Haruhiko Tabuchi

Integrated semiconductor optical devices and method of manufacture employing substrate having alignment groove

Hybrid optical IC with optical axes at different levels

Hybrid type integrated optical device having double-layered substrate

Optical parts fixing apparatus and method of manufacturing the same

Optical semiconductor device and a method of manufacturing the same

Optical coupling structure and a fabrication process thereof

Optical semiconductor device for changing a beam diameter

Optical device with slab waveguide and channel waveguides on substrate

Optical tansmitting and receiving device and the manufacturing method

Wavelength division demultiplexing apparatus