Highly Utilized Fiber Plant with Extended Reach and High Splitting Ratio Based on AWG and EDFA Characteristics

Syuhaimi, Mohammad

doi:10.4218/etrij.13.0112.0793

Cited by 5 publications

(4 citation statements)

References 20 publications

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“…Examples of several LROA schemes can be found in [22][23][24][25][26][27][28][29][30][31][32]. [30]. In this proposed architecture, the capacity was increased as a result of increasing the splitting ratio, which helps improve the cost sharing.…”

Section: Long-reach Optical Access (Lroa)mentioning

confidence: 99%

Long-reach Optical Access (LROA): A Cost-effective Promising Approach

Mohamed¹

2019

COM

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To compensate the decrease in its revenue, most telecom operators have adopted similar strategy which is to provide faster Internet with low cost to its customers. Studies suggested that providing faster Internet with low cost can be achieved by reducing the cost of building next-generation access network. Among the various technologies introduced for next-generation access, long-reach optical access LROA is considered the largest candidate. This is due to the anticipated cost effectiveness of this technology. In LROA, more users can be supported over a common optical component (e.g., a transmitter, a fiber, or probably both), i.e., small number of entities is employed in the access network for service provisioning, which is considered as an improvement in the cost-sharing concept. Our objective in this paper is to verify the cost-effectiveness of this technology. To this end, a statistical-based cost comparison was conducted. The comparison was between the currently deployed passive optical networks (PONs), i.e., the Broad band PON (B-PON [G. 983]), the Ethernet PON (E-PON [IEEE802.3ah]), and the gigabit PON (G-PON [ITU-T G. 984]) and one of the LROA architectures proposed in the literature. The comparison process confirmed that the LROA requires less cost and cost per subscriber as compared with the currently deployed PONs.

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Section: Long-reach Optical Access (Lroa)mentioning

confidence: 99%

Long-reach Optical Access (LROA): A Cost-effective Promising Approach

Mohamed¹

2019

COM

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“…Several options including the WDM-PONs (Kani, 2010;Grobe and Elbers, 2008), hybrid TDM/WDM-PONs (Hyun et al, 2010), FiWi (Ghazisaidi and Maier, 2011;Tsagklas and Pavlidou, 2011), Advanced Modulation Techniques (AMTs) (Kamijoh et al, 2009;Chang et al, 2009), TDM-Based LR-OANs ( Van de Voorde et al, 2000;Shea and Mitchell, 2007b), TDM/CWDM-Based LR-OANs and TDM/DWDM-Based LR-OANs (Talli and Townsend, 2006;Shea and Mitchell, 2007c;Jung et al, 2012;Syuhaimi et al, 2013) were reviewed. Although many of these proposed architectures are interesting from the technical perspective, the cost, bandwidth per user and the number of accommodated subscribers remain the dominant factors for commercial success.…”

Section: Discussionmentioning

confidence: 99%

“…While the reach and the split size was limited by the insufficient saturated WDM signal gain of the Bi-EDFA, a theoretical investigation in that study showed that a further increase in the reach and/or split can be obtained by optimizing the Bi-EDF length and pumping conditions. Mohammad Syuhaimi and Ibrahim Mohamed proposed a hybrid Time-Division Multiplexing (TDM)/Dense Wavelength-Division Multiplexing (DWDM) scheme in (Syuhaimi et al, 2013) to implement a cost-effective and scalable LongReach Optical Access Network (LR-OAN). The proposed architecture shown in Fig.…”

Section: Tdm/dwdm-based Long-reach Optical Access Network (Tdm/dwdm-mentioning

confidence: 99%

Long-Reach Optical Access Networks (Lr-Oans): A Promising Candidate for Future Optical Access

Mohamed¹,

Ab-Rahman²

2014

American Journal of Applied Sciences

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The ever-increasing demand for broader bandwidth per user, which results from the continuous development of new bandwidth-hungry services and applications, creates the motivation to upgrade the currently deployed Time-Division Multiplexing Passive Optical Networks (TDM-PONs) to NextGeneration Optical Access Networks (NG-OANs). Beside the need for more bandwidth per user, a further extension in the range and an increase in the split ratio are highly desirable in PONs. These additional requirements can be achieved by adopting so-called Long-Reach Optical Access Networks (LR-OANs). LR-OANs offer a promising solution that ensures a significant number of users can be supported over a longer range. Moreover, they introduce a cost-effective approach in which both the access and metro segments of the telecommunication network are combined into one backhaul segment, which results in the consolidation of many central offices into one trunk-exchange. This cost-effective approach gave us the motivation to provide a comprehensive survey on the LR-OANs. In this study, we first provide a brief review of different potential technologies, proposed for next-generation optical access. We then provide a review of different stat-of-the-art LR-OAN architectures including opportunities and challenges in each one. A comparison among them based on key network specification is also provided.

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“…To overcome this limitation, different architectures have been proposed in the literature to create a next-generation optical access network (Grobe and Elbers, 2008;Kani, 2010;Kazovsky et al, 2011) based on either Wavelength-Division Multiplexing (WDM) or hybrid TDM/WDM technologies. In one of our studies (Syuhaimi and Mohamed, 2013), we proposed a hybrid TDM/DWDM-Based Long-Reach Optical Access Network (LR-OAN) scheme involving a two stage design. The design was based on a study of the characteristics of different optical components; including AWGs, Erbium-Doped Fiber Amplifiers (EDFAs) and Power Splitters (PSs) and the possibility of integrate these components together in one configuration to develop a hybrid TDM/DWDM scheme.…”

Section: Introductionmentioning

confidence: 99%

Analytical Analysis of In-Band Crosstalk, Out-of-Band Crosstalk and GVD-Based Power Penalties in DWDM and TDM/DWDM-PONS

Mohamed

Ab-Rahman

2015

Journal of Computer Science

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In addition to the ever-increasing demand for broader bandwidth per user, which results from the continuous development of new bandwidthhungry services and applications, the consequent upgrade from the currently deployed Time-Division Multiplexing Passive Optical Networks (TDMPONs) to Next-Generation Optical Access Networks (NG-OANs) has become inevitable. Different architectures for creating a NG-OAN have been proposed in the literature. Among those architectures, the DWDM and TDM/DWDM-Based OANs are very promising candidates. They were mainly proposed to exploit the large wavelength counts available in the fibre (its virtual unlimited bandwidth) to achieve a significant increase in the system capacity. Moreover, they allow coexistence in an open access environment among different network operators. In this study, we first analyze the impact of in-band crosstalk, out-of-band crosstalk to evaluate the performance of the Arrayed Waveguide Grating (AWG). The reason to focus on the AWG is due to this optical device is used almost in all DWDM and TDM/WDM-PONs. We then turn our attention to analyze the impact of group velocity dispersion GVD to estimate the maximum allowable bit rate for optical transmission without the need for using a Dispersion Management Technique (DMT) and/or a Forward Error Correction Technique (FECT). The analysis was performed using Matlab software (The Math works, Inc., Natick, MA, USA) and confirms that the in-band crosstalk has a stronger effect than the out-of-band crosstalk because its noise floor is reached at a lower crosstalk noise and with fewer crosstalk components. The in-band crosstalk noise should be kept below -37 dB and -34 dB to maintain a power penalty of less than 1 dB if 15 and 7 in-band crosstalk components are considered, respectively. The out-of-band crosstalk noise should be kept below -20.3 dB and -17.18 dB to maintain a power penalty of less than 1 dB if 240 and 56 out-of-band crosstalk components are considered, respectively. It was observed that the GVD noise floor is reached at a shorter fiber length as the bit rate increases and it was confirmed that a significant improvement in which the GVD noise floor is reached at longer fiber can be achieved if an externally modulated, small spectral-width source is used when a bit rate of 622 Mbps, 1 Gps, or 2.5 Gbps is used. However, a dispersion management technique becomes necessary if the bit rate increases to 10 Gbps or more.

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Highly Utilized Fiber Plant with Extended Reach and High Splitting Ratio Based on AWG and EDFA Characteristics

Cited by 5 publications

References 20 publications

Long-reach Optical Access (LROA): A Cost-effective Promising Approach

Long-reach Optical Access (LROA): A Cost-effective Promising Approach

Long-Reach Optical Access Networks (Lr-Oans): A Promising Candidate for Future Optical Access

Analytical Analysis of In-Band Crosstalk, Out-of-Band Crosstalk and GVD-Based Power Penalties in DWDM and TDM/DWDM-PONS

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