Title :
Elimination of Multiple Access Interference in Ultrashort Pulse OCDMA Through Nonlinear Polarization Rotation
Author :
Guo, Changjian ; Hong, Xuezhi ; He, Sailing
Author_Institution :
State Key Lab. of Modern Opt. Instrum., Zhejiang Univ., Hangzhou, China
Abstract :
A multiple access interference elimination scheme based on nonlinear polarization rotation (NPR) is proposed for ultrashort pulse optical code-division multiple access (OCDMA). This scheme is experimentally investigated in a four-user and 2.5-Gb/s coherent OCDMA system encoded/decoded by 127-chip superstructured fiber Bragg gratings. The measured bit-error-rate results of the NPR-based thresholder are also compared with those of a conventional supercontinuum-based thresholder in both the back-to-back and 20-km transmission cases. Our proposed scheme has the advantage of colorless operation over C-band.
Keywords :
Bragg gratings; code division multiple access; error statistics; interference (signal); optical fibre networks; C-band; bit rate 2.5 Gbit/s; bit-error-rate; fiber Bragg gratings; multiple access interference; nonlinear polarization rotation; optical code-division multiple access; Fiber-optical communication; multiple-access interference (MAI); optical code-division multiple access (OCDMA); superstructured fiber Bragg grating (SSFBG);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2028158
