Design of Four-Core Uncoupled Multicore Fiber for Next-Generation Inter-Data Center Networks
DOI:
https://doi.org/10.13052/jmm1550-4646.1821Keywords:
Inter-data centers, Single-mode fiber, Single-mode multi-core fibers, Inter-core crosstalk.Abstract
The increasing demands within and between the data centers used for data traffic has required. Efficient links are important to data center applications for supporting the unlimited demand. Transmission capacity of single-mode fiber (SMF) is limited by fiber nonlinearity which prevents the increasing transmission power and finite amplifier bandwidth. Single-mode multi-core fibers (SM-MCFs) that are expected to overcome the current limitation of optical communication capacity. However, the inter-core crosstalk still has an effect on SM-MCF, which can limit the transmission of the inter-data center. In this paper, the design of four-core uncoupled multicore fiber is discussed for next generation inter-data center networks in order to support the unlimited use of data traffic in the future. The objective of this paper is to determine the appropriate range of core radius and core pitch, which are taken into consideration to reduce the inter-core crosstalk inside the optical fiber. These parameters can be able to improve various constraints to achieve the best multi-core fibers design. From the simulation concerned with the inter-core crosstalk, the experiment results show that the range of core pitch is at 47.5 μm to 50 μm and the range of core radius starts from 4.5 μm to 5.5 μm, that can achieve with crosstalk lower than – 30 dB/100 km for the future inter-data center networks.
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References
Cisco, ‘Cisco Global Cloud Index 2015-2020’, White Paper, pp. 1-41, 2016.
K. Saitoh, S. Matsuo, “Multicore Fiber Technology”, In Proceeding of the Optical Fiber Communications Conference and Exhibition, pp. 22, 2015.
T. Hayashi, “Multi-core Fiber for High-capacity Spatially-multiplexed Transmission”, Ph.D. Thesis, Hokkaido University, Sapporo, Japan, 2013.
T. Hayashi, Y. Tamura, T. Hasegawa and T. Nakanishi, “Coupled Multi-Core Optical Fiber Suitable for Long-Haul Transmission”, SEI Technical Review, Number 85, Oct., 2017.
T. Hayashi, T. Nakanishi, “Multi-core Optical Fibers for the Next-Generation Communications”, SEI Technical Review, Number 86, Apr., 2018.
R.-J. Essiambre, G. Kramer, P.J. Winzer, G.J. Foschini, and B. Goebel, “Capacity Limits of Optical Fiber Networks”, Journal of Lightwave Technology, 28(4): 662–701, 2010.
T. Morioka, “New Generation Optical Infrastructure Technologies EXAT Initiative Towards 2020 and beyond”, In Proceeding of the Opto-Electronics and Communications Conference, pp. 13–17, Jul., 2009.
H. Kubota, and T. Morioka, “Few-mode Optical Fiber for Mode Division Multiplexing”, Optical Fiber Technology, 17: 490–494, 2011.
T. Hayashi, “Uncoupled Multi-core Fiber Enhancing Signal-to-Noise Ratio”, Optics Express, 20(26): B94–B103, Nov., 2012.
J. K. Perin, A. Shastri and J. M. Kahn, “Data Center Link Beyond 100 Gbit/s per Wavelength”’, Optical Fiber Technology, 44: 69–85, Aug., 2018.
R. Urata, H. Liu, X. Zhou and A. Vahdat, “Datacenter Interconnect and Networking: From Evolution to Holistic Revolution”, In Proceeding of the Optical Fiber Communications Conference, W3G.1, 2017.
T. Matsui, “Design of 125 um Cladding Multi-core Fiber with Full-band Compatibility to Conventional Single-mode Fiber”, In Proceeding of the European Conference on Optical Communication, 2015.
T. Hayashi, “End-to-End Multi-core Fibre Transmission Link Enabled by Silicon Photonics Transceiver with Grating Coupler Array”, In Proceeding of the European Conference on Optical Communication, 2017.
D. Kumar, R. Ranjan, “Estimation of Crosstalk in Homogeneous Multicore Fiber for High Core Count under Limited Cladding Diameter”, In Proceeding of the Conference on Information and Communication Technology, Nov., 2017.
G. Rademacher, “Crosstalk Dynamic in Multi-core Fibers”, Optics Express, 25(10): 12020–12028, May., 2017.
M. Koshiba, K. Saitoh and Y. Kokubun, “Heterogeneous Multi-core Fibers: Proposal and Design Principle”, IEICE Electronics Express, 6(2): 98–103, Jan., 2009.
T. Hayashi, T. Nagashima, O. Shimakawa, T. Sasaki and E. Sasaoka, “Crosstalk Variation of Multi-core Fibre Due to Fibre Bend”, In Proceeding of the European Conference on Optical Communication, Torino, 2010.
T. Hayashi, T. Taru, O. Shimakawa, T. Sasaki, and E. Sasaoka, “Design and Fabrication of Ultralow Crosstalk and Low-Loss Multi-core Fiber”, Optics Express, 19(17): 16576–16592, Aug., 2011.
D. Kumar, R. Ranjan, “Crosstalk Analysis in Homogeneous 12-core Multicore Fiber with Different Core Layouts for LP01 and LP02 Modes”, In Proceeding of the IEEE Region 10 International Conference, pp. 2305–2408, 2017.
K. Okamoto, “Fundamentals of Optical Waveguides”, 2nd edition, Academic Press, San Diego, USA, 2006.
