A Bidirectional FSO Communication Employing Phase Modulation Scheme and Remotely Injection-Locked DFB LD

Huang, Xu-Hong; Li, Chung-Yi; Lu, Hai‐Han; Chou, Cing-Ru; Hsia, Hsin-Mao; Chen, Yi-Hao

doi:10.1109/jlt.2020.3005714

Cited by 22 publications

(2 citation statements)

References 34 publications

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“…It enables free space reuse and better spectrum utilization, leading to higher transmission rates and capacities. Furthermore, constructing a bidirectional OWC system with phase modulation and remotely injection-locked distributed feedback laser diode (LD) was shown to be practicable 8 . Nevertheless, it presents challenges in terms of converting phase modulation to intensity modulation using remotely injection-locked distributed feedback LD.…”

Section: Introductionmentioning

confidence: 99%

5G wavelength-division-multiplexing-based bidirectional optical wireless communication system with signal remodulation employing cascaded reflective semiconductor optical amplifiers

Lu,

Li,

Huang

et al. 2024

Commun Eng

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Compared with previous generations, fifth-generation communications can provide faster download and upload speeds and support a greater number of connected devices. Integrating fifth-generation signals with optical wireless communication systems provides promising ways to afford higher transmission rates and faster wireless connectivity. Here we report a fifth-generation wavelength-division-multiplexing-based bidirectional optical wireless communication system with signal remodulation employing cascaded reflective semiconductor optical amplifiers to effectively remove the downstream data for uplink transmission. It shows a fifth-generation wavelength-division-multiplexing-based bidirectional optical wireless communication system using four wavelengths for communication. The uplink performance is substantially enhanced by using two reflective semiconductor optical amplifiers to remove the downstream data. The system achieves an aggregate transmission rate of 36.4 Gbit/s for both downlink and uplink transmissions over a 100-m optical wireless link. This demonstrated fifth-generation wavelength-division-multiplexing-based bidirectional optical wireless communication system employing cascaded reflective semiconductor optical amplifiers holds great potential for enhancing fifth-generation advanced communication capabilities.

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Section: Introductionmentioning

confidence: 99%

5G wavelength-division-multiplexing-based bidirectional optical wireless communication system with signal remodulation employing cascaded reflective semiconductor optical amplifiers

Lu,

Li,

Huang

et al. 2024

Commun Eng

Self Cite

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“…A WDM-PAM4 scheme and an SLM-based beam tracking technique provided an 800 Gb/s transmission capacity and addressed laser beam misalignment due to target device movement [18]. A bidirectional FSO system achieved a 25 Gb/s 25 GHz PAM4 passband signal in the downlink and a 25 Gb/s NRZ baseband signal in the uplink over 600 m free-space transmission [19]. A bidirectional 256 Gb/s PAM4 fiber-FSO convergence system using polarization-multiplexed injection-locked VCSELs was constructed [20].…”

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confidence: 99%

PAM4-Modulated 2-Micron Band for Enhanced Indoor Optical Communications: Experimental Evaluation

Yang,

Cai,

Song

et al. 2024

Preprint

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This research explores the application of PAM4 modulation to optical signals in the 2-micron wavelength band for indoor optical communication. Experiments conducted in a simulated atmospheric turbulence environment demonstrated a BER of 10-5 for the 2-μm laser carrier with PAM4, surpassing the forward error correction threshold. Power loss comparisons to a back-to-back setup showed minimal degradation under various turbulence levels, with losses of 1.80 dB, 1.91 dB, 2.09 dB, and 2.55 dB for non-turbulent, weak-turbulent, moderate-turbulent, and strong-turbulent conditions, respectively. The system's sensitivity was measured at -7.69 dBm, emphasizing its effectiveness in detecting low-power signals. OptiSystem simulations indicated that PAM4 necessitates a higher optical OSNR than NRZ, suggesting the necessity for sophisticated signal processing techniques for systems operating in the 2-μm band. The study's results contribute to the body of knowledge on high-bandwidth optical communication and suggest future research avenues aimed at enhancing system performance while maintaining cost-effectiveness.

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Nonlinearity optimization in FSO transport system and generation of 24-GHz MW signal based on OADM scheme and external modulation technique

et al. 2021

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A Bidirectional FSO Communication Employing Phase Modulation Scheme and Remotely Injection-Locked DFB LD

Cited by 22 publications

References 34 publications

5G wavelength-division-multiplexing-based bidirectional optical wireless communication system with signal remodulation employing cascaded reflective semiconductor optical amplifiers

5G wavelength-division-multiplexing-based bidirectional optical wireless communication system with signal remodulation employing cascaded reflective semiconductor optical amplifiers

PAM4-Modulated 2-Micron Band for Enhanced Indoor Optical Communications: Experimental Evaluation

Nonlinearity optimization in FSO transport system and generation of 24-GHz MW signal based on OADM scheme and external modulation technique

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