Abstract

This paper reports comprehensive experimental results on a femtosecond code-division multiple-access (CDMA) communication system test bed operating over optical fiber in the 1.5 \mum communication band. Our test bed integrates together several novel subsystems, including low-loss fiber-pigtailed pulse shapers for encoding-decoding, use of dispersion equalizing fibers in dispersion compensated links for femtosecond pulse transmission and also in femtosecond chirped pulse amplification (CPA) erbium doped fiber amplifiers (EDFA's), and high-contrast nonlinear fiber-optic thresholders. The individual subsystems are described, and single-user system level experimental results demonstrating the ability to transmit spectrally encoded femtosecond pulses over a 2.5-km dispersion compensated fiber link followed by decoding and high contrast nonlinear thresholding are presented.

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J. Lightwave Technol. (7)

J. A. Salehi, A. M. Weiner, and J. P. Heritage, "Coherent ultrashort light pulse code-division multiple access communication systems," J. Lightwave Technol., vol. 8, pp. 478-491, 1990.

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

S. Tamura, S. Nakano, and K. Okazaki, "Optical code-multiplex transmission by gold sequences," J. Lightwave Technol., vol. 3, pp. 121-127, 1985.

R. A. Griffin, D. D. Sampson, and D. A. Jackson, "Coherence coding for photonic code-division multiple access networks," J. Lightwave Technol., vol. 13, pp. 1826-1837, 1995.

M. E. Marhic, "Coherent optical CDMA networks," J. Lightwave Technol., vol. 11, pp. 854-864, 1993.

M. Kavehrad and D. Zaccarin, "Optical code-division-multiplexed systems based on spectral encoding on noncoherent sources," J. Lightwave Technol., vol. 13, pp. 534-545, 1995.

M. Stern, J. P. Heritage, W. T. Anderson, and J. Kilmer, "Soliton technique to characterize single-mode fiber dispersion," J. Lightwave Technol., vol. 10, pp. 1777-1779, 1992.

Opt. Lett. (7)

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