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A novel optical fiber grating vector bending sensor head is demonstrated. The sensor head is composed by two cascaded 6° tilted long period fiber gratings, which are separated by a distance $d$ . The asymmetric characteristics of the proposed sensor originate from two tilted long period gratings with angles placed oppositely and asymmetric exposure of the CO2 laser pulses. Two selected dips shift...
An auxiliary graph (AG) is designed to address traffic grooming under dynamic traffic scenario in spatial division multiplexing enabled elastic optical networks (SDM-EON). Various traffic grooming policies are achieved by adjusting the edge weights of AG, and evaluated through simulation in terms of spectrum efficiency and inter-core crosstalk. Numeric results show that the proposed SDM grooming reduces...
Cluster software defined optical networking controller (CSC) paradigm is exploited for multi-dimensional resource defragmentation (MDRD) in spatial division multiplexing enabled elastic optical networks. Experimental results show that spectral and spatial resources can be reorganized fast and effectively with cluster control technology.
We evaluate static ligthpath blocking performance under the different transponder (TP) bank numbers and bank scales, to optimize the TP-bank scale (i.e., number of transponders provisioned) in colorless and directionless reconfigurable optical add/drop multiplexers (CD-ROADMs), while maintaining similar blocking performance as that for a pure contentionless ROADM with sufficient TPs. In this paper,...
Master-slave switching nodes with three planes for power grid communications in substation based on software defined network are proposed. A FPGA-based control module and its relative management software as well as an experimental optical switching node are developed, and built, which have verified the switch, control and routing management for the optical switching node. The proposed scheme can realize...
The present work investigates reflectivity of reflective surface for optical fiber hydrogen sensor. High reflectivity and low light scattering of multilayer electrolyte reflective membrane in two optical paths could increase signal to noise ratio of hydrogen sensor, and provide longer operational lifetime for hydrogen sensor. When the multi-layer electrolyte total reflection membrane was made up of...
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