volume | PIER Journals

Abstract

There has been a presented modal approach for analyzing the scattering of plane waves that are incident on penetrable gratings with metallic fins lined over both exterior surfaces of each conducting bar to create flanged apertures, which altogether is covered on both sides by multiple dielectric layers. The new degrees of freedom afforded by the special complex geometry offer ways to improve the capabilities of various applications such as beam deflectors, resolution of spectroscopic gratings, grating couplers, and grating pulse compression/decompression, as shall be demonstrated herein for the latter two. All of these entail higher-order diffraction modes, which are advantageously studied by the aforementioned analytical tool. Outcomes of measurements on a fabricated prototype that agree well with expectations from theory are also presented.

1. Ng Mou Kehn, M. and W. Y. Lai, "Modal analysis of gratings with conducting strip-loaded bars and sandwiched between multiple dielectric layers," IEEE Trans. Antennas Propag., Vol. 68, No. 6, 5027-5032, Jun. 2020.

2. Tamir, T. and H. L. Bertoni, "Lateral displacement of optical beams at multilayered and periodic structures," J. Opt. Soc. Amer., Vol. 61, 1397-1413, 1971.

3. Harris, J. H., R. K. Winn, and D. G. Dalgoutte, "Theory and design of periodic couplers," Appl. Opt., Vol. 11, 2234-2241, 1972.

4. Peng, S. T., T. Tamir, and H. L. Bertoni, "Leaky wave analysis of optical periodic couplers," Electron. Lett., Vol. 9, 150-152, 1973.

5. Kneubuhl, F., "Diffraction grating spectroscopy," Appl. Opt., Vol. 8, 505-519, 1969.

6. Kiang, M. H., J. T. Nee, K. Y. Lau, and R. S. Muller, "Surface-micromachined diffraction gratings for scanning spectroscopic applications," Proceedings of International Solid State Sensors and Actuators Conference (Transducers'97), Vol. 1, 343-345, Chicago, IL, USA, 1997.

7. Ge, J., D. L. McDavitt, J. L. Bernecker, S. Miller, D. R. Ciarlo, and P. J. Kuzmenko, "Development of silicon grisms and immersion gratings for high-resolution infrared spectroscopy," Proc. SPIE 4485, Optical Spectroscopic Techniques, Remote Sensing, and Instrumentation for Atmospheric and Space Research IV, Jan. 30, 2002, https://doi.org/10.1117/12.454275.

8. Treacy, E. B., "Optical pulse compression with diffraction gratings," IEEE J. Quantum Electron., Vol. 5, No. 9, 454-458, Sep. 1969.

9. Heritage, J. P., R. N. Thurston, W. J. Tomlinson, A. M. Weiner, and R. H. Stolen, "Spectral windowing of frequency-modulated optical pulses in a grating compressor," Appl. Phys. Lett., Vol. 47, No. 2, 87-89, Jul. 1985.

10. Martinez, O. E., "3000 times grating compressor with positive group velocity dispersion: application to fiber compensation in 1.3–1.6 μm region," IEEE J. Quantum Electron., Vol. 23, No. 1, 59-64, Jan. 1987.

11. Gomes, A. S. L., A. S. Gouveia-Neto, and J. R. Taylor, "Optical fibre-grating pulse compressors," Opt. & Quant. Electronics, Vol. 20, 95-112, 1988.

12. Zhang, T., M. Yonemura, and Y. Kato, "An array-grating compressor for high-power chirped-pulse amplification lasers," Opt. Commun., Vol. 145, 367-376, Jan. 1998.

13. Jia, W., C. Zhou, J. Feng, and E. Dai, "Miniature pulse compressor of deep-etched gratings," Appl. Opt., Vol. 47, No. 32, 6058-6063, Nov. 2008.

14. Deguzman, P. C. and G. P. Nordin, "Stacked subwavelength gratings as circular polarization filters," Appl. Opt., Vol. 40, 5731-5737, 2001.

15. Bird, G. R. and M. Parrish, "The wire grid as a near-infrared polarizer," J. Opt. Soc. Am., Vol. 50, 886-891, 1960.

16. Weber, T., S. Kroker, T. Kasebier, E.-B. Kley, and A. Tunnermann, "Silicon wire grid polarizer for ultraviolet applications," Appl. Opt., Vol. 53, 8140-8144, 2014.

17. Kane, S. and J. Squier, "Grating compensation of third-order material dispersion in the normal dispersion regime: Sub-100-fs chirped-pulse amplification using a fiber stretcher and grating-pair compressor," IEEE J. Quantum Electron., Vol. 31, No. 11, 2052-2057, Nov. 1995.

18. Gibson, E. A., D. M. Gaudiosi, H. C. Kapteyn, and R. Jimenez, "Efficient reflection grisms for pulse compression and dispersion compensation of femtosecond pulses," Opt. Lett., Vol. 31, No. 22, 3363-3365, Nov. 2006.

Prof. Malcolm Ng Mou Kehn