Publication: Optoelectronic multiplexer for digital data processing based on lipid crystal pixels and optical fiber elements
Loading...
Identifiers
Publication date
2007-04-11
Defense date
Advisors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
Impact
Export
Abstract
In this work, we present an optoelectronic digital multiplexer 4:1 based on a multipixel nematic liquid crystal cell. This device uses two optical control signals to select one among four possible optical data inputs. These data signals are generated by four red LEDs, which are guided through plastic optical fiber towards liquid crystal pixels. For our purpose, only four pixels of the cell will be used to modulate the optical signal across them. Each pixel will be addressed by a square waveform coming from the conditioning circuit managed by a microcontroller system. The electronic control allows the multiplexer to work as as simple two input logical gates such as AND, NAND, OR, NOR, XOR and XNOR. The operation time of the device is limited by the response time of LC cell that is in the millisecond range.
Description
Keywords
Optoelectronic digital multiplexer, Optical logic gate, Liquid crystals, Digital processing
Bibliographic citation
Opto-Electronics Review, Vol. 15, nº 2, p. 78 - 81, 2007