Chinese Optics Letters, 2017, 15 (10): 100604, Published Online: Jul. 19, 2018
Self-seeded quantum-dash laser based 5 m–128 Gb/s indoor free-space optical communication
060.2605 Free-space optical communication 250.5590 Quantum-well, -wire and -dot devices 140.5960 Semiconductor lasers
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.
M. A. Shemis, A. M. Ragheb, E. Alkhazraji, M. A. Esmail, H. Fathallah, S. Alshebeili, M. Z. M. Khan. Self-seeded quantum-dash laser based 5 m–128 Gb/s indoor free-space optical communication[J]. Chinese Optics Letters, 2017, 15(10): 100604.