Photonics (May 2021)

Extended L-Band InAs/InP Quantum-Dash Laser in Millimeter-Wave Applications

  • Amr M. Ragheb,
  • Qazi Tareq,
  • Emad Alkhazraji,
  • Maged A. Esmail,
  • Saleh Alshebeili,
  • Mohammed Zahed Mustafa Khan

DOI
https://doi.org/10.3390/photonics8050167
Journal volume & issue
Vol. 8, no. 5
p. 167

Abstract

Read online

We report on the generation and transmission of a millimeter-wave (MMW) signal with a frequency of 28 GHz by employing an InAs/InP quantum-dash dual-wavelength laser diode (QD-DWL) emitting in the ~1610 nm extended L-band window. The self-injection locking (SIL) technique has been engaged to improve the linewidth and reduce the noise of the optical tone. Besides, the transmission of a 2 Gbits/s quadrature phase-shift keying (QPSK)-modulated 28-GHz MMW beat tone over a hybrid 20-km radio-over-fiber combined with 5-m radio-over-free-space-optics and up to 6-m radio frequency wireless link has been demonstrated. Moreover, comparing the proposed QD-DWL with a commercial laser showcased similar performance characteristics, making the QD-DWL a candidate source for MMW applications.

Keywords