Inventor

KITOH TSUTOMU

JP18 patents

⚠️ This page may combine multiple inventors who share the name “KITOH TSUTOMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KITOH TSUTOMU

NIPPON TELEGRAPH & TELEPHONE

Optical multi/demultiplexing circuit equipped with phase generating device

Planar lightwave circuit and optical circuit

Optical multi/demultiplexer

Wave transmission medium and waveguide circuit

Optical coupling/splitting device, two-way optical propagation device, and optical-transmit-receive system

Interferometer optical switch and variable optical attenuator

Optical wavelength multiplexing/ de-multiplexing circuit

Planar lightwave circuit, design method for wave propagation circuit, and computer program

Optical multiplexer and optical demultiplexer

Optical functional circuit

Arrayed waveguide grating, optical module provided with said arrayed waveguide grating, and optical communications system

SAIDA TAKASHI

Planar lightwave circuit, design method for wave propagation circuit, and computer program

Planar lightwave circuit, design method for wave propagation circuit, and computer program

Planar lightwave circuit, design method for wave propagation circuit, and computer program

KITOH TSUTOMU

Optical wavelength multiplexing/demultiplexing circuit, optical module using optical wavelength multiplexing/demultiplexing circuit, and communication system

Optical wavelength multi/demultiplexer

MIZUNO TAKAYUKI

Wideband interferometer type polarization light beam combiner and splitter

NTT ELECTRONICS CORP

Arrayed waveguide grating type optical multiplexer/demultiplexer circuit