@article{CTT100620817,
  author = {Hamed Dalir and Yasushi Yokota and Fumio Koyama},
  title = {Spatial Mode Multiplexer/Demultiplexer Based on Tapered Hollow Waveguide},
  journal = {IEICE Electronics Express},
  year = 2011,
}

@article{CTT100570913,
  author = {Yasuki Sakurai and Yasushi Yokota and Akihiro Matsutani and Fumio Koyama},
  title = {Tunable hollow waveguide Bragg grating with low temperature dependence},
  journal = {Appl. Phys. Lett.},
  year = 2005,
}

@inproceedings{CTT100625986,
  author = {Hamed Dalir and Yasushi Yokota and Fumio Koyama},
  title = {Spatial Mode Multiplexer/Demultiplexer Based on Tapered Hollow Waveguide},
  booktitle = {},
  year = 2011,
}

@inproceedings{CTT100508492,
  author = {Yasushi Yokota and Fumio Koyama},
  title = {Tunable Spot Size Converter and Vertical Resonant Coupler Based on Hollow Optical Waveguide},
  booktitle = {32th European Conference on Optical Communication, ECOC},
  year = 2006,
}

@inproceedings{CTT100508368,
  author = {Yasuki Sakurai and Hideaki Yamakawa and Yasushi Yokota and Akihiro Matsutani and Takahiro Sakaguchi and Fumio Koyama},
  title = {Hollow Waveguide Distributed Bragg Reflector for Widely Tunable Optical Devices},
  booktitle = {Optical Fiber Communications Conference 2006},
  year = 2006,
}

@inproceedings{CTT100591110,
  author = {Toru Miura and Yasushi Yokota and Fumio Koyama},
  title = {Proposal of tunable demultiplexer based on tapered hollow waveguide with highly reflective multilayer mirrors},
  booktitle = {18th Annual Meeting of the IEEE Lasers and Electro-Optics Society, LEOS2005},
  year = 2005,
}

@inproceedings{CTT100591053,
  author = {Yasuki Sakurai and Yasushi Yokota and Akihiro Matsutani and Fumio Koyama},
  title = {Temperature Insensitive Operation of Widely Tunable Hollow Waveguide Grating},
  booktitle = {Conference on Optical Fiber Communications, OFC2005},
  year = 2005,
}

@inproceedings{CTT100661935,
  author = {Y. Yokota and T. Miura and M. Ishikawa and A. Matsutani and F. Koyama},
  title = {Fabrication of Hollow Optical Waveguide with Wafer Bonding},
  booktitle = {OptoElectronics and Communications Conference/International Conference on Optical Internet},
  year = 2004,
}