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Writing Bragg Gratings in Multicore Fibers
Published on: April 20, 2016
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Flexible nanofiber-coupled hybrid plasmonic Bragg grating.
Optics Express
|May 4, 2016
Summary
We developed a novel hybrid plasmonic Bragg grating using nanofibers and metal strips. This device exhibits strong Bragg reflection for TM polarization, enabling efficient light manipulation for optical applications.
Area of Science:
- Photonics
- Plasmonics
- Nanotechnology
Background:
- Plasmonic Bragg gratings are crucial for controlling light propagation.
- Hybrid structures offer enhanced optical properties.
- Nanofiber-device integration presents fabrication challenges.
Purpose of the Study:
- To design and characterize a hybrid plasmonic Bragg grating.
- To investigate the influence of TM polarization on Bragg reflection.
- To analyze the impact of device parameters on spectral performance.
Main Methods:
- Numerical simulations of transmission and reflection spectra.
- Fabrication of a prototype device by coupling a nanofiber with metal strips.
- Experimental characterization of spectral properties and parameter dependence.
Main Results:
- Hybrid plasmonic modes significantly enhance TM polarization Bragg reflection.
- Simulations revealed excitation of fundamental and first-order TM modes.
- Experimental results showed a 15 nm bandwidth and >30 dB rejection for the main peak.
Conclusions:
- The hybrid plasmonic Bragg grating demonstrates efficient light reflection for TM modes.
- Device performance is tunable via nanofiber radius, alignment, and coupling length.
- This hybrid structure holds promise for advanced photonic devices.
