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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2026
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| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/2602.07416 |
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| _version_ | 1866914313822797824 |
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| author | Das, Tiyas Lara, Anuj P. Roy, Samudra Agrawal, Govind P. |
| author_facet | Das, Tiyas Lara, Anuj P. Roy, Samudra Agrawal, Govind P. |
| contents | We study theoretically the spatial evolution of optical beams inside a graded-index fiber exhibiting saturable nonlinearity. Utilizing an approach based on the variational principle, we identify the existence of bistable spatial solitons inside such a nonlinear medium, whose stability, analyzed through a linear stability analysis, is due to the saturating nature of the nonlinearity. Spatial solitons adhere to a specific amplitude-width relationship. Any deviation from this relationship leads to oscillating-type solutions with a period that increases with saturation level of the nonlinearity. Theoretically calculated values of this period agree well with numerical findings. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_07416 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Optical beam propagation inside a graded-index fiber with saturable nonlinearity Das, Tiyas Lara, Anuj P. Roy, Samudra Agrawal, Govind P. Optics We study theoretically the spatial evolution of optical beams inside a graded-index fiber exhibiting saturable nonlinearity. Utilizing an approach based on the variational principle, we identify the existence of bistable spatial solitons inside such a nonlinear medium, whose stability, analyzed through a linear stability analysis, is due to the saturating nature of the nonlinearity. Spatial solitons adhere to a specific amplitude-width relationship. Any deviation from this relationship leads to oscillating-type solutions with a period that increases with saturation level of the nonlinearity. Theoretically calculated values of this period agree well with numerical findings. |
| title | Optical beam propagation inside a graded-index fiber with saturable nonlinearity |
| topic | Optics |
| url | https://arxiv.org/abs/2602.07416 |