Title:
光学材料、光増幅器及びその製造方法
Document Type and Number:
Japanese Patent JP4263552
Kind Code:
B2
Abstract:
To provide optical material in which flocculate does not occur even if rare earth element like Er is mixed to high density and which is suitable for material of a core layer of an optical amplifier which amplifies an optical signal of 1.55 μm wavelength band.
The optical material is formed by mixing alkoxide of rare earth element M (where M is any one kind of element out of Er, Eu, Pr and Y) to poly silane shown by a formula (1). In the formula (1), R1-R4 are Ph (phenyl group), Me (methyl group), Et (ethyl group), OMe (O-methyl group), and OEt (O-ethyl group) or O-Si-O (crosslink).
COPYRIGHT: (C)2005,JPO&NCIPI
Inventors:
Shinya Sasaki
Yasuo Yamagishi
Yasuo Yamagishi
Application Number:
JP2003207271A
Publication Date:
May 13, 2009
Filing Date:
August 12, 2003
Export Citation:
Assignee:
富士通株式会社
International Classes:
G02B6/02; C08G77/58; H01S3/17; C08G79/00; C08K5/057; C08L83/16; H01S3/06; H01S3/10
Domestic Patent References:
| JP8091856A | ||||
| JP2311321A | ||||
| JP9244082A | ||||
| JP9241628A | ||||
| JP7185306A |
Foreign References:
| WO2001044837A1 |
Attorney, Agent or Firm:
Keizo Okamoto