OAM Modes in Optical Fibers for Next Generation Space Division Multiplexing (SDM) Systems

Due to the renewed demand on data bandwidth imposed by the upcoming capacity crunch, optical communication (research and industry) community has oriented their effort to space division multiplexing (SDM) and particularly to mode division multiplexing (MDM). This is based on separate/independent and orthogonal spatial modes of optical fiber as data carriers along optical fiber. Orbital Angular Momentum (OAM) is one of the variants of MDM that showed promising features including the efficient enhancement of capacity transmission from Tbit to Pbit and substantial improvement of spectral efficiency up to hundreds (bs-1 Hz-1). In this chapter, we review the potentials of harnessing SDM as a promising solution for next generation global communications systems. We focus on different SDM approaches and we address specifically the MDM (different modes in optical fiber). Finally, we highlight the recent main works and achievements that have been conducted (in last decade) in OAM-MDM over optical fibers. We focus on main R&D activities incorporating specialty fibers that have been proposed, designed and demonstrating in order to handle appropriates OAM modes.

Download Full-text

On the Performance of Protected and Online Routing Enabled Translucent Space Division Multiplexing-Based Elastic Optical Networks

Journal of Optical Communications ◽

10.1515/joc-2018-0187 ◽

2019 ◽

Vol 0 (0) ◽

Cited By ~ 1

Author(s):

Sridhar Iyer

Keyword(s):

Optical Networks ◽

Blocking Probability ◽

Optical Network ◽

Routing Algorithm ◽

Modulation Formats ◽

Space Division Multiplexing ◽

Space Division ◽

Spatial Modes ◽

Variability Level ◽

Network Topologies

AbstractIn this article, we focus on the optimization of lightpath routing in an online Space Division Multiplexing-based Elastic Optical Network (SDM-b-EON) which is protected by the dedicated route protection (DRP) strategy. In view of the aforementioned, the Online Protection and Routing Algorithm with Regeneration (OPaRAwR) method is proposed which (i) protects the lightpaths through DRP, (ii) accounts for the presence of transceivers in the network, and (iii) ensures the routing of translucent lightpaths through the spectral super-channels over the spatial modes links. In regard to regeneration, we investigate two scenarios which differ in their regeneration variability level in addition to the adjustment of modulation formats (MFs) as per the transmission route characteristics. Extensive simulation experiments are conducted considering realistic transmission reach values and two realistic network topologies. The obtained simulation results demonstrate that the proposed OPaRAwR method significantly outperforms various reference techniques in terms of bandwidth blocking probability (BwBP). In addition, the results also show that significant benefits can be obtained in regard to the utilization of resources (spectrum and transceivers) with much lesser BwBP when the regeneration is conducted with complete flexibility and MF conversion is also permitted at every node of the SDM-b-EON.

Download Full-text

Large Capacity Optical Communications by Optical Fibers for Space Division Multiplexing

IEICE Communications Society Magazine ◽

10.1587/bplus.13.166 ◽

2019 ◽

Vol 13 (3) ◽

pp. 166-176

Author(s):

Kunimasa Saitoh

Keyword(s):

Optical Fibers ◽

Optical Communications ◽

Large Capacity ◽

Space Division Multiplexing ◽

Space Division

Download Full-text

Autocompensating Measurement-Device-Independent quantum cryptography in few-mode optical fibers

EPJ Web of Conferences ◽

10.1051/epjconf/202023809002 ◽

2020 ◽

Vol 238 ◽

pp. 09002

Author(s):

Jesús Liñares-Beiras ◽

Xesús Prieto-Blanco ◽

Daniel Balado ◽

Gabriel M. Carral

Keyword(s):

Optical Fiber ◽

Quantum Cryptography ◽

Optical Fibers ◽

Measurement Device ◽

Optical Components ◽

Spatial Modes ◽

Fiber Modes ◽

Measurement Device Independent

We present an autocompensating quantum cryptography technique for Measurement-Device-Independent quantum cryptography devices with different kind of optical fiber modes. We center our study on collinear spatial modes in few-mode optical fibers by using both fiber and micro-optical components. We also indicate how the obtained results can be easily extended to polarization modes in monomode optical fibers and spatial codirectional modes in multicore optical fibers.

Download Full-text

Space-division multiplexing for the next generation of fiber-wireless access networks

2015 17th International Conference on Transparent Optical Networks (ICTON) ◽

10.1109/icton.2015.7193320 ◽

2015 ◽

Author(s):

Jose Manuel Galve ◽

Ivana Gasulla ◽

Jose Capmany

Keyword(s):

Access Networks ◽

Wireless Access ◽

Wireless Access Networks ◽

Next Generation ◽

Space Division Multiplexing ◽

Space Division

Download Full-text

Effects of Mode Dispersion on Cross-phase modulation on Mode Division Multiplexed Optical Fibers

10.36227/techrxiv.17155547 ◽

2021 ◽

Author(s):

Reinhardt Rading

Keyword(s):

Optical Fibers ◽

Phase Modulation ◽

Single Mode ◽

Cross Phase Modulation ◽

Space Division Multiplexing ◽

Space Division ◽

Mode Division Multiplexing ◽

Mode Dispersion ◽

Linear Effects

<div>The concept of mode division multiplexing also known as space division multiplexing was introduced as an alternative to combat the approaching capacity crunch in single mode fibers. Just like single mode fibers, space division multiplexed fibers will experience non-linearity at a different level and studies have shown that some linear effects can be beneficial in combating the nonlinear interference. This study aims to identify the benefits accrued when these linear effects are implemented by exploring the already existing models defined in the literature.</div>

Download Full-text