Authors:
M. Z. M. Khan
1
;
2
Affiliations:
1
Center for Communication Systems and Sensing, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
;
2
Optoelectronics Research Laboratory, Electrical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
Keyword(s):
Millimeter Waves, Radio-over-fiber, InAs/InP Quantum-dash Laser, L-band Optical Communication.
Abstract:
In this paper, we report on our recent demonstrations on deploying mid L-band ~1610 nm quantum-dash (Qdash) laser diode (LD) in millimeter-wave (MMW) applications. 28 and 30 GHz MMW beat-tones are generated using a self-injection-locked (SIL) Qdash LD-based comb source (QDCS) with phase noise of ~-120 dBc/Hz at 1MHz offset frequency. Moreover, we demonstrated transmission of these MMWs over various channels comprising of single-mod-fiber (SMF), generally known as radio-over-fiber (RoF), free-space-optics (FSO), known as radio-over-FSO (RoFSO), and wireless (WL) links, which are attractive solutions for future flexible next-generation access networks (NGANs). In particular, we demonstrated successful transmission of 28 and 30 GHz MMW modulated with analog 2 Gb/s quadrature-phase-shift-keying (QPSK) data over hybrid 20 km SMF – 5 m FSO and 0- 6 m WL channel. Moreover, we also discussed our very recent preliminary results of 50 GHz high-frequency generation and transmission utilizing QD
CS. In this case, we showed error-free transmission of 2 Gb/s QPSK data over 50 GHz carrier and 11.6 km SMF – 6 m FSO and 0-1 m WL channel. This rule-changing broad multi-wavelength lasing spectrum from Qdash LD and emission covering S- to U-band has made it a prime contender for NGANs.
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