Title :
8-bit integrated optical SNS ADC
Author :
Pace, P.E. ; Powers, J.P. ; Pieper, R.J. ; Walley, R. ; Yamakoshi, H. ; Crowe, C. ; Nimri, B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Naval Postgraduate Sch., Monterey, CA, USA
Abstract :
Recently, a new technique has been described for extending the resolution of an integrated optical multi-interferometer analog-to-digital converter (ADC). These types of ADCs can directly digitise the signals from an antenna and play an important role in eliminating the need for intermediate frequency and baseband processing. With resolution greater than 12 bits, these types of architectures are useful for a variety of applications. The new technique is based on the incorporation of a symmetrical number system (SNS) encoding to provide high resolution (greater than 1-bit per interferometer) while also reducing the complexity of the optical hardware. In this paper we present recent developments on an 8-bit design using this approach
Keywords :
analogue-digital conversion; coding errors; digital arithmetic; electro-optical devices; encoding; integrated optics; light interferometers; 8 bit; 8-bit design; SNS encoding; analog-to-digital converter; integrated optical ADC; multi-interferometer type; resolution extension; symmetrical number system encoding; Baseband; Encoding; Frequency; Integrated optics; Interferometric lithography; Laboratories; Optical interferometry; Optical modulation; Optical waveguides; Signal resolution;
Conference_Titel :
System Theory, 1995., Proceedings of the Twenty-Seventh Southeastern Symposium on
Conference_Location :
Starkville, MS
Print_ISBN :
0-8186-6985-3
DOI :
10.1109/SSST.1995.390601
