$In~Situ$ Method for Power Re-Equalization of Wavelength Pulses Inside of OCDMA Codes

A simple in situ method to equalize power among individual wavelength pulses representing 2-D wavelength-hopping time-spreading optical code division multiple access (OCDMA) code originally generated by a fiber Bragg grating-based OCDMA encoder is presented. Experimental data obtained in a field-based multiuser OCDMA testbed shows that applying this method results in system performance enhancements, which was demonstrated by observing the improved bit error rate during the field trials.

[1]  Wing C. Kwong,et al.  Prime Codes with Applications to CDMA Optical and Wireless Networks , 2002 .

[2]  P. Prucnal,et al.  Performance enhancement of optical CDMA systems using ultrafast all-optical sampling , 2005, IEEE Conference Avionics Fiber-Optics and Photonics, 2005..

[3]  Ting Wang,et al.  Achieving Physical Layer Security / Privacy with Self-Wrapped OCDM Transmission , 2007, MILCOM 2007 - IEEE Military Communications Conference.

[4]  I. Andonovic,et al.  Interferometric Noise Characterisation of a 2-D Time Spreading Wavelength Hopping OCDMA Networks using FBG Encoding/Decoding , 2007, 2007 9th International Conference on Transparent Optical Networks.

[5]  L. Kazovsky,et al.  Polarization sensitivity of 40 Gb/s transmission over short-reach 62.5 /spl mu/m multimode fiber using single-mode transceivers , 2004, Optical Fiber Communication Conference, 2004. OFC 2004.

[6]  Joseph Berthold.  Evolution of WDM in transport networks , 1998, OFC '98. Optical Fiber Communication Conference and Exhibit. Technical Digest. Conference Edition. 1998 OSA Technical Digest Series Vol.2 (IEEE Cat. No.98CH36177).

[7]  Paul R. Prucnal,et al.  Signal processing in high speed OTDM networks , 1998, 24th European Conference on Optical Communication. ECOC '98 (IEEE Cat. No.98TH8398).

[8]  Yue-Kai Huang,et al.  Integration of Dual-Code Optical CDMA Encoder and Decoder by Holographic Bragg Reflectors , 2007, OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference.

[9]  Kensuke Sasaki,et al.  Demonstration of 10 Gbit/s-Based Time-Spreading and Wavelength-Hopping Optical-Code-Division-Multiplexing Using Fiber-Bragg-Grating En/Decoder , 2005, IEICE Trans. Commun..

[10]  Ye Zhang,et al.  Design of FBG En/Decoders in Coherent 2-D Time-Wavelength OCDMA Systems , 2008, IEEE Photonics Technology Letters.

[11]  Wing C. Kwong,et al.  Performance comparison of asynchronous and synchronous code-division multiple-access techniques for fiber-optic local area networks , 1991, IEEE Trans. Commun..

[12]  P. Vijay Kumar,et al.  Optical orthogonal codes-New bounds and an optimal construction , 1990, IEEE Trans. Inf. Theory.

[13]  E. Mutafungwa,et al.  Multiclass optical orthogonal codes for multiservice optical CDMA networks , 2006, Journal of Lightwave Technology.

[14]  Alan E. Johnson,et al.  Fibre Bragg grating based spectral encoder/decoder for lightwave CDMA , 1999 .

[15]  K. Kitayama,et al.  OCDMA over WDM PON-solution path to gigabit-symmetric FTTH , 2006, Journal of Lightwave Technology.

[16]  I. Andonovic,et al.  Incoherent Ultrafast OCDMA Receiver Design With 2 ps All-Optical Time Gate to Suppress Multiple-Access Interference , 2008, IEEE Journal of Selected Topics in Quantum Electronics.

[17]  P.R. Prucnal,et al.  Demonstration of an All-Optical OCDMA Encryption and Decryption System With Variable Two-Code Keying , 2008, IEEE Photonics Technology Letters.

[18]  Zou Wei,et al.  Codes for Spectral-Amplitude-Coding Optical , 2002 .

[19]  Ivan Andonovic,et al.  Wavelength hopping/time spreading code division multiple access systems , 1994 .