Title:
OPTICAL AMPLIFIER AND LASER LIGHT SOURCE
Document Type and Number:
Japanese Patent JPH09181381
Kind Code:
A
Abstract:
To provide an optical amplifier which produces noises less and is enhanced in gain and a laser light source.
An Nd-doped fluoride fiber 5 is arranged as an amplifying medium in front of a Pr-doped fluoride fiber 6, exciting light emitted from exciting light sources 1 and 2 are made to impinge on fluoride fibers 5 and 6 through the intermediary of optical couplers 3 and 4 so as to get the fluoride fibers 5 and 6 excited, whereby signal light can be uniformly amplified through a frequency range of 1.30 to 1.32μm.
Inventors:
OISHI YASUTAKE
KANAMORI TERUHISA
YAMADA MAKOTO
SUDO SHOICHI
KANAMORI TERUHISA
YAMADA MAKOTO
SUDO SHOICHI
Application Number:
JP33531195A
Publication Date:
July 11, 1997
Filing Date:
December 22, 1995
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
G02F1/35; H01S3/06; H01S3/07; H01S3/10; H01S3/17; (IPC1-7): H01S3/10; G02F1/35; H01S3/07; H01S3/17
Attorney, Agent or Firm:
Yoshitaka Yoshitaka