color
Scattered bigger, bandwidth-distance product in optical fiber is smaller, and at transmission range certain (distance is determined by optical fiber attenuation), bandwidth is just
Smaller, the size of bandwidth determines the size of transport information capacity.
300 meters of silica fibres are connect behind the Er-doped fiber mixed in the present invention using 300 meters, solve the problems, such as that light compensates.
Single-mode quartz optical fibers are used in the present invention, only one basic mode of leaflet, so only material dispersion and waveguide dispersion, does not have mode color
It dissipates.Silica single mode optical fiber, zero material dispersion wavelength is at 1.27 μm, near 1.31 mum wavelengths, material dispersion and waveguide color
Scattered is equal in magnitude, and symbol makes total dispersion zero of single mode optical fiber, which just becomes common on the contrary, the two is just offset
The zero-dispersion wavelength of single mode optical fiber.
In Transmission system without filtering control, square, the Yao Biyou directly proportional to the cube of distance of orphan's time jitter
The shake of FILTER TO CONTROL is several ten times larger.In experiment orphan's time jitter of bandpass filter, Sliding frequency filter square with away from
From first power it is directly proportional, therefore can greatly expand using wave filter technology and prolong transmission range.
In the present invention, the control system combined using fixed-frequency filter and Sliding frequency filter can effectively control orphan
The center of son spectrum and the centre frequency of filter are detuning, and in the case where giving detuning situation, filter frequencies change rate and sliding frequency are acted on
It balances each other, so that orphan be allowed to reach stable state.
It is compared with single fixed-frequency filter, biggish filtering strength can be used in this control system, can be effectively suppressed
Time jitter, inhibitory effect are better than single fixed-frequency filter.Sliding filter makes orphan's centre frequency with filtering
Device and slide, linear narrow band noise will not then slide, thus keep it is transparent to orphan, to noise suppressed, this method allows to make
With the filter of larger intensity, it can preferably inhibit time jitter.
In the present invention:
The distance controlling of Er-doped fiber mainly considers that length is too long from two angles of cost and effect within 300 meters
Cost can be very high, but if length is too short, will affect the effect of soliton amplification；
Using single-mode quartz optical fibers behind Er-doped fiber, the length of single-mode quartz optical fibers is controlled 200 to 300
Rice, experiments have shown that can effectively meet the purpose of soliton compensation；
Double filtering techniques are filtered using fixed frequency filtering and sliding frequency, reach noise suppressed, the purpose of time jitter.
The soliton amplifier that the present invention designs allows soliton communication really to put into application；
In practical applications, the long-range logical of soliton may be implemented without in addition power supply using passive light soliton am plify device
News.
And the optical soliton communication based on nonlinear optics principle would indicate that apparent advantage, it can not only overcome
The restriction of fibre-optical dispersion improves transmission capacity, and can fundamentally change and use relay station institute band in existing communication mode
The loss and inconvenience come.
Optical soliton communication is the carrier that the orphan in optical fiber is used as to transmitting information, constructs a kind of new fiber optic communication side
Case.The present invention solves optical soliton communication in extra long distance, the scale-up problem of high-speed communication.It is put in the present invention using Er-doped fiber
Big device, which can exempt conventional fiber optic communication technology, to carry out the electric light transformation of light one in relay station and extends repeater span, makes conventional light
Fiber communication reaches a new high.It is local to dense wave division multipurpose, frequency division multiplexing, soliton optical fiber communication, optical fiber is pushed
The development of net and fiber broadband integrated business data network plays very important effect.
The present invention has mainly solved the problems, such as:
Passive light soliton am plify device:
Main material using rare element er-doped as fiber amplifier.Er-doped fiber is mixed in the fibre core of silica fibre
Enter the erbium ion (Er of appropriate concentration3+), the effect of pumping source is to provide energy to erbium ion, by it from low-lying level " pumping " to height
Energy level makes it have optical gain function.
Light compensation technique:
Using Silica single mode optical fiber, for zero material dispersion wavelength near 1.31 μm, which is general single mode fiber
Zero-dispersion wavelength.
Optical filter technology:
Transmission range is prolonged using wave filter technology expansion.The sliding of Sliding frequency filter centre frequency, the center for causing orphan to compose
Detuning with the centre frequency of filter, in the case where giving detuning situation, filter frequencies change rate balances each other with sliding frequency effect, orphan
Reach stable state.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of implementation method of soliton amplifier, which is characterized in that using the light activated soliton signal of pumping with signal
Light is coupled by coupler, generates soliton signal, soliton signal is by of length no more than 300 meters of Er-doped fiber as master
Medium is wanted, realizes optical signal amplification.
2. a kind of implementation method of soliton amplifier according to claim 1, it is characterised in that: the Er-doped fiber is
300 meters, behind connect 200-300 meters of silica fibres.
3. a kind of implementation method of soliton amplifier according to claim 2, it is characterised in that: the silica fibre is
Single-mode quartz optical fibers.
4. a kind of implementation method of soliton amplifier according to claim 3, it is characterised in that: the single mode quartz light
Fine material dispersion and waveguide dispersion it is equal in magnitude, total dispersion is zero.
5. a kind of implementation method of soliton amplifier described in any one of -4 according to claim 1, it is characterised in that: institute
Soliton signal is stated by entering Er-doped fiber after sliding filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910191532.0A CN110021870A (en) | 2019-03-14 | 2019-03-14 | A kind of implementation method of soliton amplifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910191532.0A CN110021870A (en) | 2019-03-14 | 2019-03-14 | A kind of implementation method of soliton amplifier |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02157830A (en) * | 1988-12-12 | 1990-06-18 | Nippon Telegr & Teleph Corp <Ntt> | Optical soliton transmitting system |
| US5191628A (en) * | 1990-11-09 | 1993-03-02 | Northern Telecom Limited | Optical amplifiers |
| JP2008216716A (en) * | 2007-03-06 | 2008-09-18 | Univ Nagoya | Supercontinuum light source |
| CN103399446A (en) * | 2013-07-30 | 2013-11-20 | 吉林大学 | All-optical wavelength converter of optical solitons on basis of weak light regulation |
| CN108110599A (en) * | 2018-01-12 | 2018-06-01 | 中国地质大学（武汉） | A kind of soliton generation device of 2 mu m waveband |
| CN109039466A (en) * | 2018-08-07 | 2018-12-18 | 吉林大学 | A kind of high stability soliton generator based on erbium doped fiber laser |
-
2019
- 2019-03-14 CN CN201910191532.0A patent/CN110021870A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02157830A (en) * | 1988-12-12 | 1990-06-18 | Nippon Telegr & Teleph Corp <Ntt> | Optical soliton transmitting system |
| US5191628A (en) * | 1990-11-09 | 1993-03-02 | Northern Telecom Limited | Optical amplifiers |
| JP2008216716A (en) * | 2007-03-06 | 2008-09-18 | Univ Nagoya | Supercontinuum light source |
| CN103399446A (en) * | 2013-07-30 | 2013-11-20 | 吉林大学 | All-optical wavelength converter of optical solitons on basis of weak light regulation |
| CN108110599A (en) * | 2018-01-12 | 2018-06-01 | 中国地质大学（武汉） | A kind of soliton generation device of 2 mu m waveband |
| CN109039466A (en) * | 2018-08-07 | 2018-12-18 | 吉林大学 | A kind of high stability soliton generator based on erbium doped fiber laser |
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Application publication date: 20190716 |