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:
Nov. 12, 2002
Filed:
Apr. 17, 2001
Tohru Mori, Tokyo, JP;
Masaru Fukushima, Tokyo, JP;
Other;
Abstract
In an optical amplifier evaluation instrument, a rectangular spectrum light source transmits continuous light having a wide-band and flat spectrum shape, a first optical modulator receives and pulse-modulates the continuous light. Further, a second optical modulator operates in the same period as the first optical modulator and performs the on/off pulse operation, thereby providing a sampling window in a time domain for extracting and suppressing an optical signal. A modulation signal generation section performs such control and drive. An optical signal undergoing pulse intensity modulation is input to a measured optical amplifier Post-amplified signal light power for each frequency component and amplified spontaneous emission power for each frequency component in a time domain in which no optical pulse signal exists are measured and operations are performed for each wavelength.