CN108562972A - Become the controllable THz wave power splitter of output port - Google Patents
Become the controllable THz wave power splitter of output port Download PDFInfo
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- CN108562972A CN108562972A CN201810593258.5A CN201810593258A CN108562972A CN 108562972 A CN108562972 A CN 108562972A CN 201810593258 A CN201810593258 A CN 201810593258A CN 108562972 A CN108562972 A CN 108562972A
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- photonic crystal
- resonant ring
- medium column
- signal input
- column array
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/1225—Basic optical elements, e.g. light-guiding paths comprising photonic band-gap structures or photonic lattices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12083—Constructional arrangements
- G02B2006/1213—Constructional arrangements comprising photonic band-gap structures or photonic lattices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12133—Functions
- G02B2006/12154—Power divider
Abstract
The invention discloses a kind of controllable THz wave power splitters becoming output port, the dielectric posts photonic crystal and the first control signal input terminal between dielectric posts photonic crystal that it includes two-dimension periodic arrangement, second control signal input terminal, first signal input part, second signal input terminal, first signal output end, second signal output end, first photonic crystal resonant ring, second photonic crystal resonant ring, third photonic crystal resonant ring, 4th photonic crystal resonant ring, first to the 8th coupling photons crystal medium column array, when first control signal input terminal and second control signal input terminal continue input control signal, by selection terahertz wave signal is inputted from different signal input parts, it is exported from different signal output ends to control THz wave, realize the controllable THz wave power splitter for becoming output port.The present invention have many advantages, such as simple in structure, controllable, size is small, it is at low cost, be easily integrated.
Description
Technical field
The present invention relates to power splitter more particularly to a kind of controllable THz wave power splitters becoming output port.
Background technology
For terahertz emission in electromagnetic spectrum between microwave and infra-red radiation, the name of terahertz emission derives from it
Frequency of oscillation in 0.1 ~ 10THz or so, in person in electronics, electromagnetic wave and the millimeter wave and submillimeter wave phase of this frequency range
It overlaps；And in field of spectroscopy, its frequency range coincides with far ir ray.For a long time, due to lack high-energy, efficiently
The terahertz emission source of rate, at room temperature steady running and effective THz wave Detection Techniques are quite ripe with development
Microwave technology is compared with optical technology, and Terahertz Technology and related application progress are very slow, and terahertz wave band becomes width
Unique one piece of wave band not yet fully developed and used in wide electromagnetic spectrum, thus it is last by scientific circles to be known as electromagnetic spectrum
" Terahertz gap ".Recently as the breakthrough in terahertz emission source and Detection Techniques, the exclusive advantageous characteristic quilt of THz wave
It was found that and showing huge application prospect, terahertz in the detection of material science, detection of gas, biology and medicine, communication etc.
Hereby the demand of wave functional device is increasingly urgent to.
THz wave power splitter is a kind of important THz wave function element, and THz wave power splitter has become in recent years
The hot and difficult issue studied both at home and abroad.However existing THz wave power splitter mostly there is complicated, delivery efficiency is low,
Equal shortcomings of high cost, so research structure is simple, delivery efficiency is high, at low cost, size is small, the terahertz with controllability
Hereby wave power splitter is significant.
Invention content
The present invention in order to overcome the shortage of prior art, provide a kind of change output port simple in structure, controllable it is controllable too
Hertz wave power splitter.
In order to achieve the above object, technical scheme is as follows：
It is a kind of become output port controllable THz wave power splitter include two-dimension periodic arrangement dielectric posts photonic crystal and be located at
First control signal input terminal, second control signal input terminal, the first signal input part between dielectric posts photonic crystal, second
Signal input part, the first signal output end, second signal output end, the first photonic crystal resonant ring, the second photonic crystal resonance
Ring, third photonic crystal resonant ring, the 4th photonic crystal resonant ring, the first coupling photons crystal medium column array, the second coupling
Photonic crystal dielectric posts array, third coupling photons crystal medium column array, the 4th coupling photons crystal medium column array, the 5th
Coupling photons crystal medium column array, the 6th coupling photons crystal medium column array, the 7th coupling photons crystal medium column array,
8th coupling photons crystal medium column array；The controllable THz wave power splitter left end for becoming output port is equipped with first control signal
Input terminal, the controllable THz wave power splitter right end for becoming output port are equipped with second signal output end, become the controllable of output port
THz wave power splitter upper end is from left to right sequentially equipped with the first signal input part, the first signal output end, second control signal
Input terminal, second signal input terminal, first control signal input terminal by branch-waveguide respectively with the first signal output end, third
Photonic crystal resonant ring is connected, second control signal input terminal by branch-waveguide respectively with second signal output end, second
Photonic crystal resonant ring is connected, and the first signal input part is connected by single mode waveguide and the first photonic crystal resonant ring, the
Binary signal input terminal is connected by single mode waveguide and the 4th photonic crystal resonant ring, is equipped with above the first photonic crystal resonant ring
First coupling photons crystal medium column array, the first photonic crystal resonant ring lower section are equipped with the second coupling photons crystal medium column battle array
Row, the second photonic crystal resonant ring top are equipped with third coupling photons crystal medium column array, and the second photonic crystal resonant ring is right
Side is equipped with the 4th coupling photons crystal medium column array, and being equipped with the 5th coupling photons crystal above third photonic crystal resonant ring is situated between
Matter column array, third photonic crystal resonant ring right are equipped with the 6th coupling photons crystal medium column array, and the 4th photonic crystal is humorous
Ring top shake equipped with the 7th coupling photons crystal medium column array, the 4th photonic crystal resonant ring lower section is equipped with the 8th coupling photons
Crystal medium column array becomes controllable THz wave power splitter first control signal input terminal, the second control signal of output port
Input terminal continues input control signal, when only inputting THz wave from the first signal input part, second control signal input terminal
The control signal of input is exported from second signal output end, when only inputting THz wave from second signal input terminal, the first control
The control signal of signal input part input processed is exported from the first signal output end, when the first signal input part, second signal input
When end inputs THz wave, the first signal output end, second signal output end are exported without THz wave, become output to realize
The controllable THz wave power splitter function of port.
For the dielectric posts photonic crystal along the photonic crystal arrays that X-Z plane is in square periodic distribution, material is silicon,
Refractive index is 3.42, and dielectric posts photonic crystal radius is 40 ~ 42 μm, and the distance between dielectric posts center of circle is 200 ~ 202 μm.It is described
The first photonic crystal resonant ring, the second photonic crystal resonant ring, third photonic crystal resonant ring, the 4th photonic crystal resonant ring
Shape and structure is identical, is formed by central medium column photonic crystal and around the 12 small dielectric posts photonic crystal of surrounding, in
Heart dielectric posts photonic crystal radius is 180 ~ 182 μm, and small dielectric posts photonic crystal radius is 26 ~ 28 μm.First coupling
Photonic crystal dielectric posts array, the second coupling photons crystal medium column array, third coupling photons crystal medium column array, the 4th
Coupling photons crystal medium column array, the 5th coupling photons crystal medium column array, the 6th coupling photons crystal medium column array,
7th coupling photons crystal medium column array, the 8th coupling photons crystal medium column array are by three small dielectric posts photonic crystal
It is in that square periodic distribution forms along X-Z plane, small dielectric posts photonic crystal radius is 26 ~ 28 μm, between the dielectric posts center of circle
Distance is 200 ~ 202 μm.
The present invention change output port controllable THz wave power splitter have it is simple and compact for structure, size is small, convenient for system
Make, it is controllable the advantages that, meet THz wave imaging, medical diagnosis, THz wave communication etc. fields apply requirement.
Description of the drawings
Fig. 1 is the two-dimensional structure schematic diagram for the controllable THz wave power splitter for becoming output port；
Fig. 2 is to become the controllable THz wave power splitter of output port only from the first signal input part input frequency into 0.52THz's
Terahertz wave signal, the frequency of second control signal input terminal input are the control signal of 0.52THz from second signal output end
The steady-state field of output is distributed；
Fig. 3 is to become the controllable THz wave power splitter of output port only from second signal input terminal input frequency into 0.52THz's
Terahertz wave signal, the frequency of first control signal input terminal input are the control signal of 0.52THz from the first signal output end
The steady-state field of output is distributed；
Fig. 4 is that the controllable THz wave power splitter of change output port is defeated from the first signal input part and second signal input terminal simultaneously
Enter the terahertz wave signal that frequency is 0.52THz, the first signal output end, second signal output end export steady without THz wave
State field distribution.
Specific implementation mode
As shown in Figure 1, a kind of controllable THz wave power splitter becoming output port includes the dielectric posts of two-dimension periodic arrangement
Photonic crystal 21 and first control signal input terminal 1, second control signal input terminal between dielectric posts photonic crystal 21
2, the first signal input part 3, second signal input terminal 4, the first signal output end 5, second signal output end 6, the first photon are brilliant
Body resonant ring 7, the second photonic crystal resonant ring 8, third photonic crystal resonant ring 9, the 4th photonic crystal resonant ring 10, the first coupling
The sub- crystal medium column array 11 of closing light, the second coupling photons crystal medium column array 12, third coupling photons crystal medium column battle array
Row 13, the 4th coupling photons crystal medium column array 14, the 5th coupling photons crystal medium column array 15, the 6th coupling photons are brilliant
Body dielectric posts array 16, the 7th coupling photons crystal medium column array 17, the 8th coupling photons crystal medium column array 18；Become defeated
The controllable THz wave power splitter left end of exit port is equipped with first control signal input terminal 1, becomes the controllable Terahertz of output port
Wave power splitter right end is equipped with second signal output end 6, and the controllable THz wave power splitter upper end for becoming output port is from left to right suitable
It is secondary to be equipped with the first signal input part 3, the first signal output end 5, second control signal input terminal 2, second signal input terminal 4,
One control signal input 1 is connected with the first signal output end 5, third photonic crystal resonant ring 9 respectively by branch-waveguide,
Second control signal input terminal 2 is connected with second signal output end 6, the second photonic crystal resonant ring 8 respectively by branch-waveguide
It connects, the first signal input part 3 is connected by single mode waveguide and the first photonic crystal resonant ring 7, and second signal input terminal 4 passes through
Single mode waveguide and the 4th photonic crystal resonant ring 10 are connected, and 7 top of the first photonic crystal resonant ring is equipped with the first coupling photons
Crystal medium column array 11, the lower section of the first photonic crystal resonant ring 7 are equipped with the second coupling photons crystal medium column array 12, and second
8 top of photonic crystal resonant ring is equipped with third coupling photons crystal medium column array 13, and 8 right of the second photonic crystal resonant ring is set
There are the 4th coupling photons crystal medium column array 14,9 top of third photonic crystal resonant ring to be equipped with the 5th coupling photons crystal and be situated between
Matter column array 15,9 right of third photonic crystal resonant ring are equipped with the 6th coupling photons crystal medium column array 16, and the 4th photon is brilliant
The top of body resonant ring 10 is equipped with the 7th coupling photons crystal medium column array 17, and 10 lower section of the 4th photonic crystal resonant ring is equipped with the
Eight coupling photons crystal medium column arrays 18, become output port controllable THz wave power splitter first control signal input terminal 1,
Second control signal input terminal 2 continues input control signal, when only inputting THz wave from the first signal input part 3, second
The control signal that control signal input 2 inputs is exported from second signal output end 6, when only from the input of second signal input terminal 4
When THz wave, the control signal that first control signal input terminal 1 inputs is exported from the first signal output end 5, when the first signal
When input terminal 3, second signal input terminal 4 input THz wave, the first signal output end 5, second signal output end 6 are without terahertz
Hereby wave exports, to realize the controllable THz wave power splitter function of becoming output port.
Along X-Z plane in the photonic crystal arrays of square periodic distribution, material is the dielectric posts photonic crystal 21
Silicon, refractive index 3.42,21 radius of dielectric posts photonic crystal are 40 ~ 42 μm, and the distance between dielectric posts center of circle is 200 ~ 202 μ
m.The first photonic crystal resonant ring 7, the second photonic crystal resonant ring 8, third photonic crystal resonant ring 9, the 4th photon
10 shape and structure of crystal resonant ring is identical, by central medium column photon crystal 19 and around the 12 small dielectric posts light of surrounding
Sub- crystal 20 form, 9 radius of central medium column photon crystal 1 be 180 ~ 182 μm, small 20 radius of dielectric posts photonic crystal be 26 ~
28μm.The first coupling photons crystal medium column array 11, the second coupling photons crystal medium column array 12, third coupling
Photonic crystal dielectric posts array 13, the 4th coupling photons crystal medium column array 14, the 5th coupling photons crystal medium column array
15, the 6th coupling photons crystal medium column array 16, the 7th coupling photons crystal medium column array 17, the 8th coupling photons crystal
Dielectric posts array 18 is in that square periodic distribution forms along X-Z plane by three small dielectric posts photonic crystal 20, small dielectric posts
20 radius of photonic crystal is 26 ~ 28 μm, and the distance between dielectric posts center of circle is 200 ~ 202 μm.
Embodiment 1
Dielectric posts photonic crystal is along the photonic crystal arrays that X-Z plane is in square periodic distribution, and material is silicon, and refractive index is
3.42, dielectric posts photonic crystal radius is 40 μm, and the distance between dielectric posts center of circle is 200 μm.First photonic crystal resonant ring,
Second photonic crystal resonant ring, third photonic crystal resonant ring, the 4th photonic crystal resonant ring shape and structure are identical, by center
Dielectric posts photonic crystal and the 12 small dielectric posts photonic crystal for surrounding surrounding form, and central medium column photonic crystal radius is
180 μm, small dielectric posts photonic crystal radius is 26 μm.First coupling photons crystal medium column array, the second coupling photons crystal
Dielectric posts array, third coupling photons crystal medium column array, the 4th coupling photons crystal medium column array, the 5th coupling photons
Crystal medium column array, the 6th coupling photons crystal medium column array, the 7th coupling photons crystal medium column array, the 8th coupling
Photonic crystal dielectric posts array is in that square periodic distribution forms along X-Z plane by three small dielectric posts photonic crystal, Xiao Jie
Matter column photonic crystal radius is 26 μm, and the distance between dielectric posts center of circle is 200 μm.Become the controllable THz wave work(of output port
The control signal for dividing device first control signal input terminal, second control signal input terminal persistently to input frequency as 0.52THz, first
Signal input part input frequency be 0.52THz terahertz wave signal, second control signal input terminal input control signal from
The steady-state field distribution of second signal output end output is as shown in Figure 2.Become the controllable THz wave power splitter second of output port
Signal input part input frequency be 0.52THz terahertz wave signal, first control signal input terminal input control signal from
The steady-state field distribution of first signal output end output is as shown in Figure 3.Become the controllable THz wave power splitter of output port simultaneously
The terahertz wave signal for being 0.52THz from the first signal input part, second signal input terminal input frequency, the output of the first signal
The steady-state field distribution that end, second signal output end are exported without THz wave is as shown in Figure 4.
Claims (4)
1. a kind of controllable THz wave power splitter becoming output port, it is characterised in that include the dielectric posts light of two-dimension periodic arrangement
Sub- crystal（21）And it is located at dielectric posts photonic crystal（21）Between first control signal input terminal（1）, second control signal it is defeated
Enter end（2）, the first signal input part（3）, second signal input terminal（4）, the first signal output end（5）, second signal output end
（6）, the first photonic crystal resonant ring（7）, the second photonic crystal resonant ring（8）, third photonic crystal resonant ring（9）, the 4th light
Sub- crystal resonant ring（10）, the first coupling photons crystal medium column array（11）, the second coupling photons crystal medium column array
（12）, third coupling photons crystal medium column array（13）, the 4th coupling photons crystal medium column array（14）, the 5th coupling light
Sub- crystal medium column array（15）, the 6th coupling photons crystal medium column array（16）, the 7th coupling photons crystal medium column battle array
Row（17）, the 8th coupling photons crystal medium column array（18）；The controllable THz wave power splitter left end for becoming output port is equipped with
First control signal input terminal（1）, become the controllable THz wave power splitter right end of output port equipped with second signal output end
（6）, the controllable THz wave power splitter upper end for becoming output port is from left to right sequentially equipped with the first signal input part（3）, first
Signal output end（5）, second control signal input terminal（2）, second signal input terminal（4）, first control signal input terminal（1）It is logical
Cross branch-waveguide respectively with the first signal output end（5）, third photonic crystal resonant ring（9）It is connected, second control signal is defeated
Enter end（2）By branch-waveguide respectively with second signal output end（6）, the second photonic crystal resonant ring（8）It is connected, the first letter
Number input terminal（3）Pass through single mode waveguide and the first photonic crystal resonant ring（7）It is connected, second signal input terminal（4）Pass through list
Mould waveguide and the 4th photonic crystal resonant ring（10）It is connected, the first photonic crystal resonant ring（7）Top is equipped with the first coupling light
Sub- crystal medium column array（11）, the first photonic crystal resonant ring（7）Lower section is equipped with the second coupling photons crystal medium column array
（12）, the second photonic crystal resonant ring（8）Top is equipped with third coupling photons crystal medium column array（13）, the second photonic crystal
Resonant ring（8）Right is equipped with the 4th coupling photons crystal medium column array（14）, third photonic crystal resonant ring（9）Top is equipped with
5th coupling photons crystal medium column array（15）, third photonic crystal resonant ring（9）Right is equipped with the 6th coupling photons crystal
Dielectric posts array（16）, the 4th photonic crystal resonant ring（10）Top is equipped with the 7th coupling photons crystal medium column array（17）,
4th photonic crystal resonant ring（10）Lower section is equipped with the 8th coupling photons crystal medium column array（18）, first control signal input
End（1）, second control signal input terminal（2）Continue input control signal, when only from the first signal input part（3）Input Terahertz
When wave, second control signal input terminal（2）The control signal of input is from second signal output end（6）Output, when only from the second letter
Number input terminal（4）When inputting THz wave, first control signal input terminal（1）The control signal of input is from the first signal output end
（5）Output, when the first signal input part（3）, second signal input terminal（4）When inputting THz wave, the first signal output end
（5）, second signal output end（6）No THz wave output, to realize the controllable THz wave power splitter work(for becoming output port
Energy.
2. a kind of controllable THz wave power splitter becoming output port according to claim 1, it is characterised in that described
Dielectric posts photonic crystal（21）It is in the photonic crystal arrays of square periodic distribution along X-Z plane, material is silicon, and refractive index is
3.42, dielectric posts photonic crystal（21）Radius is 40 ~ 42 μm, and the distance between dielectric posts center of circle is 200 ~ 202 μm.
3. a kind of controllable THz wave power splitter becoming output port according to claim 1, it is characterised in that described
First photonic crystal resonant ring（7）, the second photonic crystal resonant ring（8）, third photonic crystal resonant ring（9）, the 4th photon it is brilliant
Body resonant ring（10）Shape and structure is identical, by central medium column photonic crystal（19）With 12 small dielectric posts around surrounding
Photonic crystal（20）Composition, central medium column photonic crystal（19）Radius is 180 ~ 182 μm, small dielectric posts photonic crystal（20）Half
Diameter is 26 ~ 28 μm.
4. a kind of controllable THz wave power splitter becoming output port according to claim 1, it is characterised in that described
First coupling photons crystal medium column array（11）, the second coupling photons crystal medium column array（12）, third coupling photons it is brilliant
Body dielectric posts array（13）, the 4th coupling photons crystal medium column array（14）, the 5th coupling photons crystal medium column array
（15）, the 6th coupling photons crystal medium column array（16）, the 7th coupling photons crystal medium column array（17）, the 8th coupling light
Sub- crystal medium column array（18）By three small dielectric posts photonic crystal（20）It is in square periodic distribution group along X-Z plane
At small dielectric posts photonic crystal（20）Radius is 26 ~ 28 μm, and the distance between dielectric posts center of circle is 200 ~ 202 μm.
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