| Presentation | 2015-02-19 A Theoretical Analysis of DMD reducton for step-index FMF using index differential term of the wave-equation Naofumi KITSUNEZAKI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In a step-indexed few mode fiber using LP_<11> modes, there exists differential modal delay between different modes in LP_<01> modes even in an ideal fiber, because LP_<11> modes are not exactlly degenerated. In step-indexed fiber, LP_<11> modes are degenerated, because of the zeroth order approximation of the relative index difference, which is called weakly guided approximation, of the the wave equation, which is derived from the Maxwell's equation, and of the eigen equation connecting core and clad regions. In our research, we take into account of the first orde of the relative index difference to calculate DMD between LP_<11> mode, and show that we can cancel this DMD by tuning the differential term of the index. We also argue that the variation of DMD when parameters for tuning are varied from the idel values. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Differential modal difference / LP_<11> mode degeneration breaking / perturbation approximation |
| Paper # | OCS2014-111,OPE2014-217 |
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| Conference Information | |
| Committee | OCS |
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| Conference Date | 2015/2/12(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Optical Communication Systems (OCS) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Theoretical Analysis of DMD reducton for step-index FMF using index differential term of the wave-equation |
| Sub Title (in English) | |
| Keyword(1) | Differential modal difference |
| Keyword(2) | LP_<11> mode degeneration breaking |
| Keyword(3) | perturbation approximation |
| 1st Author's Name | Naofumi KITSUNEZAKI |
| 1st Author's Affiliation | Department of Integrated Information Technology, College of Science and Engineering, Aoyama Gauin University() |
| Date | 2015-02-19 |
| Paper # | OCS2014-111,OPE2014-217 |
| Volume (vol) | vol.114 |
| Number (no) | 451 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |