CN106464622B - A kind of star-like 16QAM signal creating method and device - Google Patents
A kind of star-like 16QAM signal creating method and device Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000010363 phase shift Effects 0.000 claims abstract description 22
- 230000004308 accommodation Effects 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 230000009021 linear effect Effects 0.000 description 10
- 230000009022 nonlinear effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
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- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
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Abstract
The embodiment of the present invention discloses a kind of star-like 16QAM signal creating method and device.The device includes demodulator D, the first coupler C1, the first nonlinear device N1, first filter F1, the second coupler C2, the second nonlinear device N2, wherein: D, for the first QPSK signal to be demodulated into the first OOK signal and the 2nd OOK signal, first OOK signal is sent to C1, the 2nd OOK signal is sent to C2；C1, for being combined the 2nd QPSK signal and the first OOK signal and being sent to N1；First OOK signal and 8PSK signal for the 2nd QPSK signal to be carried out to phase shift under the control of the first OOK signal to obtain 8PSK signal, and are sent to F1 by N1；8PSK signal is sent to C2 for filtering out the first OOK signal by F1；C2, for being combined 8PSK signal and the 2nd OOK signal and being sent to N2；N2, for by 8PSK signal under the control of the 2nd OOK signal the amplitude of accommodation to obtain star-like 16QAM signal.The embodiment of the present invention can reduce power consumption and improve the generating rate of star-like 16QAM signal.
Description
Technical field
The present invention relates to optical technical field more particularly to a kind of star-like 16QAM signal creating methods and device.
Background technique
With the continuous development of the communication technology, the information capacity transmitted in communication is increasing, therefore, is transmitted using optical fiber
Information is to increase the information capacity of transmission.16 quadrature amplitude modulation (the Quadrature as higher order modulation formats
Amplitude Modulation, QAM) modulation format is used in fiber optic communication, and the key of 16QAM modulation format is star-like
The generation of 16QAM signal, a kind of star-like 16QAM signal generation device common at present include laser, electric combiner and phase
Modulator, the but the shortcomings that device are as follows: electric combiner is based on linear effect and handles signal, linear needed for identical output signal value
The input signal values of effect device are greater than the input signal values of nonlinear effect device, and the power of the bigger consumption of signal value is more
It is more, so that the power consumption of device be made to increase；In addition, the optical signal that laser generates does not carry information, therefore needed in electric combiner
On the modulates information to the optical signal that electric signal is carried, due to there is electric signal participation during modulation, lead to telecommunications
Electronics transfer rate in number limits the rate that the device generates star-like 16QAM signal.
Summary of the invention
The embodiment of the invention discloses a kind of star-like 16QAM signal creating method and devices, for reducing power consumption and raising
The generating rate of star-like 16QAM signal.
First aspect of the embodiment of the present invention discloses a kind of star-like 16QAM signal generating apparatus, including demodulator D, the first coupling
Clutch C1, the first nonlinear device N1, first filter F1, the second coupler C2, the second nonlinear device N2, in which:
The input terminal I of the D connects for inputting the first quadrature phase shift keying QPSK signal, the first output end O1 of the D
Connect the first input end I1, the D of the C1 second output terminal O2 connect the C2 first input end I1, the C1
Two input terminal I2 connect the input terminal I of the N1 for inputting the 2nd QPSK signal, the output end O of the C1, and the N1's is defeated
The output end O that outlet O connects the input terminal I, the F1 of the F1 connects the second input terminal I2 of the C2, the output of the C2
End O connects the input terminal I of the N2；
The D will for the first QPSK signal to be demodulated into first switch keying OOK signal and the 2nd OOK signal
The first OOK signal is sent to the C1, and the 2nd OOK signal is sent to the C2；
The C1, for being combined the 2nd QPSK signal and the first OOK signal and being sent to the N1；
The N1, for the 2nd QPSK signal to be carried out to phase shift under the control of the first OOK signal to obtain 8
Phase-shift keying (PSK) psk signal, and the first OOK signal and the 8PSK signal are sent to the F1；
The 8PSK signal is sent to the C2 for filtering out the first OOK signal by the F1；
The C2, for being combined the 8PSK signal and the 2nd OOK signal and being sent to the N2；
The N2, for the amplitude of accommodation to be star-like to obtain under the control of the 2nd OOK signal by the 8PSK signal
16QAM signal.
In conjunction with the embodiment of the present invention in a first aspect, first aspect of the embodiment of the present invention the first possible implementation
In, described device further includes second filter F2, in which:
The signal output end O that the signal input part I of the F2 connects the signal output end O, the F2 of the N2 is described
The output end vo of star-like 16QAM signal generating apparatus；
The N2 is also used to the 2nd OOK signal and the star-like 16QAM signal being sent to the F2；
The F2, for filtering out the 2nd OOK signal, using the star-like 16QAM signal as the star-like 16QAM
The output signal of signal generating apparatus exports.
In conjunction with the possible implementation of the first of first aspect of the embodiment of the present invention or first aspect of the embodiment of the present invention,
In second of possible implementation of first aspect of the embodiment of the present invention, the D is silicon-based micro ring.
In conjunction with the possible implementation of the first of first aspect of the embodiment of the present invention or first aspect of the embodiment of the present invention,
In the third possible implementation of first aspect of the embodiment of the present invention, the C1 and the C2 are multiple-mode interfence coupling
Device.
In conjunction with the possible implementation of the first of first aspect of the embodiment of the present invention or first aspect of the embodiment of the present invention,
In the 4th kind of possible implementation of first aspect of the embodiment of the present invention, the N1 is ridge waveguide.
In conjunction with the possible implementation of the first of first aspect of the embodiment of the present invention or first aspect of the embodiment of the present invention,
In the 5th kind of possible implementation of first aspect of the embodiment of the present invention, the N2 is the silicon nitride waveguides for applying stress.
In conjunction with the possible implementation of the first of first aspect of the embodiment of the present invention or first aspect of the embodiment of the present invention,
In the 6th kind of possible implementation of first aspect of the embodiment of the present invention, the F1 and the F2 are array waveguide grating.
Second aspect of the embodiment of the present invention discloses a kind of star-like 16QAM signal creating method, comprising:
First QPSK signal is demodulated into the first OOK signal and the 2nd OOK signal by demodulator；
2nd QPSK signal and the first OOK signal are combined by the first coupler；
The 2nd QPSK signal is carried out phase shift under the control of the first OOK signal to obtain by the first nonlinear device
Take 8PSK signal；
First filter filters out the first OOK signal；
The 8PSK signal and the 2nd OOK signal are combined by the second coupler；
Second nonlinear device by the 8PSK signal under the control of the 2nd OOK signal amplitude of accommodation to obtain star
Type 16QAM signal.
In conjunction with second aspect of the embodiment of the present invention, in the first possible implementation of second aspect of the embodiment of the present invention
In, second nonlinear device by the 8PSK signal under the control of the 2nd OOK signal amplitude of accommodation to obtain star
After type 16QAM signal, the method also includes:
Second filter filters out the 2nd OOK signal.
In conjunction with the possible implementation of the first of second aspect of the embodiment of the present invention or second aspect of the embodiment of the present invention,
In second of possible implementation of second aspect of the embodiment of the present invention, first nonlinear device is ridge waveguide, institute
Stating the second nonlinear device is the silicon nitride waveguides for applying stress.
In the embodiment of the present invention, the first nonlinear device and the second nonlinear device are based on nonlinear effect and handle signal,
It is more efficient relative to linear unit, to reduce power consumption；Further, since the participation without electric signal, to improve star-like
The generating rate of 16QAM signal.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without any creative labor, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is a kind of structure chart of star-like 16QAM signal generating apparatus disclosed by the embodiments of the present invention；
Fig. 2 is star-like 16QAM signal generating process；
Fig. 3 is the structure chart of the star-like 16QAM signal generating apparatus of another kind disclosed by the embodiments of the present invention；
Fig. 4 is a kind of flow chart of star-like 16QAM signal creating method disclosed by the embodiments 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 the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of star-like 16QAM signal creating method and devices, for reducing power consumption and raising
The generating rate of star-like 16QAM signal.It is described in detail separately below.
Referring to Fig. 1, Fig. 1 is a kind of structure chart of star-like 16QAM signal generating apparatus disclosed by the embodiments of the present invention.Such as
Shown in Fig. 1, the star-like 16QAM signal generating apparatus may include demodulator D, the first coupler C1, the first nonlinear device N1,
First filter F1, the second coupler C2, the second nonlinear device N2, in which:
The input terminal I of D is for inputting the first QPSK signal, the first input end I1, D of the first output end O1 connection C1 of D
Second output terminal O2 connection C2 first input end I1, C1 the second input terminal I2 for input the 2nd QPSK signal, C1's
The second input of the output end O connection C2 of the input terminal I, F1 of the output end O connection F1 of the input terminal I, N1 of output end O connection N1
Hold I2, the input terminal I of the output end O connection N2 of C2；
D, for the first quadrature phase shift keying QPSK signal to be demodulated into first switch keying OOK signal and the 2nd OOK letter
Number, the first OOK signal is sent to C1, the 2nd OOK signal is sent to C2；
C1, for being combined the 2nd QPSK signal and the first OOK signal and being sent to N1；
N1, for the 2nd QPSK signal to be carried out to phase shift under the control of the first OOK signal to obtain 8 phase-shift keying (PSK) PSK
Signal, and the first OOK signal and 8PSK signal are sent to F1；
8PSK signal is sent to C2 for filtering out the first OOK signal by F1；
C2, for being combined 8PSK signal and the 2nd OOK signal and being sent to N2；
N2, for by 8PSK signal under the control of the 2nd OOK signal the amplitude of accommodation to obtain star-like 16QAM signal.
In the present embodiment, the working principle of star-like 16QAM signal generating apparatus shown in FIG. 1 are as follows: input signal includes the
One orthogonal PSK (Quadrature Phase Shift Keying, QPSK) signal and the 2nd QPSK signal；Demodulator D
First QPSK signal is converted into first switch keying (On-Off Keying, OOK) signal and the 2nd OOK signal, by first
OOK signal is sent to the first coupler C1, and the 2nd OOK signal is sent to the second coupler C2；First coupler C1 is by second
The first nonlinear device is sent to after QPSK signal and the combining of the first OOK signal；First nonlinear device is by the 2nd QPSK signal
Phase shift is carried out under the control of the first OOK signal to obtain 8 phase-shift keying (PSK)s (8Phase Shift Keying, 8PSK) signal, and
First OOK signal and 8PSK signal are sent to F1；First filter F1 filters out the first OOK signal, and 8PSK signal is sent
To the second coupler C2；8PSK signal and the combining of the 2nd OOK signal are sent to the second nonlinear device N2 by the second coupler C2；
Second nonlinear device N2 by 8PSK signal under the control of the 2nd OOK signal the amplitude of accommodation to obtain star-like 16QAM signal.Its
In, the first QPSK signal is demodulated into the first OOK signal and the 2nd OOK signal by demodulator D, i.e., is converted to QPSK modulation format
OOK modulation format.
In the present embodiment, the first nonlinear device and the second nonlinear device use nonlinear effect.First QPSK signal
May exist particular kind of relationship between the 2nd QPSK signal, relationship can also be not present, this embodiment is not limited.
In the present embodiment, due to only one input terminal of nonlinear device, and the signal of unbalanced input device has two
It is a, it is therefore, by coupler that two signal combinings are non-linear to be then forwarded to all the way before signal enters nonlinear device
Device.The signal exported from the first nonlinear device includes 8PSK signal and the first OOK signal, if the first OOK signal is defeated
Enter the second nonlinear device, control 8PSK signal is also carried out phase shift by the first OOK signal, leads to not generate star-like 16QAM letter
Number, therefore, the first OOK signal is filtered out by first filter.Wherein, the process that star-like 16QAM signal generates can be as
Shown in Fig. 2.
In the star-like 16QAM signal generating apparatus described in Fig. 1, the first nonlinear device and the second nonlinear device base
Signal is handled in nonlinear effect, it is more efficient relative to linear unit, to reduce power consumption；Further, since without electric signal
Participation, to improve the generating rate of star-like 16QAM signal.
Referring to Fig. 3, Fig. 3 is the structure chart of the star-like 16QAM signal generating apparatus of another kind disclosed by the embodiments of the present invention.
As shown in figure 3, the star-like 16QAM signal generating apparatus may include demodulator D, the first coupler C1, the first nonlinear device
N1, first filter F1, the second coupler C2, the second nonlinear device N2, in which:
The input terminal I of D is for inputting the first QPSK signal, the first input end I1, D of the first output end O1 connection C1 of D
Second output terminal O2 connection C2 first input end I1, C1 the second input terminal I2 for input the 2nd QPSK signal, C1's
The second input of the output end O connection C2 of the input terminal I, F1 of the output end O connection F1 of the input terminal I, N1 of output end O connection N1
Hold I2, the input terminal I of the output end O connection N2 of C2；
D sends the first OOK signal for the first QPSK signal to be demodulated into the first OOK signal and the 2nd OOK signal
To C1, the 2nd OOK signal is sent to C2；
C1, for being combined the 2nd QPSK signal and the first OOK signal and being sent to N1；
N1, for the 2nd QPSK signal to be carried out to phase shift under the control of the first OOK signal to obtain 8PSK signal, and will
First OOK signal and 8PSK signal are sent to F1；
8PSK signal is sent to C2 for filtering out the first OOK signal by F1；
C2, for being combined 8PSK signal and the 2nd OOK signal and being sent to N2；
N2, for by 8PSK signal under the control of the 2nd OOK signal the amplitude of accommodation to obtain star-like 16QAM signal.
As a kind of possible embodiment, which can also include second filter F2, in which:
The signal output end O of the signal output end O, F2 of the signal input part I connection N2 of F2 are that the star-like 16QAM signal is raw
At the output end vo of device；
N2 is also used to the 2nd OOK signal and star-like 16QAM signal being sent to F2；
F2, for filtering out the 2nd OOK signal, using star-like 16QAM signal as the star-like 16QAM signal generating apparatus
Output signal output.
In the present embodiment, the working principle of star-like 16QAM signal generating apparatus shown in Fig. 2 are as follows: input signal includes the
One QPSK signal and the 2nd QPSK signal；First QPSK signal is converted to the first OOK signal and the 2nd OOK signal by demodulator D,
First OOK signal is sent to the first coupler C1, the 2nd OOK signal is sent to the second coupler C2；First coupler C1
The first nonlinear device will be sent to after 2nd QPSK signal and the combining of the first OOK signal；First nonlinear device is by second
QPSK signal carries out phase shift under the control of the first OOK signal to obtain 8PSK signal, and by the first OOK signal and 8PSK signal
It is sent to first filter F1；First filter F1 filters out the first OOK signal, and 8PSK signal is sent to the second coupler
C2；8PSK signal and the combining of the 2nd OOK signal are sent to the second nonlinear device N2 by the second coupler C2；Second non-linear device
The amplitude of accommodation is under the control of the 2nd OOK signal to obtain star-like 16QAM signal by 8PSK signal by part N2, by the 2nd OOK signal
Second filter F2 is sent to star-like 16QAM signal；Second filter F2 filters out the 2nd OOK signal, and star-like 16QAM is believed
Number as the star-like 16QAM signal generating apparatus output signal export.Wherein, the first QPSK signal is demodulated by demodulator D
QPSK modulation format is converted to OOK modulation format by the first OOK signal and the 2nd OOK signal.
In the present embodiment, the first nonlinear device and the second nonlinear device use nonlinear effect.First QPSK signal
May exist particular kind of relationship between the 2nd QPSK signal, relationship can also be not present, this embodiment is not limited.
In the present embodiment, due to only one input terminal of nonlinear device, and the signal of unbalanced input device has two
It is a, it is therefore, by coupler that two signal combinings are non-linear to be then forwarded to all the way before signal enters nonlinear device
Device.The signal exported from the first nonlinear device includes 8PSK signal and the first OOK signal, if the first OOK signal is defeated
Enter the second nonlinear device, control 8PSK signal is also carried out phase shift by the first OOK signal, leads to not generate star-like 16QAM letter
Number, therefore, the first OOK signal is filtered out by first filter.The signal exported from the second nonlinear device includes star-like
The 2nd OOK signal of 16QAM signal, and the device is the device for generating star-like 16QAM signal, therefore, by star-like 16QAM signal
Before output, second filter F2 is needed to filter out the 2nd OOK signal therein.Wherein, the process that star-like 16QAM signal generates can
With as shown in Figure 2.
As a kind of possible embodiment, demodulator D is silicon-based micro ring.
In the present embodiment, since the size of silicon-based micro ring is smaller, thus, it is easy to it is integrated, to improve integrated level.
As a kind of possible embodiment, the first coupler C1 and the second coupler C2 is multi-mode interference coupler.
In the present embodiment, multi-mode interference coupler is easy to realize on piece, to improve integrated level.
As a kind of possible implementation method, the first nonlinear device N1 is ridge waveguide.
In the present embodiment, the first nonlinear device is the waveguide of on piece third-order non-linear, for generating Third-order nonlinearity.
Third-order nonlinearity can be cross-phase modulation effect, four-wave mixing effect, two-photon absorption effect etc., wherein first
Nonlinear device uses cross-phase modulation effect that the 2nd QPSK signal is carried out to phase shift under the control of the first OOK signal to obtain
Take 8PSK signal.Wherein, ridge waveguide is easily achieved Cross-phase Modulation, to improve speed；In addition, its structure and manufacture
Processing step is simple, it is easy to accomplish, to improve integrated level.
As a kind of possible embodiment, the second nonlinear device N2 is the silicon nitride waveguides for applying stress.
In the present embodiment, the second nonlinear device is the waveguide of on piece second nonlinear, for generating second order nonlinear effect.
Second order nonlinear effect can be frequency effect and frequency effect etc., wherein the second nonlinear device uses and frequency effect believes 8PSK
The amplitude of accommodation is to obtain star-like 16QAM signal number under the control of the 2nd OOK signal.Wherein, apply the silicon nitride waveguides of stress
Conversion speed it is very fast, so as to generate the higher order signal of high speed.
As a kind of possible embodiment, first filter F1 and second filter F2 is array waveguide grating.
In the present embodiment, array waveguide grating is easily achieved, to improve integrated level.
In the star-like 16QAM signal generating apparatus described in Fig. 3, the first nonlinear device and the second nonlinear device base
Signal is handled in nonlinear effect, it is more efficient relative to linear unit, to reduce power consumption；Further, since without electric signal
Participation, to improve the generating rate of star-like 16QAM signal.
Referring to Fig. 4, Fig. 4 is a kind of star-like 16QAM signal creating method disclosed by the embodiments of the present invention.As shown in figure 4,
The star-like 16QAM signal creating method may comprise steps of.
First QPSK signal is demodulated into the first OOK signal and the 2nd OOK signal by S401, demodulator.
2nd QPSK signal and the first OOK signal are combined by S402, the first coupler.
2nd QPSK signal is carried out phase shift under the control of the first OOK signal to obtain by S403, the first nonlinear device
8PSK signal.
S404, first filter filter out the first OOK signal.
8PSK signal and the 2nd OOK signal are combined by S405, the second coupler.
The amplitude of accommodation under the control of the 2nd OOK signal is star-like to obtain by 8PSK signal for S406, the second nonlinear device
16QAM signal.
S407, second filter filter out the 2nd OOK signal.
In the present embodiment, the first QPSK signal is converted to the first OOK signal and the 2nd OOK signal by demodulator D, by first
OOK signal is sent to the first coupler C1, and the 2nd OOK signal is sent to the second coupler C2；First coupler C1 is by second
The first nonlinear device is sent to after QPSK signal and the combining of the first OOK signal；First nonlinear device is by the 2nd QPSK signal
Phase shift is carried out under the control of the first OOK signal to obtain 8PSK signal, and the first OOK signal and 8PSK signal are sent to the
One filter F1；First filter F1 filters out the first OOK signal, and 8PSK signal is sent to the second coupler C2；Second coupling
8PSK signal and the combining of the 2nd OOK signal are sent to the second nonlinear device N2 by clutch C2；Second nonlinear device N2 will
The amplitude of accommodation is under the control of the 2nd OOK signal to obtain star-like 16QAM signal for 8PSK signal, by the 2nd OOK signal and star-like
16QAM signal is sent to second filter F2；Second filter F2 filters out the 2nd OOK signal, using star-like 16QAM signal as
The output signal of star-like 16QAM signal generating apparatus exports.Wherein, the first QPSK signal is demodulated into the first OOK letter by demodulator D
Number and the 2nd OOK signal, i.e., QPSK modulation format is converted into OOK modulation format.
In the star-like 16QAM signal creating method described in Fig. 4, the first nonlinear device and the second nonlinear device base
Signal is handled in nonlinear effect, it is more efficient relative to linear unit, to reduce power consumption；Further, since without electric signal
Participation, to improve the generating rate of star-like 16QAM signal.
It is provided for the embodiments of the invention star-like 16QAM signal creating method above and device is described in detail,
Used herein a specific example illustrates the principle and implementation of the invention, and the explanation of above embodiments is only used
In facilitating the understanding of the method and its core concept of the invention；At the same time, for those skilled in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as
Limitation of the present invention.
Claims (10)
1. a kind of star-like 16 quadrature amplitude modulation QAM signal generating apparatus, which is characterized in that including demodulator D, the first coupler
C1, the first nonlinear device N1, first filter F1, the second coupler C2, the second nonlinear device N2, in which:
The input terminal I of the D is for inputting the first quadrature phase shift keying QPSK signal, the first output end O1 connection institute of the D
The second output terminal O2 for stating the first input end I1, the D of C1 connects the first input end I1 of the C2, and the second of the C1 is defeated
Enter to hold I2 for input the 2nd QPSK signal, the output end O of the C1 connects the output end O of the input terminal I, the N1 of the N1
The output end O for the second input terminal I2, the C2 that the output end O for connecting the input terminal I, the F1 of the F1 connects the C2 connects
Meet the input terminal I of the N2；
The D will be described for the first QPSK signal to be demodulated into first switch keying OOK signal and the 2nd OOK signal
First OOK signal is sent to the C1, and the 2nd OOK signal is sent to the C2；
The C1, for being combined the 2nd QPSK signal and the first OOK signal and being sent to the N1；
The N1, for the 2nd QPSK signal to be carried out to phase shift under the control of the first OOK signal to obtain 8 phase shifts
Keying psk signal, and the first OOK signal and the 8PSK signal are sent to the F1；
The 8PSK signal is sent to the C2 for filtering out the first OOK signal by the F1；
The C2, for being combined the 8PSK signal and the 2nd OOK signal and being sent to the N2；
The N2, for by the 8PSK signal under the control of the 2nd OOK signal amplitude of accommodation to obtain star-like 16QAM
Signal.
2. device as described in claim 1, which is characterized in that described device further includes second filter F2, in which:
The output end O that the input terminal I of the F2 connects the output end O, the F2 of the N2 is that the star-like 16QAM signal generates
The output end vo of device；
The N2 is also used to the 2nd OOK signal and the star-like 16QAM signal being sent to the F2；
The F2, for filtering out the 2nd OOK signal, using the star-like 16QAM signal as the star-like 16QAM signal
The output signal of generating means exports.
3. device as claimed in claim 1 or 2, which is characterized in that the D is silicon-based micro ring.
4. device as claimed in claim 1 or 2, which is characterized in that the C1 and C2 is multi-mode interference coupler.
5. device as claimed in claim 1 or 2, which is characterized in that the N1 is ridge waveguide.
6. device as claimed in claim 1 or 2, which is characterized in that the N2 is the silicon nitride waveguides for applying stress.
7. device as claimed in claim 2, which is characterized in that the F1 and F2 is array waveguide grating.
8. a kind of star-like 16QAM signal creating method characterized by comprising
First QPSK signal is demodulated into the first OOK signal and the 2nd OOK signal by demodulator；
2nd QPSK signal and the first OOK signal are combined by the first coupler；
The 2nd QPSK signal is carried out phase shift under the control of the first OOK signal to obtain by the first nonlinear device
8PSK signal；
First filter filters out the first OOK signal；
The 8PSK signal and the 2nd OOK signal are combined by the second coupler；
The amplitude of accommodation under the control of the 2nd OOK signal is star-like to obtain by the 8PSK signal for second nonlinear device
16QAM signal.
9. method according to claim 8, which is characterized in that second nonlinear device is by the 8PSK signal described
After the amplitude of accommodation is under the control of 2nd OOK signal to obtain star-like 16QAM signal, the method also includes:
Second filter filters out the 2nd OOK signal.
10. method as claimed in claim 8 or 9, which is characterized in that first nonlinear device is ridge waveguide, described the
Two nonlinear devices are the silicon nitride waveguides for applying stress.
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| PCT/CN2014/085630 WO2016029477A1 (en) | 2014-08-30 | 2014-08-30 | Method and apparatus for generating a star 16qam signal |
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| US8712251B2 (en) * | 2011-04-19 | 2014-04-29 | Google Inc. | Transport of multiple asynchronous data streams using higher order modulation |
| EP2745441A1 (en) * | 2011-09-08 | 2014-06-25 | Telefonaktiebolaget L M Ericsson (publ) | Path computation in wavelength switched optical networks |
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