WO2023174752A1 - Optoelektronisches modul und verfahren zum betrieb eines optoelektronischen moduls - Google Patents
Optoelektronisches modul und verfahren zum betrieb eines optoelektronischen moduls Download PDFInfo
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- WO2023174752A1 WO2023174752A1 PCT/EP2023/055711 EP2023055711W WO2023174752A1 WO 2023174752 A1 WO2023174752 A1 WO 2023174752A1 EP 2023055711 W EP2023055711 W EP 2023055711W WO 2023174752 A1 WO2023174752 A1 WO 2023174752A1
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- optoelectronic module
- distribution
- semiconductor component
- electromagnetic radiation
- elements
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Classifications
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- 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
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/21—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference
- G02F1/212—Mach-Zehnder type
-
- 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
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4215—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers
-
- 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
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/421—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical component consisting of a short length of fibre, e.g. fibre stub
-
- 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
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/21—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference
- G02F1/225—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29331—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by evanescent wave coupling
- G02B6/29335—Evanescent coupling to a resonator cavity, i.e. between a waveguide mode and a resonant mode of the cavity
- G02B6/29338—Loop resonators
- G02B6/29343—Cascade of loop resonators
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
- G02B6/2935—Mach-Zehnder configuration, i.e. comprising separate splitting and combining means
- G02B6/29352—Mach-Zehnder configuration, i.e. comprising separate splitting and combining means in a light guide
- G02B6/29355—Cascade arrangement of interferometers
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
- G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
- G02B6/29362—Serial cascade of filters or filtering operations, e.g. for a large number of channels
- G02B6/29365—Serial cascade of filters or filtering operations, e.g. for a large number of channels in a multireflection configuration, i.e. beam following a zigzag path between filters or filtering operations
- G02B6/29367—Zigzag path within a transparent optical block, e.g. filter deposited on an etalon, glass plate, wedge acting as a stable spacer
Definitions
- the optoelectronic module is set up in particular to generate electromagnetic radiation, for example light that can be perceived by the human eye.
- One problem to be solved is to provide an optoelectronic module that has a plurality of output waveguides with a particularly high luminance.
- Another task to be solved is to specify a method for operating an optoelectronic module that enables simplified control of a plurality of output waveguides.
- the optoelectronic module comprises a semiconductor component designed to emit electromagnetic radiation.
- the electromagnetic radiation preferably comprises a spectral distribution with a main wavelength in the visible spectral range.
- a main wavelength is a wavelength an electromagnetic radiation in which a spectrum of radiation has a global maximum.
- the semiconductor component includes, for example, at least one semiconductor emitter.
- the semiconductor emitter comprises a first region of a first conductivity, a second region of a second conductivity and an active region which is set up to emit electromagnetic radiation.
- the first conductivity advantageously differs from the second conductivity.
- the first region and the second region are each formed with a doped semiconductor material.
- the active region has in particular a pn junction, a double heterostructure, a single quantum well structure (SQW, single quantum well) or a multiple quantum well structure (MQW, multi quantum well) for generating radiation.
- the semiconductor emitter is, for example, a luminescent diode, in particular a light-emitting or laser diode.
- the optoelectronic module comprises a distribution structure with a plurality of distribution elements, at least one input waveguide and a plurality of output waveguides.
- the distribution structure includes, for example, a planar waveguide structure.
- the distribution elements, the at least one input waveguide and the output waveguides are monolithically integrated on a substrate. This enables a particularly compact design with advantageously low optical coupling losses.
- the distribution structure is in particular designed to distribute electromagnetic radiation from the at least one input waveguide to the output waveguides in a predetermined intensity ratio. The electromagnetic radiation coupled into the distribution structure can thus emerge from the output waveguides in a desired ratio.
- the distribution elements are provided, for example, in the form of optical switches.
- Each distribution element preferably comprises an input and at least two outputs. In particular, each distribution element influences a distribution of the radiation intensity of electromagnetic radiation entering through the input to the outputs.
- the optoelectronic module comprises a plurality of conversion structures.
- a conversion structure is set up in particular for converting electromagnetic radiation of a first wavelength to electromagnetic radiation with a second wavelength that is different from the first wavelength.
- the conversion structure effects, for example, a partial or complete conversion of the incoming electromagnetic radiation.
- the conversion structure converts part of the electromagnetic radiation entering it and consequently emits mixed radiation.
- the mixed radiation advantageously creates a white color impression for an observer.
- the electromagnetic radiation emitted by the semiconductor component enters the distribution structure through the input waveguide.
- the input waveguide points advantageously a core area and a jacket area.
- the jacket area at least partially surrounds the core area.
- the core region advantageously has a higher refractive index than the cladding region.
- the electromagnetic radiation emerges from the distribution structure through the output waveguides.
- a desired distribution of the electromagnetic radiation can be set on the output waveguides.
- the electromagnetic radiation emerges from each output waveguide in one exit direction.
- the exit directions of all output waveguides are preferably aligned parallel to one another.
- a conversion structure is arranged downstream of each output waveguide.
- An arrangement of one conversion structure on each output waveguide enables a particularly high contrast ratio between adjacent conversion structures.
- the optoelectronic module comprises:
- the electromagnetic radiation emitted by the semiconductor component enters the distribution structure through the input waveguide, - the electromagnetic radiation through the
- Each output waveguide is followed by a conversion structure.
- An optoelectronic module described here is based, among other things, on the following considerations:
- To produce pixelated light sources with high luminance several individual semiconductor components can be arranged next to one another in an array.
- a converter element can be arranged downstream of each semiconductor component.
- Such an arrangement makes effective heat dissipation of the semiconductor components and the converter elements more difficult, since waste heat is generated both in the semiconductor components and in the converter elements during operation.
- a maximum achievable luminance of the individual semiconductor components can thus be limited.
- a precise arrangement of a plurality of semiconductor components in an array can be associated with increased manufacturing effort.
- the optoelectronic module described here makes use, among other things, of the idea of making a spatial separation between the generation of electromagnetic radiation and the conversion of the electromagnetic radiation. Furthermore, by using a distribution structure, only one semiconductor component is required to control a plurality of emission areas. Electromagnetic radiation generated in the semiconductor component is coupled into the distribution structure and distributed there to a plurality of output waveguides. Each output waveguide is followed by a conversion structure, which represents at least part of the converted to electromagnetic radiation. Due to the spatial separation between the semiconductor component and the conversion structures, the two structures can be cooled separately. The semiconductor component and the conversion structures can thus advantageously work at different operating temperatures. Furthermore, a plurality of conversion structures can be controlled with just one semiconductor component. A complex adjustment of a plurality of semiconductor components in an array can advantageously be avoided.
- the distribution elements are passive and wavelength-selective filter elements.
- the distribution elements are designed as Mach-Zehnder interferometers, as dielectric interference thin-film filters, as waveguide grating routers or as micro-ring resonators.
- passive distribution elements do not require any additional control.
- the distribution elements are designed to select electromagnetic radiation according to its main wavelength.
- a distribution of the output characteristic of a distribution element can be set, for example, by an electrical field that is constantly applied during operation on a beam splitter or a constantly set phase shift on a Mach-Zehnder interferometer. For example, manufacturing-related deviations in the distribution elements can be compensated for.
- the distribution elements have a pass band with a bandwidth of at most 2 nm, preferably at most 1 nm.
- the distribution elements in the passage areas have a high radiation permeability. For example, electromagnetic radiation outside the pass band is reflected or absorbed by the distribution element.
- a small bandwidth enables an advantageously high number of distribution elements to be controlled with a semiconductor component that emits electromagnetic radiation with a limited bandwidth.
- the semiconductor component is set up to emit coherent radiation with a modulatable main wavelength.
- a distribution of the electromagnetic radiation can be influenced by the wavelength-selective distribution structure.
- the semiconductor component includes a laser component with a sampled grating and a distributed Bragg reflector (English: Sample Grating Distributed Bragg Reflector Laser, short: SG-DBR).
- the semiconductor component is formed with a laser component with an external resonator.
- the main wavelength of the electromagnetic radiation emitted by the semiconductor component can be modulated in a spectral range over a bandwidth of at least 25 nm, preferably at least 50 nm and particularly preferably at least 100 nm, the spectral range having a wavelength of 447 nm includes.
- the semiconductor component preferably emits coherent electromagnetic radiation.
- the semiconductor component emits electromagnetic radiation with a main wavelength between 390 nm and 480 nm.
- the main wavelength can be modulated with a frequency of at least 500 Hz, preferably at least 1 kHz and particularly preferably at least 2 kHz.
- a high modulation frequency enables an advantageously short period of time in which a specific main wavelength can be emitted.
- a high modulation frequency also increases the number of different main wavelengths that can be provided in a given display period. Consequently, the number of controllable distribution elements and output waveguides can be increased.
- a representation period describes here and below a period in which a desired intensity distribution of the electromagnetic radiation is provided on the output waveguides.
- the display period is so short that a human observer does not get the impression of flickering.
- the display period is at most 1/30 s, preferably at most 1/60 s and particularly preferably at most 1/100 s long.
- the semiconductor component comprises at least two semiconductor emitters, the first semiconductor emitter being used to emit electromagnetic radiation with a variable main wavelength in a first spectral range is set up and a second semiconductor emitter is set up to emit electromagnetic radiation with a variable main wavelength in a second spectral range.
- the first main wavelength is in particular different from the second main wavelength.
- the spectral ranges of the first electromagnetic radiation and the second electromagnetic radiation do not overlap.
- each semiconductor emitter is assigned an input waveguide.
- the required number of distribution elements can be reduced.
- a first semiconductor emitter is assigned a first number of output waveguides and a second semiconductor emitter is assigned a second number of output waveguides.
- the first main wavelength of the first semiconductor emitter is advantageously identical to the second main wavelength of the second semiconductor emitter.
- each output waveguide is assigned exactly one distribution element.
- each distribution element is designed in particular to control exactly one output waveguide.
- the distribution elements are active and controllable coupling elements. Active distribution elements are advantageous particularly precisely controllable.
- the distribution elements are designed as controllable directional couplers or as controllable directional couplers with phase reversal.
- each distribution element includes a Mach-Zehnder interferometer.
- the distribution elements are advantageously designed as electro-optically controllable components. In other words, an intensity distribution at the outputs of a distribution element can be adjusted using an electrical control signal.
- each distribution element is assigned a control line.
- the distribution elements can be modulated with a frequency of at least 0.5 GHz, preferably 1 GHz, particularly preferably 10 GHz.
- a complete switching process is considered to be a modulation of a distribution element.
- a particularly high modulation frequency enables an advantageously increased number of output waveguides that can be controlled within a predetermined display period.
- the semiconductor component is set up to emit coherent radiation with a main wavelength in the blue spectral range.
- the main wavelength is greater than or equal to 450 nm and less than or equal to 475 nm.
- a main wavelength in the blue spectral range is particularly suitable for generating white mixed light.
- Each conversion structure includes a decoupling element.
- the decoupling element is, for example, an optical one Grating coupler (English: grating coupler).
- Grating couplers enable an advantageously high efficiency with which electromagnetic radiation is coupled out of a waveguide into an area.
- each conversion structure comprises a diffuser element.
- the diffuser element is preferably arranged downstream of the decoupling element.
- the diffuser element homogenizes electromagnetic radiation emerging from the coupling element.
- the diffuser element for example, has a large number of small scattering centers. If parallel light rays hit different points on the diffuser element, they are distributed in different directions and thus produce diffuse light.
- each input waveguide is assigned a coupling element.
- the coupling element is, for example, a grid coupler.
- the coupling element enables, in particular, improved coupling efficiency between the semiconductor component and an input waveguide.
- the semiconductor component is formed with a III/V compound semiconductor material.
- a III/V compound semiconductor material has at least one element from the third main group, such as B, Al, Ga, In, and one element from the fifth main group, such as N, P, As.
- the term “III/V compound semiconductor material” includes the group of binary, ternary or quaternary compounds that contain at least one element from the third main group and contain at least one element from the fifth main group, for example nitride and phosphide compound semiconductors.
- Such a binary, ternary or quaternary compound can also have, for example, one or more dopants and additional components.
- at least the active areas of the semiconductor component are formed with a III/V compound semiconductor material.
- the semiconductor component in particular also includes other materials, for example in the form of metallizations and/or carrier materials.
- the semiconductor component is preferably based on a phosphide compound semiconductor material.
- “Based on phosphide compound semiconductor material” in this context means that the semiconductor component or at least a part thereof, particularly preferably at least the active region and/or a growth substrate wafer, preferably Al n Ga m Inin -nm P or As n Ga m Ini - nm P includes, where 0 ⁇ n ⁇ 1, 0 ⁇ m ⁇ 1 and n+m ⁇ 1.
- This material does not necessarily have to have a mathematically exact composition according to the above formula. Rather, it can have one or more dopants as well as additional components.
- the above formula only includes the essential components of the crystal lattice (Al or As, Ga, In, P), even if these can be partially replaced by small amounts of other substances.
- the semiconductor component is formed with InGaAsP.
- the distribution structure is formed with one of the following materials: III/V compound semiconductor material, silicon on an insulator (English: silicon-on-insulator, SOI for short), silicon dioxide, silicon nitride, indium phosphide, gallium arsenide, diamond, diamond on an insulator (English: Diamond-on-Insulator, DOI for short), lithium niobate, aluminum oxide, aluminum nitride, gallium nitride.
- the distribution structure is preferably formed with the same material as the semiconductor component.
- no jump in refractive index occurs between the semiconductor component and the distribution structure.
- the optoelectronic module comprises at least 10, preferably at least 30, particularly preferably at least 100 output waveguides.
- An increased number of output waveguides increases the achievable resolution of the optoelectronic module.
- the optoelectronic module includes a maximum of 200 output waveguides.
- a method for operating an optoelectronic module is also specified.
- the optoelectronic module can be operated in particular using the method described here. This means that all features disclosed in connection with the optoelectronic module are also disclosed for the method for operating an optoelectronic module and vice versa.
- the distribution elements are provided as passive and wavelength-selective filter elements.
- the distribution elements are designed as Mach-Zehnder interferometers, as dielectric interference thin-film filters, as waveguide grating routers or as micro-ring resonators.
- passive distribution elements are required no additional control.
- the distribution elements select electromagnetic radiation according to its main wavelength.
- the distribution elements allow electromagnetic radiation with a main wavelength to be transmitted in a pass band and absorb or reflect electromagnetic radiation in the spectral range outside the pass band.
- the semiconductor component emits electromagnetic radiation with different discrete main wavelengths.
- the discrete main wavelengths each correspond to a pass band of a distribution element.
- the main wavelength of the electromagnetic radiation determines through which distribution element the electromagnetic radiation can be transmitted.
- each main wavelength is assigned a distribution element.
- different main wavelengths are emitted in a representation period for a period of time dependent on the main wavelength.
- the emission of electromagnetic radiation of a specific main wavelength for a period of time dependent on the main wavelength enables a desired intensity distribution of the electromagnetic radiation on the output waveguides.
- an optical output power of the semiconductor component is in the Representation period constant. This enables particularly simple control of the semiconductor component.
- different main wavelengths are emitted for an identical period of time in a representation period.
- a change in the main wavelength can advantageously take place at a constant speed.
- an optical output power of the semiconductor component is modulated in the representation period synchronously with the modulation of the main wavelengths.
- a desired intensity distribution on the output waveguides can thus be achieved by modulating the output power of the semiconductor component.
- the distribution elements (210) are provided as active and controllable coupling elements. Active distribution elements can advantageously be controlled particularly precisely.
- the distribution elements are designed as controllable directional couplers or as controllable directional couplers with phase reversal.
- each distribution element includes a Mach-Zehnder interferometer.
- the distribution elements are advantageously designed as electro-optically controllable components. In other words, an intensity distribution on the outputs of a distribution element is set using an electrical control signal.
- each distribution element is assigned a control line.
- the semiconductor component emits electromagnetic radiation with a constant main wavelength. This enables a particularly simple design of the semiconductor component.
- an optical output power of the semiconductor component is constant in a representation period.
- the control of the semiconductor component is therefore simplified.
- the distribution elements act as variably modulated beam splitters, the distribution of which is constant over the period shown.
- the distribution elements can cause any distribution of the optical power entering them between the outputs.
- a distribution that is constant over the representation period enables an advantageously low requirement for a minimum switching time of the distribution elements and simplifies their control.
- the distribution elements act as optical switches and are switched several times in a period shown.
- a switch is understood to be a component with ideally only two switching states.
- a distribution element can thus distribute all of the incoming electromagnetic radiation either to a first output or to a second output. This enables simplified control of the distribution elements.
- Operation of an optoelectronic module is optical
- Output power of the semiconductor component is modulated synchronously with the distribution elements in the display period. Modulation of the optical output power of the semiconductor component makes it possible to display a desired intensity distribution on the output waveguides when using optical switches as distribution elements.
- An optoelectronic module described here is particularly suitable for use as pixelated light sources with a high luminance. Especially as headlights for motor vehicles.
- FIG. 1 shows a schematic sectional view of an optoelectronic module described here according to a first exemplary embodiment
- FIG. 2 shows a schematic sectional view of an optoelectronic module described here according to a second exemplary embodiment
- FIG. 3 shows a schematic top view of an optoelectronic module described here according to a third exemplary embodiment
- 4 shows a schematic top view of an optoelectronic module described here according to a fourth exemplary embodiment
- FIG. 5 shows a perspective schematic sectional view of an optoelectronic module described here according to a fifth exemplary embodiment
- FIG. 6 shows a control concept of an optoelectronic module described here according to a first exemplary embodiment
- FIG. 8 shows a schematic sectional view of a conversion structure described here according to a first exemplary embodiment
- FIG. 9 shows a schematic sectional view of a conversion structure described here according to a second exemplary embodiment
- FIG. 10 shows a schematic sectional view of a conversion structure described here according to a third exemplary embodiment
- 11 shows a schematic sectional view of a conversion structure described here according to a fourth exemplary embodiment
- 12 shows a schematic sectional view of an optoelectronic module described here according to a sixth exemplary embodiment
- FIG. 13A shows a schematic top view of an optoelectronic module described here according to a seventh exemplary embodiment
- FIG. 13B shows a schematic sectional view of an optoelectronic module described here according to the seventh exemplary embodiment
- FIG. 14 shows a schematic top view of an optoelectronic module described here according to an eighth exemplary embodiment
- FIG. 15 shows a schematic top view of an optoelectronic module described here according to a ninth exemplary embodiment
- FIG. 16 shows a schematic sectional view of a device with a plurality of optoelectronic modules described here according to a tenth exemplary embodiment
- Figure 17 shows a control concept of an optoelectronic module described here according to a third exemplary embodiment
- Figure 18 shows a control concept of an optoelectronic module described here according to a fourth exemplary embodiment.
- Identical, similar or identically acting elements are provided with the same reference symbols in the figures.
- the figures and the size relationships between the elements shown in the figures are not to be considered to scale. Rather, individual elements can be shown exaggeratedly large for better display and/or for better comprehensibility.
- FIG. 1 shows a schematic sectional view of an optoelectronic module 1 described here according to a first exemplary embodiment.
- the optoelectronic module 1 includes a semiconductor component 10 designed to emit electromagnetic radiation.
- the electromagnetic radiation preferably comprises a spectral distribution with a main wavelength in the visible spectral range.
- the semiconductor component 10 is designed in particular to emit coherent radiation with a modulatable main wavelength Xi to X n .
- the semiconductor component 10 includes a laser component with a sampled grating and a distributed Bragg reflector (English: Sample Grating Distributed Bragg Reflector Laser, short: SG-DBR).
- the semiconductor component 10 is formed with a laser component with an external resonator.
- the main wavelength Xi to X n can be modulated with a frequency of at least 500 Hz, preferably at least 1 kHz and particularly preferably at least 2 kHz.
- a high modulation frequency enables an advantageously short period of time in which a specific main wavelength can be emitted.
- a high modulation frequency also increases a number of different main wavelengths Xi to X n , which can be provided in a predetermined display period TD.
- the optoelectronic module 1 comprises at least one distribution structure 20 with a plurality of passive and wavelength-selective distribution elements 210, at least one input waveguide 201 and a plurality of output waveguides 202.
- the distribution structure 20 includes a planar waveguide structure. This enables a particularly compact design with advantageously low optical coupling losses.
- the distribution structure 20 is set up to distribute electromagnetic radiation from the at least one input waveguide 201 to the output waveguides 202 in a predetermined intensity ratio.
- the electromagnetic radiation emitted by the semiconductor component 10 enters the distribution structure 20 through the input waveguide 201.
- the electromagnetic radiation then emerges from the distribution structure 20 through the output waveguides 202.
- Each output waveguide 202 is assigned exactly one distribution element 210.
- Each distribution element 210 is set up to control exactly one output waveguide 202.
- the distribution elements 210 are designed as Mach-Zehnder interferometers, as dielectric interference thin-film filters, as waveguide grating routers or as micro-ring resonators.
- passive distribution elements 210 do not require any additional control.
- the distribution elements 210 are designed to select electromagnetic radiation according to its main wavelength Xi to X n . In other words, each distribution element 210 is assigned to a main wavelength Xi to X n .
- the distribution elements 210 have a spectral passband with a bandwidth of at most 2 nm, preferably at most 1 nm.
- the distribution elements 210 have a high radiation permeability in the pass region. For example, electromagnetic radiation outside the pass band is reflected or absorbed by the distribution element 210.
- a small bandwidth enables an advantageously high number of distribution elements 210 to be controlled with a semiconductor component 10 that emits electromagnetic radiation with a limited bandwidth.
- the optoelectronic module 1 further comprises a plurality of conversion structures 30.
- the conversion structures 30 are downstream of the distribution structure 20.
- the conversion structures 30 are set up to convert electromagnetic radiation of a first wavelength to electromagnetic radiation with a second wavelength that is different from the first wavelength.
- the conversion structures 30, for example, cause one partial or complete conversion of the incoming electromagnetic radiation.
- Each conversion structure 30 includes an outcoupling element 301, a diffuser element 302 and a conversion element 303.
- the outcoupling element 301 is an optical grating coupler. Grating couplers enable an advantageously high efficiency with which electromagnetic radiation is coupled out of a waveguide into an area.
- the diffuser element 302 is arranged downstream of the decoupling element 301.
- the diffuser element 302 homogenizes electromagnetic radiation emerging from the coupling element 301.
- the diffuser element 302 for example, has a large number of small scattering centers. If parallel light rays hit different points on the diffuser element 302, they are distributed in different directions and thus generate diffuse light.
- the conversion element 303 contains a conversion material.
- the conversion material is designed as a ceramic plate.
- the diffuser element 302 is arranged between the conversion element 303 and the decoupling element 301.
- FIG. 1 shows a schematic sectional view of an optoelectronic module 1 described here according to a second exemplary embodiment.
- the optoelectronic module 1 includes a semiconductor component 10 designed to emit electromagnetic radiation.
- the semiconductor component 10 is set up to emit coherent radiation with a main wavelength in the blue spectral range.
- the main wavelength is greater than or equal to 440 nm and less than or equal to 475 nm.
- the main wavelength is preferably less than or equal to 465 nm.
- the optoelectronic module 1 comprises a distribution structure 20 with a plurality of distribution elements 210, at least one input waveguide 201 and a plurality of output waveguides 202.
- the distribution structure 20 includes a planar waveguide structure. This enables a particularly compact design with advantageously low optical coupling losses.
- the distribution structure 20 is set up to distribute electromagnetic radiation from the at least one input waveguide 201 to the output waveguides 202 in a predetermined intensity ratio.
- the electromagnetic radiation emitted by the semiconductor component 10 enters the distribution structure 20 through the input waveguide 201.
- the electromagnetic radiation then emerges from the distribution structure 20 through the output waveguides 202.
- the distribution elements 210 are active and controllable coupling elements. Active distribution elements 210 can advantageously be controlled particularly precisely.
- the distribution elements 210 are in the form of controllable directional couplers or as controllable directional couplers with phase reversal.
- a controllable directional coupler with phase reversal has an advantageously high tolerance to manufacturing fluctuations.
- each distribution element 210 includes a Mach-Zehnder interferometer.
- the distribution elements 210 are advantageously designed as electro-optically controllable components. In other words, an intensity distribution on the outputs of a distribution element 210 can be adjusted using an electrical control signal.
- a control line 211 is assigned to each distribution element 210.
- the optoelectronic module 1 further comprises a control device 212 which is connected to the control lines 211.
- Each distribution element 210 can be controlled by the control device 212 independently of the other distribution elements 210 via the control lines 211.
- the control device can set a division ratio of each distribution element independently of one another by applying suitable electrical potentials.
- the distribution elements 210 can be modulated with a frequency of at least 0.5 GHz, preferably 1 GHz, particularly preferably 10 GHz.
- modulation of a distribution element 210 refers to a complete switching process, i.e. a complete switching from a first output to a second output of a distribution element.
- a particularly high modulation frequency enables an advantageously increased number of output waveguides 202, which can be controlled within a predetermined display period TD.
- the optoelectronic module 1 further comprises a plurality of conversion structures 30. The conversion structures 30 are arranged downstream of the distribution structure 20.
- Conversion structures 30 are set up to convert electromagnetic radiation of a first wavelength to electromagnetic radiation with a second wavelength that is different from the first wavelength.
- the conversion structures 30, for example, effect a partial or complete conversion of the incoming electromagnetic radiation.
- the main wavelength of the semiconductor component 10 is advantageously selected such that it serves as an efficient pump wavelength for the conversion structure 30.
- Each conversion structure 30 includes an outcoupling element 301, a diffuser element 302 and a conversion element 303.
- the outcoupling element 301 is an optical grating coupler. Grating couplers enable an advantageously high efficiency with which electromagnetic radiation is coupled out of a waveguide into an area.
- the diffuser element 302 is arranged downstream of the decoupling element 301.
- the diffuser element 302 homogenizes electromagnetic radiation emerging from the coupling element 301.
- the diffuser element 302 for example, has a large number of small scattering centers. If parallel light rays hit different points on the diffuser element 302, they are distributed in different directions and thus generate diffuse light.
- the conversion element 303 contains a conversion material. In particular, the conversion material is designed as a ceramic plate.
- the diffuser element 302 is arranged between the conversion element 303 and the decoupling element 301.
- An optical element 40 is arranged downstream of the conversion structures 30.
- the optical element 40 is transparent to the electromagnetic radiation emerging from the conversion structures 30.
- the optical element is a projection lens.
- FIG. 3 shows a schematic top view of an optoelectronic module 1 described here according to a third exemplary embodiment.
- the third exemplary embodiment essentially corresponds to the second exemplary embodiment shown in FIG.
- the distribution structure 20, the conversion structures 30 and a coupling element 2011 are arranged on a common carrier 60.
- the carrier 60 is formed, for example, with one of the following materials: III/V compound semiconductor material, silicon on an insulator (English: silicon-on-insulator, SOI for short), silicon dioxide, silicon nitride, indium phosphide, gallium arsenide, diamond, diamond on an insulator ( English: Diamond-on-Insulator, DOI for short), lithium niobate, aluminum oxide, aluminum nitride, gallium nitride.
- III/V compound semiconductor material silicon on an insulator (English: silicon-on-insulator, SOI for short), silicon dioxide, silicon nitride, indium phosphide, gallium arsenide, diamond, diamond on an insulator ( English: Diamond-on-Insulator, DOI for short), lithium niobate, aluminum oxide, aluminum nitride, gallium nitride.
- the coupling element 2011 is assigned to the input waveguide 201.
- the coupling element 2011 is designed as a grid coupler.
- the semiconductor component 10 is optically connected to the coupling element 2011 via an optical waveguide 50.
- the electromagnetic radiation from the semiconductor component 10 first enters the optical waveguide 50 and is then coupled from the optical waveguide 50 via the coupling element 2011 into the input waveguide 201.
- the coupling element 2011 in particular enables improved coupling efficiency between the semiconductor component 10 and the input waveguide 201.
- Figure 4 shows a schematic top view of an optoelectronic module 1 described here according to a fourth exemplary embodiment.
- the fourth exemplary embodiment essentially corresponds to the third exemplary embodiment shown in FIG.
- the semiconductor component 10 is arranged on the carrier 60.
- a particularly compact optoelectronic module 1 can thus be provided.
- FIG. 5 shows a perspective schematic sectional view of an optoelectronic module 1 described here according to a fifth exemplary embodiment.
- the fifth exemplary embodiment essentially corresponds to the third exemplary embodiment shown in FIG.
- a heat sink 70 is arranged on a rear side of the carrier 60.
- the heat sink 70 enables efficient removal of heat from the conversion structures 30.
- the heat sink 70 is formed with a material that has a particularly high thermal conductivity, for example with a metal or a ceramic.
- a plurality of optical elements 40 are arranged downstream of the conversion structures 30.
- the optical elements 40 are designed for beam shaping.
- the optical elements are in particular made with a radiation-permeable polymer, for example polymethyl methacrylate, or PMMA for short, or a Glass formed.
- the optical elements 40 advantageously cause a collimation of the electromagnetic radiation emerging from the conversion structures 30.
- Figure 6 shows a control concept of an optoelectronic module 1 described here according to a first exemplary embodiment.
- An optoelectronic module 1 with a semiconductor component 10 and a distribution structure 20 is controlled.
- the semiconductor component 10 emits electromagnetic radiation with a constant main wavelength in the visible spectral range.
- the distribution structure 20 comprises a plurality of active and controllable distribution elements 210.
- the distribution elements 210 each have one input and two outputs.
- the outputs of the distribution elements 210 are provided with unique designations Al, A2, Bl, B2, B3 and B4.
- the control concept shows a course of the control of all outputs Al, A2, Bl, B2, B3 and B4 of the distribution elements 210 and the optical output power of the semiconductor component 10 over a display period TD.
- the representation period TD describes a period in which a desired intensity distribution of the electromagnetic radiation is provided on the output waveguides 202.
- the display period TD is so short that a human observer does not get the impression of flickering.
- the display period TD is at most 1/30 s, preferably at most 1/60 s and particularly preferably at most 1/100 s long.
- the distribution elements 210 act as optical switches. In the representation period TD, the distribution elements 210 switched several times. The value “1" means this output is active and electromagnetic radiation comes out at this output. The value “0” means this output is not active and no electromagnetic radiation comes out at this output. At a first point in time within the display period TD, the outputs Al and Bl of the distribution elements 210 are active. Consequently, electromagnetic radiation emerges from the top output waveguide 202 and is emitted through the top conversion structure 30.
- the distribution elements 210 are modulated with a frequency of at least 0.5 GHz, preferably at least 1 GHz, particularly preferably at least 10 GHz.
- the optical output power of the semiconductor component 10 is modulated synchronously with the distribution elements 210 in the representation period TD.
- each output waveguide 202 can be illuminated with a desired intensity distribution.
- Figure 7 shows a control concept of an optoelectronic module 1 described here according to a second exemplary embodiment.
- the structure of the controlled optoelectronic module 1 essentially corresponds to the optoelectronic module 1 shown in FIG. 6.
- an optical output power of the semiconductor component 10 is constant in the representation period TD.
- the distribution elements 210 act as variably modulated beam splitters, the distribution of which is constant over the display period TD.
- the first distribution element 210 with the outputs Al and A2 is controlled in such a way that 50% of the irradiated intensity is distributed to the output Al and 50% of the irradiated intensity to the output A2.
- multiple switching operations of the distribution elements 210 within the display period TD can be dispensed with.
- modulation of the optical output power of the semiconductor component 10 can be dispensed with.
- the semiconductor component 10 is in cw operation.
- an output waveguide 202 can be provided in the distribution structure 20 as a light sink. Excess optical power can thus be absorbed in the light sink.
- FIG 8 shows a schematic sectional view of a conversion structure 30 described here according to a first exemplary embodiment.
- the conversion structure 30 includes a decoupling element 301, a diffuser element 302 and a conversion element 303.
- the decoupling element 301 is, for example, an optical grating coupler. Grating couplers enable an advantageously high level of efficiency with which electromagnetic radiation is coupled out of a waveguide into an area.
- the decoupling element 301 has a structuring with a A plurality of elevations 3010 and depressions 3011 on a side facing the diffuser element 302.
- the diffusor element 302 is arranged between the decoupling element 301 and the conversion element 303.
- the diffuser element homogenizes electromagnetic radiation emerging from the coupling element 301.
- the diffuser element 302 has a large number of scattering centers. If parallel light rays hit different points on the diffuser element 302, they are distributed in particular in different directions and thus generate diffuse light.
- the conversion element 303 contains a conversion material.
- the conversion material is designed as a ceramic plate.
- the conversion element 303 converts electromagnetic radiation of a first main wavelength Xi into electromagnetic radiation of a second main wavelength X2.
- the second main wavelength X2 is greater than the first main wavelength Xi.
- a first electromagnetic radiation is partially or completely converted.
- the conversion element 303 emits a mixed radiation of converted and unconverted electromagnetic radiation.
- the conversion element 303 is mechanically self-supporting.
- Figure 9 shows a schematic sectional view of a conversion structure 30 described here according to a second exemplary embodiment.
- the second exemplary embodiment essentially corresponds to the first exemplary embodiment shown in FIG. 8.
- the conversion structure 30 does not include any Diffusion element 302.
- the conversion element 303 is arranged directly on the decoupling element 301.
- the conversion element 303 is mechanically self-supporting and rests on the elevations 3010 of the decoupling element 301.
- Figure 10 shows a schematic sectional view of a conversion structure 30 described here according to a third exemplary embodiment.
- the third exemplary embodiment essentially corresponds to the second exemplary embodiment shown in FIG. 9.
- the conversion element 303 is applied to the decoupling element 301 by means of spray coating.
- the conversion element 303 is formed with a matrix material in which particles of a phosphor are embedded.
- a particularly suitable matrix material is a radiation-permeable polymer, for example a polysiloxane.
- the conversion element 303 extends into the depressions 3011 of the decoupling element 301.
- the conversion element 303 projects beyond the decoupling element 301 in a lateral direction. This advantageously results in particularly good adhesion between the decoupling element 301 and the conversion element 303.
- Figure 11 shows a schematic sectional view of a conversion structure 30 described here according to a fourth exemplary embodiment.
- the fourth exemplary embodiment essentially corresponds to the third exemplary embodiment shown in FIG. 10.
- the conversion element 303 is structured.
- the conversion element 303 is structured, for example, using photolithography.
- the lateral extent of the conversion element 303 corresponds to that lateral extent of the elevations 3010 of the structuring of the decoupling element 301.
- Figure 12 shows a schematic sectional view of an optoelectronic module 1 described here according to a sixth exemplary embodiment.
- the sixth exemplary embodiment essentially corresponds to the first exemplary embodiment shown in FIG.
- the semiconductor component 10 comprises a plurality of semiconductor emitters 11, 12, 13.
- a first semiconductor emitter 11 emits electromagnetic radiation with a variable first main wavelength Xi in a first spectral range
- a second semiconductor emitter 12 emits electromagnetic radiation with a variable second main wavelength X 3 in a second spectral range
- a third semiconductor emitter 13 emits electromagnetic radiation with a variable third main wavelength X 3 in a third spectral range.
- the first main wavelength Xi, the second main wavelength X2 and the third main wavelength X 3 are different from each other.
- the spectral ranges of the first electromagnetic radiation, the second electromagnetic radiation and the third electromagnetic radiation preferably do not overlap.
- the semiconductor component 10 can emit electromagnetic radiation over a larger bandwidth.
- the first, second and third main wavelengths Xi, X2, X 3 are identical. If each semiconductor emitter 11, 12, 13 is assigned its own input waveguide 201, you can a distinction between the first, second and third main wavelengths Xi, X2, X 3 is omitted.
- a particularly small deviation in the emission wavelength in the individual output waveguides 202 is possible.
- An input waveguide 201 is assigned to each semiconductor emitter 11 , 12 , 13 .
- the required number of distribution elements 210 in the distribution structure 20 can be reduced.
- the first semiconductor emitter 11 is assigned a first number of output waveguides 202
- the second semiconductor emitter 12 is assigned a second number of output waveguides 202
- the third semiconductor emitter 13 is assigned a third number of output waveguides 202.
- FIG. 13A shows a schematic top view of an optoelectronic module 1 described here according to a seventh exemplary embodiment.
- the seventh exemplary embodiment essentially corresponds to the first exemplary embodiment shown in FIG.
- the distribution elements 210 are designed as micro-ring resonators. Electromagnetic radiation with different main wavelengths Xi to X n is emitted from the optoelectronic semiconductor component 10 .
- Each distribution element 210 has a passband for one of the main wavelengths Xi to X n .
- a distribution element 210 is assigned to each output waveguide 202.
- Coupling element 2011 are arranged on a common carrier 60.
- the carrier 60 is, for example, with one of the following materials: III/V compound semiconductor material, silicon on an insulator
- Figure 13B shows a schematic sectional view of an optoelectronic module 1 described here according to the seventh exemplary embodiment.
- Figure 13B shows a section through Figure 13A along section line AA.
- the structure of the conversion structure 30 can be seen in the sectional view.
- a diffuser element 302 is arranged between a conversion element 303 and a decoupling element 301.
- the input waveguide 201 is on the carrier 60 arranged.
- FIG. 14 shows a schematic top view of an optoelectronic module 1 described here according to an eighth exemplary embodiment.
- the eighth exemplary embodiment essentially corresponds to the third exemplary embodiment shown in FIG.
- the distribution structure 20 is passive, wavelength-selective filter elements.
- the distribution elements 210 are designed as passive Mach-Zehnder interferometers. Since interferometers are wavelength sensitive, they are suitable for wavelength division multiplexing.
- Figure 15 shows a schematic top view of an optoelectronic module 1 described here according to a ninth exemplary embodiment.
- the ninth exemplary embodiment essentially corresponds to the first exemplary embodiment shown in FIG.
- the distribution elements 210 are designed as interference thin-film filters.
- the distribution elements 210 and a plurality of reflectors 203 are arranged on a support 60.
- the reflectors 203 are formed, for example, with a broadband reflecting material, in particular silver.
- the carrier 60 is designed as a gradient index rod.
- the main wavelengths Xi to X n are separated by an arrangement of different filters.
- the incident electromagnetic radiation is directed to the filters, each of which allows a single main wavelength to pass and blocks the others.
- the incident electromagnetic radiation is passed through a sequence of narrow-band interference thin-film filters, each of which transmits one wavelength in a pass band and reflects all other wavelengths onto the following filter.
- Figure 16 shows a schematic sectional view of a device with a plurality of optoelectronic modules 1 described here according to a tenth exemplary embodiment.
- Two optoelectronic modules 1 are arranged in such a way that the conversion structures 30 of the two optoelectronic modules 1 adjoin one another.
- the optoelectronic modules 1 are essentially identical to the exemplary embodiment of an optoelectronic module shown in FIG.
- the use of several optoelectronic modules 1 enables particularly easy scalability of the number of controllable conversion structures 30.
- the optoelectronic modules used are preferably designed identically.
- FIG 17 shows a control concept of an optoelectronic module 1 described here according to a third exemplary embodiment.
- An optoelectronic module 1 with a semiconductor component 10 and a distribution structure 20 is controlled.
- the semiconductor component 10 emits electromagnetic radiation with different discrete main wavelengths, preferably in the visible spectral range.
- the distribution structure 20 includes a plurality of distribution elements 210, which are provided as passive and wavelength-selective filter elements.
- the distribution elements 210 each have an output.
- the outputs of the distribution elements 210 are provided with unique designations B1, B2, B3 and B4.
- the control concept shows a course of the main wavelength Xi to X4 emitted by the semiconductor component 10 and the optical output power of the semiconductor component 10 over a display period TD.
- the representation period TD describes a period in which a desired intensity distribution of the electromagnetic radiation is provided on the output waveguides 202. It is advantageous that the display period TD is so short that that there is no impression of flickering for a human observer.
- the display period TD is at most 1/30 s, preferably at most 1/60 s and particularly preferably at most 1/100 s long.
- the optical output power of the semiconductor component 10 is constant in the representation period TD.
- each output waveguide 202 can be illuminated with a desired intensity distribution.
- Figure 18 shows a control concept of an optoelectronic module 1 described here according to a fourth exemplary embodiment.
- the structure of the controlled optoelectronic module 1 essentially corresponds to the optoelectronic module 1 shown in FIG. 17.
- an optical output power of the semiconductor component 10 is modulated in the representation period TD.
- Main wavelength can be set constant.
- the optical output power of the semiconductor component 10 is modulated in the display period TD synchronously with the modulation of the main wavelengths.
- the semiconductor component 1 does not emit any electromagnetic radiation with the first main wavelength in order not to illuminate the output waveguide 202 with the output B1.
- a desired intensity distribution on the output waveguides 202 can thus be achieved by modulating the output power of the semiconductor component 10.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Optical Integrated Circuits (AREA)
- Optical Couplings Of Light Guides (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Semiconductor Lasers (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18/847,181 US20250189733A1 (en) | 2022-03-17 | 2023-03-07 | Optoelectronic module and method for operating an optoelectronic module |
| JP2024550240A JP7839291B2 (ja) | 2022-03-17 | 2023-03-07 | オプトエレクトロニクスモジュールおよびオプトエレクトロニクスモジュールの動作方法 |
| DE112023000438.2T DE112023000438A5 (de) | 2022-03-17 | 2023-03-07 | Optoelektronisches modul und verfahren zum betrieb eines optoelektronischen moduls |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022106271.6 | 2022-03-17 | ||
| DE102022106271.6A DE102022106271A1 (de) | 2022-03-17 | 2022-03-17 | Optoelektronisches modul und verfahren zum betrieb eines optoelektronischen moduls |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023174752A1 true WO2023174752A1 (de) | 2023-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/055711 Ceased WO2023174752A1 (de) | 2022-03-17 | 2023-03-07 | Optoelektronisches modul und verfahren zum betrieb eines optoelektronischen moduls |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250189733A1 (de) |
| JP (1) | JP7839291B2 (de) |
| DE (2) | DE102022106271A1 (de) |
| WO (1) | WO2023174752A1 (de) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2523434A (en) * | 2014-02-24 | 2015-08-26 | Rockley Photonics Ltd | Detector remodulator and optoelectronic switch |
| US20170184788A1 (en) * | 2014-07-28 | 2017-06-29 | The University Of Connecticut | Optoelectronic integrated circuitry for transmitting and/or receiving wavelength-division multiplexed optical signals |
| US20190324199A1 (en) * | 2012-12-13 | 2019-10-24 | Luxtera, Inc. | Method And System For Stabilized Directional Couplers |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5727087A (en) * | 1980-07-25 | 1982-02-13 | Toshiba Corp | Wavelength sweeping laser |
| JPH0336530A (ja) * | 1989-07-03 | 1991-02-18 | Sharp Corp | 光整形装置 |
| JPH07154021A (ja) * | 1993-12-01 | 1995-06-16 | Ibiden Co Ltd | 波長可変型青色レーザ装置 |
| JP3925769B2 (ja) * | 2000-03-24 | 2007-06-06 | 関西ティー・エル・オー株式会社 | 2次元フォトニック結晶及び合分波器 |
| JP2004111766A (ja) * | 2002-09-20 | 2004-04-08 | Toshiba Corp | 窒化ガリウム系半導体素子及びその製造方法 |
| US7758224B2 (en) * | 2004-10-01 | 2010-07-20 | Nichia Corporation | Light emitting device |
| JP5079708B2 (ja) * | 2005-12-14 | 2012-11-21 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 発光装置 |
| JP5200349B2 (ja) | 2006-08-31 | 2013-06-05 | ソニー株式会社 | 投射装置および画像表示装置 |
| US7649918B2 (en) | 2007-10-30 | 2010-01-19 | Corning Incorporated | Multi-component wavelength conversion devices and lasers incorporating the same |
| KR101808516B1 (ko) * | 2010-08-03 | 2018-01-18 | 엘지디스플레이 주식회사 | 디스플레이 패널 및 이의 구동 방법 |
| CN103443535A (zh) * | 2011-03-30 | 2013-12-11 | 奥林巴斯株式会社 | 光源单元、光变换单元、光源装置以及光源系统 |
| DE102013213138A1 (de) * | 2013-07-04 | 2015-01-08 | Zumtobel Lighting Gmbh | Beleuchtungsanordnung mit Laser als Lichtquelle |
| JP2015122202A (ja) * | 2013-12-24 | 2015-07-02 | コイト電工株式会社 | Led群発光回路及びled照明装置 |
| JPWO2017006796A1 (ja) * | 2015-07-03 | 2018-04-19 | 日本碍子株式会社 | グレーティング素子および発光装置 |
| JP6493053B2 (ja) * | 2015-07-17 | 2019-04-03 | 日亜化学工業株式会社 | 発光装置 |
| WO2020150744A1 (en) | 2019-01-18 | 2020-07-23 | Soraa Laser Diode, Inc. | Laser-based waveguide-coupled white light system for a lighting application |
-
2022
- 2022-03-17 DE DE102022106271.6A patent/DE102022106271A1/de not_active Withdrawn
-
2023
- 2023-03-07 JP JP2024550240A patent/JP7839291B2/ja active Active
- 2023-03-07 US US18/847,181 patent/US20250189733A1/en active Pending
- 2023-03-07 WO PCT/EP2023/055711 patent/WO2023174752A1/de not_active Ceased
- 2023-03-07 DE DE112023000438.2T patent/DE112023000438A5/de active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190324199A1 (en) * | 2012-12-13 | 2019-10-24 | Luxtera, Inc. | Method And System For Stabilized Directional Couplers |
| GB2523434A (en) * | 2014-02-24 | 2015-08-26 | Rockley Photonics Ltd | Detector remodulator and optoelectronic switch |
| US20170184788A1 (en) * | 2014-07-28 | 2017-06-29 | The University Of Connecticut | Optoelectronic integrated circuitry for transmitting and/or receiving wavelength-division multiplexed optical signals |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2025513993A (ja) | 2025-05-02 |
| JP7839291B2 (ja) | 2026-04-01 |
| DE102022106271A1 (de) | 2023-09-21 |
| DE112023000438A5 (de) | 2024-09-26 |
| US20250189733A1 (en) | 2025-06-12 |
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