Title:
FARADAY ROTATOR
Document Type and Number:
Japanese Patent JP3476557
Kind Code:
B2
Abstract:
PURPOSE: To obtain a wide range of wavelengths in a 1310nm wavelength range and to correspond to multiwavelength communication in this wavelength range.
CONSTITUTION: This Faraday rotator is produced by laminating a film (A) comprising a LPE magnetic garnet single crystal expressed by compsn. formula R13-xBixFe5-yZyO12 and a film (B) comprising a LPE magnetic garnet single crystal expressed by compsn. formula R23-zSmzFe5O12. This rotator is used in the wavelength range from 1250nm to 1370nm. In formulae, R1 is a rare earth element including Y, Z is Al, In, Ga, x and y satisfy 0.3≤x≤1.9, 0≤y≤0.5, R2 is a rare earth element including Bi and Y, and z satisfies 0.5≤z<3.
Inventors:
Toshiyasu Suzuki
Hiroki Kawai
Hiromitsu Umezawa
Hiroki Kawai
Hiromitsu Umezawa
Application Number:
JP22862594A
Publication Date:
December 10, 2003
Filing Date:
August 30, 1994
Export Citation:
Assignee:
FDK Corporation
International Classes:
G02F1/09; C30B29/28; (IPC1-7): G02F1/09; C30B29/28
Domestic Patent References:
| JP6474528A |
Attorney, Agent or Firm:
Jo Shigemi