CN108663763B - 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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- CN108663763B CN108663763B CN201810339930.8A CN201810339930A CN108663763B CN 108663763 B CN108663763 B CN 108663763B CN 201810339930 A CN201810339930 A CN 201810339930A CN 108663763 B CN108663763 B CN 108663763B
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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)
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- 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 into 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 to AWG wavelength using above-mentioned non-linear temperature compensation device.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, and structure is simple, is easy to make；And linear compensation is compared, wave length shift is smaller, and 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 technique]
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 chip is more sensitive to temperature, the drift of General Central wavelength with temperature
Moving is 0.0118nm/ DEG C, and AWG dense wavelength division multiplexing system to the sufficient center wavelength accuracy of multiplexing demultiplexing device part require compared with
Height, central wavelength precision needs to control within +/- the 5% of channel spacing, usually at the interval 100GHz, 50GHz and 25GHz
In wavelength-division multiplex system, central wavelength precision is respectively necessary for control within +/- 0.04nm, +/- 0.02nm and +/- 0.01nm.
Therefore, it is necessary to take steps to the central wavelength of control AWG chip, can be worked normally in operating ambient temperature range.
In real work situation, the wavelength X of AWG chip is not single linear relationship with the changing value of temperature T, and
It is such as formula d λ=adT2There is non-linear relation, temperature/wavelength change curve is parabola shown in+bdT+c.Existing one
Kind AWG chip temperature compensation technique is using Mechanical Moving mode, as described a kind of AWG core in patent CN 101099098A
AWG chip separation is two parts by piece compensation schemes, and two parts relative movement of driver driving chip is to compensate
AWG chip wavelength is deviated as caused by temperature, and wavelength variation values and temperature change value are linear relationships in this scenario, is passed through
After single linear compensation, temperature/wavelength change curve is still parabola；And when AWG chip moving distance is 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 chip
When moving distance value is bigger than normal, AWG temperature characterisitic shows 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 characterisitic shows as underfill
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 be unable to satisfy wavelength compensation requirement in biggish 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
Biggish driving such as is generated in high temperature section, temperature-wavelength curve shows as overcompensation, generates lesser driving, temperature in low-temperature zone
Degree-wavelength curve shows as undercompensation, to realize that wavelength all has lesser drift value over the 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 and assembling precision with higher, usually require that and reach sub-micron grade, the part that these factors increase these schemes adds
Work and assembling difficulty.
In consideration of it, overcoming defect present in the above-mentioned prior art is the art urgent problem to be solved.
[summary of the invention]
The technical problem to be solved in the invention is:
In existing temperature compensation means, the processing of structure is required when realizing nonlinear compensation and assembles essence with higher
Degree, usually requires that and reaches sub-micron grade, increases the processing and 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 be made into, length with temperature be in nonlinear change.
Preferably, the martensite start temperature T of the two-way shape memory alloy spring 1031Range be -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 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 lower than T1
When, the long variable quantity of 101 bar of drive rod is dL1, temperature is higher than T1When, the long variable quantity of 101 bar of 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 lower 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.
It preferably, further include optical path pedestal, the optical 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
It is fixed with the first area 301 and second area 302 respectively to set 1 both ends.
Preferably, the AWG includes input unit 201, input planar waveguide 202, Waveguide array 203, output plate 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 any
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 as follows: when the temperature is changed, 101 bar personal attendant's temperature of drive rod is in non-linear
Variation, and then drive two parts relative movement of the AWG；Wherein, the long variation of the bar 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 caused by expanding with heat and contract with cold is long
Change is directly proportional to temperature, and the long variation of the bar as caused by the two-way shape memory alloy spring 103 has with spring strain recovery rate η
It closes；Wherein, η changes with nonlinear temperature.
Preferably, the variable quantity dL such as formula 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 heat
The coefficient of expansion, dT are temperature change, K1And K2The respectively described elastic construction 102 and the two-way shape memory alloy spring 103
Rigidity, LMAnd LAThe respectively described two-way shape memory alloy spring 103 is under pure martensitic state and pure austenitic state
Length.
The beneficial effects of the present invention are:
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, structure is simple, is easy to make；And linear compensation is compared, wave length shift is smaller, and Applicable temperature range is wider, makes
The wavelength shift of AWG chip can control in lesser range in -40 DEG C~85 DEG C sections.
[Detailed description of the invention]
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, it can also be obtained according to these attached drawings other
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 embodiment]
In order to make the objectives, technical solutions, and advantages of the present invention 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, term "inner", "outside", " longitudinal direction ", " transverse direction ", "upper", "lower", "top", "bottom" etc. refer to
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 constructed and operated in a specific orientation, 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
Constituting conflict can be combined with each other.Just with reference to drawings and examples, in conjunction with coming, the present invention will be described in detail below.
Embodiment 1:
The embodiment of the 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 into, 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 components, structure is simple, is 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 drive rod, be provided with hole inside 101 body of rod of 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 into 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, and martensitic traoformation starts
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 posture and low temperature martensitic posture 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, LAFor round trip shape note
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 is indicated with formula (1):
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
The length for stating two-way shape memory alloy spring 103 vary with temperature be it is nonlinear, non-linear drive may be implemented.Wherein,
When temperature is lower 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 drive rod changes with temperature, and the drive rod (101) length becomes
Change and is caused by expanding with heat and contract with cold for driving bar material with the variation of the length of the two-way shape memory alloy spring (103)；Wherein, warm
Degree is lower than T1When, the long variable quantity of drive rod (101) bar is dL1, temperature is higher than T1When, the long variation of drive rod (101) bar
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 the 101 length variation with temperature of drive rod such as formula (2):
Wherein, L is the drive rod 101 in room temperature T1Under length, α is the thermal expansion coefficient for driving bar material, and dT is
Temperature change, dL are the 101 length variation with temperature amount of 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 pressure 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
L α dT decisions in formula (2)；When temperature is greater than T1When, spring starts to extend, and spring strain recovery rate η is also gradually increased, and such as schemes
3, then the length variable quantity dL of the drive rod 101 at this time2By L α dT in formula (2) andItem is common certainly
It is fixed, it will also generate bigger driving.Therefore, in low temperature, (temperature is less than T to described device1) when drive volume it is smaller, high temperature (temperature
Degree is greater 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 the AWG chip 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: two-part relative displacement dx needed for compensation AWG is micron order, two-way memory alloy spring
Deflection be η (LA-LM), if the simple deflection η (L with two-way memory alloy springA-LM) compensate, then bullet
The production 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 production 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 scope 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: carrys 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.
Specific 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, an elastic construction 102 is provided on the drive rod 101, the elastic construction 102 may be provided at the drive rod
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 into 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 components, 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 the 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, such as Fig. 5 described in embodiment 1, 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 drive rod
Linear compensation.
A kind of non-linear temperature compensation optical module provided by the invention, using nonlinear temperature described in embodiment 1
Compensation device carries out nonlinear compensation to the variation of wavelength with temperature using two-way shape memory alloy spring, and structure is simple, easily
In production；And compare linear compensation, wave length shift is smaller, and Applicable temperature range is wider, make the wavelength shift of AWG chip-
40 DEG C~85 DEG C sections can control in lesser range.
Such as Fig. 5, the optical module further includes optical path pedestal, and the optical path pedestal is cut to form first area 301 and
Two regions 302, two parts of 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 described drive rod 101
The end a, the end b (such as Fig. 2) it is fixed with the first area 301 and second area 302 respectively.The AWG chip assembly includes 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 coupled on the end face of the input planar waveguide 202, and the output device 205 is coupled in institute
On the end face for stating output planar waveguide 204；Wherein, the AWG chip assembly is 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 end a and the end b of drive rod 101 can drive respectively
The first area 301 and second area 302 are mobile, then relative displacement occurs for the first area 301 and second area 302,
And then relative displacement occurs for the two parts for cutting the AWG open, so that the variation to AWG wavelength with temperature carries out non-linear benefit
It repays.
When temperature is less than T1When, it is zero that spring, which strains recovery rate η, described this duration of two-way shape memory alloy spring 103
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 be made as pressure spring in advance, when temperature be greater than T1When, spring starts to extend, then works as temperature change
When, the length of the drive rod 101 changes dL2For
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 is as shown in fig. 6, all have lesser wavelength shift in -40~85 DEG C of temperature ranges.
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
Non-linear temperature compensation device, such as Fig. 7 described in embodiment 2, 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 drive rod
Linear compensation.
A kind of non-linear temperature compensation optical module provided by the invention, using nonlinear temperature described in embodiment 1
Compensation device carries out nonlinear compensation to the variation of wavelength with temperature using two-way shape memory alloy spring, and structure is simple, easily
In production；And compare linear compensation, wave length shift is smaller, and Applicable temperature range is wider, make the wavelength shift of AWG chip-
40 DEG C~85 DEG C sections can control in lesser range.
Such as Fig. 7, the optical module further includes optical path pedestal, and the optical path pedestal is cut to form first area 301 and
Two regions 302, two parts of 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 is fixed
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 assembly includes 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 coupled in the input
On the end face of planar waveguide 202, the output device 205 is coupled on the end face of the output planar waveguide 204；Wherein, institute
It states AWG chip assembly 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 mobile, and second fixed block 105 and the third fixed block 106 can drive the second area 302 mobile,
Phase occurs for two parts that then first area 301 and second area 302 occur relative displacement, and then cut the AWG open
To displacement, so that the variation to AWG wavelength with temperature carries out nonlinear compensation.
When temperature is less than T1When, it is zero that spring, which strains recovery rate η, described this duration of two-way shape memory alloy spring 103
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 be made as pressure spring in advance, when temperature be greater than T1When, spring starts to extend, then works as temperature change
When, the length of the drive rod 101 changes dL2For
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 is as shown in fig. 6, all have lesser wavelength shift in -40~85 DEG C of temperature ranges.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind 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), it is provided with one or more elastic constructions (102) on the drive rod (101), the two-way shape memory alloy spring
(103) both ends are connect with the drive rod (101), and the two-way shape memory alloy spring (103) and 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 into, 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)1Range be -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 lower 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 temperature 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 wave
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 lower 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
It (1) is overcompensation to the compensation of AWG.
7. non-linear temperature compensation optical module according to claim 5, which is characterized in that it further include optical path pedestal, it is described
Optical 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), planar waveguide (202), Waveguide array (203), output planar waveguide (204) and output device (205) are inputted, 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 output planar waveguide (204).
9. a kind of non-linear temperature compensation method, which is characterized in that mended using any nonlinear temperature 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 relative movement；
Wherein, the long variation of the bar 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 long variation of the bar caused by expanding with heat and contract with cold is directly proportional to temperature, by the round trip shape
The long variation of bar 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 formula of temperature:
Wherein, L is the drive rod (101) in T1Under length, α be drive bar material thermal expansion coefficient, dT be temperature become
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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| CN110058371B (en) * | 2019-04-08 | 2021-05-11 | 武汉光迅科技股份有限公司 | Optical module |
| CN110320595B (en) * | 2019-05-29 | 2021-05-11 | 武汉光迅科技股份有限公司 | Compensation device, array waveguide grating chip and compensation method |
| CN110596846B (en) * | 2019-09-20 | 2022-04-08 | 武汉光迅科技股份有限公司 | Etalon packaging structure and wavelength locking device |
| WO2022024022A1 (en) * | 2020-07-31 | 2022-02-03 | Molex, Llc | New and improved variable dual-directional thermal compensator for arrayed waveguide grating (awg) modules |
| 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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| CN102540350A (en) * | 2012-03-21 | 2012-07-04 | 武汉光迅科技股份有限公司 | Temperature-insensitive arrayed waveguide grating for realizing double linear temperature compensation |
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