Title :
Optical CDMA network codecs structured with M-sequence codes over waveguide-grating routers
Author :
Yang, Chao-Chin ; Huang, Jen-Fa ; Tseng, Shin-Pin
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Taiwan, Taiwan
Abstract :
A compact optical code-division multiple-access (OCDMA) network coder-decoder (codec) of a spectral-amplitude-coding (SAC) scheme is presented. The scheme utilizes M-sequence-coded OCDMA codecs structured on arrayed-waveguide-grating (AWG) routers. By using the cyclic properties of AWG routers and M-sequence codes, the codecs pair can encode-decode multiple code words simultaneously, thus, each user can share the same hardware for coding process. The configuration not only preserves the ability of multiple-access interference cancellation in SAC-OCDMA system, but also results in a cheap system with reduced system complexity.
Keywords :
amplitude shift keying; arrayed waveguide gratings; code division multiple access; decoding; encoding; telecommunication network routing; AWG routers; M -sequence codes; OCDMA codec; arrayed-waveguide-grating routers; multiple-access interference cancellation; optical code-division multiple-access network coder-decoder; spectral-amplitude-coding; Arrayed waveguide gratings; Codecs; Decoding; Fiber gratings; Multiaccess communication; Multiple access interference; Optical crosstalk; Optical fiber LAN; Optical fiber networks; Optical waveguides;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.823089
