Injection-Locked Quantum-Dash Laser in Far L-Band 192 Gbit/s DWDM Transmission

Mohammed Zahed Mustafa Khan, Emad A. Alkhazraji, Amr Ragheb, Maged Abdullah Esmail, Qazi Tareq, Habib Ali Fathallah, Khurram Karim Qureshi, Saleh Alshebeili

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


Injection locked quantum-dash laser diode-based comb source is employed in wavelength-division multiplexed (WDM) optical transmission covering ~1610 nm L-band optical telecommunication window. An aggregate data rate of 192 Gbits/s (3 × 32 GBaud-QPSK reaching 7% FEC overhead) is demonstrated over three 50 GHz separated channels in coherent transmission over a 10 km-long single mode fiber. A thorough investigation of the radio-frequency (RF) characteristics of all channels is carried out in terms of the linewidth, phase, and frequency noises, showing minimum values of 44 kHz, -80 dBc/Hz, and 5.2 × 10 11 Hz 2 /Hz, respectively. Also, an integrated average relative intensity noise of ~-132 dB/Hz is reported for the central channel. To the best of our knowledge, this constitutes the first report and demonstration of a dense WDM (DWDM) in an extended L-band regime using a comb source.
Original languageEnglish (US)
Pages (from-to)1-11
Number of pages11
JournalIEEE Photonics Journal
Issue number5
StatePublished - Oct 2020
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2021-02-11
Acknowledgements: The work of MZMK, EA, and QT were supported by King Fahd University of Petroleum and Minerals (KFUPM) under King AbdulazizCity for Science and Technology (KACST), Technology Innovation Center (TIC) for Solid-State Lighting sub-awarded grant EE002381, which is a part of primary grant KACST TIC R2-FP-008 awarded to King Abdullah University of Science and Technology. The work of AR and SA was funded by the National Plan for Science, Technology and Innovation (MAARIFAH), King Abdulaziz City for Scienceand Technology, Kingdom of Saudi Arabia, Award Number (2-17-02-001-0009).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.


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