Abstract: A method and apparatus for measuring the pulse width of a narrow optical pulse, particularly in a multi-mode optical fiber. A spectrograph and streak camera are combined to record optical intensity data in a 2-dimensional array resolving both wavelength and temporal dependence of the optical pulse. The data is analyzed to calculate the chromatic dispersion and then to remove it. For example, the data in different wavelength windows are time shifted relative to each other by the amount of the chromatic dispersion so that all windows have approximately the same temporal dependence. The correction may numerically establish time offsets producing the maximum cross-correlation between wavelength windows. The corrected data may then be summed over optical wavelength, and the corrected time-dependent data is further analyzed to establish optical pulse width and impulse response of the fiber. Thereby, a laser diode with relatively large spectral width can characterize a high-bandwidth fiber.

Abstract: A score bar and a system and method for using the score bar to score a glass plate are described herein. Basically, the score bar includes a score wheel and a force sensor (e.g., one-axis force sensor, three-axis force sensor) that enables the measurement of force data between the score wheel and a glass plate while the score wheel is being drawn across the glass plate. A computer collects the measured force data and then analyzes the collected force data to identify and predict when there is a problem with the scoring of the glass plate. For instance, the computer can analyze the collected force data and identify a problem associated with the application of the score bar to the glass plate which could help prevent the unnecessary breakage or chipping of glass plates.

Abstract: A fiber management frame and an interconnection closure including the fiber management frame are provided for securely retaining optical fiber connection trays once the closure is placed into service, while also permitting access to any of the trays to reconfigure the connections of the optical fibers without disturbing the remaining trays. The fiber management frame includes a support for holding at least one such tray selected from the group consisting of a splice tray, a coupler tray, and a connector panel. The fiber management frame may also include a bias member, such as one or more tension members, for urging each tray toward the support. As such, the bias member releasably secures each tray to the support. The fiber management frame may also include at least one adjustable member, such as an upstanding bracket, that cooperates with the support to define a space for housing at least one tray.

Abstract: A modulator formed with a solid state electro-optic material having a pixellated structure interconnected to a circuit on a semiconductor substrate. Silicon CMOS integrated circuit that can include random access memories (RAMs) are used as a substrate and interfaced to solid state electro-optic materials coated thereon. In particular, the electro-optic modulators are controlled by RAM cells to produce a modulation of reflected light. SRAMs can be used with connection to the SRAM cell flip-flop. DRAMs can be used with the modulator replacing the DRAM storage capacitor. The SLM thus formed can be connected to a digital computer and controlled as if were a being written to as a memory, but other IC structures can also be used. In order to enhance the modulation effects, the electro-optic material is used as the spacer for a Fabry-Perot etalon structure that is also deposited on the semiconductor substrate. PLZT is a suitable electro-optic material.

Abstract: A host material for Tm3+-doping is provided. The host material is a fluorophosphate glass having a non-zero concentration of Tm3+, cation elements that include at least an alkaline earth, phosphorus, and aluminum, and anion elements that include oxygen (O) and fluorine (F). The fluorine(F)/oxygen (O) ratio (F/(F+O)) for the fluorophosphate glass of the embodiments of the present invention can be in the range of about 0.5 to about 0.85. The fluorophosphate glass further can have an alkali metal concentration of 10 mole % or less to improve durability. The Tm-doped fluorophosphate glass can be incorporated into an amplifier or laser utilized in the 14xx nm wavelength region.

Abstract: A composition comprises the product obtained by homogeneously blending: (A) 100 parts by weight of a polyorganosiloxane containing at least two alkenyl radicals per molecule, (B) an organohydrogensiloxane containing at least two silicon-bonded hydrogen atoms per molecule in a quantity sufficient to provide from 0.5 to 3 silicon-bonded hydrogen atoms per alkenyl radical of (A), (C) from 50-2000 parts by weight of silver particles pre-treated with an organosilicon compound selected from the group consisting of (i) alkoxy group(s)-containing silanes and (ii) organosiloxanes, (D) a platinum catalyst, (E) up to 20 weight percent based on the weight of (A) of an organosilicon compound containing at least one silicon-bonded alkoxy group per molecule, and (F) from 0.001 to 5 parts by weight per 100 parts by weight of (A) of a cure inhibitor.

Abstract: Crack-free alumina honeycombs are made by comminuting anhydrous aluminum oxide powder, blending and mulling the powder with an aluminum oxide or aluminum hydroxide permanent binder, a polymeric aluminum salt, a temporary binder, an aqueous acidic peptizing agent, and water, and thereafter homogenizing, extruding, drying and firing the extrudate to form the crack-free honeycomb.

Abstract: A method of writing a light guiding structure in a bulk glass substrate including selecting a bulk glass substrate made from a soft silica-based material; and focusing an excimer laser beam at a focus within said substrate while translating the focus relative to the substrate along a scan path at a scan speed effective to induce an increase in the refractive index of the material along the scan path relative to that of the unexposed material while incurring substantially no laser induced breakdown of the material along the scan path. Various optical devices, including waveguides can be made in this way.

Abstract: This invention relates to a device for performing plasma chemical vapor deposition (PCVD) for producing coated glass tubes for the drawing of optical fibers. This invention further relates to a device that uses a microwave applicator, and the applicator itself with a profile that allows for a uniform coating across a greater length of the glass tube.

Abstract: The present invention provides an optical fiber, comprising a core having an alpha parameter in the range of approximately 2 to approximately 8, a maximum index percent difference between the core and a cladding in the range of approximately 0.3% to approximately 0.5% and a core diameter in the range of approximately 6.0 to approximately 16.0 &mgr;m and a cladding. The optical fiber has a bandwidth of at least approximately 0.6 GHz.km at 850 nm, and is configured for multimode operation at a wavelength less than 1300 nm and single mode operation at a wavelength of at least approximately 1300 nm. The fiber also has significantly reduced intermodal noise. The present invention also includes a method of designing such a fiber, a fiber optic system provided such a fiber and a method of operating a fiber optic system with such a fiber.

Abstract: The present invention relates to a process and a device for growing single crystals, especially of CaF2. Within the framework of said process, a stack of crucibles (100, 101, . . . , 106, . . . ) containing the starting material is successively moved translationally through a melting chamber (C1) and an annealing chamber (C2), said movement being continuous, smooth and without interruption. The present invention provides for the preparation of fluoride, single crystals, particularly optical fluoride single crystals and optical UV &lgr;<248 nm lithography element blanks, most preferably CaF2.

Abstract: A method for creating adhesion includes plasma treating two substrates and thereafter contacting the substrates. The method can be used on a variety of dry surfaces. The method is used to adhere nonadhesive surfaces such as a cured silicone with a ceramic or semiconductor.

Abstract: A network interface device includes an enclosure that houses active electronics for accommodating twisted-pair telephone wires and coaxial cable. The housing has a base that connects to a building wall. A shield locates within the housing, the shield having a platform and a perimeter wall that extends around the platform. A printed circuit board mounts within the shield between the base and the platform. The shield is hinged to the base so that it may be readily removed with the printed circuit board if repair is needed. A subscriber bridge module mounts on the platform. The subscriber bridge module has subscriber line termination points on one side that electrically connect with the subscriber lines. The subscriber bridge module also has telephone jacks electrically connected between the subscriber termination points and the provider line. This provides a demarcation between the subscriber lines and the provider line.

Abstract: The invention describes an optical waveguide and a fiberoptic isolator wherein the optical waveguide rotating the plane of polarization of coupled light consists of a fiber core (11) exhibiting the Faraday effect, a fiber cladding (3) and a coating (5) concentrically surrounding the YIG-doped fiber core (11) and generating a permanent magnetic field. The outer coating (5) is manufactured from a material that is magnetizable or has magnetic properties, and the outer coating (5) is subdivided into two half-shells whose magnetic orientations are mutually opposed.

Abstract: A funnel for a cathode ray tube includes a body portion having an opened end connected to a panel and an alignment mark formed on an outer surface of the body portion in the vicinity of the opened end, a neck portion for housing an electron gun, a yoke portion around which a deflection yoke is mounted, the yoke portion having a first end connected to the body portion at a top-of-round (TOR) and a second end connected to the neck portion. A convex portion having a thickness greater than 1 mm is provided on an outer portion of the body portion and/or yoke portion from the vicinity of the end of the alignment mark to the vicinity of the TOR in a direction of a tube axis.

Abstract: One aspect of the invention is a package for an optical component having at least one optical waveguide fiber extending therefrom. The package includes a base and a component holder removably engageable with the base. The component holder includes a receptacle configured to receive the optical component and the component holder is rotatable with respect to the base.

Abstract: The present invention teaches a composition which provides gas, flavor, and aroma barrier to substrates, where the composition is formed by mixing an ethylenically unsaturated acid and a polyamine, wherein said polyamine optionally has a crosslinker reacted therein, and wherein said polyamine has four or more A, B, or C units, where: A is an —R2—N(R1)2 unit, B is an —R1—N(R2—)2 unit, and C is an (—R2)3N— unit, where: R1 is independently selected from hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl, and alkylaryl, and R2 is independently selected from the group consisting of: linear or branched alkylene groups or substituted alkylene groups having from 1 to 18 carbon atoms, and arylene groups or substituted arylene groups having from 6 to 18 carbon atoms. The composition is coated on a substrate then optionally treated to initiate a free radical reaction.

Abstract: An avalanche photodiode (APD) includes an absorption layer above the multiplication layer, where the thickness of the multiplication layer is defined through a growth process. The APD can also have a third-terminal, or peripheral ring terminal, for collecting charge carriers generated outside the optically-active region of the device. Undesirable dark current can thus be better managed during the life of the device. The three-terminal design may also be utilized in other photodetectors, including PIN diodes.

Abstract: A method for reclaiming fiberglass and a resinous residue from resinous fiberglass product. The method comprises first introducing the resinous fiberglass product to a single chamber or multi-chamber washer/extractor machine. An aqueous acid solution is then used to remove the resinous residue from the resinous fiberglass product. The fiberglass portion is then rinsed, dewatered, and stored for later use. At the same time, the resinous residue is recovered by precipitating the resinous residue out of the acid solution bath and separating it using a clarifier. The fiberglass portion is then available for reuse in the glass industry and other end use applications and the resinous residue may then be available for use in many other industries, including the fertilizer industry. In an alternative embodiment, a sizing composition may also be applied to the fiberglass portion prior to the dewatering step to form a sized fiberglass material.

Abstract: Disclosed is an optical waveguide fiber preform and an optical waveguide fiber drawn therefrom, in which the density and thus the effective refractive index of the clad layer is caused to change in a pre-selected way axially along the waveguide preform and the associated waveguide fiber. The axial change in density of the clad layer is due to the fraction of the clad volume that is air or a glass of a composition different from that of the base clad glass. The axially variation in clad index changes the signal mode power distribution, thereby changing key waveguide fiber parameters such as magnitude and sign of dispersion, cut off wavelength and zero dispersion wavelength. The invention includes methods of making the structures having an axially varying clad layer. The invention relates to preforms and associated waveguide fibers which guide light due to difference in refractive index between core and clad.