Publications

Journals

[1] T. Chinggungval and H. Yokoi, “Design and feasibility of modular design for the

    electro-optical waveguide for customization and fabrication improvement”: Trans. 

    JIEP, Vol. 18, 2025.

[2] R. Khun-in, Y. Usuda, Y. Jiraraksopakun, A. Bhatranand, and H. Yokoi, “Resin Made 

    Long-Period Fiber Grating Structure for Tunable Optical Filter inside Single-Mode 

    Fiber”: Key Engineering Materials, Vol. 861, 2020.

[3] R. Khun-in, Y. Usuda, Y. Jiraraksopakun, A. Bhatranand, and H. Yokoi, “Coupled  

    mode characteristics from the perturbation of 3D printed long-period fiber grating 

    devices”: Photonic Sensors, Vol. 10, 2020.

[4] S. Choowitsakunlert, T. Kobashigawa, N. Hosoya, R. Silapunt, and H. Yokoi,

    “Temperature-insensitive design of waveguide isolator employing nonreciprocal guided-

    radiation mode conversion”: Jpn. J. Appl. Phys., Vol. 57, 2018.

[5] S. Choowitsakunlert, K. Takagiwa, T. Kobashigawa, N. Hosoya, R. Silapunt, and H. Yokoi, 

    “Photosensitive adhesive bonding process of magnetooptic waveguides with Si guiding 

    layer for optical nonreciprocal devices”: Jpn. J. Appl. Phys., Vol. 57, 2018.

Conferences

[1] A. Komiyama, Y. Koike, and H. Yokoi, “Linear regression analysis of super 

     microplastics using probe Raman spectrometer”: 30th OptoElectronics and

     Communications Conference, July 2025.

[2] T. Murano, R. Watanabe, S. Shirai, and H. Yokoi, “Transmission characteristics

     of mechanically-induced long-period fiber grating with buffer material beneath

     optical fiber”: 29th OptoElectronics and Communications Conference, July 2024.

[3] H. Imamura, A. Komiyama, Y. Koike, and H. Yokoi, “Fabrication of optical waveguides 

with microfluidic channels for analysis of micoplastics by Raman spectroscopy”: 

18th SEATUC symposium, February 2024.

[4] T. Hoshino and H. Yokoi, “Design of optical triplexer with cascaded MMI couplers and 

    waveguide crossing with offset”: 16th SEATUC symposium, February 2022.

[5] K. Ichige, R. Khun-in, A. Bhatranand, and H. Yokoi, “Tunable characteristics of 

    mechanically induced long-period fiber grating”: 16th SEATUC symposium, February 

    2022.