CN106918972A - Aowc - Google Patents
Aowc Download PDFInfo
- Publication number
- CN106918972A CN106918972A CN201710184102.7A CN201710184102A CN106918972A CN 106918972 A CN106918972 A CN 106918972A CN 201710184102 A CN201710184102 A CN 201710184102A CN 106918972 A CN106918972 A CN 106918972A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- aowc
- light
- hnlf
- transmitting terminal
- 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.)
- Pending
Links
- 238000006243 chemical reaction Methods 0.000 claims abstract description 57
- 239000013307 optical fiber Substances 0.000 claims abstract description 49
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 22
- 239000004411 aluminium Substances 0.000 claims abstract description 22
- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims description 8
- 230000001427 coherent effect Effects 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 4
- 230000010287 polarization Effects 0.000 claims description 3
- 229910052732 germanium Inorganic materials 0.000 abstract description 13
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 abstract description 13
- 238000005086 pumping Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 101000638194 Homo sapiens Transmembrane emp24 domain-containing protein 4 Proteins 0.000 abstract 3
- 102100031986 Transmembrane emp24 domain-containing protein 4 Human genes 0.000 abstract 3
- 239000006185 dispersion Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000001228 spectrum Methods 0.000 description 7
- 230000010363 phase shift Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000005094 computer simulation Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 230000005374 Kerr effect Effects 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013401 experimental design Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- 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
- G02F1/353—Frequency conversion, i.e. wherein a light beam is generated with frequency components different from those of the incident light beams
-
- 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
- G02F1/365—Non-linear optics in an optical waveguide structure
-
- 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
- G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
- G02F2/004—Transferring the modulation of modulated light, i.e. transferring the information from one optical carrier of a first wavelength to a second optical carrier of a second wavelength, e.g. all-optical wavelength converter
-
- 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
- G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
- G02F2/004—Transferring the modulation of modulated light, i.e. transferring the information from one optical carrier of a first wavelength to a second optical carrier of a second wavelength, e.g. all-optical wavelength converter
- G02F2/006—All-optical wavelength conversion
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
Abstract
The present invention relates to a kind of efficient AOWC based on highly nonlinear optical fiber, including the transmitting terminal and receiving terminal connected by optical fiber, wherein the transmitting terminal will be input into the optical fiber after flashlight and coupling pump light；The optical fiber includes that what is cascaded mixes aluminium optical fiber and germnium doped fiber, and it receives and guide the flashlight and pump light exported by the transmitting terminal, and produces conversion light using the nonlinear optical phenomena that the optical fiber is produced when guiding the flashlight with pump light；The receiving terminal receives the conversion light of the optical fiber output.It is proposed by the present invention 150m mixed into aluminium HNLF and 100m mix germanium HNLF be concatenated together realizing the AOWC scheme of high conversion efficiency, without using the pumping dither technique of any raising SBS threshold in the program, the conversion efficiency of 3.1dB is can be realized as using only commercial HNLF.Additionally, after the QPSK signals to 25Gb/s are changed, measuring it 10‑5Power attenuation during series BER can be less than the level of 0.5dB.
Description
Technical field
The present invention relates to a kind of Wavelength converter, more particularly to a kind of efficient all-optical wave-length based on highly nonlinear optical fiber
Converter.
Background technology
In the network capacity for solving the problems, such as continuous rising, how effectively to become particularly significant using frequency spectrum resource.Remove
Outside with the advanced modulation formats with spectral efficient, Spectral integration is also important skill for improving the availability of frequency spectrum
Art.In transport layer, Spectral integration technology is mainly reflected in network algorithm and two aspects of wavelength convert.Wavelength conversion technology energy
Enough redistribute Wavelength distribution and strengthen flexibility and the utilization rate of frequency spectrum.Compared to Traditional photovoltaic/electric light wavelength shifter
Say, AOWC has many advantages, for example：Relatively low energy loss, the response for breaking speed of electronics bottleneck
Speed and to modulation format signal rate transparency etc..It is currently based on the AOWC of different nonlinear dielectrics
Many researchs are expanded, for example, has been had based on semiconductor optical amplifier, highly nonlinear optical fiber (HNLF), silicon waveguide etc..Base
Superfast signal can be processed because of the super fast response speed of Kerr effect in the All Optical Wavelength Conversion scheme of HNLF, and whole
The characteristics of there is low-loss and the controllability to dispersion during individual so that it takes off grain husk in numerous All Optical Wavelength Conversion schemes
And go out.
Conversion efficiency (conversion efficiency, CE) is to weigh a wavelength shifter quality with switching bandwith
Two standards.In the wavelength shifter based on HNLF, conversion efficiency is mainly and determined by nonlinear phase shift γ PL (definition
It is pump power PP, nonlinear coefficient γ, fiber lengths L, the product of three), γ PL are bigger, and conversion efficiency is higher.But nothing
Method improves conversion efficiency by unlimited increase pump power, and this is because the pump power being input in HNLF can be excited
The limitation of Brillouin threshold (SBS threshold).The research work for having expanded many at present is used to improve SBS threshold,
Method exactly " is shaken " with most.This method makes its power distribution in a smaller frequency spectrum by " shake " pump light
In the range of, so as to keep being significantly reduced on the premise of pumping general power is constant the peak power of pumping.But at the same time,
The method will introduce jittering noise in conversion signal, produce distortion.
In view of above-mentioned defect, the design people is actively subject to research and innovation, to found a kind of new structure based on
The efficient AOWC of highly nonlinear optical fiber, makes it have more the value in industry.
The content of the invention
In order to solve the above technical problems, need not improve SBS threshold it is an object of the invention to provide one kind, pumping need not be shaken
Light, only can be realized as the AOWC of high conversion efficiency by optical fiber.
AOWC of the invention, including the transmitting terminal and receiving terminal connected by optical fiber, wherein
- the transmitting terminal will be input into the optical fiber after flashlight and coupling pump light；
- the optical fiber includes that what is cascaded mixes aluminium optical fiber and germnium doped fiber, and it receives and guides what is exported by the transmitting terminal
The flashlight and pump light, and it is existing using the nonlinear optics that the optical fiber is produced when guiding the flashlight with pump light
As producing conversion light；
- the receiving terminal receives the conversion light of the optical fiber output.
Further, the aluminium optical fiber and the length ratio of germnium doped fiber mixed is 3:2.
Further, the transmitting terminal by the flashlight and pump light with 3：The optical fiber is input into after 7 ratio coupling.
Further, the input power of the pump light is the SBS threshold for mixing aluminium optical fiber.
Further, the transmitting terminal includes signal optical source and pump light source, and the signal optical source is wrapped with pump light source
Include tunable laser sources, amplifier, optical band pass filter and the Polarization Controller being sequentially connected.
Further, the amplifier is erbium-doped fiber amplifier.
Further, it is also associated with optoisolator between the transmitting terminal and the optical fiber.
Further, it is also associated with optical band pass filter between the optical fiber and the receiving terminal.
Further, the receiving terminal is the coherent receiver of the test transmitting photo-signal bit error rate and planisphere.
Further, adjustable attenuator and half can be also sequentially connected between the optical band pass filter and the receiving terminal
Conductor image intensifer.
By such scheme, the present invention at least has advantages below：
1st, it is concatenated together realizing the AOWC side of high conversion efficiency using two sections of different highly nonlinear optical fibers
Case, it has the conversion efficiency and good conversion signal performance of -8dB (in theory with -3.1dB)；
2nd, using aluminium optical fiber and germnium doped fiber cascade is mixed, effectively increase nonlinear phase shift is so as to realize carrying for conversion efficiency
Height, wherein it is, for improving SBS threshold, germnium doped fiber to be used in second segment to mix aluminium optical fiber, it has less dispersion
Slope and decay, are used to make up the loss of optical fiber and improve nonlinear phase shift；
3rd, 10-5Power attenuation during the series bit error rate can be less than the level of 0.5dB.
Described above is only the general introduction of technical solution of the present invention, in order to better understand technological means of the invention,
And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Brief description of the drawings
Fig. 1 is the wavelength convert analogous diagram based on four-wave mixing；
Fig. 2 is the conversion efficiency figure under different pump powers；
Fig. 3 is the result of calculation curve of different incidence wave strong point conversion efficiencies；
Fig. 4 is the experimental configuration of SBS threshold test；
Fig. 5 is two sections of transimission powers of HNLF (round dot) and reflection power (square point) curve, wherein, figure (a) is that 150m mixes
The transimission power (round dot) of aluminium HNLF and reflection power (square point) curve, figure (b) are the transimission power (circles that 100m mixes germanium HNLF
Point) and reflection power (square point) curve；
Fig. 6 is the structural representation of AOWC of the invention；
Fig. 7 is the input/output frequency spectrum of the HNLF in the case of two kinds of incident powers, wherein, the pump power for scheming (a) is
22.7dBm, the pump power for scheming (b) is 26.7dBm；
Fig. 8 is measurement gained conversion efficiency (dB) vs input signals wavelength (nm), wherein, the pump power for scheming (a) is
22.7dBm, the pump power for scheming (b) is 26.7dBm；
Fig. 9 is AOWC conversion signal performance test experimental configuration；
Figure 10 is the planisphere of input signal and conversion signal, wherein, the BTB signals for scheming (a)~(c) are respectively：
1535nm, 1545nm, 1557.5nm, the conversion signal for scheming (d)~(f) are respectively：1565nm、1555nm、1542.5nm；
Figure 11 is the BER performances of BTB signals and conversion signal at different wave length, wherein, scheme the BTB signals of (a)：
1535nm, conversion signal：1565nm, schemes the BTB signals of (b)：1545nm, conversion signal：1555nm, schemes the BTB signals of (c)：
1557.5nm, conversion signal：1542.5nm.
The referred to as Chinese control of figure Chinese and English：TLS：Tunable laser sources；AWG：AWG；MZM：Mach Zeng De
Modulator；EDFA：Erbium-doped fiber amplifier；OBPF：Optical band pass filter；PC：Polarization Controller；Isolator：Optoisolator；
Circulator：Optical circulator；HNLF：Highly nonlinear optical fiber；PM：Light power meter；VOA：Adjustable attenuator；SOA：Semiconductor light
Amplifier；Rx：Coherent receiver.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.Hereinafter implement
Example is not limited to the scope of the present invention for illustrating the present invention.
Efficient AOWC based on highly nonlinear optical fiber has that energy loss is low, processing speed fast and modulation
The features such as form is transparent.For the efficient AOWC based on highly nonlinear optical fiber, if its optical fiber is more long, non-thread
Property coefficient is bigger, and pump power is higher, then its conversion efficiency will be higher.However, the input power of pumping can be excited cloth
In deep pool scattering (SBS) limitation, as a rule optical fiber its SBS threshold more long is lower.In the present invention, it is proposed that a utilization two
Duan Butong highly nonlinear optical fibers are concatenated together realizing the AOWC scheme of high conversion efficiency, and by testing
The conversion efficiency of its -8dB and the superperformance of conversion signal are demonstrate,proved.
Principle and emulation
As shown in figure 1, under the auxiliary of pump light, four-wave mixing can be by signal from a wavelength convert to another ripple
In length.It is ideally to expect that the signal after conversion can have much the same power and performance with input signal.But it is true
On, difference is certainly existed between the two, the difference power between them is defined as the conversion efficiency (CE) of wavelength shifter.And
The size of this conversion efficiency depends on the size of nonlinear phase shift, i.e. nonlinear phase shift is bigger, then conversion efficiency is bigger.
For specified HNLF, its such as fiber lengths, decay and dispersion these parameters are all that fixation cannot change
, wanting to change nonlinear phase shift γ PL must be by changing the input power of pump light.It is to work as front pump shown in Fig. 2
Pu power calculates the conversion efficiency curve of gained respectively when being set to 16dBm, 18dBm and 20dBm.Computer sim- ulation is used
One section of length is 250 meters and mixes germanium HNLF, and its parameter is as follows：Nonlinear coefficient γ=10.8km-1W-1, attenuation alpha=0.8dB/
Km, zero-dispersion wavelength λ0=1544nm, in addition its chromatic dispersion gradient dD=0.006ps/km/nm2.From figure 2 it can be seen that CE meetings
Improved with the increase of pump power.But due to being influenceed by stimulated Brillouin scattering, it is impossible to unlimited increase pumping work(
Rate.For this 250m mix germanium HNLF for, its SBS threshold only has about 18.7dBm.
Compared with the germnium doped fiber of 250m, equal length, nonlinear coefficient γ=6.9W-1km-1, attenuation alpha=6.2dB/
Km, zero-dispersion wavelength λ0=1550nm, chromatic dispersion gradient dD=0.024ps/ (nm2Km aluminium optical fiber of mixing) has SBS thresholds higher
Value, about 26dBm.Fig. 3 is shown the CE curves of the wavelength shifter based on different HNLF.From the dotted line in figure with short stroke
Line can be seen that compared with germanium HNLF is mixed, due to SBS threshold higher, the wavelength shifter of aluminium HNLF being mixed based on 250m
CE than improve 7.8dB or so based on mix germanium HNLF.In order to obtain CE higher, the HNLF by 250m of the invention
It is divided into two sections, is concatenated together by the aluminium HNLF and germanium HNLF that mixes of another section of 100m that mixes of one section of 150m.And their other ginsengs
It is several, it is consistent with what is introduced before.Because the length of HNLF shortens, its SBS threshold can be improved accordingly.Aluminium is mixed for 150m
For HNLF, its SBS threshold can bring up to 28.04dBm, and the SBS threshold for mixing germanium HNLF of 100m can then rise accordingly
To 22.5dBm.The CE curves that will be calculated after this two sections of HNLF cascades are by the solid line illustrated in Fig. 3.It is worth noting that,
The SBS threshold P of aluminium HNLF is mixed in now input pumping light power setting for 150mSBS=28dBm, and its power output is through considering
The SBS threshold of germanium HNLF is just mixed after the loss of the factors such as joint for second segment 100m.Germanium light is mixed with the exclusive use in Fig. 3
It is fine, be used alone and mix aluminium optical fiber and compare, the present invention by 150m mix aluminium HNLF and 100m mix the side that germanium HNLF is concatenated together
Case, either has improvement in terms of the flatness of conversion efficiency or switching bandwith.In addition, when pumping input power is SBS
In the case of threshold value, the CE of three kinds of different schemes (germnium doped fiber, mix aluminium optical fiber, mix aluminium optical fiber and germnium doped fiber cascade) calculates knot
Fruit is displayed in table 1.
The CE result of calculations of 1. 3 kinds of schemes of table
Experiment and result
1st, the SBS threshold test of HNLF
Two sections of SBS thresholds of optical fiber are measured first, to determine input power.Measured using the experimental design shown in Fig. 4
The transimission power of reflection power when input signal passes through HNLF and output.In figure, optical circulator is used for deriving reflected light, and
Light power meter is then for measuring received transmission light and reflected optical power.
In the experiment of test SBS threshold, two sections of incident powers of HNLF are constantly adjusted respectively, record its output end
The reflection power measured at transimission power and circulator, and drawn out respectively in (a) and (b) of Fig. 5 by round dot and point institute of side
The curve of expression.Be can be seen that when input power not yet reaches SBS threshold by curve in figure, the transimission power of output end with
The linear growth of input power, in this case, SBS scatterings almost can be ignored.When input power reaches SBS thresholds
During value, with the increase of incident power, contrast and transimission power, it can be found that power attenuation ratio increases.With further
Increase input power, optical power loss can continue to increase, until power output reaches a stable value.When power continues to increase
When, these increased input powers are almost all reflected back because of SBS effects.As seen from Figure 5,150m mixes aluminium HNLF's
SBS threshold is about 28dBm, and the SBS threshold that 100m mixes germanium HNLF is then 22dBm.
2nd, the measurement of wavelength shifter conversion efficiency
The experimental configuration of AOWC measures conversion efficiency from tunable light source (TLS1) as shown in fig. 6, send out first
The continuous light (CW) for projecting is amplified and by optical band pass filter as signal via erbium-doped optical fiber amplifier EDFA 1
(OBPF1) spontaneous emission noise is filtered.Another continuous light sent by tunable light source (TLS2) is via identical process conduct
Pump light.Flashlight and pump light are passed through 30：70 coupler (flashlight accounts for 30%, pump light account for 70%) be input into together to
In two sections of HNLF being concatenated together.Optoisolator (Isolator) in figure be used for preventing EDFA because SBS and caused by damage.Most
Afterwards, the input of monitoring HNLF measures its conversion efficiency with output spectrum and by spectrometer (OSA).
During measures conversion efficiency, will enter into the signal light power in HNLF and be set to 5dBm, and pump light
Power then changes to 26.7dBm from 22.7dBm.What Fig. 7 showed is exactly when pump power is respectively 22.7dBm and 26.7dBm
HNLF input and output spectrum.Wherein pump wavelength is set to 1550nm, " CW1 ", " CW2 ", " CW3 ", " CW4 ",
" CW5 " and " CW6 " are to be respectively provided with the letter at 1535nm, 1540nm, 1545nm, 1552.5nm, 1557.5nm and 1562.5nm
What number light, and " CW1 " ", " CW2 ' ", " CW3 ' ", " CW4 ' ", " CW5 ' " and " CW6 ' " were then represented is the letter after corresponding conversion
Number.Difference power before and after being changed by measurement signal in figure, can be derived that the conversion efficiency at different wave length.Actually measured
The efficiency curve that conversion efficiency curve is obtained with computer sim- ulation is represented in fig. 8 with dotted line and solid line respectively.Due to EDFA with
The reason for fibre-optical dispersion, causes that experimental result slightly has appearance fluctuation, it is contemplated that the loss of the presence such as device terminal causes to survey in experiment
The CE outlines for obtaining are less than theoretical simulation value, but are matched with computer sim- ulation result substantially.Experiment can be with coincideing for simulation result
Proof can realize this conversion efficiency higher of -3.1dB under the support of low insertion loss device.
3rd, the test of conversion signal performance
In order to assess the performance of conversion signal, the continuous light before being replaced with the QPSK signals of 25Gb/s is tested.
AOWC structure is as shown in Figure 9.By the Mach zehnder modulators (MZM) in figure and random waveform maker
(AWG) the 25Gb/s QPSK signals needed for producing.Adjustable attenuator (VOA) is used for adjusting with semiconductor optical amplifier (SOA) in figure
The OSNR (OSNR) of entire signal light, coherent receiver (Rx) is the bit error rate (BER), the constellation for test signal in addition
Figure.
Be shown in Figure 10 wavelength respectively 1535nm, 1545nm and 1557.5nm input signal (be designated as BTB letter
Number) planisphere of its corresponding conversion signal (wavelength is respectively at 1565nm, 1555nm and 1542.5nm).By contrast,
Both show much the same performance, and also very close (BTB signals are 7% to their error vector magnitude (EVM), are turned in addition
Signal is changed for 8%).
In addition, by adjusting VOA, the OSNR of signal is changed, so as to be capable of the BER of measurement signal at receiving terminal.BTB
Signal and the ber curve of conversion signal, are shown in Figure 11.In figure as can be seen that the power attenuation caused due to wavelength convert very
It is small, when BER is 10-5During series, the power attenuation of conversion signal can be less than the level of 0.5dB.
In sum, it is proposed by the present invention 150m mixed into aluminium HNLF and 100m mix germanium HNLF be concatenated together realizing high turning
The AOWC scheme of efficiency is changed, without using the pumping dither technique of any raising SBS threshold in the program, is only made
The conversion efficiency of -8dB (- 3.1dB can be realized in theory) is can be realized as with commercial HNLF.Additionally, in the QPSK to 25Gb/s
After signal is changed, it is measured 10-5Power attenuation during series BER can be less than the level of 0.5dB.
The above is only the preferred embodiment of the present invention, is not intended to limit the invention, it is noted that for this skill
For the those of ordinary skill in art field, on the premise of the technology of the present invention principle is not departed from, can also make it is some improvement and
Modification, these are improved and modification also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of AOWC, it is characterised in that：Including the transmitting terminal and receiving terminal that are connected by optical fiber, wherein
- the transmitting terminal will be input into the optical fiber after flashlight and coupling pump light；
- the optical fiber includes that what is cascaded mixes aluminium optical fiber and germnium doped fiber, and it receives and guides as described in the transmitting terminal is exported
Flashlight and pump light, and using the nonlinear optical phenomena that the optical fiber is produced when guiding the flashlight with pump light come
Produce conversion light；
- the receiving terminal receives the conversion light of the optical fiber output.
2. AOWC according to claim 1, it is characterised in that：The length for mixing aluminium optical fiber and germnium doped fiber
Degree is than being 3:2.
3. AOWC according to claim 1, it is characterised in that：The transmitting terminal is by the flashlight and pump
Pu light is with 3：The optical fiber is input into after 7 ratio coupling.
4. AOWC according to claim 3, it is characterised in that：The input power of the pump light is described
Mix the SBS threshold of aluminium optical fiber.
5. the AOWC according to claim any one of 1-4, it is characterised in that：The transmitting terminal includes signal
Light source and pump light source, the signal optical source include the tunable laser sources, amplifier, the light belt that are sequentially connected with pump light source
Bandpass filter and Polarization Controller.
6. AOWC according to claim 5, it is characterised in that：The amplifier is Erbium-doped fiber amplifier
Device.
7. AOWC according to claim 5, it is characterised in that：Between the transmitting terminal and the optical fiber also
It is connected with optoisolator.
8. AOWC according to claim 5, it is characterised in that：Between the optical fiber and the receiving terminal also
It is connected with optical band pass filter.
9. AOWC according to claim 8, it is characterised in that：The receiving terminal is the test conversion light
The coherent receiver of signal error rate and planisphere.
10. AOWC according to claim 8, it is characterised in that：The optical band pass filter with it is described
Adjustable attenuator and semiconductor optical amplifier can be also sequentially connected between receiving terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710184102.7A CN106918972A (en) | 2017-03-24 | 2017-03-24 | Aowc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710184102.7A CN106918972A (en) | 2017-03-24 | 2017-03-24 | Aowc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106918972A true CN106918972A (en) | 2017-07-04 |
Family
ID=59461157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710184102.7A Pending CN106918972A (en) | 2017-03-24 | 2017-03-24 | Aowc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106918972A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426907A (en) * | 2019-08-02 | 2019-11-08 | 广东工业大学 | A kind of optical frequency conversion method, device and equipment |
| CN110850660A (en) * | 2019-11-28 | 2020-02-28 | 苏州大学 | All-optical wavelength converter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1770573A (en) * | 2005-09-08 | 2006-05-10 | 中国计量学院 | Optical fibre Raman amplification SBS comb-shaped light source |
| CN101523286A (en) * | 2006-10-10 | 2009-09-02 | 松下电器产业株式会社 | Wavelength converting device and image display device |
| CN103278998A (en) * | 2013-06-25 | 2013-09-04 | 西南交通大学 | Fiber parameter amplification system for improving energy conversion efficiency of pump light to signal light |
| CN206618934U (en) * | 2017-03-24 | 2017-11-07 | 苏州大学 | Aowc |
-
2017
- 2017-03-24 CN CN201710184102.7A patent/CN106918972A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1770573A (en) * | 2005-09-08 | 2006-05-10 | 中国计量学院 | Optical fibre Raman amplification SBS comb-shaped light source |
| CN101523286A (en) * | 2006-10-10 | 2009-09-02 | 松下电器产业株式会社 | Wavelength converting device and image display device |
| CN103278998A (en) * | 2013-06-25 | 2013-09-04 | 西南交通大学 | Fiber parameter amplification system for improving energy conversion efficiency of pump light to signal light |
| CN206618934U (en) * | 2017-03-24 | 2017-11-07 | 苏州大学 | Aowc |
Non-Patent Citations (2)
| Title |
|---|
| J. HANSRYD等: "Increase of the SBS Threshold in a Short Highly Nonlinear Fiber by Applying a Temperature Distribution", 《JOURNAL OF LIGHTWAVE TECHNOLOGY》 * |
| JI WANG等: "The Lowest-loss of 0.35dB/km in an Aluminum-doped SM Optical Fiber", 《IEEE》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426907A (en) * | 2019-08-02 | 2019-11-08 | 广东工业大学 | A kind of optical frequency conversion method, device and equipment |
| CN110426907B (en) * | 2019-08-02 | 2021-08-13 | 广东工业大学 | Optical frequency conversion method, device and equipment |
| CN110850660A (en) * | 2019-11-28 | 2020-02-28 | 苏州大学 | All-optical wavelength converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104216196B (en) | Tunable all-optical microwave photon frequency conversion device without external electric local oscillator | |
| CN104330939B (en) | A kind of SBS wideband adjustables optical fiber delay system | |
| Wong et al. | Continuous-wave fiber optical parametric amplifier with 60-dB gain using a novel two-segment design | |
| Mac Suibhne et al. | WDM transmission at 2μm over low-loss hollow core photonic bandgap fiber | |
| CN105048267A (en) | Intermediate infrared super-continuum spectrum laser light source | |
| Krzczanowicz et al. | Performance estimation of discrete Raman amplification within broadband optical networks | |
| Jamshidifar et al. | Reduction of four-wave-mixing crosstalk in a short fiber-optical parametric amplifier | |
| Vujicic et al. | Performance investigation of IM/DD compatible SSB-OFDM systems based on optical multicarrier sources | |
| MacSuibhne et al. | Wavelength division multiplexing at 2μm | |
| JP2005208515A (en) | Wavelength conversion method and wavelength conversion device | |
| CN106918972A (en) | Aowc | |
| Sabapathi et al. | Combating the effect of nonlinearities in DWDM system | |
| CN206618934U (en) | Aowc | |
| CN109510665A (en) | A kind of adjustable delay combination optical transmission system of ultra wide band | |
| Olonkins et al. | Comparison of semiconductor optical amplifier and discrete Raman amplifier performance in DWDM systems | |
| Iqbal et al. | Performance characterisation of ultra-wideband Raman amplifiers | |
| CN108519163A (en) | The direct modulation light of simulation based on chirp measurement feedback control carries radio frequency link device | |
| Wong et al. | Demonstration of wavelength exchange in a highly-nonlinear fiber | |
| Qian et al. | Seamless all-optical bidirectional wavelength converter | |
| Isoe et al. | Noise figure and pump reflection power in SMF-reach optical fibre for Raman amplification | |
| Sueyoshi et al. | Spectral efficiencies and transmission characteristics of all-optical PAM4 to QPSK and 16QAM converted signals | |
| El Dahdah et al. | 1-Tb/s DWDM long-haul transmission employing a fiber optical parametric amplifier | |
| Rademacher et al. | Experimental investigation of stimulated Raman scattering induced crosstalk-tilt in a homogeneous multi-core fiber | |
| Sabat et al. | Reduction of fwm effect in fiber optic communication system by using dpddmz and circular polarization | |
| Olonkins et al. | Comparison of Single-pump FOPA and Raman Assisted FOPA Performance in a 16 Channel DWDM Transmission System |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170704 |
|
| RJ01 | Rejection of invention patent application after publication |