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: 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: 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 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: 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: 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: 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.

Abstract: MEMS-actuated optical switches can be implemented on photonic chips. These switches are compact, essentially planar, simple to implement and include only one moving MEMS component per switch. The switches exhibit low optical loss, require low power to operate, and are simple to control and easy to integrate with other optical devices. Each switch has two optical waveguides that are optically coupled in an ON switch state and not coupled in an OFF switch state. An end or a medial section of one of the two waveguides may translate between the ON and OFF states to affect the coupling. Alternatively, a coupling frustrator may translate between the ON and OFF states to affect the coupling.

Abstract: A semiconductor detector (100) for electromagnetic radiation within a wavelength range is disclosed, comprising a first waveguide portion (110), a funnel element (130) configured to funnel incident electromagnetic radiation into a first end (112) of the first waveguide portion, and a second waveguide portion (120) extending in parallel with the first waveguide portion. The second waveguide portion is coupled to the first waveguide portion and configured to out-couple electromagnetic radiation from the first waveguide portion, within a sub-range of the wavelength range. Further, a photodetector (140) including a photoactive layer (144) is arranged at a second end (114) of the first waveguide portion and at an end (124) of the second waveguide portion, and configured to separately detect electromagnetic radiation transmitted through and exiting the first waveguide portion and the second waveguide portion.

Abstract: An optical system includes a laser source that provides a beam of light, a photonic integrated circuit (PIC) with an input aperture, and an alignment fixture that has at least one actuator. The alignment fixture may be mounted on the PIC. The optical system is aligned such that the beam of light travels from the laser source to the alignment fixture and from the alignment fixture to the input aperture of the PIC. The alignment fixture can move in at least one direction upon actuation of the at least one actuator to adjust coupling between the laser source and the PIC. The at least one actuator may be a micro-electro-mechanical system (MEMS) structure actuated by an electrical signal.

Abstract: A wave conductor for electromagnetic waves, waveguide connector and communications link A wave conductor for electromagnetic waves, preferably a millimeter-wave wave conductor, in particular for a digital communication application, with a conductor core and a one conductor sheathing. The conductor sheathing surrounds the conductor core at least partially in the longitudinal direction and at least partially in the circumferential direction of the wave conductor. One longitudinal section of the wave conductor has cross-sections which deviate from a circle at the outside of the wave conductor and/or at the outside of the conductor sheathing. Further, a waveguide connector for electromagnetic waves, preferably millimeter-wave waveguide connectors, in particular flying or installable waveguide connectors for a wave conductor. The waveguide connector has a wave conductor plug-in recess in which a longitudinal section of the wave conductor is directly placeable.

Abstract: A retention assembly for coupling a cable including a plurality of optical fibers to a support may include a retention anchor configured to be coupled to a support and a retention coupler configured to be coupled to a cable. The retention anchor may include a mounting plate configured to be coupled to a support and defining an entry hole extending through the mounting plate and an engagement slot extending from a periphery of the entry hole. The retention coupler may include a retention support and a retainer blade coupled to a first coupler face of the retention support via an extension. The retainer blade may be configured to be passed through the entry hole, such that the extension extends through the entry hole of the mounting plate, and the extension slides within the engagement slot of the mounting plate.

Abstract: A two-fiber Quad Small Form-factor Pluggable electro-optical transceiver (QSFP) currently connects to two optical fibers, one for transmission and one for reception. In accordance with an embodiment of the disclosure, a three-port optical circulator may be employed in order to achieve bidirectional transmission (BiDi) on a single fiber. The disclosure provides in accordance with an embodiment of the disclosure a miniature optical circulator that clips onto the two-fiber QSFP without protruding from the QSFP extraction lever, and is configured to mate with the two QSFP fiber connectors on one side and a single optical fiber on the other. Another embodiment provides an integrated bidirectional QSFP that is configured to mate with a single bidirectional fiber.

Abstract: An example system for multi-wavelength optical signal splitting is disclosed. The example disclosed herein comprises a first splitter, a second splitter, and a modulator. The system receives a multi-wavelength optical signal and an electrical signal, wherein the multi-wavelength optical signal comprises a plurality of optical wavelengths and has a power level. The first splitter is to split the plurality of optical wavelengths into a plurality of optical wavelength groups. The second splitter is to split the multi-wavelength optical signal or the plurality of optical wavelength groups into a plurality of lower power signal groups. The modulator is to encode the electrical signal into the plurality of optical wavelength groups, the plurality of lower power signal groups, or a combination thereof.

Abstract: Two input waveguides are made of a semiconductor material. One output waveguide is made of a semiconductor material. A multi-mode-interference part is made of a semiconductor material. The multi-mode-interference part has an incoming end surface connected to the input waveguides, and an outgoing end surface opposite to the incoming end surface and connected to the output waveguide. The multi-mode-interference part has a waveguide width wider than the waveguide widths of the input waveguides and the waveguide width of the output waveguide. Two unwanted-light waveguides are made of a semiconductor material. The unwanted-light waveguides are connected to the outgoing end surface of the multi-mode-interference part so as to sandwich the output waveguide. The unwanted-light waveguides each satisfy a single-mode condition.

Abstract: An array substrate and a magneto-optical switch display. The array substrate includes: a thin film transistor T, a coil connected with the thin film transistor, and a magneto-optic crystal interposed in the coil, the coil and the magneto-optic crystal constituting a magneto-optical switch structure, and the magneto-optical switch structure can change a transmission rate of emergent light transmitting through the array substrate.

Abstract: An electro-optical link is provided. In an example embodiment, the electro-optical link includes a number of vertical cavity surface emitting lasers (VCSELs); one or more drivers that operate the VCSELs such that each of the VCSELs selectively emits an optical signal; one or more multiplexers that multiplex a number of optical signals into an optical fiber, each optical signal emitted by one of the VCSELs; and one or more optical fibers. At least two optical signals are multiplexed into each optical fiber of the one or more optical fibers. In some example configurations eight or sixteen optical signals are multiplexed into one optical fiber.

Abstract: An optical signal transmission system comprising a multimode optical fiber link. The multimode optical fiber link is for transmission of a plurality of optical signals in a plurality of spatial modes supported by the multimode optical fiber link. The optical signal transmission system comprises a photonic device in the form of a spatial mode add drop multiplexer coupled to the multimode optical fiber link and configured for at least one of coupling into the multimode optical fiber link an optical signal of the plurality of optical signals into a spatial mode of the plurality of spatial modes and coupling out of the multimode optical fiber link and into an optical fiber the optical signal of the spatial mode.

Abstract: Consistent with the present disclosure, an apparatus for producing a control signal for a laser source is provided, comprising an etalon configured to receive light from the laser source and control circuitry that provides the control signal, wherein the control signal is indicative of a comparison of (a) a difference between a forward transmission signal of the etalon and a backward reflection signal of the etalon and (b) the light received by the etalon from the laser source. Alternatively, the control signal is indicative of a comparison of (a) a difference between a forward transmission signal of the etalon and a backward reflection signal of the etalon and (b) a combination of the forward transmission signal of the etalon and the backward reflection signal of the etalon.

Abstract: A sensor line, a measuring arrangement and a method detect a change in an ambient variable. The sensor line serves for detecting a change in an ambient variable, in particular the temperature. The sensor line has a first optical waveguide, a second optical waveguide and also a material that changes its transparency depending on the value of the ambient variable. The material is positioned between the first optical waveguide and the second optical waveguide in such a way that light from the first optical waveguide is able to be coupled into the second optical waveguide in an event of a change in the transparency.

Abstract: An optoelectronic system comprising a first member and a second member, said first member and said second member comprising a plurality of layers, wherein each member has a profiled mating surface, the first member being connected to the second member such that the growth direction of the layers of the first member are orthogonal to the growth direction of the layers of the second member and the profiled mating surfaces fit together, the first member comprises a waveguide circuit comprising a waveguide and the second member comprises an optoelectronic device with its own optical output which is connected to the waveguide of the first member, the first and second members also being electrically connected.

Abstract: An illumination device and method including multiple illumination sources such as LEDs, lasing diodes or the like operatively connected to a multi-branch light guide adapted to collect and co-align beams from the illumination sources for delivery of high intensity, spatially uniform illumination.

Abstract: An optical fiber cord includes: a multi-fiber cord section that includes an outer cover that encloses an optical fiber unit where a plurality of coated optical fibers are gathered; a plurality of branch cord sections where the coated optical fibers are housed in branch tubes; and a branch protection section that includes an exterior member that covers a branch portion where the plurality of coated optical fibers are branched from the multi-fiber cord section toward the branch cord sections.

Abstract: Disclosed is an optical gas sensor. The optical gas sensor includes: a light source which emits light; a gas collector which includes a cavity to be filled with gas to be sensed; an optical wave guider which guides light emitted from the light source to be output to the cavity, and guides the output light to be output again to the cavity after passing through the cavity of the gas collector; and an optical detector which detects light output from the optical wave guider. Thus, a path of light exposed to the gas to be sensed is increased within the cavity, thereby achieving miniaturization and sensing gas of low-concentration.

Abstract: Disclosed is an optical semiconductor device which can be improved in light shift precision and restrained from undergoing a loss in light transmission. In this device, an inner side-surface of a first optical coupling portion of an optical coupling region and an inner side-surface of a second optical coupling portion of the region are increased in line edge roughness. This manner makes light coupling ease from a first to second optical waveguide. By contrast, the following are decreased in line edge roughness: an outer side-surface of the first optical coupling portion of the optical coupling region; an outer side-surface of the second optical coupling portion of the region; two opposed side-surfaces of a portion of the first optical waveguide, the portion being any portion other than the region; and two opposed side-surfaces of a portion of the second optical waveguide, the portion being any portion other than the region.

Abstract: In photonic integrated circuits implemented in silicon-on-insulator substrates, non-conductive channels formed, in accordance with various embodiments, in the silicon device layer and/or the silicon handle of the substrate in regions underneath radio-frequency transmission lines of photonic devices can provide breaks in parasitic conductive layers of the substrate, thereby reducing radio-frequency substrate losses.

Abstract: An information processing system, device and method wherein a base board is configured to couple to both back and midplane systems as well as optical modules for use in a data center rack system. Specifically, a base board adapter is configured to electrically couple to an integrated backplane/midplane electronic interface of the base board and translate the signals to one or more optical interface module connectors such that one or more optical interface modules are able to be coupled to the base board.

Abstract: An optical module includes an optical element having a group of first pads which is formed on a first surface thereof, a substrate having a group of second pads which is formed on a second surface thereof facing the first surface so as to correspond to the group of first pads, respectively, and a group of solders that respectively bonds the group of first pads and the group of second pads to each other, wherein, in a plan view, the corresponding first and second pads partially overlap each other, and a center of gravity of the group of first pads coincides with a center of gravity of the group of second pads.

Abstract: Aspects of the subject disclosure may include, receiving a signal, and launching, according to the signal, an electromagnetic wave along a transmission medium, where the electromagnetic wave propagates along the transmission medium without requiring an electrical return path, and where the electromagnetic wave has a phase delay profile that is dependent on an azimuth angle about an axis of the transmission medium. Other embodiments are disclosed.

Abstract: An optical module for connecting photoelectric conversion device on a substrate to a ferrule connected to an optical fiber includes a body configured to be mounted on the substrate, a first lens disposed on the body at a side thereof connectable to the ferrule, a second lens disposed on the body at a side thereof facing the substrate, and a core disposed in the body between the first lens and the second lens, wherein a refractive index of the core is higher than a refractive index of the body.

Abstract: A light device using a light cylinder is disclosed. The light device includes a cover, a light source section combined with at least part of an inside surface of the cover and configured to output a light, and a light cylinder configured to include one entrance part and a plurality of output parts. The entrance part is combined with the light source section, and the light incident through the entrance part is outputted through the output parts.

Abstract: To effectively prevent the acceleration of the drift phenomenon generated by the application of a high electric field to a substrate through a bias electrode in a waveguide type optical element. A waveguide type optical element includes a substrate (100) having an electro-optic effect, two optical waveguides (104 and 106) disposed on a surface of the substrate, a non-conductive layer (120) which is disposed on the substrate and is made of a material having a lower dielectric constant than the substrate, and a control electrode (150) which is disposed on the non-conductive layer and is intended to generate a refractive index difference between the two optical waveguides by respectively applying electric fields to the two optical waveguides, and the non-conductive layer is constituted of a material which includes silicon oxide, an oxide of indium, and an oxide of titanium and has a ratio between a molar concentration of the titanium oxide and a molar concentration of indium oxide of 1.

Abstract: In an optical modulator, a light-receiving element, and an output port are disposed in a substrate. In addition, at least a part of an electrical line, which electrically connects the light-receiving element and the output port to each other, is formed in the substrate. In addition, a plurality of the optical modulation sections are provided. In addition, among a plurality of the light-receiving elements which are provided to the optical modulation sections, at least one light-receiving element is disposed at a position different from positions of the other light-receiving elements in a light wave propagating direction. A plurality of the output ports are disposed in an arrangement in the light wave propagating direction in correspondence with an arrangement of the plurality of the light-receiving elements in the light wave propagating direction.

Abstract: Systems, methods, and apparatus for an optical sub-assembly (OSA) are disclosed. In one or more embodiments, the disclosed apparatus involves a package body, and a lock nut, where a first end of the lock nut inserted into a first cavity of the package body. The apparatus further involves a transistor outline (TO) can, where a first end of the TO can is inserted into a second cavity of the package body. Also, the apparatus involves an optical fiber, where a portion of the jacket from an end of the optical fiber is stripped off, thereby exposing bare optical fiber at the end of the optical fiber. The end of the optical fiber is inserted into a second end of the lock nut such that the bare optical fiber passes into the package body and at least a portion of the bare optical fiber is inserted into the TO can cavity.