Reliability Considerations for Fiber Optic Connections

  • Mettler S.

The term reliability, as applied to optical fiber splices and connectors, usually means the long term stability of the optical connection over long time periods under varying environmental conditions. Reliability requirements for splices and connectors range from stringent (long term dependability under severe conditions), to lenient (temporary connections in air ...

Nonequilibrium Phonon Dynamics in a Semiconductor Quantum Well

  • Cai W.
  • Lax M.
  • Marchetti M.

The dynamics of nonequilibrium phonons in heterolayers, where the carriers are quasi-two-dimensional (2D) while the equilibrium lattice excitations are those of the bulk (3D), require a new theoretical approach. We have derived a kinetic equation for the phonon one-body density matrix, and then transform it to a tractable set of ...

Implementations of Neural Network Models in Silicon

  • Graf H.
  • Mackie S.
  • Schwartz D.

The tasks of speech recognition, stereo vision, optical character recognition, video compression by vector quantization and many others are characterized by a desire to find the best match to an input data string in a large library of previously stored reference strings. In real applications the list may be of ...

A Dual-Based Algorithm for Multiproduct Uncapacitated Facility Location

  • Klincewicz J.
  • Luss H.

The multiproduct uncapacitated facility location problem (MUFLP) is a generalization of the classic uncapacitated facility problem (UFLP). In MUFLP, different products are required by the customers. In addition to the fixed cost for opening a facility, there is an added fixed cost for handling a particular product. Assignment costs are ...

Organic Materials for Nonlinear Optics

  • Katz H.

We present results of studies of oriental order of Langmuir- Boldgett monolayer and multilayer films based on second harmonic generation and linear absorption measurements. New compounds with large second order molecular susceptibilities have been synthesized and transferred as monolayers from the air-water interface to solid supports using the Langmuir-Boldgett technique. ...

Pictures of Karmarkar's Linear Programming Algorithm

  • Gay D.

Karmarkar's linear programming algorithm handles inequality constraints by changing variables to make all constraints about equally distant; it moves in the steepest-descent direction seen by the new variables. This paper summarizes four variants of Karmarkar's linear programming algorithm (primal affine, primal projective, dual affine, and dual projective), discusses depicting polytopes ...

Disordering at Ge(111) Surface Near the Bulk Melting Temperature

  • Mcrae E.

The Ge(111) surface undergoes a reversible disordering transition at 1050K, which is 160K below the Ge bulk melting temperature. Low energy electron diffraction (LEED) evidence has been interpreted to support a two-stage disordering mechanism: proliferation of strained double-layer islands with increasing crystal temperatures up to 960K; dissolution of islands at ...

On the Complexity of the Riemann Zeta Function

  • Odlyzko A.

This talk will present some improved algorithms for computing the Riemann zeta function and apply them to obtain better bounds on the complexity of some number theoretic functions.

Ion Beam Studies of Amorphous Si or "Laser Annealing Revisited"

  • Poate J.

The formation of amorphous Si by ion implantation is an important aspect of the science and technology of integrated circuit processing. Much has been learned of the kinetic and thermodynamic properties of amorphous Si using furnace and laser annealing. Results on the recently discovered regime of ion-beam-induced crystallization and impurity ...

Consultative Training at AT&T Bell Laboratories (NOT PUBLISHED)

  • Ebenau R.
  • Lewski F.

Consultative training is a program to facilitate the rapid, timely, and effective transfer of software engineering to improve organizational practices. It has been in use at AT&T Bell Laboratories since 1982, and is comprised of a unique combination of consulting and traditional classroom training techniques. Consultative training is designed to ...

Si Based MCM's

  • Bertram W.

A high-density, low-resistance interconnect structure for packaging multiple chips in a common package is described. The structure contains four copper conductor levels: one power, one ground, and two signal levels. Polyimide is used as the interlevel dielectric. Vias between levels contain electrodeposited nickel. The interconnect structure also contains a large-area, ...

High Resolution Transmission Electron Microscopy: A Structural and Chemical Probe of Materials

  • Ourmazd A.

High Resolution Transmission Electron Microscopy (HRTEM) is now a powerful probe for the structural analysis of semiconductor systems. Lattice images can be obtained in a number of orientations, in at least three of which the individual atomic columns can be resolved [1].

Ion-Beam-Induced Destruction of Superconducting Phase Coherence in YBa sub 2 Cu sub 3 O sub 7-delta

  • Anzlowar M.
  • Baldwin K.
  • Dynes R.
  • Hong M.
  • Howard R.
  • Hsieh T.
  • Jacobson D.
  • Kwo J.
  • Levi A.
  • Mankiewich P.
  • Poate J.
  • Short K.
  • Skocpol W.
  • White A.

We have explored the effects of ion beam irradiation on the electrical and structural properties of thin films of YBa sub 2 Cu sub 3 O sub 7-delta. Ion species and beam energies were chosen to span a wide range of nuclear energy loss and to insure that the ion ...

Dispersion and Noise of 1.3microns Multimode Lasers in Microwave Digital Systems

  • Bosch F.
  • Hakki B.
  • Lumish S.

The total intensity noise, including mode partitioning, were determined for multi-longitudinal mode 1.3micron InGaAsP buried heterostructure lasers. The impact on performance was measured at 1.7 Gb/s under various degrees of fiber dispersion.

Could Compliant External Leads Reduce the Strength of a Surface Mounted Device?

  • Suhir E.

A simplified analytical model of hybrid-integrated-circuit (HIC)/ printed-wire-band (PWB) assembly bowing is developed to explain a paradoxical situation, observed by T.F. Marinis, R.C. Reinert and W.M. Sherry during testing of compliant leaded HIC's: the bending moments applied to the PWB and caused the HIC fracture turned out in some tests ...

An Experience in Estimating Fault Coverage of a Protocol Test

  • Dahbura A.
  • Sabnani K.

In this paper, we describe an experience in estimating fault coverage of a test sequence designed to test the control portion of a protocol. The control portion of this protocol is modeled as an FSM. Our study uses Monte Carlo simulation and introduces a new notion of machine equivalence. An ...

The Role of Ponderomotive Forces in Multiphoton Ionization

  • Freeman R.

The name "Above Threshold Ionization" (ATI) is given to the process by which an atom placed in an intense field absorbs more than the minimum number of photons necessary to reach the ionization limit. The resulting photoelectrons leave the atom in well defined energy peaks, separated by the photon energy.

The Role of Ponderomotive Forces in Multiphoton Ionization

  • Freeman R.

The name "Above Threshold Ionization" (ATI) is given to the process by which an atom placed in an intense field absorbs more than the minimum number of photons necessary to reach the ionization limit. The resulting photoelectrons leave the atom in well defined energy peaks, separated by the photon energy.

Ceramic Processing of YBa sub 2 Cu sub 3 O sub 7 Based Superconductor

  • O'Bryan H.
  • Rhodes W.
  • Yan M.

Powder processing, calcination, sintering, and microstructural development of YBa sub 2 Cu sub 3 O sub 7 ceramic superconductors will be described. These processing steps are shown to have a significant effect on the phase composition, compositional homogeneity, and superconductivity of the ceramic superconductors.

Optical Design of a Digital Switch

  • Cloonan T.
  • Murdocca M.

An all-optical design of a digital switch that is derived from the Starlite architecture is described for optically nonlinear arrays of logic devices interconnected in free-space. The heart of the design is a self-routing packet network based on Batcher's bitonic sorter. The regularity of the network makes an all-optical design ...