EP3891742A1 - Bauelement mit optisch aktiven materialien - Google Patents
Bauelement mit optisch aktiven materialienInfo
- Publication number
- EP3891742A1 EP3891742A1 EP19812664.1A EP19812664A EP3891742A1 EP 3891742 A1 EP3891742 A1 EP 3891742A1 EP 19812664 A EP19812664 A EP 19812664A EP 3891742 A1 EP3891742 A1 EP 3891742A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- optically active
- active material
- component according
- signal
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F3/00—Optical logic elements; Optical bistable devices
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
- G11C13/06—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using magneto-optical elements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
Definitions
- the invention relates to a component with optically active materials and a method for processing and / or storing information in which this component is used.
- Field effect transistors are controlled by a voltage.
- the control or amplification of the current flow between drain and source is done by deliberately enlarging and reducing conductive and non-conductive areas of the semiconductor material.
- the semiconductor material p-doped and n-doped beforehand is either depleted by the applied voltage or the resulting electrical field or enriched with charge carriers.
- phase state amorphous or crystalline
- a chalcogenide-containing material typically Ge-Sb-Te or Ag-In-Sb-Te compounds
- the programming of a cell in the amorphous state (high-resistance) into the crystalline phase (low-resistance) takes place in that an electrical current pulse heats the material above the crystallization temperature by means of Joule heat and thereby allows the material to (partially) crystallize.
- the memory cell is reset or erased by heating the material by means of a second current pulse above the melting temperature, which is higher than the crystallization temperature, and converting it to the amorphous state by rapid cooling.
- a disadvantage of these memory components is that high current densities or amounts of heat are necessary both for the write and for the erase process.
- the component according to the invention which solves the above object, is based on the knowledge that certain materials by external influence, namely by thermal (for example phonons) and / or optical action by photons or by the action of an input power in the form of optical, electrical, evanescent and / or magnetic fields or by mechanical action, in their optical output properties. This property can be used advantageously for processing, storing and reading out information.
- a component which, as a carrier of information, comprises at least one optically active material which has optically detectable properties which can be changed by external influences.
- optically active materials are understood to mean materials which, due to external action in the form of, for example, thermal action or optical action of, for example, phonons and / or photons or by the action of an input power in the form of optical, electrical, evanescent and / or magnetic fields or by mechanical action in their optical (output) properties so that they react with a change in their optically detectable properties, in particular with a change in their transmission property and / or reflection property.
- changes caused by the external action can be accompanied, for example, by a change in the structure, in particular, for example, by a change in the configuration of the molecules and atoms of the optically active material to one another, a change in the composition of the material, the atomic environment and / or a change in the oxidation state of the Material, these changes are preferably reversible, with or without external action.
- the optically active materials can be present as a solid, gas and / or liquid. They can be both organic and / or inorganic.
- Suitable optically active materials are, for example, materials that are photo, electro, magneto and / or piezochrome.
- the following compounds can be mentioned by way of example, but not limited to, as materials which can preferably be changed by optical action, for example by the action of a minimal energy in the form of a single photon:
- Azo compounds stilbines, azastilbines, spiropyrans, spirooxazines, triarylmethanes, polymethines, pyrroles, hydrazines, sydnones, disulfides, nitroso dimers, and quinones.
- Chalcogenide based phase change compounds such as in the GeTe-Sb2Te3 material system, Te-Ge-Sb-S material system, Ag-In-Sb-Te material system and the phase change materials Sb (Bi, Au, As), Ge-Sb-Mn-Sn, Ge (ln, Ag, Sn )[1 ]; Oxides of titanium, tungsten, sulfides of alkaline earth metals, and halides of silver and zinc.
- the optical action in particular by photons, can subsequently also induce a thermal action, for example by converting the photons, in particular, for example, in a signal transmitter, into phonons, in particular heat, and this heat causing the optical properties of the optically active material to change.
- liquid crystals [2] electro-optical crystals such as LiNb03 and LiTaOs
- electro-optical crystals such as LiNb03 and LiTaOs
- Ge-Sb-Mn-Sn Ge (ln, Ag, Sn).
- the following compounds can be mentioned as examples, but not limited to, as materials which can preferably be changed by magnetic or magneto-optical action:
- Colloidally dissolved magnetic nanoparticles such as Fe3C> 4, materials that show the magneto-optical Kerr effect (MOKE), e.g. diluted magnetic semiconductors such as CdMnTe [3].
- MOKE magneto-optical Kerr effect
- Mechanochromic and especially piezochromic materials such as polyvinyl chloride, fluorite.
- the term transmission means the permeability of a material to electromagnetic waves (e.g. light). If an electromagnetic wave that moves, for example, in medium A (e.g. air) hits material B of finite thickness, it is partly reflected at the interfaces and depending on the material properties of the material (in particular, for example, the refractive index) B completely or partially absorbed when crossing. The remaining remainder is transmitted through material B and exits again, for example, on the opposite side of material B (Wikipedia).
- the transmittance T can be a measure of the determination of the transmission.
- the transmittance 7, a material property, is defined as the quotient between the wave intensity / behind and the intensity Io in front of the obstacle
- the transmittance 7 " is therefore a measure of" transmitted "intensity and can assume values between 0 and 1 or 100%.
- the term reflection is understood to mean the retroreflection of light at an interface at which the wave resistance or the refractive index of the propagation medium changes.
- the measurement of transmission and reflection can be recorded separately.
- the detection of the transmission of the solution according to the invention preferably serves the task.
- the reflection can be suppressed, since this can lead to a loss in the efficiency of the component due to the associated loss of intensity.
- a thermal effect for example in the form of laser radiation, can produce an optically readable change in the transmission, in particular, for example, a change in the absorption coefficient and / or the refractive index of the optically active material.
- This change can then be carried out by means of a read operation with optical analysis units e.g. be read as ones and zeros and / or intermediate states that the material can occupy.
- the optically active material as a storage element can, for. B. be in position 1 and 0 and thus contain bits of information. So the optically active material can replace the usual electrically controlled data storage.
- An advantageous geometric and spatial arrangement of one and / or several different layers of the optically active material in the component can, for example, set up to and including 100% transmission.
- an optical impact - e.g. also triggered by a photon source, such as a laser - there are anti-reflection layers suitable for the selected wavelength of the laser, which can be used to suppress reflection.
- the component hereinafter also referred to synonymously as a component, comprises at least one memory area, synonymously also called functional area, containing optically active material, a control arrangement with at least one control signal for changing the optical properties of the optically active material by external action, and means for detection the change in the optical properties of the optically active material, comprising an evaluation input area with at least one evaluation input signal and an evaluation output area with at least one evaluation output signal, the memory area or functional area being arranged between the evaluation input area and the evaluation output area and the control arrangement being adjacent to the memory area or functional area.
- the memory area or Functional areas also serve, for example, to process, store, transmit and / or forward the information.
- the evaluation input area and the evaluation output area can comprise signal transmitters.
- the optically active material of the component can be changed in its optical properties by external action, such as, for example, thermal, optical, electrical, magnetic or mechanical action, at least one means, in particular a control signal of a control arrangement, such that it results in an optically measurable change in the Transmission property comes.
- This change can preferably be measured with the aid of the transmittance which has changed compared to the initial state.
- This optically readable change can, for example, be detected and evaluated with the aid of photodetectors (photodiodes) and, for example, converted into an electrical signal via an interface.
- the change in the transmission property can take place partially or completely. This depends on the set parameters of the control system.
- the change in transmission can be controlled, for example, via the parameters of the control arrangement. In the case of an optical action, this can be controlled, for example, via the wavelength and the irradiated power Pin, the duration of the irradiated power / action, the diameter of the laser beam, the number of control signals and the geometric arrangement of the control signals.
- the changes in the transmission properties caused are preferably reversible, with or without external action.
- this configuration of the component in which the change in the optical properties of the optically active material is irreversible, this configuration of the component can be used, for example, as a non-volatile memory.
- the change in the optical properties of the optically active material by the control arrangement can be triggered by all possible external influences listed, but for each specific component only one type of external influence from the control arrangement on the optically active one Material is selected and exercised.
- the at least one control signal therefore always comprises only one type of external action, which acts on the memory area and for change of the optical properties of the optically active material. This one type of external action can be transmitted to the optically active material of the storage area both from at least one control signal but also from a plurality of control signals.
- the control arrangement with means, in particular at least one control signal, for changing the optical properties of the optically active material can advantageously comprise at least one signal transmitter for transmitting the control signal or signals, which for this purpose has, for example, means for transporting the at least one control signal, these control signals of a respective component each can include a form of external action from the group of, for example, photons, phonons or an input power in the form of optical, evanescent, magnetic or electrical fields or a mechanical action, so that for each component only one of the named forms of external action Action, ie only one type of external action is selected for each component.
- the evaluation input area and the evaluation output area can each have at least one signal transmitter.
- These optical conductors of the control arrangement, the evaluation input area and / or the evaluation output area can comprise, for example, glass fibers, waveguides (on chip).
- the signal of the control arrangement which triggers the transmission change can be applied directly, preferably with the aid of an optical aperture, to the optically active material in the memory area in the event of an optical action. This is preferably done in the near field arrangement.
- direct evaluation of the evaluation input signal or direct evaluation of the evaluation output signal can also take place in the evaluation input area and evaluation output area without a signal transmitter.
- the component In general, it is possible for the component to have a control arrangement, an evaluation input area and / or an evaluation output area even without a signal transmitter.
- the signal transmitters of the control arrangement can trigger the change in the optical properties of the optically active material by forwarding and transmitting the at least one control signal, in the form of, for example, photons, phonons, magnetic and / or electrical fields.
- the signal transmitters of the evaluation input and output area are used, for example, to record and forward the transmission of the storage area with the optically active material to an analysis unit for the transmission, or only to forward it, for example to serve as a control signal or evaluation input signal for a further component.
- the signal at the evaluation output area should also be able to control at least one further component.
- components or an arrangement of several components can thus be connected in parallel and / or in series, for example, to form a circuit, in particular an optical circuit.
- these component arrangements can be one-dimensional, two-dimensional and / or three-dimensional and can then be involved in computing or storage operations.
- arrangements of several components or components, in particular at least two components can be integrated into optical processors, arithmetically logical units, optical switches or optical memories, which can only be operated by photons, for example.
- the components could also be shaped into arrays or switching matrices.
- a component could be part of an arrangement and / or part of a computing unit and / or part of processors.
- the evaluation input area, the evaluation output area and the control arrangement can also change their function on the optically active material within the component.
- the component can also be used in different directions, for example.
- Signal transmitters of the control arrangement, as well as of the evaluation input area or evaluation output area, in the form of optical conductors, can irradiate with an angle of incidence, or angle of radiation in the case of the evaluation output area, between> 90 ° to 180 ° onto the surface of the optically active material in the memory area or from the Step out the surface of the optically active material in the case of the evaluation output area.
- an angle of incidence or beam angle of 90 ° within the scope of the invention, the perpendicular to the surface of optically active material incoming or outgoing signal can be understood.
- Signal transmitters with an angle of incidence or angle of radiation> 90 ° therefore meet, based on the 90 ° defined perpendicular to the surface -
- Beam angle / beam angle axis obliquely on the surface of the optically active material or emerge obliquely from the surface. Due to the set angle, e.g. the degree of reflection but also the penetration depth in the material and thus the degree of transmission can be controlled.
- optical fibers in the form of glass fibers have a high transmission at wavelengths of e.g. 1550 nm, 1300 nm and 850 nm.
- this material should advantageously have a high transmission (in one of the states that it can assume) at these wavelengths in order to obtain the highest possible transmission signal. The higher the transmission signal, the more clearly and precisely it is possible to detect a change in the transmission signal.
- the component according to the invention can advantageously comprise at least two different optically active materials in the storage area. It is also possible that the storage area also includes four or more different materials. Different optically active materials absorb different wavelengths and these wavelengths then cause different changes in the material properties. This leads to different and or discrete degrees of transmission. You will also transmit different wavelengths of the evaluation input signal differently.
- PCM Phase change materials
- the different optically active materials can, for example, advantageously be arranged in a layer structure of stacked layers arranged one above the other or next to one another. These are preferably not physically separate from one another. As a result, a large number of different optical materials with differently changeable specific optical properties can be arranged in a component, with which a large amount of information (bits) can then also be processed and / or stored.
- the layer thickness of the optically active material must be set so that the respective transmission can still be measured optically and a change in the transmission due to the action of the means of the control arrangement also remains optically evaluable.
- the transmission is also dependent on material properties of the optically active material, such as absorption coefficients of the material and on geometric parameters such as the thickness of the material.
- Layer structure in the memory area can be arranged perpendicular to the beam direction of the control signal and / or parallel to the beam direction of the control signal. With this advantageous arrangement, further signal control of the component can be achieved. Depending on whether the shifts switch earlier or later, it is determined which region and up to which shift is switched. As a result of this advantageous arrangement of the different materials, the component can fulfill its versatile functionality and its logical function.
- Reflective means can be arranged behind the storage area with the optically active material, which lies opposite the beam direction of the optical conductor of the control arrangement. Reflective materials can also be arranged where the evaluation input area, the evaluation output area and the control arrangement do not touch the optically active material.
- the reflecting means can be, for example, a metallic mirror, a mirror made of dielectric multi-layers, or an optically active material that has metallic properties. By means of these reflecting means, the signal of the control arrangement to the memory area can suffer fewer losses.
- the evaluation Anti-reflection means can also be arranged in the input area and the control arrangement touch the memory area. They can be used for more efficient signal coupling into the optically active material.
- the anti-reflective agents can be, for example, oxides and nitrides of silicon.
- the control arrangement and / or the evaluation input area can also have at least two signal transmitters in an advantageous embodiment of the component. It is also possible that 4 to as much as technically possible signal transmitters are used. As a result, a signal can be sent from the control arrangement to the memory area at individual points in the memory area, and a stepwise or serial signal irradiation can be carried out on the memory area. The number of signal transmitters depends on the desired function / functionality of the component and the feasibility.
- the evaluation input area can include signal transmitters for forwarding an optical output signal, which can be, for example, glass fiber cables, waveguides, photon emitters, laser emitters.
- signal transmitters can also be dispensed with.
- the evaluation output area can include signal transmitters for detecting the optical output signal.
- Photodetectors, photodiodes, polarimeters, transmission meters or spectrometers, for example, can be used as the analysis unit in the evaluation output area for detecting the changed optical properties.
- the measured optical signals can then be converted into an electrical signal, for example via an opto-electrical interface.
- Other components or components with optically active materials can also record and modulate the signal.
- a signal transmitter can also be dispensed with here.
- Figure 1 embodiment of the device according to the invention
- Figure 2a embodiment of the device according to the invention, with a
- Phase change material as an optically active agent in state "1"
- Figure 2b embodiment of the device according to the invention, with a
- Phase change material as an optically active agent in state "2"
- Figure 2c embodiment of the device according to the invention, with a
- Phase change material as an optically active agent in state "3"
- FIG. 3 Embodiment of the component according to the invention controlled and evaluated by the optical action of photons of the same wavelength
- FIG. 4 Embodiment of the component according to the invention controlled and evaluated by optical action of photons of different wavelengths
- Figure 5a embodiment of the device according to the invention with a
- Figure 5b embodiment of the device according to the invention with a
- Figure 6 embodiment of the component according to the invention with a means which reflects the control signal
- Figure 7a embodiment of the device according to the invention with two
- Control signals and two signal transmitters of the control arrangement and an optically active material
- Figure 7b embodiment of the device according to the invention with two
- Figure 8a embodiment of the device according to the invention with two
- Figure 8b embodiment of the device according to the invention with two
- Figure 8c embodiment of the device according to the invention with two
- Figure 8d embodiment of the device according to the invention with two
- Figure 8e embodiment of the device according to the invention with two
- Layer arrangement or layer structure made of optically active material 1 to 8e show exemplary embodiments of the component according to the invention in a sectional drawing.
- the component according to the invention comprises a control arrangement 1 with at least one control signal 1 a for changing the optical properties of the optically active material 4 a and preferably at least one, but not necessarily, signal transmitter 1 b, one to the control arrangement 1, hereinafter also referred to synonymously as control unit 1, adjacent evaluation input area 2 with at least one evaluation input signal 2a and preferably, but not necessarily, at least one signal transmitter 2b, and an evaluation output area 3 comprising an evaluation output signal 3a and preferably, but not necessarily, a signal transmitter 3b, wherein between the evaluation input area 2 and the evaluation output area 3 and adjacent to the control unit 1 with which the control signal 1 a, the storage area 4 with the optically active material 4 a is arranged.
- an evaluation input signal 2a in the form of a light signal (laser beam, laser pulse, a light-emitting diode, a photon source and also a single photon) is first, but not necessarily, in the evaluation input area 2 by a Signal transmitter 2b, placed on the optically active material 4a in the memory area 4 and in the evaluation output area 3, the evaluation output signal 3a is preferably, but not necessarily, detected via a signal transmitter 3b and sent to an analysis unit, such as, for. B. a spectrometer, a photodiode or a photodetector or forwarded to a further photonic unit and determines the optical output property.
- an analysis unit such as, for. B. a spectrometer, a photodiode or a photodetector or forwarded to a further photonic unit and determines the optical output property.
- These process steps can preferably be used to determine the transmittance of the component in the initial state. This transmittance can then be converted into an electrical signal via an interface, for example.
- a control signal 1a in the form of one of the external influences described above by way of example, preferably, but not necessarily, being given via a signal transmitter 1b to the memory area 4 with the optically active material 4a, thereby changing the changes in the optical properties already described in more detail above of the optically active material 4a.
- an evaluation input signal 2a is again passed through the evaluation input area 2, preferably, but not necessarily, to the optically active material in the memory area 4 by means of a signal transmitter 2b, and in the evaluation output area 3 the evaluation output signal 3a is preferably, but not necessarily, via one Signal transmitter 3b detected and sent to an analysis unit, such as. B. photodetectors (photodiodes), a polarimeter, transmission meter, or spectrometer.
- the transmittance of the component which has changed in comparison to the basic signal in the form of the optical output property, is then determined here. This transmittance can then, for example, be converted back into an electrical signal via an interface.
- the optically active material 4a in the memory area 4 can thus be in states 0 (basic signal) and 1 (optically changed basic signal), for example, and thus contain bits of the information.
- the information content is contained in the present exemplary embodiment in the form of photons.
- FIG. 2a shows an exemplary embodiment of the component according to the invention in a sectional drawing, in which the optically active material 4a in the memory area 4 consists of phase change material (PCM).
- PCM phase change material
- the PCM is, for example, in state “1” (PCM “1”).
- the signal associated with state “1”, in the form of the measured basic signal in the form of the (output) transmittance, is first determined, as previously described for FIG. 1.
- FIG. 2b shows an exemplary embodiment of the component according to the invention with a phase change material (PCM) as optically active material 4a in the memory area 4, the PCM from FIG. 2a now being in state “2” (PCM “2”).
- PCM phase change material
- an optical control signal 1 a in the form of radiation of a specific infrared wavelength, preferably, but not necessarily, was passed via the signal transmitter 1 b into the memory area 4, which leads to a change in the optical property of the PCM Materials is coming.
- the optical control signal 1a does not lead to a complete change of the amorphous state of the PCM material into the crystalline state or vice versa, but only to a partial change of the state of the PCM material.
- the signal that can be assigned to the PCM material in state “2” can be determined as described previously for FIG. 2a.
- FIG. 2c shows an exemplary embodiment of the component according to the invention with a phase change material (PCM) as optically active material 4a in the memory area 4, the PCM from FIG. 2a now being in state “3” (PCM “3”) .
- PCM phase change material
- an optical control signal 1 a in the form of irradiation of a specific infrared wavelength, was passed into the memory area 4, preferably, but not necessarily, again via the signal transmitter 1 b of the control unit 1, causing a further partial change in the optical property of the PCM material is coming.
- the signal that can be assigned to the PCM material in state “3” can be determined, as already described for FIG. 2a.
- the control of the change in the optically active material 4a can be achieved here, for example, by a different power input of the wavelength, a different pulse duration or a different penetration depth.
- phase change material as optically active material 4a is in the initial state, not fixed to a specific phase of this material, but can be chosen as desired.
- phase change materials can be used in which the control signal 1 a causes an amorphization of the crystalline state by means of a short pulse with high energy or a long pulse with low energy causes the material to crystallize.
- a phase change material is used which behaves in exactly the opposite way.
- FIG. 3 shows an exemplary embodiment of the component according to the invention, in which the optically active material 4a in the memory area 4 is changed by the optical action of photons of a wavelength l1, triggered by the control signal 1a of the control unit 1, and the evaluation of the signal with the same wavelength l1 is evaluated .
- FIG. 4 shows an exemplary embodiment of the component according to the invention, in which the optically active material in the memory area 4 is changed by external optical action of the control signal 1 a in the form of photons of a wavelength l2 and the evaluation of the signal is evaluated with a different wavelength l1.
- the control signal 1 a in the form of photons of a wavelength l2
- the evaluation of the signal is evaluated with a different wavelength l1.
- several different wavelengths l2 can also be used, and the signals can then also be evaluated with several different wavelengths l1.
- FIG. 5a shows an exemplary embodiment of the component according to the invention, in which the memory area 4 comprises a multiplicity 1 to n different optically active materials OAM-1 to OAM-n, which are arranged in layers arranged one above the other to form a layer structure 6, the individual layers in each case perpendicular are aligned with the beam direction of the control signal 1 a of the control arrangement 1.
- FIG. 5b shows an exemplary embodiment of the component according to the invention, in which the memory area 4 comprises a multiplicity 1 to n different optically active materials OAM-1 to OAM-n, which are arranged in layers arranged next to one another in a layer structure 6, the individual layers in each case parallel are aligned with the beam direction of the control signal 1 a of the control arrangement 1.
- FIG. 6 shows an exemplary embodiment of the component according to the invention, in which a layer 5 is arranged behind the storage area 4 with the optically active material 4a, which the control signal 1 a, which is from the control unit 1, preferably, but not necessarily, with the aid of the signal transmitter 1 b through the optically active material 4a of the memory area 4 and exits from it, is reflected by the layer 5 and can cause signal amplification.
- This layer 5 can store the control signal 1 a in the memory range 4 reflect back with the optically active material 4a external action, in the form of, for example, photons, phonons or other previously mentioned external actions, so that the control signal 1a preferably without losses to change the optical properties, for example to change the phase, in the optically active material 4a leads.
- Metals such as Ag, Au, Al, Cu or even mirrors made of dielectric multi-layers (e.g.
- Bragg_Spiegel are used, which are suitable for the signal wavelength.
- the reflecting surface can, for example, be placed wherever no signal transmitters touch the optically active material 4a.
- FIG. 7a shows an embodiment of the component according to the invention with two control signals 1a and two signal transmitters 1b, which can cause a gradual or discrete change in the optical properties of the optically active material 4a in the memory area 4.
- phase change materials can be mentioned which can assume intermediate states between the crystalline and amorphous states.
- the memory area 4 can comprise, for example, two different, optically active materials, OAM-1 and OAM-2.
- these are two different PCMs, PCM1 and PCM2. These can react differently to the control signals 1 a emitted by the control unit 1, so that different, independent switching of the individual materials is possible.
- This configuration enables, for example, a logical combination of information to be stored and connected.
- FIG. 8a shows an exemplary embodiment of the component according to the invention, in which the evaluation signal unit 2 comprises two evaluation input signals 2a with two signal transmitters 2b, so that the memory area 4 can be supplied with two different evaluation input signals 2a, so that the signal in the memory area 4 can be evaluated with different signals.
- This configuration enables, for example, a logical combination of information to be stored and connected.
- 8b shows, in comparison to FIG. 8a, in addition to the two evaluation input signals 2a with two signal transmitters 2b, two control signals 1a with corresponding signal transmitters 1b, so that the optically active material 4a can be evaluated not only with two different evaluation input signals 2a, but also with two different control signals 1a can be changed.
- This configuration enables, for example, a logical combination of information to be stored and connected
- FIG. 8c shows a further possible embodiment of the component or component according to the invention, in which, compared to the embodiment shown in FIG. 8b, the optically active material 4a in the memory area 4 is also composed of two different optically active materials, OAM-1 and OAM-2 . These two different materials are in a layer arrangement or
- Layer structure 6 arranged, wherein the two respective layers are aligned perpendicular to the beam direction of the control signals 1 a of the control unit 1.
- FIG. 8d shows an embodiment of the component or component according to the invention which is essentially similar to that of FIG. 8c, in which case, in contrast to the embodiment according to FIG. 8c, the two respective layers of the different optically active materials 4a made of the two different optically active materials, OAM-1 and OAM-2 in the memory area 4 are aligned parallel to the beam direction of the control signals 1 a of the control unit 1.
- FIG. 8e shows a further variant of the component or component according to the invention compared to the embodiments according to FIGS. 8c and 8d, in which, in contrast to the configurations in FIGS. 8c and 8d, the memory area 4 different optical materials 4a, OAM-1, OAM-2, OAM -3 and OAM-4. These are arranged in a layer arrangement or layer structure 6 such that two different materials, OAM-1 and OAM-3 as well as OAM-2 and OAM-4, arranged one above the other, are aligned perpendicular to the beam direction of the control signals 1 a of the control unit 1.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Semiconductor Memories (AREA)
Abstract
Description
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018009447.3A DE102018009447A1 (de) | 2018-12-04 | 2018-12-04 | Bauelement mit optisch aktiven Materialien |
| PCT/DE2019/000292 WO2020114532A1 (de) | 2018-12-04 | 2019-11-06 | Bauelement mit optisch aktiven materialien |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3891742A1 true EP3891742A1 (de) | 2021-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19812664.1A Pending EP3891742A1 (de) | 2018-12-04 | 2019-11-06 | Bauelement mit optisch aktiven materialien |
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| IT202100020864A1 (it) | 2021-08-03 | 2023-02-03 | Taplast Srl | Pompa monopolimerica, azionata a cupola |
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| US3912391A (en) * | 1963-12-23 | 1975-10-14 | Ibm | Optical information storage and retrieval system with optical storage medium |
| US3518634A (en) * | 1967-06-16 | 1970-06-30 | Bell Telephone Labor Inc | Optical memory with photoactive memory element |
| JPS60185229A (ja) * | 1984-03-02 | 1985-09-20 | Mitsubishi Electric Corp | 情報の記録・再生・消去方法 |
| US6483735B1 (en) | 1989-04-25 | 2002-11-19 | The Regents Of The University Of California | Two-photon, three-or four-dimensional, color radiation memory |
| US5051950A (en) * | 1989-07-31 | 1991-09-24 | Radiant Technologies | Read/write optical memory |
| JP3198113B2 (ja) * | 1996-06-12 | 2001-08-13 | オプティコム エイエスエイ | 光論理素子および光論理機構 |
| NO962475L (no) * | 1996-06-12 | 1997-12-15 | Opticom As | Optisk logisk element og optisk logisk innretning |
| GB2335780A (en) * | 1998-03-23 | 1999-09-29 | Hyrcynian Holdings Limited | Optical data storage |
| DE102004041893B4 (de) | 2004-08-30 | 2006-11-23 | Infineon Technologies Ag | Verfahren zur Herstellung von Speicherbauelementen (PCRAM) mit Speicherzellen auf der Basis einer in ihrem Phasenzustand änderbaren Schicht |
| US20070195611A1 (en) * | 2006-02-23 | 2007-08-23 | Ralf Symanczyk | Programmable structure, a memory, a display and a method for reading data from a memory cell |
| US7626842B2 (en) * | 2006-11-16 | 2009-12-01 | Freescale Semiconductor, Inc. | Photon-based memory device and method thereof |
| TWI432866B (zh) * | 2011-01-10 | 2014-04-01 | Univ Nat Cheng Kung | 電致變色裝置和儲存裝置及其製造方法 |
| DE102012016178B3 (de) * | 2012-08-16 | 2013-08-29 | Forschungszentrum Jülich GmbH | Verfahren zur optischen Übertragung einer Struktur in ein Aufnahmemedium |
| US20180059440A1 (en) * | 2016-08-29 | 2018-03-01 | The Trustees Of Columbia University In The City Of New York | Systems and methods for active photonic devices using correlated perovskites |
| WO2018167785A1 (en) * | 2017-03-13 | 2018-09-20 | Frumkin Ted Greg Lee | Loop memory cell |
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| DE102018009447A1 (de) | 2020-06-04 |
| US20210383866A1 (en) | 2021-12-09 |
| KR20210095127A (ko) | 2021-07-30 |
| KR102704598B1 (ko) | 2024-09-10 |
| US11521681B2 (en) | 2022-12-06 |
| WO2020114532A1 (de) | 2020-06-11 |
| JP7461349B2 (ja) | 2024-04-03 |
| JP2022510777A (ja) | 2022-01-28 |
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