@article{CTT100589317,
  author = {Padullaparthi Babu Dayal and Takahiro Sakaguchi and Akihiro Matsutani and Fumio Koyama},
  title = {Multiple-Wavelength Vertical-Cavity Surface-Emitting Lasers by Grading a Spacer Layer for Short-Reach Wavelength Division Multiplexing Applications},
  journal = {Appl. Phys. Exp.},
  year = 2009,
}

@article{CTT100555251,
  author = {Babu Dayal and Fumio Koyama},
  title = {Polarization control of 0.85μm vertical-cavity surface-emitting lasers integrated with gold nanorod arrays},
  journal = {Appl. Phys. Lett.},
  year = 2007,
}

@article{CTT100555763,
  author = {Padullaparthi Babu Dayal and Naoto Kitabayashi and Tomoyuki Miyamoto and Fumio Koyama and T. Kawashima and S. Kawakami},
  title = {Polarization control of 1.15µm vertical-cavity surface-emitting lasers using autocloned photonic crystal polarizer},
  journal = {Appl. Phys. Lett.},
  year = 2007,
}

@inproceedings{CTT100905881,
  author = {Babu Dayal Padullaparthi and Chang Ge and Liang Dong and Xiaodong Gu and Satoshi Shinada and Fumio Koyama},
  title = {Long-reach, 50Gb/s NRZ transmission of uncooled 1060nm single-mode coupled cavity VCSELs},
  booktitle = {},
  year = 2023,
}

@inproceedings{CTT100555266,
  author = {Babu Dayal Padullaparthi and Koyama Fumio},
  title = {Polarization Controlled 0.85 μm VCSELs with Plasmonic Nanorods},
  booktitle = {CLEO 2007},
  year = 2007,
}

@inproceedings{CTT100507330,
  author = {P. Babu Dayal and Takashi Kawashima and Naoto Kitabayashi and Tomoyuki Miyamoto and Fumio Koyama and S. Kawakami},
  title = {Polarization control of 1.2µm single-mode VCSELs using photonic crystal polarizer},
  booktitle = {},
  year = 2006,
}

@inproceedings{CTT100508485,
  author = {Jiro Hashizume and P. Babu Dayal and Fumio Koyama},
  title = {Metal Nano-aperture VCSEL for Near-Field Optics and Polarization Control},
  booktitle = {20th International Semiconductor Laser Conference, ISLC2006},
  year = 2006,
}