Zobrazeno 1 - 10
of 170
pro vyhledávání: '"Alastair D. McAulay"'
Autor:
Alastair D. McAulay
Publikováno v:
Optics & Laser Technology. 32:421-427
A novel arithmetic unit is proposed consisting of a pipelined optical ripple carry adder that adds two words with bits multiplexed by different wavelengths on a single fiber. The addition result is returned to a fiber bus in the same format as the in
Autor:
Alastair D. McAulay
Publikováno v:
Optics and Photonics for Information Processing VII.
Data is commonly moved through optical fiber in modern data centers and may be stored optically. We propose an optical method of data mining for future data centers to enhance performance. For example, in clustering, a form of unsupervised learning,
Autor:
Alastair D. McAulay
Recent advances in ultra-high-power lasers, including the free-electron laser, and impressive airborne demonstrations of laser weapons systems, such as the airborne laser, have shown the enormous potential of laser technology to revolutionize 21st ce
Autor:
Alastair D. McAulay
Publikováno v:
SPIE Proceedings.
A common problem arising in optical processing is that problem dimensions often do not match the dimensions for the optical devices or optical architecture. Such is usually the case for time t in a video camera that provides continuous samples of x,
Autor:
Alastair D. McAulay
Publikováno v:
SPIE Proceedings.
Target recognition can be enhanced by reducing image degradation due to atmospheric turbulence. This is accomplished by an adaptive optic system. We discuss the forms of degradation when a target is viewed through the atmosphere1: scintillation from
Autor:
Alastair D. McAulay
Publikováno v:
Radar Sensor Technology XVI.
We investigate a vircator as an economical high power pulsed microwave source for radar. Because of the inconsistency of spark gaps in the driver and operation of the tube based vircator, the resulting ringing pulse has a different pulse shape each t
Autor:
X. Xu, Alastair D. McAulay
Publikováno v:
Optics & Laser Technology. 26:251-258
Optically controlled two-way optical switches are useful for high-speed photonic switches and rapidly reconfigurable optical interconnection networks. A directional coupler forms such a switch because the field can be switched from one waveguide to t
Autor:
Alastair D. McAulay
Publikováno v:
SPIE Proceedings.
Two ways to improve spatial coherence in high power beams are considered and compared, spatial filter and adaptive optics. High power in lasers is usually produced by using a succession of optical amplifiers. As intensity increases in optical amplifi
Autor:
Alastair D. McAulay
Publikováno v:
SPIE Proceedings.
We propose an airborne ground penetration radar that detects small buried objects. Earth electrical characteristics are discussed. Radar frequency is considered to penetrate 30 cm into typical ground and bandwidth is selected to achieve 5 cm range re
Autor:
Alastair D. McAulay
Publikováno v:
SPIE Proceedings.
Recently developed millimeter wave radar has advantages for target identification over conventional microwave radar which typically use lower frequencies. We describe the pertinent features involved in the construction of the new millimeter wave rada