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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 31,
  • Issue 15,
  • pp. 2501-2507
  • (2013)

BPSK Phase Regeneration Based on Second-Order Nonlinearities in Periodically Poled Lithium Niobate

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Abstract

With the advance of phase modulated optical systems all-optical regeneration of Phase-Shift Keying (PSK) signals has become a key functionality for future high-speed optical networks. This paper presents a phase-sensitive optical phase regenerator for Binary Phase-Shift Keying (BPSK) signals based on direct second-order nonlinear effects in Periodically Poled Lithium Niobate (PPLN) waveguides. Analytically and through simulations, the proposed set-up is found to require lower input power for efficient operation than more complex current solutions exploiting cascaded second-order nonlinear effects, while showing lower residual noise and the prospect of efficient intensity regeneration through saturation.

© 2013 IEEE

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