OPTICALLY FUNCTIONAL GLASS - SUMITOMO ELECTRIC INDUSTRIES

Title:

OPTICALLY FUNCTIONAL GLASS

Document Type and Number:

Japanese Patent JPH0558674

Kind Code:

A

Abstract:

PURPOSE: To provide an optically functional glass capable of amplifying light having a wavelength band of 1.3μm, and to provide a fiber amplifier using the same, etc.

CONSTITUTION: Optically functional glass used for an optical fiber 30 contains Pr, Cr and Yb as active substances. The Cr is excited by the presence of white exciting light from a Xe lamp 32, the Yb received the transmission of energy from the Cr is also excited. Further, the Pr received the transmission of energy from the Yb is also excited. The excited Pr is induced into signal light to generate radiation light having a wavelength band of 1.3μm corresponding to a transition from 1G4 to 3HS. When the excited light exceeds a prescribed strength, the signal light is amplified.

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Inventors:

ONISHI MASASHI
KOGO TAKASHI
NAKAZATO KOJI
KANAMORI HIROO
WATANABE MINORU
MIYAJIMA YOSHIAKI

Application Number:

JP21899191A

Publication Date:

March 09, 1993

Filing Date:

August 29, 1991

Export Citation:

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Assignee:

SUMITOMO ELECTRIC INDUSTRIES
NIPPON TELEGRAPH & TELEPHONE

International Classes:

C03C13/04; G02B6/00; G02B6/12; G02F1/35; H01S3/06; H01S3/07; H01S3/0915; H01S3/17; (IPC1-7): C03C13/04; G02B6/00; G02B6/12; G02F1/35; H01S3/07; H01S3/0915; H01S3/17

Attorney, Agent or Firm:

Yoshiki Hasegawa (3 outside)

Next Patent: JPH0558675