Nec Corporation

The Furukawa Electric Co., Ltd.

Lion Corporation

Kazuhiko Matsuda

Haruhiko Toda

Tetsuro Wada

Hiroshi Miyake

Masaki Izumo

Kazuhiro Miyazawa

Masaki Hattori

Masahiro Sato

An optical power supply type sensing system includes: an optical directivity coupler () mounted in a sensor unit (); a photo-electric converter () connected to a first optical fiber () among the first to the third optical fiber () connected to the optical directivity coupler (); an optical output device () connected to the second optical fiber (); and a measurement device () connected to the third optical fiber () drawn out of the sensor unit ().

Optical power supply type sensing system

An optical delay circuit includes an optical loop for repeatedly introducing a unit time delay into propagation of parts of an input optical signal representative of pieces of data information; when the optical loop introduces a time delay to be required for one of the parts, a controller instructs an optical switch inserted in the optical loop to transfer the part to an output optical circuit so that the optical delay circuit occupies small space.

Optical delay circuit having optical loop for repeatedly introducing delay time between input data and output data and method used therein

Non-ionic surfactants, emulsified compositions, dispersions and a

An optical parallel receiver according to the present invention is provided with a plurality of photodetectors supplied with light signals, respectively, and a reference photodetector receiving a reference light signal having a constant light power equal to that of the received light signals. The reference photodetector supplies an electric signal to be used for generating a DC reference voltage signal. The DC reference voltage signal is used in all of differential amplifiers, respectively.

Optical parallel receiver

Growing community of inventors

Tokyo, Japan

Kazuhiko Matsuda