Opto-Mechanical Interactions in Multi-Core Optical Fibers and Their Applications
| Autor: | Salvador Sales, Hilel Hagai Diamandi, Javier Madrigal, Gil Bashan, David Barrera, Yosef London, Avi Zadok, Arik Bergman |
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| Rok vydání: | 2020 |
| Předmět: |
Optical fiber
Materials science 09.- Desarrollar infraestructuras resilientes promover la industrialización inclusiva y sostenible y fomentar la innovación Physics::Optics FOS: Physical sciences Optical power 02 engineering and technology Applied Physics (physics.app-ph) Opto-mechanics 01 natural sciences Multiplexing law.invention 010309 optics 020210 optoelectronics & photonics law Brillouin scattering Multi-core fibers 0103 physical sciences TEORIA DE LA SEÑAL Y COMUNICACIONES 0202 electrical engineering electronic engineering information engineering Stimulated Brillouin scattering Electrical and Electronic Engineering Electrostriction business.industry Optical fiber sensors Acoustic wave Physics - Applied Physics Nonlinear fiber-optics Cladding (fiber optics) Atomic and Molecular Physics and Optics Opto-electronic oscillators Optoelectronics Direct coupling business Physics - Optics Optics (physics.optics) |
| Zdroj: | IEEE Journal of Selected Topics in Quantum Electronics RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname RiuNet: Repositorio Institucional de la Universitat Politécnica de Valéncia Universitat Politècnica de València (UPV) |
| ISSN: | 1077-260X |
| DOI: | 10.1109/jstqe.2019.2958933 |
| Popis: | [EN] Optical fibers containing multiple cores are being developed towards capacity enhancement in space-division multiplexed optical communication networks. In many cases, the fibers are designed for negligible direct coupling of optical power among the cores. The cores remain, however, embedded in a single, mechanically-unified cladding. Elastic (or acoustic) modes supported by the fiber cladding geometry are in overlap with multiple cores. Acoustic waves may be stimulated by light in any core through electrostriction. Once excited, the acoustic waves may induce photo-elastic perturbations to optical waves in other cores as well. Such opto-mechanical coupling gives rise to inter-core cross-phase modulation effects, even when direct optical crosstalk is very weak. The cross-phase modulation spectrum reaches hundreds of megahertz frequencies. It may consist of discrete and narrow peaks, or may become quasi-continuous, depending on the geometric layout. The magnitude of the effect at the resonance frequencies is comparable with that of intra-core cross-phase modulation due to Kerr nonlinearity. Two potential applications are demonstrated: single-frequency opto-electronic oscillators that do not require radio-frequency electrical filters, and point-sensing of liquids outside the cladding of multi-core fibers, where light cannot reach. This work was supported in part by a Starter Grant from the European Research Council (ERC) under Grant H2020-ERC-2015-STG 679228 (L-SID), in part by the Israeli Ministry of Science and Technology under Grant 61047, and in part by the Spanish Ministry of Economy and Competitiveness under the DIMENSION TEC2017 88029-R Project. H. H. Diamandi was supported by the Azrieli Foundation for the award of an Azrieli Fellowship. The work of J. Madrigal was supported by Universitat Politecnica de Valencia scholarship PAID-01-18. The work of D. Barrera was supported by Spanish MICINN fellowship IJCI-2017-32476. |
| Databáze: | OpenAIRE |
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