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http://idr.niser.ac.in:8080/jspui/handle/123456789/939| Title: | Channel Bragg-plasmon coupled waveguide |
| Authors: | Das, Ritwick |
| Issue Date: | 23-Aug-2011 |
| Publisher: | Proceedings of SPIE - The International Society for Optical Engineering |
| Citation: | Das, R., Jha, R., & Srivastava, T. (2010, December 29). Channel Bragg-plasmon coupled waveguide. In S. K. Khijwania, B. D. Gupta, B. P. Pal, & A. Sharma (Eds.), Photonics 2010: Tenth International Conference on Fiber Optics and Photonics. |
| Abstract: | We present a detailed analysis and recipe for designing a channel Bragg-plasmon coupled waveguide where the intermodal coupling between a bandgap-guided mode and surface plasmon mode substantially modifies the phase-velocity dispersion slope of supermodes. This leads to appreciably large group-velocity-dispersion with peak value of ≈4.33x104 ps/km-nm close to the optical communication band as well as interaction bandwidth of about 765 pm for 1 cm long waveguide. We also found that bandgap guided Bragg modes exhibit stronger dispersive features than the plasmon modes around ~ 1.50 μm which is exactly opposite to what is usually observed in visible region. The impact of waveguide parameters such as channel width etc. on mode-coupling mechanism is also studied with significant emphasis on the propagation loss suffered by the supermodes of the structure. |
| URI: | https://doi.org/10.1117/12.897719 http://idr.niser.ac.in:8080/jspui/handle/123456789/939 |
| Appears in Collections: | Conference Papers |
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