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:
Jun. 12, 2012
Filed:
Sep. 16, 2009
Yuichiro Sakane, Fukuoka, JP;
Ryuta Hoshi, Fukuoka, JP;
Akira Yamamoto, Fukuoka, JP;
Tsutomu Tsurumi, Kawasaki, JP;
Yasushi Sugaya, Kawasaki, JP;
Tomoyuki Sakata, Fukuoka, JP;
Kouichi Maeda, Fukuoka, JP;
Hiromu Yoshii, Fukuoka, JP;
Yuichiro Sakane, Fukuoka, JP;
Ryuta Hoshi, Fukuoka, JP;
Akira Yamamoto, Fukuoka, JP;
Tsutomu Tsurumi, Kawasaki, JP;
Yasushi Sugaya, Kawasaki, JP;
Tomoyuki Sakata, Fukuoka, JP;
Kouichi Maeda, Fukuoka, JP;
Hiromu Yoshii, Fukuoka, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An aspect of the embodiments utilizes an optical transmission apparatus which includes a rough adjustment execution portion that monitors a bit error rate of an optical signal for set values of a dispersion compensator where the set values have been set less closely to each other within a dispersion compensation control range than when a wavelength dispersion value set in the dispersion compensator is determined, and carries out a rough adjustment to determine a comparison threshold value used to set the wavelength dispersion value based on the monitored bit error rate, and a fine adjustment execution portion that monitors the bit error rate for the dispersion compensator the set values have been set more closely to each other, and carries out an adjustment to determine a wavelength dispersion value corresponding to the midpoint between the two acquired bit error rates as the wavelength dispersion value of the dispersion compensator.