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. 23, 2009
Filed:
Nov. 01, 2007
Etsuko Hayashi, Kawasaki, JP;
Shunsuke Ono, Nagoya, JP;
Setsuhisa Tanabe, Kyoto, JP;
Shinichirou Muro, Kawasaki, JP;
Masato Nishihara, Kawasaki, JP;
Etsuko Hayashi, Kawasaki, JP;
Shunsuke Ono, Nagoya, JP;
Setsuhisa Tanabe, Kyoto, JP;
Shinichirou Muro, Kawasaki, JP;
Masato Nishihara, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Kyoto University, Kyoto, JP;
Abstract
In an optical amplification characteristics simulation apparatus according to the present invention, using spectrums of a signal light input to an optical amplifier and a characteristic parameter for amplification medium, gain wavelength characteristics of the amplification medium are calculated. A calculating formula for the above has a parameter corresponding to a gain fluctuation portion due to a gain spectral hole burning (GSHB) phenomenon, and this parameter is defined by a function obtained by modeling a physical phenomenon in which a population inversion rate is reduced due to the GSHB, based on that electron occupation numbers in each Stark level on the end level side are increased. Then, based on the calculated gain wavelength characteristics, the output power of the signal light is obtained, to thereby perform the optical amplification characteristics simulation on the optical amplifier. As a result, it is possible to construct a high versatile calculation model based on the physical phenomenon for the gain fluctuation due to the GSHB, to thereby simulate with high precision the optical amplification characteristics of the optical amplifier under arbitrary conditions.