Journal Papers

Y. Ishizaka, S. Makino, T. Fujisawa, and K. Saitoh, “A metal-assisted silicon slot waveguide for highly sensitive gas detection,” IEEE Photonics Journal, vol. 9, no. 1, pp. 6800609-1-6800609-9, 2017. pdf
Y. Ishizaka, M. Nagai, T. Fujisawa, and K. Saitoh, “A photonic-plasmonic mode converter using mode-coupling-based polarization rotation for metal-inserted silicon platform,” IEICE Electronics Express, vol. 14 no. 2, pp. 20160989-1-20160989-10, 2017.
S. Makino, T. Sato, Y. Ishizaka, T. Fujisawa, and K. Saitoh, “Three-dimensional finite-element time-domain beam propagation method and its application to 1-D photonic crystal coupled resonator optical waveguide,” IEEE/OSA Journal of Lightwave Technology, vol.33, no. 18, pp. 3836-3842, 2015.
T. Sato, S. Makino, Y. Ishizaka, T. Fujisawa, and K. Saitoh, “A rigorous definition of nonlinear parameter  and effective area Aeff for photonic crystal optical waveguides,” Journal of the Optical Society of America B, vol. 32, no.6, pp. 1245-1251, 2015.
T. Sato, S. Makino, Y. Ishizaka, T. Fujisawa, and K. Saitoh, “Three-dimensional finite-element mode solver for nonlinear periodic optical waveguides and its application to photonic crystal waveguides,” IEEE/OSA Journal of Lightwave Technology, vol. 32, no. 21, pp. 3409-3417, 2014.
K. Saitoh, T. Uematsu, N. Hanzawa, Y. Ishizaka, K. Masumoto, T. Sakamoto, T. Matsui, K. Tsujikawa, and F. Yamamoto, “PLC-based LP11 mode rotator for mode-division multiplexing transmission,” Optics Express, vol. 22, no. 16, pp. 19117-19130, 2014.
T. Uematsu, T. Kitayama. Y. Ishizaka, K. Saitoh, “Ultra-broadband silicon-wire polarization beam combiner/splitter based on a wavelength insensitive coupler with a point-symmetrical configuration,” IEEE Photonics Journal, vol. 6, no. 1, pp. 4500108-1-4500108-8, 2014.
Y. Ishizaka, K. Saitoh, and M. Koshiba, “Transmission-efficient structures of bent and crossing silicon slot waveguides,” IEEE Photonics Journal, vol. 5, no. 5, pp. 6601809 -1-6601809-9, 2013.
S. Makino, Y. Ishizaka, K. Saitoh, and M. Koshiba, “Proposal of coupled ring resonator based on one-dimensional photonic crystal nanocavity,” IEEE/OSA Journal of Lightwave Technology, vol. 31, no. 15, pp. 2565-2569, 2013.
S. Makino, Y. Ishizaka, K. Saitoh, and M. Koshiba, “Slow-light-enhanced nonlinear characteristics in slot waveguides composed of photonic crystal nanobeam cavities,” IEEE Photonics Journal, vol. 5, no. 2700309-1-700309-9, 2013.
Y. Ishizaka, Y. Kawaguchi, K. Saitoh, and M. Koshiba, “Three-dimensional finite-element solutions for crossing slot-waveguides with finite core-height,” IEEE/OSA Journal of Lightwave Technology, vol. 30, no. 21, pp. 3394-3400, 2012.
T. Uematsu, Y. Ishizaka, Y. Kawaguchi, K. Saitoh, and M Koshiba, “Design of a compact two-mode multi/demultiplexer consisting of multi-mode interference waveguides and a wavelength insensitive phase shifter for mode-division multiplexing transmission,” IEEE/OSA Journal of Lightwave Technology, vol. 30, no. 15, pp. 2421-2426, 2012.
Y. Ishizaka, Y. Kawaguchi, K. Saitoh, and M. Koshiba, “Design of optical XOR, XNOR, NAND, and OR logic gates based on multi-mode interference waveguides for binary-phase-shift-keyed signal,” IEEE/OSA Journal of Lightwave Technology, vol. 29, no. 18, pp. 2836-2846, 2011.
Y. Ishizaka, Y. Kawaguchi, K. Saitoh, and M. Koshiba, “Design of ultra compact all-optical XOR and AND logic gates with low power consumption,” Optics Communications, vol. 284, no. 14, pp. 3528-3533, 2011.

International Conferences

Y. Kurosawa and Y. Ishizaka, “Evaluation of sensor sensitivity in Mach of Zehnder interferometers consisted metal-assisted Si3N4 slot waveguides,” The 8th International Symposium on Materials Science and Surface Technology, 2019.
Y. Kurosawa and Y. Ishizaka, “Evaluation of sensor sensitivity in metal-assisted silicon nitride slot waveguide,” The 7th International Symposium on Materials Science and Surface Technology, 2018.
Y. Yamashita, Y. Ishizaka, N. Hanzawa, T. Fujiswa, T. Sakamoto, T. Matsui, K. Tsujikawa, F. Yamamoto, K. Nakajima, and K. Saitoh, “Excitation of LP21b and LP02 modes with PLC-based tapered waveguide for mode-division multiplexing,” Proceedings of the OptoElectronics and Communications Conference and International Conferece on Photonics in Switching 2016 (OECC/PS2016), TuE3-4, 2016.
N. Hanzawa, K. Saitoh, T. Sakamoto, T. Matsui, K. Tsujikawa, T. Fujisawa, Y. Ishizaka, and F. Yamamoto, “Demonstration of PLC-based six-mode multiplexer for mode division multiplexing transmission,” Proceedings of the European Conference on Optical Communication (ECOC), Paper P.2.6, 2015.
Y. Ishizaka, M. Nagai, and K.Saitoh, “Strong light confinement in a metal-assisted silicon slot waveguide,” Proceedings of the OptoElectronics and Communications Conference and Australian Conference on Optical Fiber Technology (OECC/ACOFT 2014), pp. 13-15, 2014.
S. Makino, Y. Ishizaka, and K.Saitoh, “Investigation of nonlinear characteristics in CROW based on horizontally slotted nanobeam cavity,” Proceedings of the OptoElectronics and Communications Conference and Australian Conference on Optical Fiber Technology (OECC/ACOFT 2014), pp. 676-678, 2014.
T. Sato, S. Makino, Y. Ishizaka, and K.Saitoh, “Investigation of nonlinear characteristics in a 1-D slotted photonic crystal coupled resonator optical waveguide with modulated mode-gap,” Proceedings of the OptoElectronics and Communications Conference and Australian Conference on Optical Fiber Technology (OECC/ACOFT 2014), pp. 673-675, 2014.
T. Uematsu, N. Hanzawa, K. Saitoh, Y. Ishizaka, K. Masumoto, T. Sakamoto, T. Matsui, K. Tsujikawa, and F. Yamamoto, “PLC-type LP11 mode rotator with single-trench waveguide for mode-division multiplexing transmission”, Proceedings of the Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC), Th2A.52, 2014.
S. Makino, Y. Ishizaka, K. Saitoh, and M. Koshiba, “Structural dependence of nonlinear characteristics in coupled resonator optical waveguides based on slotted nanobeam cavities,” Proceedings of the Frontiers in Optics 2013/Laser Science XXIX (FiO/LS), FW4E.5, Orlando, USA, Oct. 2013.
Y. Ishizaka, K. Saitoh, and M. Koshiba, “Surface plasmon nanocavities composed of metallic wall and 1-D photonic crystal,” Proceedings of the IEEE Photonics Conference (IPC), pp. 627-628, Bellevue, USA, Sep. 2013.
Y. Ishizaka, K. Saitoh, and M. Koshiba, “Metallic wall-based plasmon nanocabities with 1-D photonic crystals,” Proceedings of the IEEE Photonics Society Summer Topical Meeting, pp. 58-59, Hawaii, USA, Jul. 2013.
S. Makino, Y. Ishizaka, K. Saitoh, and M. Koshiba, “A proposal of coupled resonator optical waveguides based on slotted nanobeam cavities,” Proceedings of the IEEE Photonics Society Summer Topical Meeting, pp. 46-47, Hawaii, USA, Jul. 2013.
S. Makino, Y. Ishizaka, K. Saitoh, and M. Koshiba, “Structural dependence of nonlinear characteristics in slot waveguides composed of photonic crystal nanobeam cavities,” Proceedings of the Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR), TuPI-4, Kyoto, Japan, Jun.-Jul. 2013.
M. Nagai, Y. Ishizaka, K. Saitoh, and M. Koshiba, “Propagation length and coupling characteristics of a hybrid plasmonic waveguide with a uniform silica layer,” Proceedings of the Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR), TuPI-16, Kyoto, Japan, Jun.-Jul. 2013.
Y. Ishizaka, Y. Kawaguchi, K. Saitoh, and M. Koshiba, “Transmission characteristics of crossing slot-waveguides with finite core-height,” Proceedings of the OptoElectronics and Communications Conference (OECC), pp. 887-888, Busan, Korea, Jul. 2012.
Y. Ishizaka, Y. Kawaguchi, K. Saitoh, and M. Koshiba, “An architecture proposal of reconfigurable optical logic gates for BPSK signal,” Proceedings of the OptoElectronics and Communications Conference (OECC), pp.699-700, Kaohsiung, Taiwan, Jul. 2011.
Y. Ishizaka, Y. Kawaguchi, K. Saitoh, and M. Koshiba, “Design of all-optical XOR and AND logic gates based on multi-mode interference devices,” Proceedings of the International Conference on Advanced Optoelectronics & Lasers (CAOL), pp. 53-55, Sevastopol, Ukraine, Sep. 2010.