CN110176711A - A kind of S-band, C-band, L-band erbium-doped fiber amplifier - Google Patents
A kind of S-band, C-band, L-band erbium-doped fiber amplifier Download PDFInfo
- Publication number
- CN110176711A CN110176711A CN201910514970.6A CN201910514970A CN110176711A CN 110176711 A CN110176711 A CN 110176711A CN 201910514970 A CN201910514970 A CN 201910514970A CN 110176711 A CN110176711 A CN 110176711A
- Authority
- CN
- China
- Prior art keywords
- band
- port
- doped fiber
- control module
- division multiplexer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- H01S3/06754—Fibre amplifiers
- H01S3/06762—Fibre amplifiers having a specific amplification band
- H01S3/06766—C-band amplifiers, i.e. amplification in the range of about 1530 nm to 1560 nm
-
- 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
- H01S3/06762—Fibre amplifiers having a specific amplification band
- H01S3/0677—L-band amplifiers, i.e. amplification in the range of about 1560 nm to 1610 nm
-
- 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
- H01S3/06762—Fibre amplifiers having a specific amplification band
- H01S3/06775—S-band amplifiers, i.e. amplification in the range of about 1450 nm to 1530 nm
-
- 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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10007—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating in optical 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a kind of S-band, C-band, L-band erbium-doped fiber amplifier, including input/output module, switch control module, S-band amplification module, C-band amplification module, L-band amplification module；The input/output module, it connect with the switch control module, S-band amplification module, C-band amplification module, L-band amplification module, is output and input for the optical signal to S-band amplification module, C-band amplification module, L-band amplification module respectively；The switch control module is connect with the S-band amplification module, C-band amplification module, L-band amplification module respectively, for control S-band amplification module, C-band amplification module, L-band amplification module optical path on-off；The S-band amplification module, for carrying out light amplification to S-band；The C-band amplification module, for carrying out light amplification to C-band；The L-band amplification module, for carrying out light amplification to L-band.
Description
Technical field
The present invention relates to technical field of photo communication more particularly to a kind of S-band, C-band, L-band Erbium-doped fiber amplifier
Device.
Background technique
In the early 1990s, with the successful development of erbium-doped fiber amplifier and reaching its maturity for wavelength-division multiplex technique,
The capacity and transmission range of fiber optic communication have obtained great promotion.But network causes data communication in eruptive growth in recent years
Amount multiplication, to the capacity of optical fiber telecommunications system, more stringent requirements are proposed.Tradition expands the message capacity of optical fiber telecommunications system
Method increases single channel transmission rate nothing more than, or reduces channel spacing and increase channel quantity, but effect of dispersion and non-thread therewith
Influence of the property effect to system also will increase.So the effective way for increasing transmission capacity is the transmission bandwidth of expansion system, phase
That answers increases the requirement to erbium-doped fiber amplifier performance, i.e. erbium-doped fiber amplifier in system is not only only applicable to C
Wave band.Therefore erbium-doped fiber amplifier is expanded into S, L-band is inevitable choice.
The erbium-doped fiber amplifier of C+L wave band is mature at present and is gradually commercialized, and the fibre loss of S-band is lower than C+
L-band, therefore S-band becomes the potential communication resource.Utilize the bending loss of Er-doped fiber or the refractive index of change optical fiber
Distribution can inhibit the ASE of C-band, realize S-band light amplification.In order to make full use of bandwidth of an optical fiber resource, realize more
Window ultra-wideband-light fiber communication, multiband combination of fiber-optic amplifier, that is, S+C+L wave band super-broadband fiber amplifier become research
The hot spot of work.In addition, how flexibly to select the erbium-doped fiber amplifier of required wave band is also asking for required consideration at present
Topic.
As the patent of Publication No. CN208093939U discloses a kind of small-sized L-band erbium-doped fiber amplifier, comprising: defeated
Enter optical splitter, input isolator, input coupler, the first Er-doped fiber, intervening isolator, output coupler, pump light splitter,
Second Er-doped fiber, output isolator, output optical splitter, pump laser, Input Monitor Connector device, output monitor；More preferably, defeated
Enter optical splitter, input isolator, input coupler to be integrated in a three-in-one hybrid device H1.More preferably, intervening isolator,
Output coupler is integrated in a two-in-one hybrid device H2.More preferably, optical splitter is exported, output monitor is integrated in one
In two-in-one hybrid device H3.The advantages of L-band erbium-doped fiber amplifier is: 1) compact-sized, volume very little can meet
The requirement of Transmission system high integration.2) automated power control is used, it is easy to use, it is easily managed.3) power consumption is extremely low, is suitable for
Highly integrated transmitting receives board.Although being combined it discloses L-band erbium-doped fiber amplifier for multiband
Fiber amplifier, that is, S+C+L wave band super-broadband fiber amplifier cannot be still resolved；In addition, how flexibly to select institute
Need wave band erbium-doped fiber amplifier be also at present required for consider the problems of.
Summary of the invention
The purpose of the present invention is in view of the drawbacks of the prior art, provide a kind of S-band, C-band, L-band er-doped light
Fiber amplifier can be realized the light amplification of S-band, three C-band, L-band wave band any combination wave bands.
In order to achieve the goal above, the invention adopts the following technical scheme:
A kind of S-band, C-band, L-band erbium-doped fiber amplifier, comprising: input/output module, switch control module,
S-band amplification module, C-band amplification module, L-band amplification module；
The input/output module, respectively with the switch control module, S-band amplification module, C-band amplification module, L
The connection of wave band amplification module, carries out for the optical signal to S-band amplification module, C-band amplification module, L-band amplification module
It outputs and inputs；
The switch control module, respectively with the S-band amplification module, C-band amplification module, L-band amplification module
Connection, for control S-band amplification module, C-band amplification module, L-band amplification module optical path on-off；
The S-band amplification module, for carrying out light amplification to S-band；
The C-band amplification module, for carrying out light amplification to C-band；
The L-band amplification module, for carrying out light amplification to L-band.
Further, the switch control module includes the first photoswitch control module, the second photoswitch control module, the
Three photoswitch control modules, the 4th photoswitch control module, the 5th photoswitch control module.
Further, the input/output module includes tunable light source, spectrometer, the first optical circulator, S/CLband wave
Division multiplexer, C/Lband wavelength division multiplexer；The specially described tunable light source is multiple by the first optical circulator, S/CLband wavelength-division
It is connect with S-band amplification module by optical fiber with the first port of device；The second port and C/ of S/CLband wavelength division multiplexer
The first port of Lband wavelength division multiplexer connects；The second port of C/Lband wavelength division multiplexer passes through with C-band amplification module
Optical fiber connection；The third port of C/Lband wavelength division multiplexer is connect with L-band amplification module by optical fiber；First optical circulator
First port connect with spectrometer by optical fiber and the output as entire amplifier；The first of S/CLband wavelength division multiplexer
The connection of first photoswitch control module of port and switch control module；The second port and switch of C/Lband wavelength division multiplexer
Second photoswitch control module of control module connects；The third port of C/Lband wavelength division multiplexer and switch control module
The connection of third photoswitch control module.
Further, the S-band amplification module includes that S-band pump laser, S-band wavelength division multiplexer, S-band are mixed
Erbium optical fiber, the second optical circulator, first filter；The of specially the first photoswitch control module and S-band wavelength division multiplexer
Single port connection；S-band pump laser is connect with the second port of S-band wavelength division multiplexer；The of S-band wavelength division multiplexer
Three ports are connect with one end of S-band Er-doped fiber；The first port of the other end of S-band Er-doped fiber and the second optical circulator
Connection；The second port of second optical circulator is connect with first filter one end；The first filter other end and the second ring of light shape
The third port of device connects.
Further, the C-band amplification module includes that C+L wave band pump laser, three-dB coupler, C-band wavelength-division are multiple
With device, C-band Er-doped fiber, third optical circulator, second filter；Specially the second photoswitch control module and C-band wave
The first port of division multiplexer is connected；The connection of the first port of C+L wave band pump laser and three-dB coupler；Three-dB coupler
Second port is connect with one end of the 4th photoswitch control module；The other end of 4th photoswitch control module and C-band wavelength-division
The second port of multiplexer connects；The third port of C-band wavelength division multiplexer is connect with one end of C-band Er-doped fiber；C-band
The other end of Er-doped fiber is connect with third optical circulator first port；The second port and second filter of third optical circulator
One end connection；The other end of second filter is connect with the third port of third optical circulator.
Further, the L-band amplification module includes that C+L wave band pump laser, three-dB coupler, L-band wavelength-division are multiple
With device, L-band Er-doped fiber, the 4th optical circulator, third filter；Specially third photoswitch control module and L-band wave
The first port of division multiplexer connects；The connection of the first port of C+L wave band pump laser and three-dB coupler；Three-dB coupler
Third port is connect with one end of the 5th photoswitch control module；The other end of 5th photoswitch control module and L-band wavelength-division
The second port of multiplexer connects；The third port of L-band wavelength division multiplexer is connect with one end of L-band Er-doped fiber；L-band
The other end of Er-doped fiber is connect with the first port of the 4th optical circulator；The second port and third of 4th optical circulator filter
One end of device connects；The other end of third filter is connect with the third port of the 4th optical circulator.
Further, the S-band pump laser uses the humorous laser of power adjustable of 980nm；The C+L wave band pump
The Pu laser C+L wave band two-in-one pump laser humorous using 980nm power adjustable.
Further, the S-band Er-doped fiber, C-band Er-doped fiber, L-band Er-doped fiber are all made of low covering stone
English doped fiber；
The length of the S-band Er-doped fiber is 15m, gain ranging 1480nm-1530nm；
The length of the C-band Er-doped fiber is 10m, gain ranging 1530nm-1565nm；
The length of the L-band Er-doped fiber is 20m, gain ranging 1565nm-1610nm.
Further, the switch control module uses mechanical optical switch, for realizing the control of optical path on-off.
Further, the first filter, second filter, third filter are notch filter, for filtering out
The peak signal of ASE, noise-reduction coefficient.
Further, S-band, C-band, L-band Erbium-doped fiber amplifier module set using circulator and notch filter
Be calculated as binary channels (DPF) structure, by amplify optical signal twice and filter filter out ASE peak power make system in gain and
Improved well in terms of bandwidth.
Compared with prior art, amplifier architecture of the invention is simple, at low cost, integrated, the Neng Goushi that is easy to fibre system
Existing S-band, C-band, L-band any combination wave band light amplification, in addition using binary channels (DPF) structure with filter
It improves significantly in terms of gain and bandwidth relative to single-pass configuration.
Detailed description of the invention
Fig. 1 be embodiment one provide a kind of S-band, C-band, L-band erbium-doped fiber amplifier structure chart；
Fig. 2 be embodiment one provide a kind of S-band, C-band, L-band erbium-doped fiber amplifier structural schematic diagram；
Fig. 3 is the connection schematic diagram for the input/output module that embodiment one provides；
Fig. 4 is the S-band amplification module connection schematic diagram that embodiment one provides；
Fig. 5 is the C-band amplification module connection schematic diagram that embodiment one provides；
Fig. 6 is the L-band amplification module connection schematic diagram that embodiment one provides；
Fig. 7 is the gain spectrogram for the S-band that embodiment one provides；
Fig. 8 is the gain spectrogram for the C-band that embodiment one provides；
Fig. 9 is the gain spectrogram for the L-band that embodiment one provides.
Wherein, 1. tunable light source；2. spectrometer；The first optical circulator of 3-1.；The second optical circulator of 3-2.；3-3. third light
Circulator；The 4th optical circulator of 3-4.；4.S/CLband wavelength division multiplexer；5-1. the first photoswitch control module；5-2. second
Photoswitch control module；5-3. third photoswitch control module；The 4th photoswitch control module of 5-4.；The 5th photoswitch control of 5-5.
Molding block；6.C+L wave band pump laser；7.3dB coupler；8.S wave band wavelength division multiplexer；9.C wave band wavelength division multiplexer；
10.L wave band wavelength division multiplexer；11.S wave band pump laser；12.S wave band Er-doped fiber；13.C wave band Er-doped fiber；14.L
Wave band Er-doped fiber；15-1. first filter；15-2. second filter；15-3. third filter；16.C/Lband wavelength-division is multiple
Use device；The first port of e.S/CLband wavelength division multiplexer；The second port of f.S/CLband wavelength division multiplexer；t.C/Lband
The first port of wavelength division multiplexer；The second port of g.C/Lband wavelength division multiplexer；The third of u.C/Lband wavelength division multiplexer
Port；C. the first port of the first optical circulator；The first port of m.S wave band wavelength division multiplexer；K.S wave band wavelength division multiplexer
Second port；The third port of l.S wave band wavelength division multiplexer；The first port of n.C wave band wavelength division multiplexer；P.C wave band wavelength-division
The second port of multiplexer；The third port of o.C wave band wavelength division multiplexer；H.3dB the first port of coupler；I.3dB it couples
The second port of device；J.3dB the third port of coupler；The first port of q.L wave band wavelength division multiplexer；S.L wave band wavelength-division is multiple
With the second port of device；The third port of r.L wave band wavelength division multiplexer.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that in the absence of conflict, following embodiment and implementation
Feature in example can be combined with each other.
The purpose of the present invention is in view of the drawbacks of the prior art, provide a kind of S-band, C-band, L-band er-doped light
Fiber amplifier can be realized the light amplification of S-band, three C-band, L-band wave band any combination wave bands.
Embodiment one
The present embodiment provides a kind of S-band, C-band, L-band erbium-doped fiber amplifier, as shown in Figure 1, comprising: input
Output module, switch control module, S-band amplification module, C-band amplification module, L-band amplification module.
The input/output module, respectively with the switch control module, S-band amplification module, C-band amplification module, L
The connection of wave band amplification module, carries out for the optical signal to S-band amplification module, C-band amplification module, L-band amplification module
It outputs and inputs；
The switch control module, respectively with the S-band amplification module, C-band amplification module, L-band amplification module
Connection, for control S-band amplification module, C-band amplification module, L-band amplification module optical path on-off；
The S-band amplification module, for carrying out light amplification to S-band；
The C-band amplification module, for carrying out light amplification to C-band；
The L-band amplification module, for carrying out light amplification to L-band.
As shown in Fig. 2, the input/output module includes tunable light source 1, spectrometer 2, first optical circulator 3-1, S/
CLband wavelength division multiplexer 4, C/Lband wavelength division multiplexer 16；Pass through S/CLband wavelength division multiplexer 4, C/Lband wavelength-division multiplex
The optical coupling of different-waveband is passed through the first ring of light shape into different-waveband light amplification module, and by the amplified signal light of return by device 16
Device 3-1 connection spectrometer 2 is monitored.
The switch control module includes the first photoswitch control module 5-1, the second photoswitch control module 5-2, third
Photoswitch control module 5-3, the 4th photoswitch control module 5-4, the 5th photoswitch control module 5-5；For controlling S-band, C
The on-off of wave band, L-band amplification module.
The S-band amplification module includes S-band pump laser 11, S-band wavelength division multiplexer 8, S-band Er-doped fiber
12, the second optical circulator 3-2, first filter 15-1；
The C-band amplification module includes C+L wave band pump laser 6, three-dB coupler 7, C-band wavelength division multiplexer 9, C
Wave band Er-doped fiber 13, third optical circulator 3-3, second filter 15-2；
The L-band amplification module include C+L wave band pump laser 6, three-dB coupler 7, L-band wavelength division multiplexer 10,
L-band Er-doped fiber 14, the 4th optical circulator 3-4, third filter 15-3；
S-band, C-band, L-band Erbium-doped fiber amplifier module be designed as binary channels using circulator and notch filter
(DPF) structure filters out ASE peak power and obtains system in terms of gain and bandwidth by amplifying optical signal and filter twice
Improve to good.
Specifically, as shown in figure 3, input/output module be specially the tunable light source 1 by the first optical circulator 3-1,
The first port e of S/CLband wavelength division multiplexer 4 is connect with S-band amplification module by optical fiber；S/CLband wavelength division multiplexer 4
Second port f connect with the first port t of C/Lband wavelength division multiplexer 16；The second port of C/Lband wavelength division multiplexer 16
G is connect with C-band amplification module by optical fiber；The third port u and L-band amplification module of C/Lband wavelength division multiplexer 16 are logical
Cross optical fiber connection；The first port c of first optical circulator 3-1 is connect by optical fiber with spectrometer 2 and as entire amplifier
Output；The first photoswitch control module 5-1 connection of the first port e and switch control module of S/CLband wavelength division multiplexer 4；
The second photoswitch control module 5-2 connection of the second port g and switch control module of C/Lband wavelength division multiplexer 16；C/
The third photoswitch control module 5-3 connection of the third port u and switch control module of Lband wavelength division multiplexer 16.
As shown in figure 4, S-band amplification module is specially the first of the S/CLband wavelength division multiplexer 4 of input/output module
One end of first photoswitch control module 5-1 of port e and switch control module connects；First photoswitch control module 5-1's
The other end is connect with the first port m of S-band wavelength division multiplexer 8；S-band pump laser 11 and S-band wavelength division multiplexer 8
Second port k connection；The third port l of S-band wavelength division multiplexer 8 is connect with one end of S-band Er-doped fiber 12；S-band is mixed
The other end of erbium optical fiber 12 is connect with the first port of the second optical circulator 3-2；The second port of second optical circulator 3-2 and the
One end of one filter 15-1 connects；The other end of first filter 15-1 and the third port of the second optical circulator 3-2 pass through
Optical fiber connection connection.
As shown in figure 5, C-band amplification module is specially the second of the C/Lband wavelength division multiplexer 16 of input/output module
One end of second photoswitch control module 5-2 of port g and switch control module connects；Second photoswitch control module 5-2's
The other end is connected with the first port n of C-band wavelength division multiplexer 9；The first of C+L wave band pump laser 6 and three-dB coupler 7
Port h connection；The second port i of three-dB coupler 7 is connect with one end of the 4th photoswitch control module 5-4；4th photoswitch control
The other end of molding block 5-4 is connect with the second port p of C-band wavelength division multiplexer 9；The third port of C-band wavelength division multiplexer 9
O is connect with one end of C-band Er-doped fiber 13；The other end and third optical circulator 3-3 first port of C-band Er-doped fiber 13
Connection；The second port of third optical circulator 3-3 is connect with one end of second filter 15-2；Second filter 15-2's is another
End is connect with the third port of third optical circulator 3-3 by optical fiber.
As shown in fig. 6, L-band amplification module is specially the third of the C/Lband wavelength division multiplexer 16 of input/output module
One end of the third photoswitch control module 5-3 of port u and switch control module connects；Third photoswitch control module 5-3's
The other end is connect with the first port q of L-band wavelength division multiplexer 10；The first of C+L wave band pump laser 6 and three-dB coupler 7
Port h connection；The third port j of three-dB coupler 7 is connect with one end of the 5th photoswitch control module 5-5；5th photoswitch control
The other end of molding block 5-5 is connect with the second port s of L-band wavelength division multiplexer 10；The third end of L-band wavelength division multiplexer 10
Mouth r is connect with one end of L-band Er-doped fiber 14；The first of the other end of L-band Er-doped fiber 14 and the 4th optical circulator 3-4
Port connection；The second port of 4th optical circulator 3-4 is connect with one end of third filter 15-3；Third filter 15-3's
The other end is connect with the third port of the 4th optical circulator 3-4 by optical fiber.
In the present embodiment, S-band pump laser 11 uses the humorous laser of power adjustable of 980nm；The pumping of C+L wave band
The C+L wave band two-in-one pump laser humorous using 980nm power adjustable of laser 6.
In the present embodiment, S-band Er-doped fiber 12, C-band Er-doped fiber 13, L-band Er-doped fiber 14 are all made of low
Clad silica doped fiber；
The length of S-band Er-doped fiber 12 is 15m, gain ranging 1480nm-1530nm；
The length of C-band Er-doped fiber 13 is 10m, gain ranging 1530nm-1565nm；
The length of L-band Er-doped fiber 14 is 20m, gain ranging 1565nm-1610nm.
In the present embodiment, switch control module uses mechanical optical switch, for realizing the control of optical path on-off.
In the present embodiment, first filter 15-1, second filter 15-2, third filter 15-3 are notch filter
Device, for filtering out the peak signal of ASE, noise-reduction coefficient.
In the present embodiment, the second photoswitch control module 5-2 is consistent with the on-off of the 4th photoswitch control module 5-4,
I.e. only when the second photoswitch control module 5-2 is connected to, the 4th photoswitch control module 5-4 is just connected to；It is described to be opened in third light
It is consistent with the on-off of the 5th photoswitch control module to close control module, i.e., only when third photoswitch control module 5-3 is connected to
5th photoswitch control module 5-5 is just connected to.
In the present embodiment, it can be achieved that the light amplification of three kinds of any band combinations, specifically:
The light amplification of individual S-band, C-band, L-band, the broad-band optical amplifier of C+L wave band and surpassing for S+C+L wave band
Broad-band optical amplifier.When the first photoswitch control module 5-1 is closed in switch control module, tunable light source 1, input/output module
Connection S-band amplification module realizes the image intensifer of the channel structure of a S-band, and amplified signal light returns first annular
The first port c of device 3-1 connects output of the spectrometer 2 as entire amplifier；When the second photoswitch controls in switch control module
When module 5-2 and the 4th photoswitch control module 5-4 is closed, input/output module connection C-band amplification module realizes a C
The image intensifer of the channel structure of wave band, the first port c that amplified signal light returns to first annular device 3-1 connect the work of spectrometer 2
For the output of entire amplifier；When third photoswitch control module 5-3 in switch control module and the 5th photoswitch control module
When 5-5 is closed, input/output module connection L-band amplification module realizes the image intensifer of the channel structure of a L-band,
The first port c that amplified signal light returns to first annular device 3-1 connects output of the spectrometer 2 as entire amplifier；When switch is controlled
Second photoswitch control module 5-2, third photoswitch control module 5-3, the 4th photoswitch control module 5-4 and in molding block
When five photoswitch control module 5-5 are all closed, connection C-band amplification module and L-band amplification module realize a broadband C
The image intensifer of+L-band；First photoswitch control module 5-1, the second photoswitch control module 5-2, in switch control module
Three photoswitch control module 5-3, the 4th photoswitch control module 5-4 and the 5th photoswitch control module 5-5 are all closed, connection
S-band amplification module, C-band amplification module and L-band amplification module realize the light amplification of a ultra wide band S+C+L wave band
Device.
A kind of S-band provided in this embodiment, C-band, L-band erbium-doped fiber amplifier basic principle it is as follows:
S-band binary channels (DPF) structure erbium-doped fiber amplifier principle: tunable light source 1 is through first in input/output module
Optical circulator 3-1, the S-band being coupled by the first port e of S/CLband wavelength division multiplexer 4 in S-band amplification module
Er-doped fiber 12 amplifies, and the optical signal being amplified passes through the first port of the second optical circulator 3-2, second port through first
Filter 15-1 filters out S-band ASE peak signal noise-reduction coefficient, then the third port through the second optical circulator 3-2 returns to S
The Er-doped fiber 12 of wave band carries out secondary amplification, and the signal light of secondary amplification is answered again by wavelength-division in input/output module
It is exported with the first port c through the first optical circulator 3-1 after device to spectrometer 2, it can be observed that S-band in this way in spectrometer
Spontaneous radiation spectrum.
C-band binary channels (DPF) structure erbium-doped fiber amplifier principle: tunable light source 1 is through first in input/output module
Optical circulator 3-1, S/CLband wavelength division multiplexer 4 is coupled into C wave by the second port g of C/Lband wavelength division multiplexer 16
C-band Er-doped fiber 13 in section amplification module amplifies, and the optical signal being amplified passes through the first of third optical circulator 3-3
Port, second port filter out C-band ASE peak signal noise-reduction coefficient through second filter 15-2, then through third ring of light shape
The Er-doped fiber 13 that the third port of device 3-3 returns to C-band carries out secondary amplification, by the signal light of secondary amplification again by
The first port c through the first optical circulator 3-1 is exported to spectrometer 2, in this way in light after wavelength division multiplexer in output output module
It can be observed that the spontaneous radiation spectrum of C-band in spectrometer.
L-band binary channels (DPF) structure erbium-doped fiber amplifier principle: tunable light source 1 is through first in input/output module
Optical circulator 3-1, S/CLband wavelength division multiplexer 4 is coupled into L wave by the third port u of C/Lband wavelength division multiplexer 16
L-band Er-doped fiber 14 in section amplification module amplifies, and the optical signal being amplified passes through the first of the 4th optical circulator 3-4
Port, second port filter out L-band ASE peak signal noise-reduction coefficient through third filter 15-3, then through the 4th ring of light shape
The Er-doped fiber 14 that the third port of device 3-4 returns to L-band carries out secondary amplification, by the signal light of secondary amplification again by
First port c in input/output module through the first optical circulator 3-1 after wavelength division multiplexer is exported to spectrometer 2, in this way in light
It can be observed that the spontaneous radiation spectrum of L-band in spectrometer.
It is illustrated in figure 7 the gain spectrogram of S-band；It is illustrated in figure 8 the gain spectrogram of C-band；It is illustrated in figure 9 L wave
The gain spectrogram of section.
The present embodiment passes through three control photoswitch available S-band, C-band, L-band wave band any combination wave bands
Light amplification, the amplification of each wave band are filtered out using binary channels (DPF) structure for having filter by the way that notch filter is added
ASE peak signal reduces ASE major part spectral power, reduces and noise coefficient and further increases gain, in bandwidth and
It is better than single-pass configuration in terms of gain.Finally, the signal light power of amplification is also joined by pump power and Er-doped fiber length etc.
Several influence, it is therefore desirable to reasonably select pumping light power and Er-doped fiber length to obtain optimal erbium-doped fiber amplifier
Performance.With the continuous development of various photoelectric devices, erbium-doped fiber amplifier will obtain the output of more high-gain, and its
Using also will more extensively.
The structure of the amplifier of the present embodiment is simple, at low cost, to be easy to fibre system integrated, can be realized S-band, C wave
In addition the light amplification of three section, L-band wave band any combination wave bands is being increased using binary channels (DPF) structure with filter
It improves significantly in terms of benefit and bandwidth relative to single-pass configuration.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. the erbium-doped fiber amplifier of a kind of S-band, C-band, L-band characterized by comprising input/output module, switch
Control module, S-band amplification module, C-band amplification module, L-band amplification module；
The input/output module, respectively with the switch control module, S-band amplification module, C-band amplification module, L-band
Amplification module connection, inputs for the optical signal to S-band amplification module, C-band amplification module, L-band amplification module
And output；
The switch control module is connect with the S-band amplification module, C-band amplification module, L-band amplification module respectively,
For controlling the optical path on-off of S-band amplification module, C-band amplification module, L-band amplification module；
The S-band amplification module, for carrying out light amplification to S-band；
The C-band amplification module, for carrying out light amplification to C-band；
The L-band amplification module, for carrying out light amplification to L-band.
2. the erbium-doped fiber amplifier of a kind of S-band according to claim 1, C-band, L-band, which is characterized in that institute
Stating switch control module includes the first photoswitch control module, the second photoswitch control module, third photoswitch control module, the
Four photoswitch control modules, the 5th photoswitch control module.
3. the erbium-doped fiber amplifier of a kind of S-band according to claim 2, C-band, L-band, which is characterized in that institute
Stating input/output module includes tunable light source, spectrometer, the first optical circulator, S/CLband wavelength division multiplexer, C/Lband wavelength-division
Multiplexer；The first port and S-band that the specially described tunable light source passes through the first optical circulator, S/CLband wavelength division multiplexer
Amplification module is connected by optical fiber；The second port of S/CLband wavelength division multiplexer and the first end of C/Lband wavelength division multiplexer
Mouth connection；The second port of C/Lband wavelength division multiplexer is connect with C-band amplification module by optical fiber；C/Lband wavelength-division multiplex
The third port of device is connect with L-band amplification module by optical fiber；The first port and spectrometer of first optical circulator pass through light
Fibre connection and the output as entire amplifier；The first of the first port of S/CLband wavelength division multiplexer and switch control module
The connection of photoswitch control module；The second port of C/Lband wavelength division multiplexer and the second photoswitch of switch control module control
Module connection；The third port of C/Lband wavelength division multiplexer and the third photoswitch control module of switch control module connect.
4. the erbium-doped fiber amplifier of a kind of S-band according to claim 3, C-band, L-band, which is characterized in that institute
Stating S-band amplification module includes S-band pump laser, S-band wavelength division multiplexer, S-band Er-doped fiber, the second ring of light row
Device, first filter；Specially the first photoswitch control module is connect with the first port of S-band wavelength division multiplexer；S-band pump
Pu laser is connect with the second port of S-band wavelength division multiplexer；The third port and S-band er-doped of S-band wavelength division multiplexer
One end of optical fiber connects；The other end of S-band Er-doped fiber is connect with the first port of the second optical circulator；Second optical circulator
Second port connect with first filter one end；The first filter other end is connect with the third port of the second optical circulator.
5. the erbium-doped fiber amplifier of a kind of S-band according to claim 4, C-band, L-band, which is characterized in that institute
State C-band amplification module include C+L wave band pump laser, three-dB coupler, C-band wavelength division multiplexer, C-band Er-doped fiber,
Third optical circulator, second filter；The specially first port phase of the second photoswitch control module and C-band wavelength division multiplexer
Even；The connection of the first port of C+L wave band pump laser and three-dB coupler；The second port of three-dB coupler and the 4th photoswitch
One end of control module connects；The other end of 4th photoswitch control module is connect with the second port of C-band wavelength division multiplexer；
The third port of C-band wavelength division multiplexer is connect with one end of C-band Er-doped fiber；The other end of C-band Er-doped fiber and
The connection of three optical circulator first ports；The second port of third optical circulator and one end of second filter connect；Second filtering
The other end of device is connect with the third port of third optical circulator.
6. the erbium-doped fiber amplifier of a kind of S-band according to claim 5, C-band, L-band, which is characterized in that institute
State L-band amplification module include C+L wave band pump laser, three-dB coupler, L-band wavelength division multiplexer, L-band Er-doped fiber,
4th optical circulator, third filter；Specially the first port of third photoswitch control module and L-band wavelength division multiplexer connects
It connects；The connection of the first port of C+L wave band pump laser and three-dB coupler；The third port of three-dB coupler and the 5th photoswitch
One end of control module connects；The other end of 5th photoswitch control module is connect with the second port of L-band wavelength division multiplexer；
The third port of L-band wavelength division multiplexer is connect with one end of L-band Er-doped fiber；The other end of L-band Er-doped fiber and
The first port of four optical circulators connects；The second port of 4th optical circulator is connect with one end of third filter；Third filter
The other end of wave device is connect with the third port of the 4th optical circulator.
7. the erbium-doped fiber amplifier of a kind of S-band according to claim 6, C-band, L-band, which is characterized in that institute
State the humorous laser of power adjustable that S-band pump laser uses 980nm；The C+L wave band pump laser uses 980nm function
The two-in-one pump laser of C+L wave band that rate is tunable.
8. the erbium-doped fiber amplifier of a kind of S-band according to claim 6, C-band, L-band, which is characterized in that institute
It states S-band Er-doped fiber, C-band Er-doped fiber, L-band Er-doped fiber and is all made of low clad silica doped fiber；
The length of the S-band Er-doped fiber is 15m, gain ranging 1480nm-1530nm；
The length of the C-band Er-doped fiber is 10m, gain ranging 1530nm-1565nm；
The length of the L-band Er-doped fiber is 20m, gain ranging 1565nm-1610nm.
9. the erbium-doped fiber amplifier of a kind of S-band according to claim 2, C-band, L-band, which is characterized in that institute
Switch control module is stated using mechanical optical switch, for realizing the control of optical path on-off.
10. the erbium-doped fiber amplifier of a kind of S-band according to claim 7 or 8, C-band, L-band, feature exist
In, the first filter, second filter, third filter are notch filter, for filtering out the peak signal of ASE,
Noise-reduction coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910514970.6A CN110176711B (en) | 2019-06-14 | 2019-06-14 | Erbium-doped optical fiber amplifier with S wave band, C wave band and L wave band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910514970.6A CN110176711B (en) | 2019-06-14 | 2019-06-14 | Erbium-doped optical fiber amplifier with S wave band, C wave band and L wave band |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110176711A true CN110176711A (en) | 2019-08-27 |
| CN110176711B CN110176711B (en) | 2020-04-24 |
Family
ID=67697279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910514970.6A Active CN110176711B (en) | 2019-06-14 | 2019-06-14 | Erbium-doped optical fiber amplifier with S wave band, C wave band and L wave band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110176711B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490826A (en) * | 2020-04-10 | 2020-08-04 | 武汉光迅科技股份有限公司 | Remote pump amplifier and optical communication system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1410824A (en) * | 2002-11-05 | 2003-04-16 | 浙江大学 | Long wave band erbium mixed amplifier with low noise, high gain and high plain |
| US20030142392A1 (en) * | 2001-07-30 | 2003-07-31 | Strutz Shane J. | Hybrid brillouin/erbium doped fiber amplifier apparatus and method |
| CN1815338A (en) * | 2005-02-04 | 2006-08-09 | 华为技术有限公司 | Broadband optical fiber amplifier |
| CN104377535A (en) * | 2014-12-05 | 2015-02-25 | 黑龙江大学 | Single grating high gain flatness L-band erbium doped fiber amplifier |
| CN208093939U (en) * | 2018-01-31 | 2018-11-13 | 无锡市德科立光电子技术有限公司 | Small-sized L-band erbium-doped fiber amplifier |
-
2019
- 2019-06-14 CN CN201910514970.6A patent/CN110176711B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030142392A1 (en) * | 2001-07-30 | 2003-07-31 | Strutz Shane J. | Hybrid brillouin/erbium doped fiber amplifier apparatus and method |
| CN1410824A (en) * | 2002-11-05 | 2003-04-16 | 浙江大学 | Long wave band erbium mixed amplifier with low noise, high gain and high plain |
| CN1815338A (en) * | 2005-02-04 | 2006-08-09 | 华为技术有限公司 | Broadband optical fiber amplifier |
| CN104377535A (en) * | 2014-12-05 | 2015-02-25 | 黑龙江大学 | Single grating high gain flatness L-band erbium doped fiber amplifier |
| CN208093939U (en) * | 2018-01-31 | 2018-11-13 | 无锡市德科立光电子技术有限公司 | Small-sized L-band erbium-doped fiber amplifier |
Non-Patent Citations (1)
| Title |
|---|
| 谭莉 等: "长波段掺铒光纤放大器的设计新方案", 《量子电子学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490826A (en) * | 2020-04-10 | 2020-08-04 | 武汉光迅科技股份有限公司 | Remote pump amplifier and optical communication system |
| CN111490826B (en) * | 2020-04-10 | 2021-11-16 | 武汉光迅科技股份有限公司 | Remote pump amplifier and optical communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110176711B (en) | 2020-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6151160A (en) | Broadband Raman pre-amplifier for wavelength division multiplexed optical communication systems | |
| KR100387072B1 (en) | Bidirectional Optical Amplifier | |
| US6396623B1 (en) | Wide-band optical amplifiers with interleaved gain stages | |
| US5920424A (en) | Article comprising a broadband optical fiber amplifier | |
| EP3664231B1 (en) | Optical amplification system | |
| CN113497403B (en) | Optical fiber, optical amplifier and optical communication system | |
| CN102495510A (en) | Gain flat type high-power optical fiber amplifier based on optical fiber loop mirror | |
| CN106788751A (en) | One kind the application two-way raman amplification fiber telecommunication transmission system of multi-wavelength bidirectional pumping high-order and method | |
| Iqbal et al. | Improved design of ultra-wideband discrete Raman amplifier with low noise and high gain | |
| US7346280B1 (en) | Bi-directional long haul/ultra long haul optical communication link | |
| KR100810859B1 (en) | A device of improve gain with optical amplifier for l band | |
| EP0459685A2 (en) | Multi-stage optical amplifier | |
| US5801879A (en) | Device and method to supress Q-switching in an optical amplifying device | |
| CN112953640B (en) | Cascade remote pump amplification system, remote gain unit and signal light amplification method | |
| Kawai et al. | Ultrawide, 75 nm 3 dB gain-band optical amplifier utilizing erbium-doped fluoride fiber and Raman fiber | |
| KR100342427B1 (en) | Multi-stage bidirectional optical amplifier | |
| US6532104B1 (en) | C-band and L-band optical amplifier for submarine transmission systems | |
| CN110176711A (en) | A kind of S-band, C-band, L-band erbium-doped fiber amplifier | |
| CA2351268C (en) | Raman amplifier with gain enhancement from optical filtering | |
| US6384962B1 (en) | Method and apparatus to perform automatic gain equalization using raman amplifiers | |
| CA2264421A1 (en) | Optical fiber amplifier and optical amplification device for bidirectional optical transmission using the optical fiber amplifier | |
| JP2006294819A (en) | Component for optical amplification, optical amplifier, and optical communication system | |
| US6456425B1 (en) | Method and apparatus to perform lumped raman amplification | |
| CN115552812A (en) | Optical fiber amplifier, wavelength division multiplexing system and optical communication equipment | |
| JPH10107351A (en) | Er-doped optical fiber amplifier for bidirectional transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |