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  • Chinese Optics Letters
  • Vol. 15,
  • Issue 10,
  • pp. 100604-
  • (2017)

Self-seeded quantum-dash laser based 5 m–128 Gb/s indoor free-space optical communication

M. A. Shemis, A. M. Ragheb, E. Alkhazraji, M. A. Esmail, H. Fathallah, S. Alshebeili, and M. Z. M. Khan

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Abstract

We demonstrate an indoor 5 m free-space optical wireless coherent communication in mid L-band (1606.7 nm) by employing a tunable self-seeded InAs/InGaAlAs/InP quantum-dash (Qdash) laser as a subcarrier generator for 128 Gb/s dual-polarization quadrature phase shift keying (DP-QPSK) modulation signal. The bare Qdash laser diode displays ∼6 nm self-locked Fabry–Perot mode tunability with ∼30 dB side mode suppression ratio (SMSR) and ∼10 dBm mode power across the tuning range, thus encompassing ∼10 modes with an achievable capacity of 1.28 Tb/s (10×128 Gb/s) and potentially qualifying the source requirements for future access networks.

© 2017 Chinese Laser Press

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