Reconfigurable high-speed optical fibre networks: Optical wavelength conversion and switching using VCSELs to eliminate channel collisions

Boiyo, D. Kiboi; Chabata, T.V.; Kipnoo, E.K. Rotich; Gamatham, R. R. G.; Leitch, A.W.R.; Gibbon, T. B.

doi:10.1016/j.yofte.2016.11.001

Cited by 5 publications

(1 citation statement)

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“…In the past, the DWDM optical network promised to be a solution for the traffic growth: dividing the available transmission bandwidth of an optical fibre into nonoverlapping wavelengths with a fixed grid spectrum channel spacing typically ITU-T 50 or 100 GHz [1]. ese networks offer the possibility to establish wavelength connections at a fixed bit rate, i.e., 10,40, and recently 100 Gb/s at 50 GHz channel spacing [2]. e bandwidth request of today's network end user requires more customized services and more differentiated demands with different prices [3].…”

Section: Introductionmentioning

confidence: 99%

All-Optical VCSEL-to-VCSEL Injection Based on Cross Gain Modulation for Routing in Multinode Flexible Spectrum Optimization in Optical Fibre Transmission Links

Dlamini

Isoe

Boiyo

et al. 2019

International Journal of Optics

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In this paper, we experimentally present a novel, all-optical spectral efficient vertical-cavity surface-emitting laser- (VCSEL-) based technique for routing and spectrum assignment in optical networks. Exploiting all optical VCSEL-to-VCSEL injection to attain cross gain modulation, the optical transmitter is optimized for optical transmission paths to assure quality of service by overcoming blockage for differentiated bandwidth demands during network congestion incidences. A 10 Gbps directly modulated 1549 nm master VCSEL is optically injected into the 1549 nm side modes of a 1550 nm slave VCSEL. The Shannon limit is considered for higher transmission rates with the problem decomposed into degraded routing and spectrum assignment and chromatic dispersion in the optical transmission link penalties. In this work, the proposed technique achieved a 1.3 dB penalty for transmission over a 25 km G.655 nonzero dispersion-shifted single-mode optical fibre, a value within the transmission media and optical system characteristics of 3 dB as recommended by the International Telecommunication Union-Telecommunication (ITU-T). The number of transceivers, switches, and optical transmission links in the network was reduced, increasing the number of satisfied bandwidth requests, thus optimizing the spectral resource utilization.

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Section: Introductionmentioning

confidence: 99%