CN108663763A - A kind of non-linear temperature compensation device, optical module and method - Google Patents
A kind of non-linear temperature compensation device, optical module and method Download PDFInfo
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- CN108663763A CN108663763A CN201810339930.8A CN201810339930A CN108663763A CN 108663763 A CN108663763 A CN 108663763A CN 201810339930 A CN201810339930 A CN 201810339930A CN 108663763 A CN108663763 A CN 108663763A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/008—Mountings, adjusting means, or light-tight connections, for optical elements with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
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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
- G02B6/12007—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 forming wavelength selective elements, e.g. multiplexer, demultiplexer
- G02B6/12009—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 forming wavelength selective elements, e.g. multiplexer, demultiplexer comprising arrayed waveguide grating [AWG] devices, i.e. with a phased array of waveguides
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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
- G02B6/12007—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 forming wavelength selective elements, e.g. multiplexer, demultiplexer
- G02B6/12009—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 forming wavelength selective elements, e.g. multiplexer, demultiplexer comprising arrayed waveguide grating [AWG] devices, i.e. with a phased array of waveguides
- G02B6/12026—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 forming wavelength selective elements, e.g. multiplexer, demultiplexer comprising arrayed waveguide grating [AWG] devices, i.e. with a phased array of waveguides characterised by means for reducing the temperature dependence
- G02B6/1203—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 forming wavelength selective elements, e.g. multiplexer, demultiplexer comprising arrayed waveguide grating [AWG] devices, i.e. with a phased array of waveguides characterised by means for reducing the temperature dependence using mounting means, e.g. by using a combination of materials having different thermal expansion coefficients
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The present invention relates to technical field of photo communication, provide a kind of non-linear temperature compensation device, optical module and method, wherein, described device includes drive rod and two-way shape memory alloy spring, elastic construction is provided on drive rod, the both ends of two-way shape memory alloy spring are connect with drive rod, and two-way shape memory alloy spring is in parallel with elastic construction；Wherein, two-way shape memory alloy spring is made using the material that two-way shape memory behavior can be achieved, and length is in nonlinear change with temperature；The optical module carries out nonlinear compensation using above-mentioned non-linear temperature compensation device to AWG wavelength.The non-linear behavior that the present invention is varied with temperature according to two-way shape memory alloy material compensates the variation of AWG wavelength with temperature using two-way shape memory alloy spring, simple in structure, be easy to make；And linear compensation is compared, wave length shift smaller, Applicable temperature range is wider.
Description
【Technical field】
The present invention relates to technical field of photo communication, and in particular to a kind of non-linear temperature compensation device, optical module and method.
【Background technology】
Array waveguide grating (Arrayed Waveguide Gratings, be abbreviated as AWG) is based on planar optical waveguide
Optical device is made of input waveguide, input planar waveguide, Waveguide array, output planar waveguide and output waveguide, wherein adjacent battle array
Train wave is led with fixed length difference.Traditional silicon substrate AWG chips are more sensitive to temperature, the drift of General Central wavelength with temperature
It is 0.0118nm/ DEG C to move, and AWG dense wavelength division multiplexing systems to the sufficient center wavelength accuracy of multiplexing demultiplexing device part require compared with
Height, centre wavelength precision needs to control within +/- the 5% of channel spacing, usually at the interval 100GHz, 50GHz and 25GHz
In wavelength-division multiplex system, centre wavelength precision is respectively necessary for control within +/- 0.04nm, +/- 0.02nm and +/- 0.01nm.
Therefore, it is necessary to take steps to the centre wavelength of control AWG chips, can be worked normally in operating ambient temperature range.
In real work situation, the wavelength Xs of AWG chips is not single linear relationship with the changing value of temperature T, and
It is such as formula d λ=adT2It is parabola to have non-linear relation, temperature/wavelength change curve shown in+bdT+c.Existing one
Kind AWG chip temperature compensation techniques are to use Mechanical Moving mode, as described a kind of AWG cores in patent CN 101099098A
Piece compensation schemes, are two parts by AWG chip separations, and two parts of driver driving chip relatively move to compensate
AWG chip wavelength deviates caused by temperature, and wavelength variation values and temperature change value are linear relationships in this scenario, are passed through
After single linear compensation, temperature/wavelength change curve is still parabola；And when AWG chip displacement distances are suitable, AWG
Temperature characterisitic shows as symmetrical compensation, and the wavelength variable quantity from room temperature to high temperature and from room temperature to low temperature is similar；When AWG chips
When moving distance value is bigger than normal, AWG temperature characterisitics show as overcompensation, and the wavelength change from room temperature to high temperature is smaller, but from
Wavelength change when room temperature is to low temperature is bigger；When AWG chip moving distance value is less than normal, AWG temperature characterisitics show as owing benefit
It repays, the wavelength change from room temperature to low temperature is smaller, but wavelength change when from room temperature to high temperature is bigger, and compensated curve is such as
Shown in Fig. 1, it is about 25 DEG C that the point of intersection of curve, which corresponds to abscissa, indicates room temperature.When using above method, figure medium wavelength is become
Change and cannot be satisfied wavelength compensation requirement in larger temperature range, that is to say, that applicable temperature range is relatively narrow.
In order to adapt to the application demand to more wide operating temperature range or more dense wavelength-division multiplex system, some piecewise linearities
Compensation scheme is developed, and such as patent CN107490823A and CN201510216683, these schemes are all driven using more bars,
And different bars works within the scope of different temperature, to generate different compensation rates, example in different temperature ranges
Larger driving is such as generated in high temperature section, temperature-wavelength curve shows as overcompensation, and smaller driving, temperature are generated in low-temperature zone
Degree-wavelength curve shows as undercompensation, to realize that wavelength all has smaller drift value in entire temperature range.But this
In kind of structure, bar relied primarily on whether being acted in different temperatures section the contact of structure with it is non-contact, it is therefore desirable to structure
Processing has higher precision with assembling, usually requires that and reaches sub-micron grade, the part that these factors increase these schemes adds
Work and assembling difficulty.
In consideration of it, it is the art urgent problem to be solved to overcome the defect present in the above-mentioned prior art.
【Invention content】
The technical problem to be solved in the invention is：
In existing temperature compensation means, require the processing of structure and assembling that there is higher essence when realizing nonlinear compensation
Degree, usually requires that and reaches sub-micron grade, increases processing and the assembling difficulty of part；And linear compensation Applicable temperature range compared with
Narrow, wave length shift is larger.
The present invention reaches above-mentioned purpose by following technical solution：
In a first aspect, the present invention provides a kind of non-linear temperature compensation device, including drive rod 101 and round trip shape note
Recall alloy spring 103, one or more elastic constructions 102, the two-way shape memory alloy are provided on the drive rod 101
The both ends of spring 103 are connect with the drive rod 101, and the two-way shape memory alloy spring 103 with it is one or more
A elastic construction 102 is in parallel；Wherein, the two-way shape memory alloy spring 103 is using achievable two-way shape memory behavior
Material make, length with temperature be in nonlinear change.
Preferably, the martensite start temperature T of the two-way shape memory alloy spring 1031Ranging from -40~
85 DEG C, when temperature is higher than T1When, the length of the two-way shape memory alloy spring 103 starts to change.
Preferably, 101 length of the drive rod changes with temperature, and the variation of 101 length of the drive rod is by driving
Expanding with heat and contract with cold for bar material causes with the variation of the length of the two-way shape memory alloy spring 103；Wherein, temperature is less than T1
When, the long variable quantity of 101 bar of the drive rod is dL1, temperature is higher than T1When, the long variable quantity of 101 bar of the drive rod is dL2,
In, dL1Less than dL2。
Preferably, hole slot is provided with inside the drive rod 101, the hole slot is in parallel with the elastic construction 102, described double
The both ends of journey shape memory alloy spring 103 are fixed on hole slot inner wall.
Second aspect, the present invention also provides a kind of nonlinear temperatures formed with above-mentioned non-linear temperature compensation device
Optical module is compensated, the optical module includes non-linear temperature compensation device 1 and AWG, and the AWG is cut into two parts, described
1 both ends of non-linear temperature compensation device are separately connected two parts of the AWG；The non-linear temperature compensation device 1 passes through tune
Whole 101 length of the drive rod carries out nonlinear compensation to the variation of AWG wavelength with temperature.
Preferably, when temperature is less than T1When, the non-linear temperature compensation device 1 is undercompensation to the compensation of AWG；Work as temperature
Degree is higher than T1When, the non-linear temperature compensation device 1 is overcompensation to the compensation of AWG.
Preferably, further include light path pedestal, the light path pedestal is cut to form first area 301 and second area 302,
Two parts of the AWG are respectively arranged on the first area 301 and second area 302, the non-linear temperature compensation dress
1 both ends are set to fix with the first area 301 and second area 302 respectively.
Preferably, the AWG includes input unit 201, input planar waveguide 202, Waveguide array 203, output tablet wave
204 and output device 205 are led, and are sequentially connected fixation；Wherein, the AWG is formed cutting gap 206 by cutting, described to cut
Slot gap 206 be located at it is described input planar waveguide 202 the Waveguide array 203 or it is described output planar waveguide 204 it is arbitrary
At position.
The third aspect carries out AWG wavelength with above-mentioned non-linear temperature compensation optical module the present invention also provides a kind of
The method of non-linear temperature compensation, the method are：When the temperature is changed, 101 bar personal attendant's temperature of the drive rod is in non-linear
Variation, and then drive two parts relative movement of the AWG；Wherein, the bar length variation of the drive rod 101 is by driving bar material
Expand with heat and contract with cold and cause with the variation of the length of the two-way shape memory alloy spring 103, become by bar length caused by expanding with heat and contract with cold
Change is directly proportional to temperature, and the bar length variation caused by the two-way shape memory alloy spring 103 and spring strain recovery rate η have
It closes；Wherein, η changes with nonlinear temperature.
Preferably, the variable quantity dL such as formulas of bar personal attendant's temperature of the drive rod 101：
Wherein, L is the drive rod 101 in T1Under length, α be drive bar material coefficient of thermal expansion, dT is temperature change, K1With
K2The rigidity of respectively described elastic construction 102 and the two-way shape memory alloy spring 103, LMAnd LAIt is respectively described double
Length of the journey shape memory alloy spring 103 under pure martensitic state and pure austenitic state.
The beneficial effects of the invention are as follows：
In a kind of non-linear temperature compensation device provided by the invention, optical module and method, closed according to two-way shape memory
The non-linear behavior that golden material varies with temperature carries out the variation of wavelength with temperature using two-way shape memory alloy spring non-
Linear compensation, it is simple in structure, it is easy to make；And linear compensation is compared, wave length shift smaller, Applicable temperature range is wider, makes
The wavelength shift of AWG chips can control in smaller range in -40 DEG C~85 DEG C sections.
【Description of the drawings】
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described.It should be evident that drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of existing AWG wavelength variation with temperature curve graph under different compensation effects；
Fig. 2 is a kind of non-linear temperature compensation apparatus structure schematic diagram provided in an embodiment of the present invention；
Fig. 3 is a kind of typical power curve of two-way shape memory alloy spring provided in an embodiment of the present invention；
Fig. 4 is another non-linear temperature compensation apparatus structure schematic diagram provided in an embodiment of the present invention；
Fig. 5 is a kind of non-linear temperature compensation optical module structure schematic diagram provided in an embodiment of the present invention；
Fig. 6 is a kind of change curve of the AWG wavelength with temperature after non-linear temperature compensation provided in an embodiment of the present invention
Figure；
Fig. 7 is another non-linear temperature compensation optical module structure schematic diagram provided in an embodiment of the present invention.
【Specific implementation mode】
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In the description of the present invention, the fingers such as term "inner", "outside", " longitudinal direction ", " transverse direction ", "upper", "lower", "top", "bottom"
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention rather than
It is required that the present invention must be with specific azimuth configuration and operation, therefore it is not construed as limitation of the present invention.
In various embodiments of the present invention, symbol "/" indicate simultaneously tool there are two types of function meaning, and for symbol " A with/
Or B " then shows that the combination between the front and back object connected by the symbol includes " A ", " B ", " A and B " three kinds of situations.
In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other not
Conflict is constituted to can be combined with each other.With regard to refer to the attached drawing and embodiment, in conjunction with coming, the present invention will be described in detail below.
Embodiment 1：
An embodiment of the present invention provides a kind of non-linear temperature compensation devices, as shown in Fig. 2, including drive rod 101 and double
Journey shape memory alloy spring 103 is provided with one or more elastic constructions 102, the round trip shape on the drive rod 101
The both ends of memory alloy spring 103 are connect with the drive rod 101, and the two-way shape memory alloy spring 103 with it is described
One or more elastic constructions 102 are in parallel；Wherein, the two-way shape memory alloy spring 103 is using achievable round trip shape
The material of memory behavior is made, and length is in nonlinear change with temperature.
A kind of non-linear temperature compensation device provided by the invention, varies with temperature according to two-way shape memory alloy material
Non-linear behavior, use two-way shape memory alloy spring non-linear to realize as parts, it is simple in structure, be easy to make
Make.
Such as Fig. 2, in embodiments of the present invention, there are two elastic construction 102, the elasticity for setting on the drive rod 101
Structure 102 can be symmetricly set on the middle position of 101 body of rod of the drive rod, and hole is provided with inside 101 body of rod of the drive rod
Slot, and the hole slot is in parallel with described two elastic constructions 102,103 left end of two-way shape memory alloy spring is fixed on
In hole slot inner left wall, 103 right end of two-way shape memory alloy spring is fixed on the right side of hole slot on inner wall, then fixed to complete
The two-way shape memory alloy spring 103 can be in parallel with described two elastic constructions 102 afterwards.When the two-way shape memory closes
When golden spring 103 stretches, the drive rod 101 can realize synchronization telescope by the elastic construction 102.
The two-way shape memory alloy spring 103 is made using the material that two-way shape memory behavior can be achieved, such as
NiTi or NiTiCu, and the two-way shape memory alloy spring 103 has the characteristics that narrow lag, martensitic traoformation start
Temperature T1Within the scope of -40~85 DEG C, T in the embodiment of the present invention1It is preferably located near 25 DEG C of room temperature, the round trip shape note
The kinetic curve for recalling alloy spring 103 is as shown in Figure 3.
The principle and implementation method of non-linear temperature compensation device of the present invention are as follows：
Two-way shape memory alloy is a kind of functional material, has double-pass memory effect, during being heated or cooled, note
Recall alloy " can spontaneously remember " two kinds of high temperature austenitic figure and low temperature martensitic figure not similar shapes under the action of no external force
Shape.If LMFor length of the two-way shape memory alloy spring 103 under pure martensitic state, LARemember for the round trip shape
Recall length of the alloy spring 103 under pure austenitic state, LTIt is the two-way shape memory alloy spring 103 in different temperatures
Length under T, then shape memory strain recovery rate η formula (1) expressions：
Wherein, many factors such as η and material, structure and round trip memory training mechanism are related.From figure 3, it can be seen that institute
Stating the length of two-way shape memory alloy spring 103, to vary with temperature be nonlinear, and non-linear drive may be implemented.Wherein,
When temperature is less than T1When, it is zero that spring, which strains recovery rate η, and the length of the two-way shape memory alloy spring 103 is constant at this time,
The length L being maintained as under martensitic stateM；When temperature is higher than T1When, the length of the two-way shape memory alloy spring 103
Start to change.
When the temperature is changed, 101 length of the drive rod changes with temperature, and the drive rod (101) length becomes
Change and is caused with the variation of the length of the two-way shape memory alloy spring (103) by expanding with heat and contract with cold for driving bar material；Wherein, warm
Degree is less than T1When, the long variable quantity of drive rod (101) bar is dL1, temperature is higher than T1When, drive rod (101) the bar length variation
Amount is dL2, wherein dL1Less than dL2。
Concrete principle is as follows：The rigidity of elastic construction 102 is K on the drive rod 1011, the two-way shape memory conjunction
The rigidity of golden spring 103 is K2, shown in 101 length variation with temperature of the drive rod such as formula (2)：
Wherein, L is the drive rod 101 in room temperature T1Under length, α is the coefficient of thermal expansion for driving bar material, and dT is
Temperature change, dL are 101 length variation with temperature amount of the drive rod.By formula (1) it is found that η changes with nonlinear temperature,
Therefore, dL is also nonlinear change with temperature.For example, the two-way shape memory alloy spring 103 is preset as compression spring, when
Temperature is less than T1When, it is zero that spring, which strains recovery rate η, such as Fig. 3, then the length variable quantity dL of the drive rod 101 at this time1By public affairs
DT decisions of L α in formula (2)；When temperature is more than T1When, spring starts to extend, and spring strain recovery rate η also gradually increases, and such as schemes
3, then the length variable quantity dL of the drive rod 101 at this time2By L α in formula (2) dT andItem is common certainly
It is fixed, it also just will produce the driving of bigger.Therefore, in low temperature, (temperature is less than T to described device1) when drive volume it is smaller, high temperature (temperature
Degree is more than T1) when drive volume it is larger, i.e. dL1Less than dL2.The principle of temperature-compensating, quilt are carried out to AWG according to Mechanical Moving mode
The two-part relative displacement dx of AWG chips of segmentation is provided by drive rod, i.e. dx=dL can be real then when it is applied in AWG
Undercompensation now is carried out to AWG from room temperature to low temperature, overcompensation is carried out to AWG from room temperature to high temperature.
According to above-mentioned compensation principle, can also be explained further the two-way shape memory alloy spring 103 and described
The meaning in parallel of elastic construction 102：It is micron order, two-way memory alloy spring to compensate two-part relative displacement dx needed for AWG
Deflection be η (LA-LM), if the simple deflection η (L with two-way memory alloy springA-LM) compensate, then bullet
The making precision of spring need to be micron dimension, this is very difficult.Two-way shape memory alloy spring is in parallel with elastic construction
Afterwards, the deflection of parallel-connection structure isThen the making required precision of two-way shape memory alloy spring reduces,
Manufacture difficulty reduces.Preferably, K1>>K2.
On the basis of the embodiment of the present invention, can also changing in structure type be carried out to two-way shape memory alloy spring
Change, the change of number of springs and the change of alloy material, principle is similar with implementation method with the embodiment of the present invention, at this
Within the protection domain of invention, details are not described herein again.
Embodiment 2：
On the basis of embodiment 1, the embodiment of the present invention 2 additionally provides another non-linear temperature compensation device, such as Fig. 4
It is shown, it is with the main distinction of 1 described device of embodiment：Carry out fixed spring without opening up hole slot inside drive rod, but
Increase fixed-block-architecture (FBA), being fixedly connected for two-way shape memory alloy spring and drive rod is realized by fixed block.
Concrete structure such as Fig. 4, described device include drive rod 101, the fixation of two-way shape memory alloy spring 103, first
Block 104, the second fixed block 105 and third fixed block 106 are provided with one or more elastic constructions on the drive rod 101
102, and the two-way shape memory alloy spring 103 is in parallel with one or more of elastic constructions 102；Implement in the present invention
In example, there are one elastic constructions 102, the elastic construction 102 may be provided at the drive rod for setting on the drive rod 101
The middle position of 101 bodies of rod.It is solid that the left and right ends of the two-way shape memory alloy spring 103 are separately fixed at described first
Determine on block 104 and the second fixed block 105, the left and right ends of the drive rod 101 are separately fixed at 104 He of the first fixed block
On third fixed block 106, then the two-way shape memory alloy spring 103 can be parallel with the drive rod 101 after the completion of fixing.
When the two-way shape memory alloy spring 103 stretches, the drive rod 101 can be realized together by the elastic construction 102
Step is flexible.
The two-way shape memory alloy spring 103 is made using the material that two-way shape memory behavior can be achieved, such as
NiTi or NiTiCu, length is in nonlinear change with temperature, and the two-way shape memory alloy spring 103 is with narrow stagnant
Feature afterwards, martensite start temperature T1Within the scope of -40~85 DEG C, T in the embodiment of the present invention1It is preferably located at room
Near 25 DEG C of temperature, the kinetic curve of the two-way shape memory alloy spring 103 is as shown in Figure 3.
The principle and implementation method of non-linear temperature compensation device described in the embodiment of the present invention 2 are similar with embodiment 1, this
Place repeats no more；A kind of non-linear temperature compensation device that the embodiment of the present invention 2 provides, also according to two-way shape memory alloy
The non-linear behavior that material varies with temperature uses two-way shape memory alloy spring non-linear to realize as parts, knot
Structure is simple, is easy to make.
On the basis of the embodiment of the present invention, can also changing in structure type be carried out to two-way shape memory alloy spring
Change, the change of number of springs and the change of alloy material, within protection scope of the present invention, details are not described herein again.
Embodiment 3：
On the basis of embodiment 1, the embodiment of the present invention 3 additionally provides a kind of non-linear temperature compensation optical module, uses
Non-linear temperature compensation device described in embodiment 1, such as Fig. 5, the optical module include 1 He of non-linear temperature compensation device
AWG, the AWG are cut into two parts, and 1 both ends of non-linear temperature compensation device are separately connected two parts of the AWG；
The non-linear temperature compensation device 1 carries out the variation of AWG wavelength with temperature non-by adjusting 101 length of the drive rod
Linear compensation.
A kind of non-linear temperature compensation optical module provided by the invention, uses the nonlinear temperature described in embodiment 1
Compensation device carries out nonlinear compensation using two-way shape memory alloy spring to the variation of wavelength with temperature, simple in structure, easily
In making；And compare linear compensation, wave length shift smaller, Applicable temperature range is wider, make the wavelength shifts of AWG chips-
40 DEG C~85 DEG C sections can control in smaller range.
Such as Fig. 5, the optical module further includes light path pedestal, and the light path pedestal is cut to form first area 301 and
The two parts in two regions 302, the AWG are respectively arranged on the first area 301 and second area 302, described non-linear
The left and right ends of temperature compensation means 1 are fixed with the first area 301 and second area 302 respectively, i.e. the drive rod 101
The ends a, the ends b (such as Fig. 2) fix with the first area 301 and second area 302 respectively.The AWG chip assemblies include defeated
Enter device 201, input planar waveguide 202, Waveguide array 203, output planar waveguide 204 and output device 205, and is sequentially connected
It is fixed；The input unit 201 is coupling on the end face of the input planar waveguide 202, and the output device 205 is coupling in institute
On the end face for stating output planar waveguide 204；Wherein, the AWG chip assemblies are formed cutting gap 206 by cutting, described to cut
Slot gap 206 can be located at times of the input planar waveguide 202 or the Waveguide array 203 or the output planar waveguide 204
At meaning position.
The principle and implementation method of non-linear temperature compensation device of the present invention are as follows：
By in embodiment 1 to the introduction of the non-linear temperature compensation device 1 it is found that when the temperature is changed, the driving
The length of bar 101 changes with nonlinear temperature, and when 101 length of drive rod changes, the ends a and the ends b of drive rod 101 can drive respectively
The first area 301 and second area 302 move, then relative displacement occurs for the first area 301 and second area 302,
And then relative displacement occurs for the two parts for making the AWG cut open, to carry out non-linear benefit to the variation of AWG wavelength with temperature
It repays.
When temperature is less than T1When, it is zero that spring, which strains recovery rate η, 103 this duration of the two-way shape memory alloy spring
It spends constant, does not work to the variation of the length of drive rod 101, then when the temperature is changed, the length of the drive rod 101 changes
dL1For L α dT, drive displacement is smaller, and the compensation to AWG wavelength is in undercompensation state；In the non-linear temperature compensation device 1
Two-way shape memory alloy spring 103 is made as compression spring in advance, when temperature is more than T1When, spring starts to extend, then when the temperature is changed, institute
State the length variation dL of drive rod 1012For
That is dL2＞ dL1, that is to say, that drive displacement at this time is larger, and the compensation to AWG wavelength is in overcompensation state.Obtained AWG
Temperature compensation curve in -40~85 DEG C of temperature ranges as shown in fig. 6, all have smaller wavelength shift.
Embodiment 4：
On the basis of embodiment 2, the embodiment of the present invention 4 additionally provides another non-linear temperature compensation optical module, fortune
With the non-linear temperature compensation device described in embodiment 2, such as Fig. 7, the optical module includes 1 He of non-linear temperature compensation device
AWG, the AWG are cut into two parts, and 1 both ends of non-linear temperature compensation device are separately connected two parts of the AWG；
The non-linear temperature compensation device 1 carries out the variation of AWG wavelength with temperature non-by adjusting 101 length of the drive rod
Linear compensation.
A kind of non-linear temperature compensation optical module provided by the invention, uses the nonlinear temperature described in embodiment 1
Compensation device carries out nonlinear compensation using two-way shape memory alloy spring to the variation of wavelength with temperature, simple in structure, easily
In making；And compare linear compensation, wave length shift smaller, Applicable temperature range is wider, make the wavelength shifts of AWG chips-
40 DEG C~85 DEG C sections can control in smaller range.
Such as Fig. 7, the optical module further includes light path pedestal, and the light path pedestal is cut to form first area 301 and
The two parts in two regions 302, the AWG are respectively arranged on the first area 301 and second area 302, described non-linear
The left and right ends of temperature compensation means 1 are fixed with the first area 301 and second area 302 respectively, i.e., described first fixes
Block 104 (such as Fig. 4) and the first area 301 are fixed, second fixed block 105 and third fixed block 106 (such as Fig. 4) with
The second area 302 is fixed.The AWG chip assemblies include input unit 201, input planar waveguide 202, Waveguide array
203, planar waveguide 204 and output device 205 are exported, and is sequentially connected fixation；The input unit 201 is coupling in the input
On the end face of planar waveguide 202, the output device 205 is coupling on the end face of the output planar waveguide 204；Wherein, institute
It states AWG chip assemblies and is formed cutting gap 206 by cutting, the cutting gap 206 can be located at the input planar waveguide 202
Or any position of the Waveguide array 203 or the output planar waveguide 204.
The principle and implementation method of non-linear temperature compensation device of the present invention are as follows：
By in embodiment 2 to the introduction of the non-linear temperature compensation device 1 it is found that when the temperature is changed, the driving
The length of bar 101 changes with nonlinear temperature, and when 101 length of drive rod changes, first fixed block 104 can drive described the
One region 301 is moved, and second fixed block 105 and the third fixed block 106 can drive the second area 302 to move,
Then relative displacement occurs for the first area 301 and second area 302, and then phase occurs for the two parts for making the AWG cut open
To displacement, to carry out nonlinear compensation to the variation of AWG wavelength with temperature.
When temperature is less than T1When, it is zero that spring, which strains recovery rate η, 103 this duration of the two-way shape memory alloy spring
It spends constant, does not work to the variation of the length of drive rod 101, then when the temperature is changed, the length of the drive rod 101 changes
dL1For L α dT, drive displacement is smaller, and the compensation to AWG wavelength is in undercompensation state；In the non-linear temperature compensation device 1
Two-way shape memory alloy spring 103 is made as compression spring in advance, when temperature is more than T1When, spring starts to extend, then when the temperature is changed, institute
State the length variation dL of drive rod 1012For
That is dL2＞ dL1, that is to say, that drive displacement at this time is larger, and the compensation to AWG wavelength is in overcompensation state.Obtained AWG
Temperature compensation curve in -40~85 DEG C of temperature ranges as shown in fig. 6, all have smaller wavelength shift.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of non-linear temperature compensation device, which is characterized in that including drive rod (101) and two-way shape memory alloy spring
(103), one or more elastic constructions (102), the two-way shape memory alloy spring are provided on the drive rod (101)
(103) both ends are connect with the drive rod (101), and the two-way shape memory alloy spring (103) with it is one or
Multiple elastic constructions (102) are in parallel；Wherein, the two-way shape memory alloy spring (103) is remembered using round trip shape can be achieved
The material for recalling behavior is made, and length is in nonlinear change with temperature.
2. non-linear temperature compensation device according to claim 1, which is characterized in that the two-way shape memory alloy bullet
The martensite start temperature T of spring (103)1Ranging from -40~85 DEG C, when temperature be higher than T1When, the two-way shape memory
The length of alloy spring (103) starts to change.
3. non-linear temperature compensation device according to claim 2, which is characterized in that drive rod (101) length with
Temperature changes, and the variation of the drive rod (101) length is remembered by expanding with heat and contract with cold for driving bar material with the round trip shape
The length variation for recalling alloy spring (103) causes；Wherein, temperature is less than T1When, the long variable quantity of drive rod (101) bar is
dL1, temperature is higher than T1When, the long variable quantity of drive rod (101) bar is dL2, wherein dL1Less than dL2。
4. non-linear temperature compensation device according to claim 1, which is characterized in that opened inside the drive rod (101)
There is hole slot, the hole slot is in parallel with the elastic construction (102), and the both ends of the two-way shape memory alloy spring (103) are solid
It is scheduled on hole slot inner wall.
5. a kind of non-linear temperature compensation optical module, which is characterized in that including any nonlinear temperatures of claim 1-4
Compensation device (1) and AWG, the AWG are cut into two parts, and non-linear temperature compensation device (1) both ends are separately connected
Two parts of the AWG；The non-linear temperature compensation device (1) is by adjusting the drive rod (101) length, to AWG waves
Long variation with temperature carries out nonlinear compensation.
6. non-linear temperature compensation optical module according to claim 5, which is characterized in that when temperature is less than T1When, it is described non-
Linear temperature compensation device (1) is undercompensation to the compensation of AWG；When temperature is higher than T1When, the non-linear temperature compensation device
(1) it is overcompensation to the compensation of AWG.
7. non-linear temperature compensation optical module according to claim 5, which is characterized in that further include light path pedestal, it is described
Light path pedestal is cut to form first area (301) and second area (302), and two parts of the AWG are respectively arranged at described
On first area (301) and second area (302), non-linear temperature compensation device (1) both ends respectively with firstth area
Domain (301) and second area (302) are fixed.
8. non-linear temperature compensation optical module according to claim 5, which is characterized in that the AWG includes input unit
(201), input planar waveguide (202), Waveguide array (203), output planar waveguide (204) and output device (205), and successively
It is connected and fixed；Wherein, the AWG is formed cutting gap (206) by cutting, and the cutting gap (206) is located at the input
Any position of planar waveguide (202) or the Waveguide array (203) or the output planar waveguide (204).
9. a kind of non-linear temperature compensation method, which is characterized in that mended using any nonlinear temperatures of claim 5-8
Optical module is repaid, when the temperature is changed, drive rod (101) bar personal attendant's temperature is in nonlinear change, and then drives the AWG's
Two parts relatively move；
Wherein, the bar length variation of the drive rod (101) is closed by expanding with heat and contract with cold for driving bar material with the two-way shape memory
The length variation of golden spring (103) causes, and the bar length variation caused by expanding with heat and contract with cold is directly proportional to temperature, by the round trip shape
Bar length variation caused by memory alloy spring (103) is related with spring strain recovery rate η；Wherein, η changes with nonlinear temperature.
10. non-linear temperature compensation method according to claim 9, which is characterized in that drive rod (101) the bar personal attendant
The variable quantity dL such as formulas of temperature：
Wherein, L is the drive rod (101) in T1Under length, α be drive bar material coefficient of thermal expansion, dT be temperature change
Change, K1And K2The rigidity of respectively described elastic construction (102) and the two-way shape memory alloy spring (103), LMAnd LAPoint
It Wei not length of the two-way shape memory alloy spring (103) under pure martensitic state and pure austenitic state.
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| PCT/CN2018/123409 WO2019200961A1 (en) | 2018-04-16 | 2018-12-25 | Nonlinear temperature compensation device, optical module and method |
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| CN110320595A (en) * | 2019-05-29 | 2019-10-11 | 武汉光迅科技股份有限公司 | Compensation device, array waveguide grid chip and compensation method |
| WO2019200961A1 (en) * | 2018-04-16 | 2019-10-24 | 武汉光迅科技股份有限公司 | Nonlinear temperature compensation device, optical module and method |
| CN110596846A (en) * | 2019-09-20 | 2019-12-20 | 武汉光迅科技股份有限公司 | Etalon packaging structure and wavelength locking device |
| CN114743825A (en) * | 2022-06-09 | 2022-07-12 | 武汉黉门电工科技有限公司 | Isolating switch and method for monitoring on-off state of isolating switch |
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| WO2019200961A1 (en) | 2019-10-24 |
| CN108663763B (en) | 2019-10-29 |
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