Broadly Tunable Self-injection Locked InAs/InP Quantum-dash Laser Based Fiber/FSO/Hybrid Fiber-FSO Communication at 1610 nm

Shemis, M. A.; Alkhazraji, E.; Ragheb, Amr; Khan, Muhammad Talal Ali; Esmail, Maged Abdullah; Fathallah, Habib; Alshebeili, Saleh A.

doi:10.1109/jphot.2018.2809566

Cited by 23 publications

(19 citation statements)

References 23 publications

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“…Furthermore, although a DP-QPSK modulation scheme was adopted in the transmission, due to equipment limitations, only one of the two received polarizations was analyzed. In other words, by including the second received polarization, which should show a similar performance to the other one as we have observed in our previous works [6,10], the effective aggregate data rate would double, i.e., 384 Gbit/s. It is to be noted that the number of unified optical power channels and their wavelength selection are constrained by the comb generating circuit and the limited bandwidths of various equipment (EDFA, TBPF, and OMA), respectively.…”

Section: Coherent Dwdm Transmissionsupporting

confidence: 72%

“…To this end, self-assembled InAs/InP quantum dash (Qdash) nanostructure-based laser diodes emerge as potential light sources with demonstrated emission in a wide range of wavelengths covering the S-, C-, L-, and U-bands [5][6][7]. In particular, mid and far L-band Qdash laser diodes (QDLD) are of great interest from the outlook of future NG-PONs whose primary goal is maximizing the per-user capacity and increasing the number of possible subscribers, in addition to increasing the network range [1,2].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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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.

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Section: Coherent Dwdm Transmissionsupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

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“…L-band broadband laser, multi-wavelength laser, fiber-based tunable laser, and mode-locked lasers are few demonstrations from literature exploiting the unique wide gain profile of Qdashes owing to their inherent dispersive size during growth process, with notable performance. This substantiates the promise offered by this material system addressing the future source requirements [10]- [12].…”

Section: Introductionsupporting

confidence: 77%

Tunable Two-Section InAs/InP Quantum-Dash Laser: Numerical Modeling and Analysis

Khan

2018

IEEE Photonics J.

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We report a multi-population rate-equation based numerical model for investigating broadband two-section InAs/InP quantum-dash laser. The model incorporates the quantum-wire-like nature of dashes along with the inhomogeneous broadening of the active region. Numerical results of light power-injection current and spectral characteristics at various absorber section lengths are shown to be in good agreement with the experimental results. Moreover, inhomogeneous broadening displayed a pivotal role in achieving large tunability from the monolithic two-section devices, in addition to demonstrating an extended lasing bandwidth. A blue-shift tuning window of 41.7 nm and bandwidth improvement of 18.5 nm is exhibited by 1000 μm cavity length device with largest active region inhomogeneity. In general, shorter 800-1000 μm and longer 2000 μm cavity length devices showed large wavelength tunability of 49 and 65 nm, respectively, in 1560-1640 nm wavelength region. This comprehensive analysis would enable design optimization of the tunable two-section devices that are considered potential key components in optical access networks.

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“…Furthermore, optical injection locking [9] have been employed to improve the visible laser modulation bandwidth and push the boundaries of data rate beyond 10 s of Gb/s with higher order modulation schemes [10]. In literature, two types of optical injection locking have been reported, namely, external injection locking (EIL) [11] and self-injection locking (SIL) [12]. EIL employs a high-quality master laser source to inject the optical power into the slave laser to lock a single longitudinal mode from its optical spectrum, thereby enhancing the modulation bandwidth and improving the performance to that of the master laser.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Self-Injection Locked Visible Laser Diodes for High Bit-Rate Visible Light Communication

et al. 2018

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We report on self-injection locking in InGaN/GaN (blue/green) and InGaP/AlGaInP (red) visible-light laser diodes. The free-space optical feedback path was accomplished via an external mirror. The effect of injection current, optical power injection ratio, and external cavity length on the spectral linewidth and modulation bandwidth of the lasers is investigated. Our results show that the laser performance was substantially improved. In particular, we achieved a significant increase of ∼57% (1.53-2.41 GHz) and ∼31% (1.72-2.26 GHz) in the modulation bandwidth, and ∼9 (1.0-0.11 nm) and ∼9 (0.63-0.07 nm) times reduction in spectral linewidth of the green and blue lasers, respectively. Consequently, side-mode-suppression-ratio was considerably increased in all the cases, reaching as high as ∼20 dB in self-injection locked blue laser diode, thus enabling a close to single-mode operation. This paper paves the way for attaining high-speed optical wireless communications by overcoming the challenges of limited modulation bandwidth and multimode operation of visible laser diodes with this simple scheme.

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Broadly Tunable Self-injection Locked InAs/InP Quantum-dash Laser Based Fiber/FSO/Hybrid Fiber-FSO Communication at 1610 nm

Cited by 23 publications

References 23 publications

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

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

Tunable Two-Section InAs/InP Quantum-Dash Laser: Numerical Modeling and Analysis

Investigation of Self-Injection Locked Visible Laser Diodes for High Bit-Rate Visible Light Communication

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