Title :
Design of FBG En/Decoders in Coherent 2-D Time-Wavelength OCDMA Systems
Author :
Zhang, Ye ; Chen, Hongwei ; Si, Zhijian ; Ji, Heng ; Xie, Shizhong
Author_Institution :
Tsinghua Univ., Beijing
fDate :
6/1/2008 12:00:00 AM
Abstract :
A novel fiber Bragg grating (FBG)-based en/decoder for the two-dimensional (2D) time-spreading wavelength-hopping optical coding is proposed. Compared with other 2D en/decoders, the proposed en/decoding for an optical code-division multiple-access (OCDMA) system uses a single phase-encoded FBG and coherent en/decoding. Furthermore, combined with reconstruction-equivalent-chirp technology, such en/decoders can be realized with a conventional simple fabrication setup. Experimental results of such en/decoders and the corresponding system test at a data rate of 5 Gb/s demonstrate that this kind of 2-D FBG-based en/decoders could improve the performances of OCDMA systems.
Keywords :
Bragg gratings; code division multiple access; code division multiplexing; codecs; optical fibre communication; 2D time-spreading wavelength-hopping optical coding; 2D time-wavelength OCDMA systems; FBG decoders; FBG encoders; bit rate 5 Gbit/s; fiber Bragg grating decoder; fiber Bragg grating encoder; optical code-division multiple-access system; reconstruction-equivalent-chirp technology; Arrayed waveguide gratings; Bragg gratings; Decoding; Fiber gratings; Multiaccess communication; Optical fiber devices; Optical fiber networks; Phased arrays; Sampling methods; Two dimensional displays; Fiber Bragg grating (FBG); optical code-division multiple-access (OCDMA);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.922331
