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:
Jan. 04, 2011
Filed:
Nov. 24, 2006
Tetsuya Kawanishi, Tokyo, JP;
Masayuki Izutsu, Tokyo, JP;
Takahide Sakamoto, Tokyo, JP;
Masahiro Tsuchiya, Tokyo, JP;
Tetsuya Kawanishi, Tokyo, JP;
Masayuki Izutsu, Tokyo, JP;
Takahide Sakamoto, Tokyo, JP;
Masahiro Tsuchiya, Tokyo, JP;
Abstract
It is an object of the present invention to provide a method and a device for automatically calibrating a light intensity measurement device. The device () includes an optical switch () for switching a route of output from an optical intensity modulator (), an optical attenuator () arranged on a first waveguide (), a second waveguide (), a light intensity measurement device (), a control device () for receiving light intensity information measured by the light intensity measurement device () and controlling the signal to be applied to the optical intensity modulator (), and a signal source () for receiving a control signal of the control device () and adjusting the signal to be applied to the optical intensity modulator ().