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:
Sep. 24, 2002
Filed:
May. 15, 2000
Applicant:
Inventor:
Kazunori Naganuma, Tokyo, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 9/02 ;
U.S. Cl.
CPC ...
G01B 9/02 ;
Abstract
A method for measuring a temporal waveform of the electric field of an optical signal avoids substantial sacrifice of sensitivity and enables accurate measuring of the ultra-fast temporal waveform of the electric field of the optical signal. It generates phase conjugated light by applying light whose phase is fixed with respect to optical signal to be measured; obtains spectral phase by observing mixed spectrum generated by combining the optical signal to be measured with the phase conjugated light; and obtains the temporal waveform of the electric field of the optical signal by attaching the spectral phase to a separately observed spectrum of the optical signal to be measured.