Mode coupling effects in ring-core fibres for space-division multiplexing systems
An optical fibre with weak mode coupling is desirable for future ultra-high capacity space-division multiplexing (SDM) systems because mode coupling in an optical fibre results in extrinsic loss of the fibre and crosstalk between guided optical modes. To study the feasibility of a ring-core fibre (R...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Published: |
Institute of Electrical and Electronics Engineers
2016
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| _version_ | 1826302628848467968 |
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| author | Jin, X Gomez, A Shi, K Thomsen, B Feng, F Gordon, G Wilkinson, T Jung, Y Kang, Q Barua, P Sahu, J Alam, S Richardson, D O'Brien, D Payne, F |
| author_facet | Jin, X Gomez, A Shi, K Thomsen, B Feng, F Gordon, G Wilkinson, T Jung, Y Kang, Q Barua, P Sahu, J Alam, S Richardson, D O'Brien, D Payne, F |
| author_sort | Jin, X |
| collection | OXFORD |
| description | An optical fibre with weak mode coupling is desirable for future ultra-high capacity space-division multiplexing (SDM) systems because mode coupling in an optical fibre results in extrinsic loss of the fibre and crosstalk between guided optical modes. To study the feasibility of a ring-core fibre (RCF) for SDM systems, in this paper, we investigate the mode coupling in the RCF supporting 5 or 7 guided mode groups (MGs) at a wavelength of 1550nm. For this purpose, the coupled mode/power theory (CMT/CPT) with identified spatial power spectrum of random perturbations of fibre axis is used to estimate the bend loss/crosstalk of the RCF due to microbending. It is shown that, based on the identified parameters for the spatial power spectrum in the 5/7-MG RCF, the estimated bend loss/crosstalk of the RCF agrees well with experimental results. In addition, the impact of the gradient parameter α and refractive index contrast Δ of the fibre refractive index profile on bend loss and crosstalk of the RCF is explored. Simulation results indicate that the Δ instead of the α significantly affects bend loss and crosstalk of the RCF. The magnitude improvement in bend loss by increasing the Δ is dependent on the spatial power spectrum. |
| first_indexed | 2024-03-07T05:50:29Z |
| format | Journal article |
| id | oxford-uuid:e8b1c01a-e328-4b99-8c20-96df1fa5c076 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:50:29Z |
| publishDate | 2016 |
| publisher | Institute of Electrical and Electronics Engineers |
| record_format | dspace |
| spelling | oxford-uuid:e8b1c01a-e328-4b99-8c20-96df1fa5c0762022-03-27T10:48:48ZMode coupling effects in ring-core fibres for space-division multiplexing systemsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e8b1c01a-e328-4b99-8c20-96df1fa5c076Symplectic Elements at OxfordInstitute of Electrical and Electronics Engineers2016Jin, XGomez, AShi, KThomsen, BFeng, FGordon, GWilkinson, TJung, YKang, QBarua, PSahu, JAlam, SRichardson, DO'Brien, DPayne, FAn optical fibre with weak mode coupling is desirable for future ultra-high capacity space-division multiplexing (SDM) systems because mode coupling in an optical fibre results in extrinsic loss of the fibre and crosstalk between guided optical modes. To study the feasibility of a ring-core fibre (RCF) for SDM systems, in this paper, we investigate the mode coupling in the RCF supporting 5 or 7 guided mode groups (MGs) at a wavelength of 1550nm. For this purpose, the coupled mode/power theory (CMT/CPT) with identified spatial power spectrum of random perturbations of fibre axis is used to estimate the bend loss/crosstalk of the RCF due to microbending. It is shown that, based on the identified parameters for the spatial power spectrum in the 5/7-MG RCF, the estimated bend loss/crosstalk of the RCF agrees well with experimental results. In addition, the impact of the gradient parameter α and refractive index contrast Δ of the fibre refractive index profile on bend loss and crosstalk of the RCF is explored. Simulation results indicate that the Δ instead of the α significantly affects bend loss and crosstalk of the RCF. The magnitude improvement in bend loss by increasing the Δ is dependent on the spatial power spectrum. |
| spellingShingle | Jin, X Gomez, A Shi, K Thomsen, B Feng, F Gordon, G Wilkinson, T Jung, Y Kang, Q Barua, P Sahu, J Alam, S Richardson, D O'Brien, D Payne, F Mode coupling effects in ring-core fibres for space-division multiplexing systems |
| title | Mode coupling effects in ring-core fibres for space-division multiplexing systems |
| title_full | Mode coupling effects in ring-core fibres for space-division multiplexing systems |
| title_fullStr | Mode coupling effects in ring-core fibres for space-division multiplexing systems |
| title_full_unstemmed | Mode coupling effects in ring-core fibres for space-division multiplexing systems |
| title_short | Mode coupling effects in ring-core fibres for space-division multiplexing systems |
| title_sort | mode coupling effects in ring core fibres for space division multiplexing systems |
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