Conversion of RZ-OOK to RZ-BPSK by XPM in a Passive AlGaAs Waveguide

Published/Posted: October 1, 2011

Authors: Astar, W.; Apiratikul, P.; Cannon, B. M.; Mahmood, T.; Wathen, J. J.; Hryniewicz, J. V.; Kanakaraju, S.; Richardson, C. J. K.; Murphy, T. E.; Carter, G. M.

DOI: 10.1109/LPT.2011.2160165

Abstract: The conversion of data modulation format from 10-Gb/s return-to-zero on-off keying (RZ-OOK) to 10-Gb/s RZ binary phase-shift keying (RZ-BPSK) has been successfully carried out for the first time utilizing cross-phase modulation (XPM) in a passive AlGaAs waveguide. A 10e-9 bit-error-rate (BER) preamplified receiver sensitivity gain of ≈ 1 dB was measured for the converted RZ-BPSK relative to baseline RZ-OOK, whereas a penalty of ≈ 2.7 dB relative to baseline RZ-BPSK is explained to be due to cross-absorption modulation induced by nondegenerate two-photon absorption (ND-TPA), as well as to an insufficient nonlinear phase shift.

Citation:
W. Astar, P. Apiratikul, B. M. Cannon, T. Mahmood, J. J. Wathen, J. V. Hryniewicz, S. Kanakaraju, C. J. K. Richardson, T. E. Murphy and G. M. Carter, "Conversion of RZ-OOK to RZ-BPSK by XPM in a Passive AlGaAs Waveguide", IEEE Photon. Technol. Lett. 23(19) 1397-1399 (2011)
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Manuscript: Astar_PTL_23_1397_2011.pdf