Abstract: An optical device is provided. The optical device includes a ring waveguide and a bus waveguide. The ring waveguide includes a coupling region. The bus waveguide is disposed adjacent to and spaced apart from the coupling region of the ring waveguide. The bus waveguide includes a coupling structure corresponding to the coupling region.

Abstract: Described herein are photonic communication platforms and related packages. In one example, a photonic package includes a substrate carrier having a recess formed through the top surface of the substrate carrier. The substrate carrier may be made of a ceramic laminate. A photonic substrate including a plurality of photonic modules is disposed in the recess. The photonic modules may be patterned using a common photomask, and as a result, may share a same layer pattern. A plurality of electronic dies may be positioned on top of respective photonic modules. The photonic modules enable communication among the dies in the optical domain. Power delivery substrates may be used to convey electric power from the substrate carrier to the electronic dies and to the photonic substrate. Power delivery substrates may be implemented, for example, using bridge dies or interposers (e.g., silicon or organic interposers).

Abstract: Generally, embodiment(s) disclosed herein may include modular luminaires and customizable luminaire combinations to produce desired overall illumination patterns, modular luminaires interchangeable between one or more lighting systems/luminaires having differing configurations, and/or luminaires with portions thereof formed primarily by optical waveguides, e.g., a wall sconce where primarily only waveguides extend from the wall. Further, contemplated throughout this disclosure is modification of panel-style and/or blade-style waveguide(s) for use with luminaire configurations having different sizes, shapes, and structural elements including as modular luminaires for use in creating further customizable lighting systems/luminaires.

Abstract: An optical link system for computation, preferably including a photonics substrate and a plurality of electronics modules, such as processors, memory controllers, and/or switches, which are preferably bonded to the photonics substrate. A photonics substrate, preferably including a plurality of optical links including waveguides and optical transducers. A method for optical link system operation, preferably including operating electronics modules and using optical links, optionally in cooperation with electronics modules such as switches, to transfer information between the electronics modules.

Abstract: Structures for an edge coupler and methods of forming a structure for an edge coupler. The structure includes a waveguide core over a dielectric layer, and a back-end-of-line stack over the waveguide core and the dielectric layer. The back-end-of-line stack includes an interlayer dielectric layer, a side edge, a first feature, a second feature, and a third feature laterally arranged between the first feature and the second feature. The first feature, the second feature, and the third feature are positioned on the interlayer dielectric layer adjacent to the side edge, and the third feature has an overlapping relationship with a tapered section of the waveguide core.

Abstract: An optical ferrule assembly includes a hybrid optical ferrule having a glass portion assembled to a polymeric portion. The polymeric portion includes a groove for receiving and supporting an optical fiber having opposing open front and back ends. A light redirecting member includes an input surface for receiving light from the optical fiber and a light redirecting side. The open back end of the groove and the input surface define a recessed region therebetween. The glass portion includes an optically transparent glass insert disposed in the recessed region conforming in shape to an internal shape of the recessed region. An optical fiber is received and supported in the groove. The optical fiber includes a fiber end laser welded to the glass insert so that a central light ray from the optical fiber propagates through the glass insert before being received and redirected by the light redirecting side.

Abstract: An optical transceiver with a built-in heat transfer structure is described. The heat transfer structure can connect one or more circuit regions of the optical transceiver to a heat sink while bypassing circuit regions that may impede the transfer of heat from the one or more circuit regions. The heat transfer structure may directly contact the one or more circuit regions, and the heat sink and may include an opening to avoid contact with the circuit regions to be bypassed.

Abstract: A semiconductor device is vertically mounted on a medium such as a printed circuit board (PCB). The semiconductor device comprises a block of semiconductor dies, mounted in a vertical stack without offset. Once formed and encapsulated, side grooves may be formed in the device exposing electrical conductors of each die within the device. The electrical conductors exposed in the grooves mount to electrical contacts on the medium to electrically couple the semiconductor device to the medium.

Abstract: To provide an optical multiplexing circuit that can accurately monitor light of a plurality of wavelengths, and that can tolerate degradation of LDs. An optical multiplexing circuit includes m sets of multiplexers configured to multiplex light output from n connection waveguides being a plurality of connection waveguides wherein a multiplexing unit configured to input and multiplex light output from the m sets of the multiplexers from m input waveguides, an output waveguide configured to output light multiplexed by the multiplexing unit, and n×m or m branching units being inserted into n×m connection waveguides of the plurality of connection waveguides or the m input waveguides are provided on a same substrate.

Abstract: Disclosed is an optoelectromechanical switch that includes: an optical feedline disposed on an isolation substrate that receives resonator light that is subject to optical communication to a resonator when a cavity length of the resonator supports an electromagnetic mode at the wavelength of the resonator light; a resonator including: a low refractive index optical layer and receives substrate electrical counter potential; a non-conductive spacer; the electrically conductive membrane and that receives a membrane electrical potential and deflects toward and away from the electrically conductive high-index optical waveguide based on a difference in potential between the membrane electrical potential and the substrate electrical counter potential; the cavity length that is variable and under electromechanical control.

Abstract: An intact semiconductor wafer (wafer) includes a plurality of die. Each die has a top layer including routings of conductive interconnect structures electrically isolated from each other by intervening dielectric material. A top surface of the top layer corresponds to a top surface of the wafer. Below the top layer, each die has a device layer including optical devices and electronic devices. Each die has a cladding layer below the device layer and on a substrate of the wafer. Each die includes a photonic test port within the device layer. For each die, a light transfer region is formed within the intact wafer to extend through the top layer to the photonic test port within the device layer. The light transfer region provides a window for transmission of light into and out of the photonic test port from and to a location on the top surface of the wafer.

Abstract: A cavity enhanced absorption spectroscopy (CEAS) system is provided that utilizes collimators the incorporate gradient index (GRIN) lenses in lieu of conventional spherical or aspheric refractive lenses. The use of smaller diameter GRIN lenses facilitates a reduced initial beam size entering the sample cavity, which reduces self-interference noise and increases a signal to noise ratio of the measurements. Further, a reduced size and mass of the GRIN lens can reduce a size of the mounting hardware utilized to mount the optical components, which enables more laser beams to be coupled to a single gas cell compared to a similar gas cell integrated with conventional refractive collimators. A larger number of lasers enables more gas peaks to be measured substantially simultaneously using the CEAS system.

Abstract: A wireless optical communication network includes a base station established for wireless optical communication using a wireless optical signal and including a participant apparatus moveable with respect to the base station including a communication unit established for wireless optical communication. Further, the participant apparatus includes a deflection unit configured to deflect at least part of the wireless optical signal between a first direction between the deflection unit and the communication unit and a second direction between the deflection unit and the base station.

Abstract: A method of fabricating a waveguide structure to form a solid-core waveguide from a waveguiding layer may include etching a fluid channel into the waveguiding layer, etching a first air-gap and a second air gap into the waveguiding layer, wherein etching the first and the second air-gaps creates a solid-core waveguide in the waveguiding layer between the first air-gap and the second air-gap. A method for fabricating a waveguide structure to form a solid-core waveguide may include forming a first trench, a second trench, and a third trench in a substrate layer, and depositing a waveguiding layer on the machined substrate layer, wherein depositing the waveguiding layer creates a hollow core of a fluid channel in a location corresponding to the first trench, and a solid-core waveguide portion in the waveguiding layer in a location corresponding to an area between the second trench and the third trench.

Abstract: Aspects of the present disclosure are directed to structural modifications introduced in a waveguide structure in order to more tightly pack adjacent waveguide turns in an optical gyroscope fabricated on a planar silicon platform as a photonic integrated circuit. Increasing number of turns of the gyroscope coil increases total waveguide length as well as enclosed area of the gyroscope loop, which translates to increased sensitivity to rotational measurement.

Abstract: Waveguide structures and methods of fabricating a waveguide structure. The structure includes a first waveguide core, a second waveguide core, and a third waveguide core adjacent to the first waveguide core and the second waveguide core. The third waveguide core is laterally separated from the first waveguide core by a first slot, and the third waveguide core is laterally separated from the second waveguide core by a second slot. The first waveguide core and the second waveguide core comprise a first material, and the third waveguide core comprises a second material that is different in composition from the first material.

Abstract: A semiconductor package includes a first optical transceiver, a second optical transceiver, a third optical transceiver, and a plasmonic waveguide. The first optical transceiver, the second optical transceiver, and the third optical transceiver are stacked in sequential order. The first optical transceiver and the third optical transceiver respectively at least one optical input/output portion for transmitting and receiving an optical signal. The plasmonic waveguide includes a first segment, a second segment, and a third segment optically coupled to one another. The first segment is embedded in the first optical transceiver. The second segment extends through the second optical transceiver. The third segment is embedded in the third optical transceiver. The first segment is optically coupled to the at least one optical input/output portion of the first optical transceiver and the third segment is optically coupled to the at least one optical input/output portion of the third optical transceiver.

Abstract: A wearable device may include a head-mounted display (HMD) for rendering a three-dimensional (3D) virtual object which appears to be located in an ambient environment of a user of the display. The relative positions of the HMD and one or more eyes of the user may not be in desired positions to receive image information outputted by the HMD. For example, the HMD-to-eye vertical alignment may be different between the left and right eyes. The wearable device may determine if the HMD is level on the user's head and may then provide the user with a left-eye alignment marker and a right-eye alignment marker. Based on user feedback, the wearable device may determine if there is any left-right vertical misalignment and may take actions to reduce or minimize the effects of any misalignment.

Abstract: A single-photon source including a monomode photonic wire wherein a single-photon emitter is located, the photonic wire being formed of two coaxial parts that are distinct and spaced from one another along the longitudinal axis, including a lower part resting in contact with a support substrate and including the single-photon emitter.

Abstract: The invention relates to a laser projection arrangement. The arrangement includes a sub-mount carrier with a main surface and at least one edge-emitting laser arranged on the sub-mount. The at least one edge-emitting laser is facing the sub-mount and includes at least one laser facet that is located at a predefined distance from the main surface of the sub-mount. A planar light circuit with at least one light guide has an inlet and is arranged on the sub-mount such that the at least one light guide and the inlet is located at the predefined distance from the main surface of the sub-mount facing the at least one laser facet.

Abstract: An optical switch is configured by providing a planar lightwave circuit layer on a top surface of a Si substrate. The circuit layer forms, on the top surface of the substrate, an optical waveguide including an underclad layer, an optical waveguide core, and an overclad layer. The optical waveguide is provided to have a structure configuring a Mach-Zehnder interferometer. A heater is provided at a position just above an arm of the core on the top surface of the clad layer, and power supply electric wires are electrically connected to both ends of the heater. In a local portion including an interface between the clad layer and the top surface of the substrate, trench structure portions as concave grooves are provided.

Abstract: The invention relates to devices and methods for polarization splitting, where a first optical coupler having at least one input port which receives an input light beam, and at least two output ports at which said light beam, is split into at least a first and a second arms at a first end of said arms. At least one total internal reflection mirror is coupled to the second arm for inducing polarization-dependent phase shifts to the light beam propagating in the second arm, and a polarization-dependent phase difference between the second and the first arm. A second optical coupler having input ports is coupled to the second and opposite ends of the arms. The second coupler has at least one first output port at which light is coupled from said arms, so that the polarization-dependent phase shift of the at least one total internal reflection mirror causes polarization-dependent coupling of light from said input port to said output port.

Abstract: A solid-state image sensor is provided. The solid-state image sensor includes a plurality of photoelectric conversion elements. The solid-state image sensor also includes a modulation layer disposed above the photoelectric conversion elements, and the modulation layer has a plurality of modulation segments. The modulation layer includes a plurality of first sub-layers and a plurality of second sub-layers having different refractive indexes. From the top view of the modulation layer, the modulation segments form a first group and a second group, and the second group is adjacent to the first group. The arrangement of the first sub-layers and the second sub-layers in the first group is different from the arrangement of the first sub-layers and the second sub-layers in the second group.

Abstract: The invention provides a microplasma photonic crystal for reflecting, transmitting and/or storing incident electromagnetic energy includes a periodic array of elongate microtubes confining microplasma therein and having a column-to-column spacing, average electron density and plasma column diameter selected to produce a photonic response to the incident electromagnetic energy entailing the increase or suppression of crystal resonances and/or shifting the frequency of the resonances. The crystal also includes electrodes for stimulating microplasma the elongated microtubes Electromagnetic energy can be interacted with the periodic array of microplasma to reflect, transmit and/or trap the incident electromagnetic energy.

Abstract: A silicon modulator where the doping profile varies along the lateral and/or longitudinal position in the transition zones to achieve improved performance in terms of either optical attenuation or contact access resistance or both. A silicon-based modulator includes a waveguide including a contact region and a core region, wherein the waveguide includes a dopant concentration that decreases from the contact region to the core region in a transition zone according to a doping profile that is variable.

Abstract: A method for producing a hologram (1), (1) for security elements (1a) and/or security documents (1b). One or more virtual hologram planes (10) are arranged in front of and/or behind one or more virtual models (20) and/or one or more virtual hologram planes (10) are arranged such that they intersect one or more virtual models (20). One or more virtual light sources (30) are arranged on one or more partial regions of the surface (21) of one or more of the virtual models (20). One or more virtual electromagnetic fields (40) are calculated starting from at least one of the virtual light sources (30) in one or more zones (11) of the one or more virtual hologram planes (10). In the one or more zones (11), in each case, a virtual total electromagnetic field (41) is calculated on the basis of the sum of two or more, of the virtual electromagnetic fields (40) in the respective zone (11). One or more phase images (50) are calculated from the virtual total electromagnetic fields (41) in the one or more zones (11).

Abstract: A waveguide sensor system is provided. The system includes a light source and a waveguide formed from a light transmitting material. Light from the light source enters the waveguide at an input area and travels within the waveguide by total internal reflection to an analyte area and light to be analyzed travels within the waveguide from the analyte area by total internal reflection to an output area. An optical sensor is coupled to the output area and is configured to interact with the light to be analyzed. The system includes a plurality of pores located along the outer surface within the analyte area and formed in the light transmitting material of the waveguide, and the pores are configured to enhance light interaction with the analyte within the analyte area. The pores and analyte area may be protected and/or enhanced with a hydrophobic layer overlaying the pores.

Abstract: An optoelectronic device comprises a substrate, an optoelectronic element mounted on the substrate, a shielding cap providing electromagnetic shielding, at least one optical element attached to the shielding cap, and a detection element configured to detect if the shielding cap is mounted on the substrate.

Abstract: A package structure is provided. The package structure includes a waveguide, a passivation layer, and a reflector. The waveguide is over a substrate. The passivation layer is over the substrate and covers the waveguide. The reflector includes a metal layer and a semiconductor layer on the passivation layer. The metal layer and the first semiconductor layer are in contact with the passivation layer.

Abstract: An optical wireless communication device comprises: at least one of a transmitter and a receiver configured to transmit and/or receive light comprising an optical wireless communication signal representing data; at least one adjustable shutter element associated with the at least one of a transmitter and a receiver, wherein the at least one adjustable shutter element and the associated at least one of the transmitter and the receiver are adjustable between a first configuration and a second configuration such that in the first configuration the at least one adjustable shutter element is configured to at least partially block or partially redirect light having a first selected property and at least partially allow light having a second selected property to pass through unaffected such that transmission and/or reception of the optical wireless communication signal by the at least one of the transmitter and the receiver is substantially altered.

Abstract: A waveguide including a multimode optical fiber joined to a structure for concentrating the guided modes spatially. The concentrating structure exhibits an adiabatic variation in its transverse dimension dpc in the direction of its exit face, and its transverse dimension dpc has a value dpc,in at least equal to a value dfc of the transverse dimension dfc of the core of the multimode optical fiber at the second face thereof.

Abstract: An electrical component is configured to allow electrical cables to be mounted directly to a package substrate, such that electrical traces of the package substrate directly place the electrical cables in electrical communication with an integrated circuit that is mounted to the package substrate without passing through any separable interfaces of an electrical connector.

Abstract: Structures for an edge coupler and methods of forming a structure for an edge coupler. The structure includes a waveguide core over a dielectric layer, and a back-end-of-line stack over the waveguide core and the dielectric layer. The back-end-of-line stack includes an interlayer dielectric layer, a side edge, a first feature, a second feature, and a third feature laterally arranged between the first feature and the second feature. The first feature, the second feature, and the third feature are positioned on the interlayer dielectric layer adjacent to the side edge, and the third feature has an overlapping relationship with a tapered section of the waveguide core.

Abstract: Embodiments of the disclosure provide an integrated circuit (IC) structure, including an absorber layer separated from an optical grating coupler by a cladding material. The absorber is positioned to receive light reoriented through the optical grating coupler.

Abstract: A photonic integrated circuit (PIC) for determining a wavelength of an input signal is disclosed. The PIC comprises: a substrate; a first Mach-Zehnder Interferometer (MZI) disposed over the substrate, comprising first optical waveguides having a first optical path length difference, and configured to receive a first output optical signal from a light source. The PIC also comprises a second Mach-Zehnder Interferometer (MZI) disposed over the substrate, comprising second optical waveguides having a second optical path length difference, which is greater than the first optical path length difference, and configured to receive a second output optical signal from the light source.

Abstract: A silicon-on-insulator (SOI) substrate includes a silicon dioxide layer and a silicon layer. A detection region receives a detected optical mode coupled to an incident optical mode defined by an optical waveguide in the silicon layer. The detection region consists essentially of an intrinsic semiconductor material with a spacing structure surrounding at least a portion of the detection region, which comprises p-type, n-type doped semiconductor regions adjacent to first, second portions, respectively, of the detection region. A dielectric layer is deposited over at least a portion of the spacing structure. The silicon layer is located between the dielectric layer and the silicon dioxide layer. First, second metal contact structures are formed within trenches in the dielectric layer electrically coupling to the p-type, n-type doped semiconductor regions, respectively, without contacting any of the intrinsic semiconductor material of the detection region.

Abstract: Disclosed are a system, method, software tool, etc. for generating a layout indicating the paths for balanced optical waveguides (WGs) of a WG bus. A grid is used to route paths, which extend between corresponding first and second input/output nodes, respectively, and which are within boundaries of a defined area. The paths are automatically rerouted to balance for length and number of bends without overly increasing the lengths of or number of bends in those paths and further without moving the input/output nodes or falling outside the established boundaries. Automatic rerouting of the paths is performed iteratively based on results of various intersection operations related to different path-specific sets of points on the grid to determine when and where to insert additional linear segments and bends into the paths. Then, a layout indicating the balanced paths is generated. Also disclosed is a WG bus structure with balanced optical WGs.

Abstract: A waveguide structure and a method for splitting light is described. The method may include optically coupling a first waveguide and a second waveguide, where the optical coupling may be wavelength insensitive. The widths of the first and second waveguides may be non-adiabatically varying and the optical coupling may be asymmetric between the first and second waveguides. A gap between the first and second waveguides may also be varied non-adiabatically and the gap may depend on the widths of the first and second waveguides. The optical coupling between the first and second waveguides may also occur in the approximate wavelength range of 800 nanometers to 1700 nanometers.

Abstract: A visibly transparent planar structure using a CPA scheme to boost the absorption of a multi-layer thin-film configuration, requiring no surface patterning, to overcome the intrinsic absorption limitation of the absorbing material. This is achieved in a multi-layer absorbing Fabry-Perot (FP) cavity, namely a thin-film amorphous silicon solar cell. Omni-resonance is achieved across a bandwidth of 80 nm in the near-infrared (NIR), thus increasing the effective absorption of the material, without modifying the material itself, enhancing it beyond its intrinsic absorption over a considerable spectral range. The apparatus achieved an increased external quantum efficiency (EQE) of 90% of the photocurrent generated in the 80 nm NIR region from 660 to 740 nm as compared to a bare solar cell. over the spectral range of interest.

Abstract: Provided is an optical communication connector that includes a control unit (42). The control unit (42) controls alignment of a ferrule (170) and a lens (162). The ferrule (170) is to fix a fiber (23). The control unit (42) varies a shape of a shape variation member (21) on the basis of a communication quality of light entering the fiber (23) via the lens (162) to control the alignment.

Abstract: An optical branching/coupling device includes: a first optical branching unit that splits first light with a first and a second wavelength, and outputs second light and third light; a wavelength selector that receives the second light, receives fourth light with a third wavelength, output fifth and sixth light, one of the fifth light and the sixth light including an optical signal of the first wavelength of the second light and including the fourth light, and the other including an optical signal of the second wavelength; a first light switch that receives the fifth light and the sixth light, output one of the fifth light and the sixth light as seventh light, and output the other as eighth light; and a second light switch that receives the third light, receives the eighth light, and outputs the third or the eighth light that have been input as ninth light.

Abstract: Systems and methods are provided to align a first optical component carried by a first semiconductor chip with a second optical component carried by a second semiconductor chip. Each of the first semiconductor chip and the second semiconductor chip may include at least one primary semiconductor chip fiducial which assists in the alignment of the first optical component carried by a first semiconductor chip with a second optical component carried by a second semiconductor chip.

Abstract: In accordance with a method for transferring optical signals to and from an optical component incorporated in a photonic integrated circuit (PIC), an incoming optical signal in a first polarization state is received at a splitter section of a polarization splitter rotator (PSR). The splitter section causes the optical signal to be directed to a first waveguide of a pair of waveguides of the PSR. One of the waveguides rotates a polarization state of an optical signal traversing therethrough into an orthogonal polarization state and the other waveguide maintains a polarization state of an optical signal traversing therethrough. The incoming optical signal is directed from the first waveguide to the optical component. An outgoing optical signal is received in a second waveguide of the pair such that the outgoing optical signal traverses the second waveguide and the splitter section to be output by the PSR.

Abstract: Disclosed is an optical transmitter module including a directly modulated laser transmitter based on a directly modulated laser (DML) and an arrayed waveguide grating (AWG) chip that is vertically polished. The directly modulated laser transmitter includes a directly modulated laser chip array including one or more directly modulated laser chips, an impedance matching circuit that allows each of the one or more directly modulated laser chips to operate at a critical speed of 100 Gbps per channel or higher, and a radio frequency-flexible printed circuit board (RF-FPCB) that transmits a radio frequency (RF) modulating signal to the directly modulated laser chip array. The arrayed waveguide grating chip includes an optical waveguides that transfer multi-channel optical signals and a wavelength multiplexer that multiplexes the multi-channel optical signals. The directly modulated laser transmitter and the arrayed waveguide grating chip are spaced apart from each other and are optically coupled in chip-to-chip.

Abstract: An on-chip polarizer for polarization filtering is described herein. The polarizer includes a rib waveguide on a supporting substrate, wherein the rib waveguide and the substrate may respectively comprise different materials. The rib waveguide may include a strip positioned over a slab of the same material. The strip may include a curvature along an optical propagation direction. In some embodiments, the curvature may include two bends that together form an approximately mirrored S-shaped curvature. The waveguide curvature may be configured to selectively guide an optical mode associated with a first polarization state while filtering-out another optical mode associated with a second polarization state. In some embodiments, the polarizer may allow propagation of a near lossless transverse magnetic (TM) mode while selectively radiating away a lossy transverse electric (TE) mode.

Abstract: The present disclosure relates to semiconductor structures and, more particularly, to spiral waveguide absorbers and methods of manufacture. The structure includes: a photonics component; and a waveguide absorber with a grating pattern coupled to a node of the photonics component.

Abstract: Apparatus and devices to monitor optical power within optical fibers in a substantially non-invasive fashion are disclosed. Optical monitors are comprised of low leakage junctions within very compact optical junctions which each confine the leakage within a very small local volume but also include photodiode means to ascertain signal amplitude. Multiplexing circuits for different groupings of lines enables automated monitoring of optical status across a communication network.

Abstract: One example optical splitter chip includes a substrate, where the substrate is configured with an input port, configured to receive first signal light, an uneven optical splitting unit, configured to split the first signal light into at least second signal light and third signal light, where optical power of the second signal light is different from optical power of the third signal light, a first output port, configured to output the second signal light, an even optical splitting unit group, including at least one even optical splitting unit, configured to split the third signal light into at least two channels of equal signal light, where optical power of the at least two channels of equal signal light is the same, and at least two second output ports, which are in a one-to-one correspondence with the at least two channels of equal signal light.

Abstract: Structures for an optical power splitter and methods of forming a structure for an optical power splitter. A splitter body defines a multimode interference region of the optical power splitter. A first side element positioned adjacent to a first side surface of the splitter body, and a second side element positioned adjacent to a second side surface of the splitter body.

Abstract: A light guide includes: a light guide main body that guides light input from an incident surface to an exit surface; and an attachment member that is connected to the light guide main body and includes an attachment portion that is to be fixed to another member, and the area of a connection surface between the attachment member and the light guide main body is smaller than the cross-sectional area of the attachment portion.