The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2014
Filed:
Apr. 14, 2010
Norio Tanaka, Tokyo, JP;
Shigeru Takarada, Tokyo, JP;
Hirobumi Watanabe, Kawasaki, JP;
Shiro Futaki, Yokohama, JP;
Ichiro Ueno, Isehara, JP;
Takashi Hiraga, Ikeda, JP;
Noritaka Yamamoto, Ikeda, JP;
Norio Tanaka, Tokyo, JP;
Shigeru Takarada, Tokyo, JP;
Hirobumi Watanabe, Kawasaki, JP;
Shiro Futaki, Yokohama, JP;
Ichiro Ueno, Isehara, JP;
Takashi Hiraga, Ikeda, JP;
Noritaka Yamamoto, Ikeda, JP;
Dainichiseika Color & Chemicals Mfg. Co., Ltd., Tokyo, JP;
Inter Energy Co., Ltd., Kawasaki-shi, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Abstract
An optical path switching type optical signal transmission/reception apparatus includes a one-to-seven compatible optically controlled optical path switching apparatusthat is connected to a host optical signal transmission/reception apparatusvia an optical fiber, a total of seven subordinate optical communication adaptersconnected via optical fibers, user side devicesconnected to respective subordinate optical communication adapters via an electric circuit, an optical transmission/reception control circuit provided in each of the total of seven subordinate user side optical communication adapters, and including an uplink optical signal transmission mechanism, a downlink optical signal reception mechanism, a control light source that can generate control light to drive the optical path switching apparatus, in which a wavelength of the generated control light is different from a wavelength of signal light, and an optical communication oriented transmission/reception mechanism using the wavelength of the control light source, optical pathstodedicated to the control light to connect the optical path switching apparatusto the seven user side optical communication adapters, and a reflection-type star coupler.