Abstract

A novel, optical temporal encoding/decoding method is proposed and demonstrated. This can be accomplished by passing a short optical pulse through cascaded long-period fiber gratings. It has the advantages of constructing ultrafast codes and developing resistance to interferometric perturbations among the coded pulses. To verify the feasibility as a code generator, two types of codes are generated and compared with the predicted code patterns. In addition, to show an application for an optical code-division-multiplexing system, decoding performances with matched and unmatched decoders are compared.

© 2003 Optical Society of America

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Appl. Opt. (1)

IEEE J. Sel. Top. Quantum Electron (1)

G. E. Town, K. Chan, and G. Yoffe, �??Design and performance of high-speed optical pulse-code generators using optical fiber Bragg gratings,�?? IEEE J. Sel. Top. Quantum Electron. 5, 1325-1331 (1999).

IEEE Photon. Technol. Lett. (3)

P. Petropoulos, N. Wada, P. C. Teh, M. Ibsen, W. Chujo, K.-I. Kitayama, and D. J. Richardson, �??Demonstration of a 64-chip OCDMA system using superstructured fiber gratings and time-gating detection,�?? IEEE Photon. Technol. Lett. 13, 1239�??1241 (2001).
[CrossRef]

S. Choi, T. J. Eom, J. W. Yu, B. H. Lee, and K. Oh, �??Novel all-fiber bandpass filter based on hollow optical fiber,�?? IEEE Photon. Technol. Lett. 14, 1701-1703 (2002).
[CrossRef]

L. R. Chen, �??Flexible fiber Bragg grating encoder/decoder for hybrid wavelength-time optical CDMA,�?? IEEE Photon. Technol. Lett. 13, 1233 �??1235 (2001
[CrossRef]

IEEE Trans. Circuits Syst. (1)

E. Marom, �??Optical delay line matched filters,�?? IEEE Trans. Circuits Syst. CAS-25, 360-364 (1978).
[CrossRef]

IEEE Trans. Commun. (1)

J. A. Salehi, �??Code division multiple-access techniques in optical fiber networks-Part I: Fundamental principles,�?? IEEE Trans. Commun. 37, 824-833 (1989).
[CrossRef]

J. Lightwave Technol (1)

P. R. Prucnal, M. A. Santoro, and T. R. Fan, �??Spread spectrum fiber-optic local area network using optical processing,�?? J. Lightwave Technol. 4, 547-554 (1986).

J. Lightwave Technol. (1)

A. S. Holmes and R. R. A. Syms, �??All-optical CDMA using Quasi-prime codes,�?? J. Lightwave Technol. 10, 279- 286 (1992).
[CrossRef]

J. Opt. Soc. Korea (1)

Opt. Lett. (1)

Optoelectronics and Communications (1)

S. Ramachandran, "Dispersion management with higher order mode fibers," Proc. Optoelectronics and Communications (OECC �??2003) Conf., Shanghai, China, 573-574 (2003).

Proc. IEEE, INFOCOM 2002 (1)

M. Murata and K.-I. Kitayama, �??Ultrafast photonic label switch for asynchronous packets of variable length,�?? Proc. IEEE, INFOCOM 2002, 1, 371-380 (2002).

Proc. Optoelectronics and Communications (1)

T. J. Eom, N. H. Seong, D. Y. Kim, C. S Park, U.-C. Paek, and B. H. Lee, �??OTDM signal generation using a long-period fiber grating pair,�?? Proc. Optoelectronics and Communications (OECC/IOOC �??2001) Conf., Sydney, Australia, 117-118 (2001).

Other (1)

G.-C. Yang and W. C. Kwong, Prime Code with Applications to CDMA Optical and Wireless Networks (Artech House, Boston, MA, 2002).

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