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; M. Z. M. Khan

doi:doi:10.3788/COL201715.100604

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

M. A. Shemis ¹A. M. Ragheb ²E. Alkhazraji ³M. A. Esmail ²H. Fathallah ⁴S. Alshebeili ^2,5M. Z. M. Khan ^1,*

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

Figures & Tables

Fig. 1. (a) Utilization of self-injection-locked Qdash LD in FSO communication. (b) Free-running lasing spectrum of Qdash LD at just above the threshold (110 mA). The inset of (b) shows the CW SMF coupled $L - I$ characteristics of the laser at a 14°C heatsink temperature. AMP, optical amplifier.

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Fig. 2. (Color online) Self-injection locking of different FP modes in the wavelength range of $\sim 1600 - 1607 nm$ , measured at the 2% output of the 2:98 CP. The inset shows the corresponding variation in the mode power and the SMSR across the locked FP modes.

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Fig. 3. (Color online) Measured SMSR and BER at different peak powers for the 1606.7 nm self-locked FP mode, and also the corresponding different injection ratio for the 5 m 32 Gbaud (128 Gb/s) DP-QPSK FSO transmission.

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Fig. 4. BER versus received power for 5 m/32 Gbaud and 5 m/44 Gbaud DP-QPSK transmission, utilizing a 1606.7 nm self-seeded FP mode as a sub-carrier. The insets show the corresponding constellation and eye diagrams.

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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.

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

Fig. 1. (a) Utilization of self-injection-locked Qdash LD in FSO communication. (b) Free-running lasing spectrum of Qdash LD at just above the threshold (110 mA). The inset of (b) shows the CW SMF coupled $L - I$ characteristics of the laser at a 14°C heatsink temperature. AMP, optical amplifier.

Fig. 2. (Color online) Self-injection locking of different FP modes in the wavelength range of $\sim 1600 - 1607 nm$ , measured at the 2% output of the 2:98 CP. The inset shows the corresponding variation in the mode power and the SMSR across the locked FP modes.

Fig. 3. (Color online) Measured SMSR and BER at different peak powers for the 1606.7 nm self-locked FP mode, and also the corresponding different injection ratio for the 5 m 32 Gbaud (128 Gb/s) DP-QPSK FSO transmission.

Fig. 4. BER versus received power for 5 m/32 Gbaud and 5 m/44 Gbaud DP-QPSK transmission, utilizing a 1606.7 nm self-seeded FP mode as a sub-carrier. The insets show the corresponding constellation and eye diagrams.

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

Fig. 1. (a) Utilization of self-injection-locked Qdash LD in FSO communication. (b) Free-running lasing spectrum of Qdash LD at just above the threshold (110 mA). The inset of (b) shows the CW SMF coupled L-I characteristics of the laser at a 14°C heatsink temperature. AMP, optical amplifier.

Fig. 2. (Color online) Self-injection locking of different FP modes in the wavelength range of ∼1600–1607 nm, measured at the 2% output of the 2:98 CP. The inset shows the corresponding variation in the mode power and the SMSR across the locked FP modes.

Fig. 3. (Color online) Measured SMSR and BER at different peak powers for the 1606.7 nm self-locked FP mode, and also the corresponding different injection ratio for the 5 m 32 Gbaud (128 Gb/s) DP-QPSK FSO transmission.

Fig. 4. BER versus received power for 5 m/32 Gbaud and 5 m/44 Gbaud DP-QPSK transmission, utilizing a 1606.7 nm self-seeded FP mode as a sub-carrier. The insets show the corresponding constellation and eye diagrams.

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Fig. 1. (a) Utilization of self-injection-locked Qdash LD in FSO communication. (b) Free-running lasing spectrum of Qdash LD at just above the threshold (110 mA). The inset of (b) shows the CW SMF coupled $L - I$ characteristics of the laser at a 14°C heatsink temperature. AMP, optical amplifier.

Fig. 2. (Color online) Self-injection locking of different FP modes in the wavelength range of $\sim 1600 - 1607 nm$ , measured at the 2% output of the 2:98 CP. The inset shows the corresponding variation in the mode power and the SMSR across the locked FP modes.