Abstract: Techniques are disclosed for the use of fused vector processor instructions by a vector processor architecture. Each fused vector processor instruction may include a set of fields associated with individual vector processing instructions. The vector processor architecture may implement local buffers facilitating a single vector processor instruction to be used to execute each of the individual vector processing instructions without re-accessing vector registers between each executed individual vector processing instruction. The vector processor architecture enables less communication across the interconnection network, thereby increasing interconnection network bandwidth and the speed of computations, and decreasing power usage.

Abstract: A rotatable plow shovel apparatus for clearing a path without having to lift includes a plow blade and a shaft housing having a curved front face coupled to a back side of the plow blade. A shaft aperture extends through a top side of the shaft housing to proximal a bottom side and the back face has a plurality of adjustment apertures extending through to the shaft aperture. A handle shaft has a vertical engagement portion rotatably engaged within the shaft aperture and an angled extension portion coupled to the engagement portion. A locking pin is coupled to the engagement portion and is selectively engageable with each of the plurality of adjustment apertures of the shaft housing to lock the handle shaft in a straight position, at least one alternative left tilt position, and at least one alternative right tilt position.

Abstract: A rotatable plow shovel apparatus for clearing a path without having to lift includes a plow blade and a shaft housing having a curved front face coupled to a back side of the plow blade. A shaft aperture extends through a top side of the shaft housing to proximal a bottom side and the back face has a plurality of adjustment apertures extending through to the shaft aperture. A handle shaft has a vertical engagement portion rotatably engaged within the shaft aperture and an angled extension portion coupled to the engagement portion. A locking pin is coupled to the engagement portion and is selectively engageable with each of the plurality of adjustment apertures of the shaft housing to lock the handle shaft in a straight position, at least one alternative left tilt position, and at least one alternative right tilt position.

Abstract: A multiple junction photovoltaic cell is optically coupled to the Fresnel lens with teeth. The set of teeth within a given ring of a ringed pattern of teeth on the Fresnel lens may have 1) varying surface angles of different teeth across the lens, 2) varying refractive indexes of the different teeth or 3) a combination of both. The differing surface angles or refractive indexes of different teeth within a given ring of a ringed pattern of teeth establish multiple focal lengths aimed at five or more different axial target focal points within an anticipated zone of operation relative to the multiple junction photovoltaic cell to create a window of averaged intensity of light defined by the five or more different axial target focal points.

Abstract: The invention relates to an asymmetric Mach Zehnder Interferometer (MZI) having a reduced drive voltage, coupled to a compact low-loss arrayed waveguide grating (AWG) to provide a broader passband with low ripple. The integrated device has a compact stackable design for improved manufacturing yield. Inputs and outputs of the device are disposed in alignment on opposite sides of a silicon chip with the MZI having an opposite curvature to the AWG. To achieve this alignment, waveguide arms of the MZI are crossed without coupling between them before the optical signal is combined and coupled into the AWG.

Abstract: The invention relates to high power semiconductor lasers based on a laser diode array waveguide grating (DAWG) in which the wavelength is stabilized using an array waveguide grating (AWG) in an external cavity configuration. Another aspect of the present invention relates to techniques for efficiently coupling optical gain element arrays to an AWG. Another feature provides for the efficient and brightness-conserving combination of multiple high power DAWG lasers into a single output.

Abstract: A flange and packaging assembly characterized by a structural lip configured to impart resistance to thermal-induced deformation (i.e. “stiffness”) to the flange during elevated temperature die attachment processes. The stiffness is achieved through appropriate configuration of the lip (height, width and shape) and is sufficient to at least partially counteract the stresses generated from coefficient of thermal expansion differentials between the flange and a die attached to it. The lip may be molded or otherwise formed with the flange as a unitary lip-stiffened flange, or may be a separate structure that is affixed to the flange. The flange has a lip-stiffened region for die attachment. This region may be raised above the first surface of the substrate base for enhanced stiffening, and may be in the form of a single pedestal supporting a single or multiple die, or may be a series of raised pedestals, each supporting one or more die.

Abstract: A method is provided for manufacturing a semiconductor device from a substrate (200) having an active surface (204) and a non-active surface (206). The method comprises depositing a backing material (104) onto the non-active surface of the substrate (206) in a pattern (500), the pattern (500) having at least a first die section (210), a second die section (212) adjacent the first die section (210), and a strip (216) connecting the first die section (210) and the second die section (212), removing material from portions of the non-active surface of the substrate (206) on which the backing material (104) is not deposited to thereby partially separate the substrate (200) into a first die (236) and a second die (238) connected to one another by the strip (254) of the deposited backing material, and breaking the strip connector (254) to separate the first die (236) from the second die (238).

Abstract: A method and apparatus for monitoring spectral tilt uses an arrayed waveguide grating (AWG) to separate a multiplexed optical signal having a plurality of wavelength channels into a plurality of sub-bands, where each sub-band spans a different wavelength range and includes more than one wavelength channel. A photodetector array is provided to measure the optical power in each of the sub-bands, while control electronics calculate spectral tilt of the multiplexed optical signal using the measured optical power in each of the sub-bands. The spectral tilt monitor in accordance with the instant invention provides spectral resolution, increased monitoring speeds, and decreased manufacturing costs.

Abstract: A planar lightwave circuit generalized for handling any given band of multiple bands of a wavelength range, including a first grating element handling a first group of bands; and a second grating element handling a second group of bands. The first and second groups of bands overlap in the wavelength range, and may be spaced apart by a fixed wavelength value. By providing two periodic grating elements handling alternating bands, their free spectral range is allowed to expand, improving their roll-off characteristics. By providing separate inputs for each band, wavelength accuracy can be improved. Device flexibility can be further improved by using switch and interleaver fabrics at the inputs and outputs. The resultant device, generalized to handle any given band within a wavelength range, eliminates the need for separate component design and inventory tracking otherwise necessary.

Abstract: A planar lightwave circuit includes at least one optical waveguide core, and at least one feature proximate the core having a stress-engineered property to balance stress and therefore minimize birefringence affecting the core. A protective passivation layer is formed over the core and the feature to be substantially non-interfering with the balanced stress provided by the feature. The stress balancing feature may be an overcladding layer formed over the core, doped to have a coefficient of thermal expansion approximately matched to that of an underlying substrate, to symmetrically distribute stress in an undercladding between the overcladding and the substrate, away from the core. The protective passivation layer is formed to have a coefficient of thermal expansion approximately matched to that of the overcladding. In one exemplary embodiment, the passivation layer is formed from silicon nitride. Related concepts of stress release grooves, and core overetching, are also disclosed.

Abstract: A process for the manufacture of a baleable lithium carboxylate polymer. The process includes polymerizing at least one conjudated diene in the presence of an organolithium initiator to a substantial completion. Thereafter, the polymerization process is terminated by the addition of carbon dioxide.

Abstract: A polarization compensated planar waveguide branch is disclosed having a planar optical trunk waveguide for transporting a linearly un-polarized optical signal having TE and TM modes. A planar optical branch waveguide, capable of supporting TE and TM modes is optically coupled to the trunk waveguide such that at least a portion of an optical signal propagating within the trunk waveguide will couple into the branch waveguide with an undesired imbalance, having stronger TM mode coupling than TE mode coupling for the at least the portion of the optical signal which couples into the branch waveguide from the trunk waveguide.

Abstract: A demultiplexer/multiplexer is disclosed wherein an arrayed waveguide grating having a reflector at an end includes selectable signal path blockers. The arrayed waveguide device has a common input/output port for launching radiation in the form of an input signal having n wavelengths therein and for receiving back via the reflector at the input/output port a selected channel of the input signal. In operation a multiplexed signal have n channels is launched therein and a selected channel is output for analysis or further processing.

Abstract: A template for a logic synthesis command script is broken into smaller and functionally independent templates termed “micro-templates.” Using micro-templates, logic synthesis time may be significantly reduced. Each micro-template may correspond to a particular synthesis operation and may be enabled or disabled. Where synthesis of a particular set of synthesis operations is desired, the micro-templates corresponding to those synthesis operations are enabled.

Abstract: A planar lightwave circuit includes an arrayed waveguide grating (AWG), with input and output waveguides, partially curved array waveguides with respective length differences, and planar waveguide regions for focusing optical energy between the input/output and array waveguides. Optimal waveguide widths and spacing along the planar waveguide region facets are disclosed, which are largely determinative of AWG size and optical performance. Also disclosed are optimal cross-sectional waveguide dimensions (e.g., width and height); modified index of refraction difference between the waveguide core and cladding regions; and optimal array waveguide lengths, path length differences, and free spectral range. These features, especially when combined with advanced fiber attachment, passivation and packaging techniques, result in high-yield, high-performance AWGs (both gaussian and flattop versions).

Abstract: A planar lightwave circuit generalized for handling any given band of multiple bands of a wavelength range, including a first grating element handling a first group of bands; and a second grating element handling a second group of bands. The first and second groups of bands overlap in the wavelength range, and may be spaced apart by a fixed wavelength value. By providing two periodic grating elements handling alternating bands, their free spectral range is allowed to expand, improving their roll-off characteristics. By providing separate inputs for each band, wavelength accuracy can be improved. Device flexibility can be further improved by using switch and interleaver fabrics at the inputs and outputs. The resultant device, generalized to handle any given band within a wavelength range, eliminates the need for separate component design and inventory tracking otherwise necessary.

Abstract: A planar lightwave circuit includes an arrayed waveguide grating (AWG), with input and output waveguides, partially curved array waveguides with respective length differences, and planar waveguide regions for focusing optical energy between the input/output and array waveguides. Optimal waveguide widths and spacing along the planar waveguide region facets are disclosed, which are largely determinative of AWG size and optical performance. Also disclosed are optimal cross-sectional waveguide dimensions (e.g., width and height); modified index of refraction difference between the waveguide core and cladding regions; and optimal array waveguide lengths, path length differences, and free spectral range. These features, especially when combined with advanced fiber attachment, passivation and packaging techniques, result in high-yield, high-performance AWGs (both gaussian and flattop versions).

Abstract: A planar lightwave circuit includes at least one optical waveguide core, and at least one feature proximate the core having a stress-engineered property to balance stress and therefore minimize birefringence affecting the core. A protective passivation layer is formed over the core and the feature to be substantially non-interfering with the balanced stress provided by the feature. The stress balancing feature may be an overcladding layer formed over the core, doped to have a coefficient of thermal expansion approximately matched to that of an underlying substrate, to symmetrically distribute stress in an undercladding between the overcladding and the substrate, away from the core. The protective passivation layer is formed to have a coefficient of thermal expansion approximately matched to that of the overcladding. In one exemplary embodiment, the passivation layer is formed from silicon nitride. Related concepts of stress release grooves, and core overetching, are also disclosed.

Abstract: A web-based tool is provided for unifying submission of reports and other communications between disciplines of an organization. The tool provides weekly reports, submissions by discipline and issue, and automatic report creation, with email notification to management team members. A flexible scheme allows deployment on multiple projects without significant changes in software, because of its parameterized design.