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

Author Affiliations
1 Optoelectronics Research Laboratory, Electrical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
2 KACST-TIC in Radio Frequency and Photonics for the e-Society (RFTONICS), Riyadh 11421, Saudi Arabia
3 Department of Electrical and Electronics Engineering Technology, Jubail Industrial College, Jubail 31951, Saudi Arabia
4 Computer Department of the College of Science of Bizerte, University of Carthage, Tunis 1054, Tunisia
5 Electrical Engineering Department, King Saud University, Riyadh 11421, Saudi Arabia
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.

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