Riza and co-workers contributions in the field of communication have ranged from both the optical fiber domain to the laser communications wireless arena. Since 1998, the group has also proposed and demonstrated several novel optical imaging systems such as the first acousto-optic design based Optical Coherence Tomography (OCT) system, Angstrom sensitivity high speed scanning interferometric imagers, fiber-based scanning imaging endoscopes, and confocal microscopes such as spectral microscopes and agile no-moving parts microscopes. Between 1995-1998, Riza’s group introduced the use of optics for phased array ultrasound controls including the concept of intracavity optical wavelength to one dimensional space mapping using an intracavity single fiber probe and spatial distribution via wavelength multiplexing. Riza’s interest in medical optics goes back to his 1989 General Electric (GE) days with the development of simplest control liquid crystal electronic lens motivated by vision applications. The group has also pioneered optical security systems using multi-dimensional optical ID cards and a new Hybrid Photonic Signal Processing technique that combines the worlds of analog and digital signal processing. Another aspect of Riza group innovations includes a series of novel beamforming control systems for Phased Array Radars for both narrowband and wideband operations. Additional innovations included powerful Range-Doppler and transversal filter optical implementations suited for extreme bandwidth and signal complexity radar signal processing. Later work revolved around developing next generation highest phase stability acousto-optic signal processors such as convolvers, correlators, and spectrum analyzers for wideband Electronic Warfare (EW) applications.
Riza’s Defense Optics activities started from his Caltech Ph.D days in the mid-80’s where he showed for the first time how acousto-optics could be used to control transmit and receive mode phased array radars. So far, Riza group innovations have come in the following research areas. In a sense, one plays with LEGO ® style optical and electronic building blocks to realize inventions. By nature, these efforts are multidisciplinary, requiring knowledge at both the optical device level and the system application level. Riza Photonics group’s research and teaching activities use the physics of optics and the information manipulations of mathematics to invent, design, build and test innovative devices, sub-systems, and systems to solve current problems in science and engineering and to provide new approaches to study scientific fields. “Creating a Knowledge Base for Research and Teaching” Photonic Information Processing Systems Laboratory
This bit corresponds to Case 2 and will return an ASCII value of "1" if the current value of the input element exceeds the PEAK value. This bit corresponds to Case 2 and will return an ASCII value of "1" if the voltage value of the input element exceeds the PEAK value.īit-8 of the condition register is defined as the "current peak over" bit. Output will display a measurement value.īit-6 of the condition register is defined as the "measured data over" bit. This bit corresponds to Case 1 and will return an ASCII value of "1" if the RMS measured/computed data of the input element exceeds the RMS range value.īit-7 of the condition register is defined as the "voltage peak over" bit.
The PEAK value of the input signal is larger than 3 times the RMS range value (CF=3) OR the PEAK value of the input signal is larger than 6 times the RMS range value (CF=6). The RMS value of the input signal is larger than the range value.
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