Title:
光増幅器
Document Type and Number:
Japanese Patent JP3618008
Kind Code:
B2
Abstract:
A light amplifier includes first and second light amplifying parts, and a first control part. The first light amplifying part has a first number of elements or ions performing a light amplifying operation and is excited by a first exciting light which is excessive with respect to the first number of elements or ions. The first light amplifying part amplifies a signal light applied hereto. The second light amplifying part has a second number of elements or ions performing a light amplifying operation and is excited by a second exciting light having a constant intensity. The second number is than the first number. The second light amplifying part amplifies an amplified signal light output from the first light amplifying part. The first control part performs a control operation so that an intensity of the amplified signal light output from the first light amplifying part is constant.
Inventors:
Hideaki Sugitani
Application Number:
JP5956495A
Publication Date:
February 09, 2005
Filing Date:
March 17, 1995
Export Citation:
Assignee:
富士通株式会社
International Classes:
H01S3/06; H01S3/067; H01S3/07; G02F1/35; H01S3/10; H01S3/13; H04B10/07; H04B10/29; H04B10/293; H04B10/294; H04B10/564; H04B10/572; H01S3/131; H01S3/23; (IPC1-7): H01S3/10; H01S3/07
Domestic Patent References:
| JP6318754A | ||||
| JP5048207A | ||||
| JP6097554A | ||||
| JP5343784A | ||||
| JP6053588A | ||||
| JP5241209A | ||||
| JP5019311A | ||||
| JP65958A | ||||
| JP5152691A | ||||
| JP5100260A | ||||
| JP749917A |
Foreign References:
| US5177634 | ||||
| US5280383 |
Attorney, Agent or Firm:
Tadahiko Ito