Takeshi Fujisawa

50-Gb/s Direct Modulation of a 1.3-μm InGaAlAs-Based DFB Laser With a Ridge Waveguide Structure

Wataru Kobayashi, Tsuyoshi Ito, T. Yamanaka et al. · IEEE Journal of Selected Topics in Quantum Electronics · 2013 · 117 citations

Engineering, Electrical Engineering, Materials Science +17

All-optical logic gates based on nonlinear slot-waveguide couplers

Takeshi Fujisawa, Masanori Koshiba · Journal of the Optical Society of America B · 2006 · 116 citations · Full text

Engineering, Electrical Engineering, Optical Materials +16

Polarization-independent optical directional coupler based on slot waveguides

Takeshi Fujisawa, Masanori Koshiba · Optics Letters · 2006 · 103 citations · Full text

Engineering, Electrical Engineering, Materials Science +17

Design and Fabrication of 10-/40-Gb/s, Uncooled Electroabsorption Modulator Integrated DFB Laser With Butt-Joint Structure

Wataru Kobayashi, M. Arai, T. Yamanaka et al. · Journal of Lightwave Technology · 2009 · 97 citations

Engineering, Electrical Engineering, Optoelectronics +16

Low-loss, compact, and fabrication-tolerant Si-wire 90° waveguide bend using clothoid and normal curves for large scale photonic integrated circuits

Takeshi Fujisawa, Shuntaro Makino, Takanori Sato et al. · Optics Express · 2017 · 93 citations · Full text

Engineering, Electrical Engineering, Optical Materials +16