Analysis of all-optically tunable functionalities in subwavelength periodic structures by the Fourier modal method

Subhajit Bej; Jani Tervo; Jorge Francés; Yuri P. Svirko; Jari Turunen

doi:10.1117/12.2227871

3 May 2016 Analysis of all-optically tunable functionalities in subwavelength periodic structures by the Fourier modal method

Subhajit Bej, Jani Tervo, Jorge Francés, Yuri P. Svirko, Jari Turunen

Author Affiliations +

Proceedings Volume 9889, Optical Modelling and Design IV; 988906 (2016) https://doi.org/10.1117/12.2227871
Event: SPIE Photonics Europe, 2016, Brussels, Belgium

Abstract

We propose the nonlinear Fourier Modal Method (FMM) [J. Opt. Soc. Am. B 31, 2371 (2014)] as a convenient and versatile numerical tool for the design and analysis of grating based next generation all-optical devices. Here, we include several numerical examples where the FMM is used to simulate all-optically tunable functionalities in sub-wavelength periodic structures. At first, we numerically investigate a 1-D periodic nonlinear binary grating with amorphous TiO₂. We plot the diffraction efficiency in the transmitted orders against the structure depth for normally incident plane wave. Change in diffraction efficiencies for different incident field amplitudes are evident from the plots. We verify the accuracy of our implementation by comparing our results with the results obtained with the nonlinear Split Field-Finite Difference Time Domain (SF-FDTD) method. Next we repeat the same experiment with vertically standing amorphous Titanium dioxide (TiO₂) nanowire arrays grown on top of quartz which are periodic in two mutually perpendicular directions and examine the efficiencies in the direct transmitted light for different incident field amplitudes. Our third example includes analysis of a form birefringent linear grating with Kerr medium. With FMM we demonstrate that the birefringence of such a structure can be tuned by all-optical means. As a final example, we design a narrow band Guided Mode Resonance Filter (GMRF). Numerical experiments based on the nonlinear FMM reveal that the spectral tunability of such a filter can be obtained by all-optical means.

Citation Download Citation

Subhajit Bej, Jani Tervo, Jorge Francés, Yuri P. Svirko, and Jari Turunen "Analysis of all-optically tunable functionalities in subwavelength periodic structures by the Fourier modal method", Proc. SPIE 9889, Optical Modelling and Design IV, 988906 (3 May 2016); https://doi.org/10.1117/12.2227871

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Diffraction gratings

Titanium dioxide

Birefringence

Nonlinear optics

Nanowires

Refractive index

Kerr effect

Show All Keywords

Keywords/Phrases

Search In:

Publication Years