A novel full duplex 16 Gbps SCM/ASK radio over fiber WDM-PON sharing wavelength for up- and down-link using bidirectional reflective filter

Singh, Harpreet; Singh, Maninder; Singh, Rajandeep

doi:10.1016/j.ijleo.2014.01.064

Cited by 12 publications

(4 citation statements)

References 7 publications

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“…phase modulator being driven by a sinusoidal signal genera tor at frequency of 20 GHz, results into two out of phase adjacent bits, so obtained spectrum has a suppressed peak. CSRZ scheme exhibits higher tolerance against chromatic dispersion and self-phase modulation (SPM) than conventional RZ and NRZ schemes and narrower optical spectrum [19,23]. This transmitter exploits two concatenated MZMs.…”

Section: Theoretical and Practical Modelling Of Carrier Suppressed Re...mentioning

confidence: 99%

Implementation and analysis of 32 channel CSRZ DWDM system at narrow channel spacing

Dhadhal¹,

Thummar²,

Mishra³

2024

Preprint

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In this work, we use CSRZ modulation at 32 x 40 Gbps DWDM long-haul communication system under the effect of non-linearities using the dispersion compensation technique. The proposed system performance is measured at 30 GHz, 40 GHz, and 50 GHz channel spacing in terms of BER, Q-factor, and eye-diagram for the varied launched laser power ranging from −5 dBm to 10 dBm of CW laser array and 6000km transmission distances. We use three EDFA amplifiers for signal amplification to boost signal power. By optimizing the system parameters, we use pre and post-Gaussian filters at the transmission distance of 6000 km is achieved for a BER value of 1.4306E-010 with a corresponding Q-factor value of 6.30611 at 5 dBm input power at 30GHz channel spacing and without the Gaussian filter, we achieve Q factor is 4.18952 and BER is 1.35038E-05 at -5 dBm power level at 50GHz channel spacing.

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Section: Theoretical and Practical Modelling Of Carrier Suppressed Re...mentioning

confidence: 99%

Implementation and analysis of 32 channel CSRZ DWDM system at narrow channel spacing

Dhadhal¹,

Thummar²,

Mishra³

2024

Preprint

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“…Sindhubala and Vijayalakshmi (2017) realized a VLC system considering background noise over a 20 m range at a 20 Kbps traffic rate. Singh et al (2014) illustrated a bidirectional 16×1 Gbps PON utilizing subcarrier multiplexing and amplitude shift keying over a 25 km range. To the best of our knowledge, no work has yet focused on a bidirectional OWC system using VCSEL lasers for both downlink and uplink directions in long-haul 5G applications.…”

Section: Introductionmentioning

confidence: 99%

Design and investigation of Symmetric Bidirectional VCSEL Laser incorporated Extensive Reach OWC System using considering channel impairments for beyond 5G application

Kumari,

Mishra

2024

Preprint

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Optical wireless communication (OWC) is recognized as a promising technology for future fifth generation (5G) networks. However, limited research efforts have been dedicated to the development of symmetric and bidirectional OWC systems using vertical cavity surface emitting lasers (VCSELs). In this study, we design and investigate a bidirectional 4×10 Gbps VCSEL-incorporated OWC system with an extensive reach, taking into account channel impairments. VCSELs offer high operating power and high reliability, making them suitable for this application. Simulation analyses have been conducted to evaluate the system performance in both the downlink and uplink directions, considering various factors such as noise, geometric losses, and attenuation losses. The results indicate that a maximum OWC range of over 130 km in the downlink direction and 128 km in the uplink direction can be achieved with a link loss of 0.001 dB. The system can tolerate a maximum link attenuation of 2.25 dB/km in the downlink direction and 2.2 dB/km in the uplink direction while maintaining a bit error rate (BER) within the acceptable limit of 10^-9. Additionally, the system demonstrates robust performance at a maximum operating temperature of 348K for VCSELs over a 10 km range at a data rate of 40/40 Gbps. The results further indicate that the maximum values of signal, noise, gain, noise figure, and optical signal-to-noise ratio (OSNR) are-69.68 dBm,-87.65 dBm,-21.14 dB, 21.14 dB, and 82.13 dB, respectively, at a total input power of-69.61 dBm. Comparative analysis with existing studies highlights the superiority of this work over previous efforts, demonstrating significant improvements in system performance and range. This research underscores the potential of bidirectional OWC systems using VCSELs for enhancing future 5G networks.

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“…The values of the optimal switching voltage and BER are high (8 V, 10 -16, or 10 -17 ). Articles [21][22][23][24][25][26] analyze SCM/WDM RoF systems' performance using OSSB modulation but have not yet compared its BER with the DSB modulation technique. Besides, these articles did not mention the effects of ASE noise when using EDFA amplifiers as well as the effects of FWM nonlinear effects and channel spacing in SCM/WDM RoF systems.…”

Section: Introductionmentioning

confidence: 99%

Improvements on the performance of subcarrier multiplexing/wavelength division multiplexing based radio over fiber system

Tran

Bui

2021

IJECE

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Radio over fiber (RoF) techniques are good candidates to create the backbone of the next generation of wireless networks. Many parameters affect RoF communications such as amplified spontaneous emission noise (ASE), four-wave mixing nonlinearity (FWM), the modulation, channel spacing, switching voltage, and phase shifter. In this paper, we propose an improved model of RoF communication systems using subcarrier multiplexing/wavelength division multiplexing (SCM/WDM) technique with unequal channel spacing and 1-km Erbium-doped fiber amplifier (EDFA). Simulation results confirmed that we could obtain the lowest bit error rate and noises when the EDFA is placed at 1 km from the transmitter by using optical single-sideband (OSSB) modulation at frequencies 193.1 THz, 193.2 THz, 193.35 THz, and 193.6 THz.

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A novel full duplex 16 Gbps SCM/ASK radio over fiber WDM-PON sharing wavelength for up- and down-link using bidirectional reflective filter

Cited by 12 publications

References 7 publications

Implementation and analysis of 32 channel CSRZ DWDM system at narrow channel spacing

Implementation and analysis of 32 channel CSRZ DWDM system at narrow channel spacing

Design and investigation of Symmetric Bidirectional VCSEL Laser incorporated Extensive Reach OWC System using considering channel impairments for beyond 5G application

Improvements on the performance of subcarrier multiplexing/wavelength division multiplexing based radio over fiber system

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