Title :
A 10 Gb/s optical code division multiplexing using 8-chip optical bipolar code and coherent detection
Author :
Wada, Naoya ; Kitayama, Ken-ichi
Author_Institution :
Commun. Res. Lab., Minist. of Posts & Telecommun., Tokyo, Japan
fDate :
10/1/1999 12:00:00 AM
Abstract :
bOptical code division multiplexing (OCDM) using optical bipolar code and coherent detection is a new multiplexing method for future fiber-optic communication networks. Some optical bipolar codes, which are described by the combination of phase of optical chip pulses, with a repetition frequency 10 GHz are generated experimentally. Temporal matched filtering for the 10 Gb/s OCDM is demonstrated using optical encoder and decoder, and their fundamental properties are investigated. Effect of interference code is shown experimentally and discussed. The novel coherent detection system with autocorrelation sidelobe suppression using balanced detector and local light source is proposed. The pseudocoherent detection is demonstrated experimentally by using a clock pulse. Advantageous properties of the coherent detection are shown. The fundamental functions to realize the gigabit rate OCDM system is revealed
Keywords :
code division multiple access; light coherence; multiplexing; optical correlation; optical fibre networks; photodetectors; 10 Gbit/s; 8-chip optical bipolar code; Gb/s optical code division multiplexing; autocorrelation sidelobe suppression; balanced detector; clock pulse; coherent detection; coherent detection system; fiber-optic communication networks; fundamental properties; gigabit rate OCDM system; local light source; multiplexing method; optical bipolar codes; optical chip pulse phase; optical decoder; optical encoder; pseudocoherent detection; repetition frequency; Code division multiplexing; Communication networks; Filtering; Frequency; Matched filters; Optical fiber communication; Optical fiber filters; Optical fiber networks; Optical filters; Optical pulse generation;
Journal_Title :
Lightwave Technology, Journal of
