Nonlinear Coherent Directional Coupler: Coupled Mode Theory and BPM Simulation
Finite difference beam propagation method is an accurate numerical procedure, used here to explore the switching dynamics of a nonlinear coherent directional coupler. The coupling lengths derived from this simulation are compared with coupled mode theories. BPM results for the critical power follow...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2012-01-01
|
| Series: | International Journal of Optics |
| Online Access: | http://dx.doi.org/10.1155/2012/173250 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850163543569072128 |
|---|---|
| author | Dharmadas Kumbhakar |
| author_facet | Dharmadas Kumbhakar |
| author_sort | Dharmadas Kumbhakar |
| collection | DOAJ |
| description | Finite difference beam propagation method is an accurate numerical procedure, used here to explore the switching dynamics of a nonlinear coherent directional coupler. The coupling lengths derived from this simulation are compared with coupled mode theories. BPM results for the critical power follow the trend of the coupled mode theories, but it lies in between two coupled mode theories. Coupled mode theory is sensitive to numerical approximations whereas BPM results practically do not depend on grid size and longitudinal step size. Effect of coupling-region-width and core-width variations on critical power and coupling length is studied using BPM to look at the aspects of optical power-switch design. |
| format | Article |
| id | doaj-art-e89319a01aa94d70ab463a932029e478 |
| institution | OA Journals |
| issn | 1687-9384 1687-9392 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Optics |
| spelling | doaj-art-e89319a01aa94d70ab463a932029e4782025-08-20T02:22:15ZengWileyInternational Journal of Optics1687-93841687-93922012-01-01201210.1155/2012/173250173250Nonlinear Coherent Directional Coupler: Coupled Mode Theory and BPM SimulationDharmadas Kumbhakar0Department of Electronics and Communication Engineering, Asansol Engineering College, Asansol, West Bengal 713305, IndiaFinite difference beam propagation method is an accurate numerical procedure, used here to explore the switching dynamics of a nonlinear coherent directional coupler. The coupling lengths derived from this simulation are compared with coupled mode theories. BPM results for the critical power follow the trend of the coupled mode theories, but it lies in between two coupled mode theories. Coupled mode theory is sensitive to numerical approximations whereas BPM results practically do not depend on grid size and longitudinal step size. Effect of coupling-region-width and core-width variations on critical power and coupling length is studied using BPM to look at the aspects of optical power-switch design.http://dx.doi.org/10.1155/2012/173250 |
| spellingShingle | Dharmadas Kumbhakar Nonlinear Coherent Directional Coupler: Coupled Mode Theory and BPM Simulation International Journal of Optics |
| title | Nonlinear Coherent Directional Coupler: Coupled Mode Theory and BPM Simulation |
| title_full | Nonlinear Coherent Directional Coupler: Coupled Mode Theory and BPM Simulation |
| title_fullStr | Nonlinear Coherent Directional Coupler: Coupled Mode Theory and BPM Simulation |
| title_full_unstemmed | Nonlinear Coherent Directional Coupler: Coupled Mode Theory and BPM Simulation |
| title_short | Nonlinear Coherent Directional Coupler: Coupled Mode Theory and BPM Simulation |
| title_sort | nonlinear coherent directional coupler coupled mode theory and bpm simulation |
| url | http://dx.doi.org/10.1155/2012/173250 |
| work_keys_str_mv | AT dharmadaskumbhakar nonlinearcoherentdirectionalcouplercoupledmodetheoryandbpmsimulation |