Engineering topics
Publications and source records attributed to Muller, R..
Multi-wavelength arrays of colliding pulse mode-locked (CPM) lasers have been demonstrated for wavelength division multiplexing (WDM) applications. The need for increased bandwidth is driving the development of both increased speed in time division multiplexing (TDM) and more channels in WDM for fiber optic communication systems.
High-performance blazed gratings have been fabricated on convex surfaces by electron beam lithography, for use in an instrument to be flown on NASA's NM-EO1 spacecraft.
We will discuss the application to astronomical instrumentation, theory of operation, the manufactureing technique, and its current limitations and possible means of improvement.
The current status of III-V tunable diode lasers (TDLs) emitting between 1-5 mue wavelengths for spectroscopy and chemical analysis is described.
Diffractive optical elements (microlenses) for quantum will infrared photodetectors (QWIPs) were fabricated by two techniques: 1) standard lithography of a binary optical structure and 2) PMMA pattern transfer for an analog diffractive optic structure.
A new technology for infrared optical filters is presented. We have produced a bandpass filter consisting of a thin Si wafer with cross-shaped metal patterns deposited on both sides.
Computer generated phase holograms have been fabricated by E-Beam lithography in PMMA using patterned exposure and subsequent partial development.
Communications and data handling system improves signal to noise ratio when transmission channel is perturbed by noise. Telemetry system consists of airborne source, Gaussian additive noise channel, and ground receiver unit. Advantages of system are given.
Self-synchronizing, biorthogonal coded pulse code modulation telemetry system for communicating with unmanned spacecraft
Concatenated coding technique for PCM deep space communications
Parity bit performance curves for pulse code modulated telemetry system