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Bergman, L.

Publications and source records attributed to Bergman, L..

At least 19 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS2001

An introduction to the Gilgamesh PIM architecture

The focus of the work conducted is on a class of structures made possible by the merger of logic and memory. Processing In Memory (PIM) extends the design space much farther by closely associating the logic with the memory interface to realize innovative structures never previously possible and thus exposing entirely new opportunities for computer architecture.

Gilgamesh PIM CMOS↗
NASA NTRS2001

Leveraging middleware-based infrastructure for remote exploration

This paper describes middleware systems developed at JPL, shows how leveraging middleware implementation strategies can facilitate building a mission operations system for managing multiple interacting missions on Mars, and proposes an approach to implementing demonstrations as part of a roadmap providing progressively more intelligent remote exploration.

middleware↗
NASA NTRS2001

Middleware as a mission enabler for Mars exploration

Effective midleware can improve the capability of business and science applications in several ways, e.g., by hiding platform heterogeneity or by providing standard shared services which reduce the complexity or increase the capability of every application. Recent successes in midleware, such as multi-tier client/server and web-based architectures, have fueled phenomenal growth in enterprise level applications, which provide better integration and more rapid adaptability of business in many fields.

middleware software architecture services data com↗
NASA NTRS2000

Overview of Technology Work

Explore the source record for details and available documents.

technology remote sensing tele-operated planetary ↗
NASA NTRS1998

Fiber Optics for Strain Measurements and Robust Communications

Until recently, fiber optics tended to be regarded only as a medium for the transmission of large quantities of data. Work done in our laboratory has exteded the application of fibers into a little-known area, the delivery of power.

Fiber Optics Robust Communications↗
NASA NTRS1997

Enhanced Pulse Compression in Nonlinear Fiber by a WDM Optical Pulse

A new way to compress an optical pulse in a single-mode fiber is presented in this paper. By the use of the cross phase modulation (CPM) effect caused by the nonlinearity of the optical fiber, a shepherd pulse propagating on a different wavelength beam in a wavelength division multiplexed (WDM) single-mode fiber system can be used to enhance the pulse compression of a co-propagating primary pulse.

pulse compression↗
NASA NTRS1996

Pulse Shepherding in Nonlinear Fiber Optics

In a wavelength division multiplexed fiber system, where pulses on different wavelength beams may co-propagate in a single mode fiber, the cross-phase-modulation (CPM) effects caused by the nonlinearity of the optical fiber are unavoidable. In other words, pulses on different wavelength beams can interact with and affect each other through the intensity dependence of the refractive index of the fiber. Although CPM will not cause energy to be exchanged among the beams, the pulse shapes and locations on these beams can be altered significantly. This phenomenon makes possible the manipulation and control of pulses co-propagating on different wavelength beams through the introduction of a shepherd pulse at a separate wavelength. How this can be accomplished is demonstrated in this paper.

Yeh, C.↗
NASA NTRS1996

Pulse Shepherding in Nonlinear Fiber Optics

In a wavelength division multiplexed (WDM) fiber system, where pulses on different wavelength beams may co-propagate in a single mode fiber, the cross phase modulation (CPM) effects caused by the nonlinearity of the optical fiber are unavoidable.

intensity↗