Title :
Experimental demonstration of ±π/2-phase-shifted SSFBG encoder for security improvement in time-spreading OCDMA
Author :
Dai, Bo ; Gao, Zhensen ; Wang, Xu ; Kataoka, Nobuyuki ; Wada, Naoya
Author_Institution :
Sch. of Eng. & Phys. Sci., Heriot-Watt Univ., Edinburgh, UK
Abstract :
We experimentally demonstrate the security improvement using ±π/2-phase-shifted SSFBG encoder in time-spreading OCDMA. Compared with conventional 0/π-phase-shifted SSFBG encoder, ±π/2-phase-shifted SSFBG encoder conceals code pattern well in the encoded waveform. We also investigate the influence of input pulse and the experimental measurement matches the calculated result very well.
Keywords :
Bragg gratings; code division multiple access; code division multiplexing; optical fibres; telecommunication security; 2-phase-shifted SSFBG encoder; security improvement; superstructured fiber Bragg grating; time-spreading OCDMA; Decoding; Encoding; Gratings; Optical fibers; Optical pulses; Optical reflection; Security;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2010 Asia
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-7111-9
DOI :
10.1109/ACP.2010.5682595
