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Title:
【発明の名称】補償されたSBSのない光ビーム増幅および伝送装置および方法
Document Type and Number:
Japanese Patent JP2661853
Kind Code:
B2
Abstract:
An optical beam amplification and delivery system comprises a central station (2) having a phase conjugate mirror (26) and an optical amplifier (24) coupled together for amplification and phase conjugation of an input optical signal. Further provided is a local station (4), means (8, 10, 12, 14) for supplying a source optical signal at said local station (4) and optical fiber means (18) connecting said central (2) and local (4) stations. Coupling means (16, 19, 20) at said local station (4) couple said source optical signal into said optical fiber means (18) for amplification and phase conjugation at said central station (2) and for returning along said optical fiber means (18) to said local station (4). Said coupling means (16, 19, 20) decouple the returned optical signal from said optical fiber means (18) for use at the local station (4), said phase conjugate mirror (26) rendering said returned optical signal more nearly diffraction limited than an originally diffraction limited optical signal of the same power that is transmitted in a single path through said optical fiber means (18). Said optical fiber means (18) have a cross-sectional area sufficient to substantially inhibit stimulated Brillouin scattering by said return optical signal (Fig. 2). Further disclosed is a respective method of providing an amplified relatively diffraction limited optical signal for use at a first local station.

Inventors:
DEBITSUDO EE ROTSUKUERU
JON ERU BAATERUTO
Application Number:
JP34067392A
Publication Date:
October 08, 1997
Filing Date:
December 21, 1992
Export Citation:
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Assignee:
EICHI II HOORUDEINGUSU INC DEII BII EE HYUUZU EREKUTORONIKUSU
International Classes:
G02F1/35; H01S3/07; H01S3/10; H01S3/23; H04B10/2537; H04B10/2581; H04B10/2587; H04B10/272; H04B10/29; H04B10/293; (IPC1-7): G02F1/35; H01S3/07; H01S3/10
Domestic Patent References:
JP63502453Y
JP62502228Y
Attorney, Agent or Firm:
Takehiko Suzue