Takanori Sato, Ph.D.

Education

Professional Experience

Honors and Awards

Research Grants and Projects

Apr. 2019 - Mar. 2022	Japan Society for the Promotion of Science: Grant-in-Aid for Early-Career Scientists (KAKENHI)
Apr. 2017 - Mar. 2019	Japan Society for the Promotion of Science: Grant-in-Aid for JSPS Fellows (KAKENHI)

Research Interests

Association Memberships

Publications

Journal (peer-reviewed)

[] T. Sato and A. Enokihara, “Ultrasmall design of a universal linear circuit based on microring resonators,” Optics Express, OSA, vol. 27, no. 23, pp. 33005–33010, Nov. 2019. [Abstract]
[] K. Yoshida, T. Fujisawa, T. Sato, and K. Saitoh, “Optimum index profile of few-mode coupled multicore fibers for reducing the group delay spread,” Electronics Express, Optics Express, OSA, vol. 27, no. 11, pp. 16281–16295, May 2019. [Abstract]
[] Y. Sawada, T. Fujisawa, T. Sato, and K. Saitoh, “CMOS-compatible Si-wire polarization beam splitter based on wavelength-insensitive coupler,” Electronics Express, IEICE, vol. 16, no. 8, p. 20181126, Feb. 2019. [Abstract]
[] T. Sato, T. Fujisawa, and K. Saitoh, “All-optical diode suppressing broadband backward transmission using single- and four-port photonic crystal cavities,” Photonics Journal, IEEE, vol. 11, no. 1, p. 4900214, Feb. 2019. [Abstract]
[] M. Akie, T. Fujisawa, T. Sato, M. Arai, and K. Saitoh, “GeSn/SiGeSn multiple-quantum-well electroabsorption modulator with taper coupler for mid-infrared Ge-on-Si platform,” J. Sel. Top. Quantum Electron., IEEE, vol. 24, no. 6, pp. 3400208-1–3400208-8, Nov. 2018. [Abstract]
[] S. Nakano, T. Fujisawa, T. Sato, and K. Saitoh, “Beam propagation analysis of optical activity and circular dichroism in helically twisted photonic crystal fiber,” Jpn. J. Appl. Phys., vol. 57, no. 8S2, pp. 08PF06-1–08PF06-5, July 2018. [Abstract]
[] Y. Sawada, T. Sato, T. Fujisawa, and K. Saitoh, “Development of the wavefront matching method based on the 3-D finite-element method and its application to Si-wire mode converters,” J. Lightw. Technol., IEEE, vol. 37, no. 17, pp. 3652–3659, Jun. 2018. [Abstract]
[] T. Sato, T. Fujisawa, and K. Saitoh, “Design of a high-forward-transmission all-optical diode based on cascaded side-coupled photonic crystal cavities,” J. Opt. Soc. Am. B, OSA, vol. 34, no. 12, pp. 2493–2500, Dec. 2017. [Abstract]
[] K. Saitoh, T. Fujisawa, and T. Sato, “Coiling size dependence of group delay spread in coupled multicore fibers without intentional twisting,” J. Lightw. Technol., IEEE, vol. 35, no. 20, pp. 4559–4566, Oct. 2017. [Abstract]
[] T. Fujisawa, T. Sato, and K. Saitoh, “Full-Vector finite-element beam propagation method for helicoidal waveguides and its application to twisted photonic crystal fiber,” J. Lightw. Technol., IEEE, vol. 35, no. 14, pp. 2894–2901, July 2017. [Abstract]; T. Fujisawa, T. Sato, and K. Saitoh, Errata to “Full-Vector finite-element beam propagation method for helicoidal waveguides and its application to twisted photonic crystal fiber,” J. Lightw. Technol., IEEE, vol. 36, no. 18, pp. 4211–4212, Aug. 2018. [Abstract]
[] T. Fujisawa, S. Makino, T. Sato, and K. Saitoh, “Low-loss, compact, and fabrication-tolerant Si-wire 90° waveguide bend using clothoid and normal curves for large scale photonic integrated circuits,” Optics Express, OSA, vol. 25, no. 8, pp. 9150–9159, Apr. 2017. [Abstract]
[] T. Sato, S. Makino, T. Fujisawa, and K. Saitoh, “Design of a reflection-suppressed all-optical diode based on asymmetric L-shaped nonlinear photonic crystal cavity,” J. Opt. Soc. Am. B, OSA, vol. 33, no. 1, pp. 54–61, Jan. 2016. [Abstract] (author's accepted manuscript)
[] 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,” J. Lightw. Technol., IEEE, vol. 33, no. 18, pp. 3836–3842, Aug. 2015. [Abstract]
[] T. Sato, S. Makino, Y. Ishizaka, T. Fujisawa, and K. Saitoh, “A rigorous definition of nonlinear parameter γ and effective area Aeff for photonic crystal optical waveguides,” J. Opt. Soc. Am. B, OSA, vol. 32, no. 6, pp. 1245–1251, Jun. 2015. [Abstract] (author's accepted manuscript)
[] 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,” J. Lightw. Technol., IEEE, vol. 32, no. 21, pp. 4011–4019, Nov. 2014. [Abstract]

Conference proceedings (peer-reviewed)

[] K. Nakamura, T. Sato, T. Fujisawa, and K. Saitoh, “Nonreciprocity enhancement of graphene-on-Si waveguide using one-dimensional photonic crystal,” The 24th Microoptics Conference (MOC 2019), Paper P-48, Toyama, Japan, Nov. 17-20, 2019. [Online abstract is unavalilable]
[] T. Sato, T. Fujisawa, and K. Saitoh, “Ultra-robust design of mode (de)multiplexer based on asymmetrical directional coupler using wire and one-side rib waveguides,” 24th Optoelectronics and Communications Conference / International Conference on Photonics in Switching and Computing 2019 (OECC/PSC 2019), Paper. TuE2-3, Fukuoka, Japan, July 7-11, 2019. [Abstract]
[] K. Nishimura, T. Sato, T. Fujisawa, Y. Amma, K. Takenaga, K. Aikawa, and K. Saitoh, “Cladding diameter dependence of inter-core crosstalk in heterogeneous multicore fibers,” 24th Optoelectronics and Communications Conference / International Conference on Photonics in Switching and Computing 2019 (OECC/PSC 2019), Paper. ThG3-2, Fukuoka, Japan, July 7-11, 2019. [Abstract]
[] Y. Yasui, K. Yoshida, T. Sato, T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, and K. Saitoh, “Simple GDS estimation method for coupled multicore fibers with various core layouts,” International Symposium on Extremely Advanced Transmission Technologies (EXAT 2019), Paper P-19, Ise, Japan, May 29-31, 2019. [Online abstract is unavalilable]
[] Y. Sawada, T. Fujisawa, T. Sato, and K. Saitoh, “First experimental demonstration of wavefront-matching-method-designed silicon mode converters,” Optical Fiber Communication Conference (OFC), Paper W3B.4, San Diego, USA, Mar. 3-7, 2019. [Abstract]
[] J. Takano, T. Fujisawa, T. Sato, Y. Sawada, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, and K. Saitoh, “Low-loss and fabrication-tolerant Si four-wavelength multiplexer using higher-order mode for 100/400GbE,” Optical Fiber Communication Conference (OFC), Paper Tu2J.2, San Diego, USA, Mar. 3-7, 2019. [Abstract]
[] T. Sato, K. Yoshida, T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, and K. Saitoh, “Suppression of group-delay spread in coupled two-LP-mode four-core fiber,” IEEE Photonics Conference (IPC 2018), Paper MA4.2, Reston, USA, Sept. 30-Oct. 4, 2018. [Abstract]
[] T. Sato, T. Fujisawa, and K. Saitoh, “Novel all-optical diode based on single-port and four-port photonic crystal cavities,” OptoElectronics and Communications Conference (OECC 2018), Paper 4D2-2, Jeju, Korea, July 2-6, 2018. [Abstract (Coming soon)]
[] J. Takano, T. Sato, Y. Sawada, T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, and K. Saitoh, “Proposal of Si four-wavelength multiplexer using higher-order mode for 100GbE,” OptoElectronics and Communications Conference (OECC 2018), Paper 4E2-4, Jeju, Korea, July 2-6, 2018. [Abstract (Coming soon)]
[] Y. Sawada, T. Sato, T. Fujisawa, and K. Saitoh, “A broadband silicon two-mode multiplexer designed by wavefront matching method,” OptoElectronics and Communications Conference (OECC 2018), Paper 5E4-4, Jeju, Korea, July 2-6, 2018. [Abstract (Coming soon)]
[] S. Nakano, T. Fujisawa, T. Sato, and K. Saitoh, “Beam propagation analysis of optical activity and circular dichroism in helically twisted photonic crystal fiber,” The 22nd Microoptics Conference (MOC 2017), Paper P-16, Tokyo, Japan, Nov. 19-22, 2017. [Abstract]
[] K. Yoshida, T. Fujisawa, T. Sato, and K. Saitoh, “Group delay spread analysis of few-mode, coupled 3-core fibres: Optimum index profile and maximum transmission distance for strong coupling regime,” European Conference on Optical Communications (ECOC 2017), Paper P1.SC1.8, Gothenburg, Sweden, Sept. 17-21, 2017. [Abstract]
[] T. Sato, T. Fujisawa, and K. Saitoh, “High-forward-transmission all-optical diode based on cascaded L3 photonic crystal cavities,” The 24th Congress of International Commission for Optics (ICO-24), Paper Th3E-03, Tokyo, Japan, Aug. 21-25, 2017. [Online abstract is unavalilable]
[] K. Saitoh, T. Fujisawa, and T. Sato, “Design and analysis of weakly- and strongly-coupled multicore fibers,” Photonic Networks and Devices in Proceedings Advanced Photonics 2017 (IPR, NOMA, Sensors, Networks, SPPCom, PS), Paper NeTu2B.5, New Orleans, USA, Jul. 24-27, 2017. [Abstract]
[] M. Akie, T. Sato, M. Arai, T. Fujisawa, and K. Saitoh, “A compact and low-loss GeSn electroabsorption modulator using vertical multimode interference for mid-infrared Ge-on-Si platform,” 2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR 2017), Singapore, Jul. 31-Aug. 4, 2017. [Abstract]
[] T. Sato, M. Akie, M. Arai, T. Fujisawa, and K. Saitoh, “Highly efficient GeSn electroabsorprtion modulator using higher-order-mode for mid-infrared Ge-on-Si platform,” Conference on Lasers and Electro-Optics (CLEO 2017), Paper JW2A.110, San Jose, USA, May 14-19, 2017. [Abstract]
[] S. Makino, M. Suga, T. Sato, T. Fujisawa, and K. Saitoh, “Ultimately low-loss and compact Si wire 90° waveguide bend composed of clothoid and normal curves for dense optical interconnect PICs,” Optical Fiber Communication Conference (OFC 2017), Paper Th3E.2, Los Angeles, USA, Mar. 19-23, 2017. [Abstract]
[] T. Sato, S. Makino, T. Fujisawa, and K. Saitoh, “A simple design method of reflection-suppressed photonic crystal cavity with asymmetric waveguides,” IEEE Photonics Conference (IPC 2016), pp. 91–92, Hawaii, USA, Oct. 2-6, 2016. [Abstract]
[] 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,” in Optical Fibre Technology, 2014 OptoElectronics and Communication Conference and Australian Conference on (OECC/ACOFT 2014), pp. 673–675, Melbourne, Australia, Jul. 6-10, 2014. [Abstract]