Abstract: Embodiments herein include an optical system, an optical component, and an associated method of passive alignment in which complementary magnetic patterns are used to provide passive alignment between optical elements. The magnetic coupling between the magnetic patterns operates to align optical elements in at least two dimensions. The magnetic coupling provides a temporary holding force on the optical elements until the optical elements are secured using epoxy or other adhesive.

Abstract: The present invention relates to telecommunication techniques and integrated circuit (IC) devices. More specifically, embodiments of the present invention provide an off-quadrature modulation system. Once an off-quadrature modulation position is determined, a ratio between DC power transfer amplitude and dither tone amplitude for a modulator is as a control loop target to stabilize off-quadrature modulation. DC power transfer amplitude is obtained by measuring and sampling the output of an optical modulator. Dither tone amplitude is obtained by measuring and sampling the modulator output and performing calculation using the optical modulator output values and corresponding dither tone values. There are other embodiments as well.

Abstract: An electro-optical modulator is provided. The electro-optical modulator comprises at least one optical waveguide, an electrode arrangement for applying a voltage across the optical waveguide. The electrode arrangement comprises a first and a second electrical line and at least two terminating resistors terminating the first and the second electrical line. The electrode arrangement comprises at least one capacitive structure that capacitively couples, but galvanically separates the two terminating resistors. The capacitive structure comprises at least two electrically conductive layers physically arranged at a position between the first and the second electrical line, wherein the at least two layers are separated by at least one dielectric layer.

Abstract: An optical delivery waveguide for a material laser processing system includes a small lens at an output end of the delivery waveguide, transforming laser beam divergence inside the waveguide into a spot size after the lens. By varying the input convergence angle and/or launch angle of the laser beam launched into the waveguide, the output spot size can be continuously varied, thus enabling a continuous and real-time laser spot size adjustment on the workpiece, without having to replace the delivery waveguide or a process head. A divergence of the laser beam can also be adjusted dynamically and in concert with the spot size.

Abstract: Staggered Splices. At least some illustrative embodiments are apparatus including a tube having a wall defining an interior volume, first and second optical fibers disposed within the interior volume and the first and second optical fibers joined at a first splice. Also included are third and fourth optical fibers disposed within the interior volume, the third and fourth optical fibers joined at a second splice. The first splice and the second splice have an axially spaced-apart relationship within the interior volume of the tube.

Abstract: Embodiments of present invention provide a digital dispersion compensation module. The digital dispersion compensation module includes a multi-port optical circulator; and a plurality of dispersion compensation units connected to the multi-port optical circulator, wherein at least one of the plurality of dispersion compensation units includes a fiber-bragg grating (FBG) having a first port and a second port; and an optical switch being capable of selectively connecting to one of the first port and the second port of the FBG, wherein the at least one of the plurality of dispersion compensation units is adapted to provide a positive dispersion to an optical signal, from the multi-port optical circulator, when the optical switch connects to the first port of the FBG and is adapted to provide a negative dispersion to the optical signal when the optical switch connects to the second port of the FBG.

Abstract: A high resolution, wide spectral range, optical apparatus that includes an optical resonator cavity and a wavelength demultiplexer, arrangeable in multiple configurations. A method for increasing the resolution of a wavelength demultiplexer involves inputting light into an optical resonant cavity; inputting a plurality of different resonant output wavelengths to a wavelength demultiplexer; and routing each different resonant wavelength to a different output waveguide of the demultiplexer to generate a demultiplexer output spectrum. The method further involves performing either a time serialization or a space serialization procedure to increase the channel density and fully cover the spectrum of interest.

Abstract: An optical fiber having a reduced attenuation includes a silica glass core and a silica glass cladding. The silica glass core has substantially no germanium and includes a first core and a second core. The second core encloses the first core, the refractive index of the second core is larger than the refractive index of the first core, and the average value of halogen concentration of the second core is 5000 ppm or more. The silica glass cladding surrounds the second core and contains substantially no germanium. The refractive index of the cladding is smaller than the refractive index of the first core.

Abstract: A hybrid chassis for fiber management includes a fixed tray adapted to mount to one of a rack and a frame; a sliding chassis assembly housed in the fixed tray; fiber connectors on a front faceplate of the sliding chassis assembly; internal cross connections in the sliding chassis assembly between the fiber connectors; and a sliding mechanism between the sliding chassis assembly and the fixed tray providing constrained sliding of the sliding chassis assembly between at least two positions including an operating, recessed position and a maintenance, fiber access position. In the operating, recessed position, the sliding chassis assembly can be recessed by about 3.3? in the fixed tray, wherein, in the maintenance, fiber access position, the sliding chassis assembly can be recessed by about 1.3? for fiber access, and wherein the constrained sliding can be about 2?.

Abstract: An integrated circuit optical backplane die and associated semiconductor fabrication process are described for forming optical backplane mirror structures for perpendicularly deflecting optical signals out of the plane of the optical backplane die by selectively etching an optical waveguide semiconductor layer (103) on an optical backplane die wafer using an orientation-dependent anisotropic wet etch process to form a first recess opening (107) with angled semiconductor sidewall surfaces (106) on the optical waveguide semiconductor layer, where the angled semiconductor sidewall surfaces (106) are processed to form an optical backplane mirror (116) for perpendicularly deflecting optical signals to and from a lateral plane of the optical waveguide semiconductor layer.

Abstract: Provided is a phase error compensating apparatus. The phase error compensating apparatus may include a waveguide array disposed between a first free propagation region and a second free propagation region and configured to allow a light signal passed through the first free propagation region to move toward the second free propagation region, in which a length of each of the waveguides included in the waveguide array may be adjusted to compensate for a phase error of light signals passed through the waveguides.

Abstract: A semiconductor device includes a first chip, a dielectric layer over the first chip, and a second chip over the dielectric layer. A conductive layer is embedded in the dielectric layer and is electrically coupled to the first chip and the second chip. The second chip includes an optical component. The first chip and the second chip are arranged on opposite sides of the dielectric layer in a thickness direction of the dielectric layer.

Abstract: A cooling assembly for an electronic image assembly having an open and closed gaseous loop. A closed gaseous loop allows circulating gas to travel across the front surface of an image assembly and through a heat exchanger. An open loop allows ambient gas to pass through the heat exchanger and extract heat from the circulating gas. An optional additional open loop may be used to cool the back portion of the image assembly (optionally a backlight). Ribs may be placed within the optional additional open loop to facilitate the heat transfer to the ambient gas. The cooling assembly can be used with any type of electronic assembly for producing an image.

Abstract: An optical device comprising a single-photon device, which is coupled to a planar waveguide is described. The planar waveguide comprises a nanostructured section, which includes a longitudinal extending guiding region with a first side and a second side, a first nanostructure arranged on the first side of the guiding region, and a second nanostructure arranged on the second side of the guiding region. The nanostructured section comprises a slow-mode section, in which the single-photon device is positioned or embedded, and in which the first nanostructure and second nanostructure suppress spontaneous emission into other modes. The planar waveguide further comprises a fiber coupler for coupling light out of the planar waveguide and into an optical fiber, the fiber coupler preferably being adapted to match a field profile of an optical fiber.

Abstract: An optimized SOI 2×2 multimode interference (MMI) coupler is designed by use of the particle swarm optimization (PSO) algorithm. Finite Difference Time Domain (FDTD) simulation shows that, within a footprint of 9.4×1.6 ?m2, <0.1 dB power unbalance and <1 degree phase error are achieved across the entire C-band. The excess loss of the device is <0.2 dB.

Abstract: Exemplary embodiments provide an electronic display assembly. One or more heat-generating components are preferably placed in thermal communication with a plate. One or more fans are placed to draw cooling air along the plate to remove the heat removed from the component. Some embodiments may place the plate behind the electronic image assembly, so that cooling air can remove heat from the plate as well as the electronic image assembly. Exemplary embodiments have power modules in thermal communication with optional conductive ribs. Conductive thermal communication is established between the optional ribs and the components in the exemplary embodiments.

Abstract: An network interface device (NID) cabinet has removably mounted or fixedly mounted cable spools. The NID cabinet is a small enclosure, typically made of plastic, which sits on the outside wall of an end user's building, such as a home or office. Pre-terminated cables are spooled around each cable spool, and the cable connector at one end of each cable is connected to a network interconnection junction within the NID cabinet. A series of interlocking mounting features are formed on both the cable spool and the mating NID cabinet back wall. Two different types of mounting features enable the cable spool to be removably or fixedly mounted within the NID cabinet. When fixedly mounted, the cable spool can still be removed from the NID cabinet, but only if the spooled cabled is completed un-spooled and removed from the cable spool.

Abstract: It is proposed a home optical data network formed of an optical fiber comprising an optical core and an optical cladding surrounding the optical core, the optical core having a refractive graded-index profile with a minimal refractive index n1 and a maximal refractive index n0, said optical fiber being such that it has a numerical aperture NA and an optical core radius a satisfying a criterion C of quality of optical communications defined by the following equation: C = NA - 0.02 × a where ? : NA = n 0 2 - n 1 2 = n 0 · 2 ? ? ? ? with ? ? ? = n 0 2 - n 1 2 2 ? n 0 2 , ? is the normalized refractive index difference, and in that said minimal and maximal refractive indexes n1, n0 and said optical core radius a are chosen such that NA>0.20, a>10 ?m and |C|<0.20.

Abstract: A high density, low power, high performance information system, method and apparatus are described in which an integrated circuit apparatus includes a first integrated circuit link element (657) and a redundant integrated circuit link element (660) connected in parallel between first and second deflectable MEMS switches (652-655, 662-665) which are connected in a signal path and controlled to deselect the first integrated circuit link element (657) and connect the redundant integrated circuit link element (660) in the signal path in response to a two-state control signal provided to the first and second deflectable MEMs switches which identifies the first integrated circuit link element as being defective.

Abstract: The various presented herein relate to an on-chip polarization beam splitter (PBS), which is adiabatic for the transverse magnetic (TM) mode and diabatic for the transverse electric (TE) mode. The PBS comprises a through waveguide and a cross waveguide, wherein an electromagnetic beam comprising TE mode and TM mode components is applied to an input port of the through waveguide. The PBS can be utilized to separate the TE mode component from the TM mode component, wherein the TE mode component exits the PBS via an output port of the through waveguide, and the TM mode component exits the PBS via an output port of the cross waveguide. The PBS has a structure that is tolerant to manufacturing variations and exhibits high polarization extinction ratios over a wide bandwidth.