公开(公告)号：AU682094B2

公开(公告)日：1997-09-18

申请号：AU1656095

申请日：1995-04-19

Applicant: CORNING INC

Inventor： KECK DONALD BRUCE ,  NOLAN DANIEL ALOYSIUS ,  WEIDMAN DAVID LEE

IPC: G02B6/122 ,  G02B6/26 ,  G02B6/28 ,  G02B6/34 ,  G02B6/42 ,  H01L31/173 ,  H04B10/12 ,  H04B10/135 ,  H04B10/14 ,  H04B10/2581 ,  G02B6/43

公开(公告)号：DE69122955T2

公开(公告)日：1997-02-27

申请号：DE69122955

申请日：1991-11-27

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

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.

公开(公告)号：DE68920270T2

公开(公告)日：1995-08-10

申请号：DE68920270

申请日：1989-10-16

Applicant: CORNING INC

Inventor： NEWHOUSE MARK ANDREW ,  NOLAN DANIEL ALOYSIUS ,  WEIDMAN DAVID LEE

IPC: G02B6/14 ,  G02B6/26 ,  G02B6/42 ,  G02B6/28

Abstract: Disclosed is a mode field modifier (40) which can be used in a fiber-to-fiber connector or a source-to-fiber connector. In a downtaper-type mode field modifier embodiment, the modifier comprises a modifier core (42) of refractive index n1 surrounded by first and second cladding layers (44, 46) having refractive indices n2 and n3, respectively. In an uptaper-type mode field modifier (60) embodiment, the modifier comprises a modifier core (56) of refractive index n1 surrounded by a cladding layer (58) having a refractive index n2. The refractive indices are such that n1 > n2 > n3. In both embodiments, there is a nonadiabatic taper (N, N ) intermediate the ends of the mode field modifier, whereby a substantial amount of mode coupling occurs therein.

公开(公告)号：AU660384B2

公开(公告)日：1995-06-22

申请号：AU5277293

申请日：1993-12-31

Applicant: CORNING INC

Inventor： WEIDMAN DAVID LEE

IPC: G02B6/287 ,  G02B6/28 ,  G02B6/34 ,  G02F1/35 ,  H01S3/067 ,  G02B6/26

Abstract: The fibre-optic coupler includes two optical fibres which fibres which are fused together along a portion of their lengths to form a wavelength dependent coupling region. 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 fibre remains in it. The mode field diameter of the first coupler fibre is matched to that of the gain fibre and is smaller than that of the second coupler fibre. One end of the first coupler fibre is spliced to the gain fibre. The difference in mode field diameters between the couplers is sufficient create a difference in coupler fibre propagation constants in the coupling region which degrades the coupling of the lambda S signal. To overcome the difference in coupler fibre propagation constants in the coupling region, and thereby increase the coupled signal power to an acceptable level, a fibre characteristic, whose affect on MFD is insignificant, is modified in one of the coupler fibres.

公开(公告)号：DE68920270D1

公开(公告)日：1995-02-09

申请号：DE68920270

申请日：1989-10-16

Applicant: CORNING INC

Inventor： NEWHOUSE MARK ANDREW ,  NOLAN DANIEL ALOYSIUS ,  WEIDMAN DAVID LEE

IPC: G02B6/14 ,  G02B6/26 ,  G02B6/42 ,  G02B6/28

Abstract: Disclosed is a mode field modifier (40) which can be used in a fiber-to-fiber connector or a source-to-fiber connector. In a downtaper-type mode field modifier embodiment, the modifier comprises a modifier core (42) of refractive index n1 surrounded by first and second cladding layers (44, 46) having refractive indices n2 and n3, respectively. In an uptaper-type mode field modifier (60) embodiment, the modifier comprises a modifier core (56) of refractive index n1 surrounded by a cladding layer (58) having a refractive index n2. The refractive indices are such that n1 > n2 > n3. In both embodiments, there is a nonadiabatic taper (N, N ) intermediate the ends of the mode field modifier, whereby a substantial amount of mode coupling occurs therein.

公开(公告)号：AT116450T

公开(公告)日：1995-01-15

申请号：AT89310596

申请日：1989-10-16

Applicant: CORNING INC

Inventor： NEWHOUSE MARK ANDREW ,  NOLAN DANIEL ALOYSIUS ,  WEIDMAN DAVID LEE

IPC: G02B6/14 ,  G02B6/26 ,  G02B6/42 ,  G02B6/28

Abstract: Disclosed is a mode field modifier (40) which can be used in a fiber-to-fiber connector or a source-to-fiber connector. In a downtaper-type mode field modifier embodiment, the modifier comprises a modifier core (42) of refractive index n1 surrounded by first and second cladding layers (44, 46) having refractive indices n2 and n3, respectively. In an uptaper-type mode field modifier (60) embodiment, the modifier comprises a modifier core (56) of refractive index n1 surrounded by a cladding layer (58) having a refractive index n2. The refractive indices are such that n1 > n2 > n3. In both embodiments, there is a nonadiabatic taper (N, N ) intermediate the ends of the mode field modifier, whereby a substantial amount of mode coupling occurs therein.

公开(公告)号：AU6760990A

公开(公告)日：1991-06-13

申请号：AU6760990

申请日：1990-11-30

Applicant: CORNING INC

Inventor： MILLER WILLIAM JAMES ,  TRUESDALE CARLTON MAURICE ,  WEIDMAN DAVID LEE ,  YOUNG DONALD RAY JR

IPC: G02B6/28 ,  G02B6/287 ,  G02B6/255 ,  G02B6/26

Abstract: An achromatic fiber optic coupler of the type wherein first and second single-mode optical fibers, each having a core and a cladding, are fused together along a portion of the lengths thereof to form a coupling region. A matrix glass of lower index than the fiber claddings surrounds the coupling region. The fiber diameters are smaller in the coupling region than in the the remainder of the fibers. The refractive index n2 of the cladding of the first fiber is different from the refractive index n'_2 of the cladding of the second fiber, the difference between the refractive indices n2 and n'_2 being such that the coupler exhibits very little change in coupling ratio with wavelength over a band of wavelengths.

公开(公告)号：DE69527169T2

公开(公告)日：2002-12-12

申请号：DE69527169

申请日：1995-04-18

Applicant: CORNING INC

Inventor： KECK DONALD BRUCE ,  NOLAN DANIEL ALOYSIUS ,  WEIDMAN DAVID LEE

IPC: G02B6/122 ,  G02B6/26 ,  G02B6/28 ,  G02B6/34 ,  G02B6/42 ,  H01L31/173 ,  H04B10/12 ,  H04B10/135 ,  H04B10/14 ,  H04B10/2581 ,  G02B6/36

公开(公告)号：CA2028525C

公开(公告)日：2001-10-23

申请号：CA2028525

申请日：1990-10-25

Applicant: CORNING INC

Inventor： MILLER WILLIAM JAMES ,  TRUESDALE CARLTON MAURICE ,  WEIDMAN DAVID LEE ,  YOUNG DONALD RAY JR

IPC: G02B6/28 ,  G02B6/287

Abstract: An achromatic fiber optic coupler of the type wherein first and second single-mode optical fibers, each having a core and a cladding, are fused together along a portion of the lengths thereof to form a coupling region. A matrix glass of lower index than the fiber claddings surrounds the coupling region. The fiber diameters are smaller in the coupling region than in the the remainder of the fibers. The refractive index n2 of the cladding of the first fiber is different from the refractive index n~ of the cladding of the second fiber, the difference between the refractive indices n2 and n~ being such that the coupler exhibits very little change in coupling ratio with wavelength over a band of wavelengths.

公开(公告)号：DE69326135T2

公开(公告)日：2000-05-25

申请号：DE69326135

申请日：1993-12-06

Applicant: CORNING INC

Inventor： NOLAN DANIEL ALOYSIUS ,  WEIDMAN DAVID LEE

IPC: G02B6/28

Abstract: The achromatic fibre-optic coupler includes three single-mode optical fibres which are fused together along a portion of their lengths to form a coupling region. Each fibre includes a core and a cladding, the lowest refractive index of the fibre claddings being n2. The fibres are disposed in a triangular array in the coupling region. A matrix glass body of refractive index n3 surrounds the coupling region, n3 being lower than n2 by such an amount that the value of ~D2-3 is less than 0.125%, where ~D2-3 equals (n22?'-n32)/2n22.