公开(公告)号：HK147894A

公开(公告)日：1995-01-06

申请号：HK147894

申请日：1994-12-30

Applicant: CORNING INC

Inventor： LERMINIAUX CHRISTIAN ,  LABORDE PASCALE ,  BENVENISTE CARLOS OBADIA NISSI ,  HALL DOUGLAS WARREN ,  JANSEN RICHARD

IPC: G02B6/00 ,  G02B6/12 ,  G02B6/122 ,  G02B6/13 ,  G02B6/30 ,  G02F1/35 ,  H01S3/06 ,  H01S3/063 ,  H01S3/07 ,  H01S3/094 ,  H01S3/10 ,  H01S3/17 ,  H01S3/23

Abstract: An optical signal amplifier with a waveguide path integrated into a glass body (7) that is doped with optically active material. The signal to be amplified is transmitted through the waveguide (1') and the pump power (8) is coupled into the waveguide at one end. The waveguide (1') comprises closely spaced adjacent guide lengths in the form of a spiral, zigzag paths between mirrors (10), or parallel paths with connecting semicircles (12) at alternating ends of succeeding pairs of paths.

公开(公告)号：AU1215992A

公开(公告)日：1992-09-24

申请号：AU1215992

申请日：1992-03-10

Applicant: CORNING INC

Inventor： HALL DOUGLAS WARREN ,  MILLER WILLIAM JAMES ,  WEBB THOMAS WILLIAM ,  WEIDMAN DAVID LEE

IPC: G02F1/35 ,  G02B6/28 ,  G02B6/287 ,  G02B6/34 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/094 ,  H01S3/10 ,  H01S3/17 ,  G02B6/26 ,  G02F1/39 ,  H04B10/16

Abstract: Disclosed is a fiber amplifier system in which a gain fiber is operatively combined with a fiber optic coupler having first and second coupler optical fibers. The coupler fibers are fused together along a portion of their lengths to form a wavelength dependent coupling region whereby most of the light power of a wavelength lambda s couples between them, and most of the light power of a wavelength lambda p that is introduced into the first fiber remains in it. The mode field diameter of the first coupler fiber is substantially matched to that of the gain fiber and is smaller than that of the second coupler fiber. One end of the first coupler fiber is spliced to the gain fiber. A transmission fiber is spliced to the second coupler fiber, and a laser diode introduces pumping light of wavelength lambda p to the first coupler fiber. The fiber optic coupler preferably includes an elongated body of matrix glass through which the first and second coupler fibers extend. The matrix glass has a refractive index n3 that is lower than that of the fiber claddings. The fibers are fused together along with the midregion of the matrix glass, the fiber cores being more closely spaced at the central portion of the midregion than at the body endfaces, thereby forming the coupling region.