Title :
On realizing bipolar optical access codecs with Walsh-coded liquid crystal modulators
Author :
Chih-Ta Yen ; Jen-Fa Huang ; Ping-En Chih
Author_Institution :
Dept. of Electr. Eng., Nat. Formosa Univ., Yunlin, Taiwan
Abstract :
A realization technique of optical CDMA spectral-coding with bipolar Walsh codes based on SLM codecs was proposed and experimentally demonstrated. The proposal utilizes the phase delay characteristics of SLM to construct our SLM encoder/decoder. The spectral decoder verified the correlations of the Walsh codes and showed that binary data could be recovered by correlation detection. This paper also demonstrated that the system rejects multiple-access interference.
Keywords :
Walsh functions; code division multiple access; codecs; liquid crystal devices; optical communication equipment; spatial light modulators; SLM codecs; SLM encoder-decoder; Walsh-coded liquid crystal modulators; bipolar optical access codecs; correlation detection; multiple-access interference; optical CDMA spectral-coding; phase delay characteristics; Codecs; Correlation; Decoding; Optical fibers; Optical receivers; Optical transmitters;
Conference_Titel :
Microoptics Conference (MOC), 2013 18th
Conference_Location :
Tokyo
