"Akihiro Imamura,Weijian Yang,James Ferrara,Yuuki Hasidume,Xiaodong Gu,Fumio Koyama,Connie J. Chang-Hasnain","Spatial Mode Demultiplexer Based on High Contrast Sub-Wavelength Grating Hollow Waveguide","The 16th Opto-Electronics And Communications Conference, OECC2011",,,,"  6E1_4",,2011,July
"Ayumi Fuchida,Bala Pesala,Vadim Karagodsky,Forrest G. Sedgwick,Fumio Koyama,Connie J. Chang-Hasnain","Zero-Dispersion Slow Light in Hollow Waveguide with High-Contrast Grating","Laser Science to Photonic, CLEO/QELS:2010",,,,"  CThW5",,2010,May
"Akihiro Imamura,Vadim Karagodsky,Bala Pesala,Fumio Koyama,Connie J. Chang-Hasnain","Multi-Wavelength VCSEL Array based on High Contrast Sub-Wavelength Grating","The 22nd Annual Meeting of the IEEE Photonics Society",,,,"  ThX5","pp. 811-812",2009,Oct.
"Bala Pesala,Vadim Karagodsky,Connie Chang-Hasnain,Vadim Karagodsky,Fumio Koyama,Connie Chang-Hasnain","Novel 2D High-Contrast Grating Hollow-Core Waveguide","CLEO/IQEC2009","Conference on Lasers and Electro-Optics",,,"  CMQ7",,2009,May
"Koichi Hasebe,XiaoUe Zhao,Takahiro Sakaguchi,Fumio Koyama,Connie Chang-Hasnain,Nobuhiko Nishiyama,Cathrine Caneau,Chung-en Zah","Bandwidth Enhancement with Tunable Optical Equalizer for High Speed Intensity Modulation","CLEO 2008","2008 Conference on Lasers and Electro-Optics & Quantum Electronics and Laser Science Conference, Vols 1-9",,,,"pp. 430-431",2008,May