论文信息 - Experimental demonstration of ±π/2-phase-shifted SSFBG encoder for security improvement in time-spreading OCDMA

Experimental demonstration of ±π/2-phase-shifted SSFBG encoder for security improvement in time-spreading OCDMA

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.

Naoya Wada | Zhensen Gao | Bo Dai | Xu Wang | Nobuyuki Kataoka

[1] Periklis Petropoulos,et al. A comparative study of the performance of seven- and 63-chip optical code-division multiple-access encoders and decoders based on superstructured fiber Bragg gratings , 2001 .

[2] Bo Dai,et al. Security Improvement Using $\pm\pi/2$-Phase-Shifted SSFBG En/Decoder in Time-Spreading OCDMA , 2010, IEEE Photonics Technology Letters.

[3] Shizhong Xie,et al. Phase-error-free, 1023-chip OCDMA En/de-coders Based on Reconstruction-equivalent-chirp Technology and Error-correction Method , 2007, OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference.

[4] K. Kitayama,et al. High reflectivity superstructured FBG for coherent optical code generation and recognition. , 2004, Optics express.

[5] Periklis Petropoulos,et al. Optical code division multiple access encoders and decoders based on superstructured fiber Bragg gratings , 2001 .

[6] Minghua Chen,et al. Code extraction from encoded signal in time-spreading optical code division multiple access. , 2010, Optics letters.

[7] K. Kitayama,et al. High-performance optical code generation and recognition by use of a 511-chip, 640-Gchip/s phase-shifted superstructured fiber Bragg grating. , 2005, Optics letters.