Inventor

NARA KAZUTAKA

JP65 patents

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

NARA KAZUTAKA

FURUKAWA ELECTRIC CO LTD

Arrayed waveguide grating and method for compensating optical transmitting center wavelength of light traveling through the same

Arrayed waveguide grating

Arrayed waveguide grating

Arrayed waveguide grating type optical multiplexer/demultiplexer and a method of manufacturing the same

Arrayed waveguide grating type optical multiplexer/demultiplexer

SOA-PLC hybrid integrated polarization diversity circuit and method for manufacturing the same

Delay demodulation devices

Delay demodulation devices

Delay-line demodulator

Delay-line demodulator

Optical integrated circuit and optical integrated circuit module

Delay-line demodulator and method of adjusting a phase shift in the demodulator

Optical circuit, method for manufacturing optical circuit, optical circuit device and method for controlling optical circuit device

Arrayed waveguide grating optical multiplexer/demultiplexer and method for manufacturing the same

Arrayed waveguide grating type optical multiplexer/demultiplexer and optical waveguide circuit

Arrayed waveguide grating type optical multiplexer/demultiplexer

Dispersion compensator and dispersion-compensating module employing the same

Optical waveguide circuit

Arrayed waveguide grating

Optical circuit device

Spot-size conversion optical waveguide

Dispersion compensator, method for manufacturing the same, and method for compensating wavelength dispersion

Dispersion compensator, method for manufacturing the same, and method for compensating wavelength dispersion

Arrayed waveguide grating type optical multiplexer/demultiplexer and optical waveguide circuit

Arrayed waveguide grating optical multiplexer/demultiplexer and method for manufacturing the same

Arrayed waveguide grating optical multiplexer/demultiplexer and method for manufacturing the same

Planar lightwave circuit platform and method for manufacturing the same

Optical waveguide circuit

Optical waveguide and method for fabricating the same

Arrayed waveguide grating type optical multiplexer/demultiplexer

Dynamic gain equalizer

Method for manufacturing a planar lightwave circuit, and planar waveguide circuit

Optical waveguide circuit module

Broadband wavelength multiplexing and demultiplexing filter and optical splitter with optical signal multiplexing and demultiplexing function

Broadband wavelength multiplexing and demultiplexing filter and optical splitter with optical signal multiplexing and demultiplexing function

Arrayed waveguide grating and method for manufacturing the same

Athermal AWG module

Methods to control phase shifts of delay demodulation devices

Arrayed waveguide grating optical multiplexer/demultiplexer

Arrayed waveguide grating optical multiplexer/demultiplexer

Planar optical waveguide circuit type variable attenuator

Arrayed waveguide grating type optical multiplexer/demultiplexer

KAWASHIMA HIROSHI

PLC-type delay demodulation circuit and PLC-type optical interferometer

PLC-type delay demodulation circuit

PLC-type delay demodulation circuit

Tunable dispersion compensator

INOUE TAKASHI

PLC-type demodulator and optical transmission system

90-degree hybrid

HASEGAWA JUNICHI

Arrayed-waveguide-grating-type optical multiplexer/demultiplexer

UCHIDA YASUYOSHI

SSC chip, fiber array attached with SSC, PLC module attached with SSC and method for manufacturing SSC