Microoptics Conference, The Japan Society of Applied Physics, Microoptics Conference Best Paper Award,Experimental demonstration of polarization beam splitter based on auto-cloning photonic crystalK. Yajima T. Kawashima T. Ijiro T. Chiba S. Kawakami H. Takahashi
2016年2月
Rank Prize Funds, The Rank Prize for Optoelectronics,UKHiroshi takahashi Meint K. Smit Corrado P. Dragone
Toshinori Ban   Hiroshi Hasegawa   Ken-ichi Sato   Toshio Watanabe   Hiroshi Takahashi   
OPTICS EXPRESS 21(1) 469-477 2013年1月
We propose a novel large-scale OXC architecture that utilizes WSSs for dynamic wavelength grouping and 1xn switches for fiber selection. We also develop a network design algorithm that can make the best use of the routing capability of the propose...
2013 OPTICAL FIBER COMMUNICATION CONFERENCE AND EXPOSITION AND THE NATIONAL FIBER OPTIC ENGINEERS CONFERENCE (OFC/NFOEC) OM3C.1, 2013 2013年
We devised an optical modulator with a high field-response linearity, which is suitable for a DAC-based multilevel coherent transmitter. An advantage over a conventional MZM in terms of the linearity-loss tradeoff was demonstrated.
T. Niwa   H. Hasegawa   K. Sato   T. Watanabe   H. Takahashi   S. Soma   
2013 OPTICAL FIBER COMMUNICATION CONFERENCE AND EXPOSITION AND THE NATIONAL FIBER OPTIC ENGINEERS CONFERENCE (OFC/NFOEC) OW1C.2, 2013 2013年
The wavelength tunable filter will play a key role in realizing C/D/C add/drop functions in ROADMs. We fabricate a novel tunable filter for 192 optical channels on a PLC chip. Transmission experiments verify its optical characteristics.