OPTICAL AMPLIFIER - 富士通株式会社

Title:

OPTICAL AMPLIFIER

Document Type and Number:

Japanese Patent JP3260839

Kind Code:

B2

Abstract:

PURPOSE: To obtain an optical amplifier applicable to a duplex optical transmission system, regarding an optical amplifier equipped with optical pumping type optical amplification medium (e.g. Er-doped fiber).
CONSTITUTION: The optical amplifier consists of the following; a doped fiber 16, an optical circulator 14 having at least three ports, a Y-branch type optical coupler 15 connecting the optical circulator 14 with the doped fiber 16, a laser diode 13 for pumping light, and a means which introduces the pumping light together with a light to be amplified into the optical coupler 15 via the optical circulator.

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Inventors:

Youichi Oikawa

Application Number:

JP21771992A

Publication Date:

February 25, 2002

Filing Date:

August 17, 1992

Export Citation:

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Assignee:

富士通株式会社

International Classes:

G02F1/35; H01S3/06; H01S3/067; H01S3/07; H01S3/094; H01S3/10; H01S3/23; (IPC1-7): H01S3/10

Domestic Patent References:

JP371115A
JP669579A
JP6188526A
JP540283A
JP529686A
JP5129685A
JP429123A
JP6510135A

Attorney, Agent or Firm:

Akira Matsumoto

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