公开(公告)号：CA2582458A1

公开(公告)日：2006-04-20

申请号：CA2582458

申请日：2005-10-04

Applicant: CORNING INC

Inventor： SUTHERLAND JAMES S ,  BHAGAVATULA VENKATA A ,  GARNER SEAN M

IPC: G02B6/12 ,  G02B6/122 ,  G02B6/26

Abstract: A transverse closed-loop fiber resonator ( 10 ) includes an inner cladding ( 102 ) having a surface ( 300 ) peripherally forming a closed-loop shape for confining light to the surface ( 300 ). The inner cladding has a first diameter thickness ( 104 ) and a first index of refraction profile in a cross-sectional portion of the transverse closed-loop fiber resonator ( 10 ). A ringed-core ( 120 ) corresponding to the closed-loop shape is disposed on the corresponding surface of the inner cladding ( 102 ). The ringed-core ( 120 ) has a second thickness ( 124 ) of material thinner than the first diameter thickness ( 104 ), and a second index of refraction profile greater than the first index of the inner cladding by an index delta in the cross-sectional portion of the transverse closed-loop fiber resonator such that the ringed-core can guide light within the ringed-core traversely around the closed-loop shape.

公开(公告)号：AU6824401A

公开(公告)日：2002-02-13

申请号：AU6824401

申请日：2001-06-06

Applicant: CORNING INC

Inventor： BHAGAVATULA VENKATA A ,  BORRELLI NICHOLAS F ,  DAVIS MONICA K ,  MURPHY EDWARD F

IPC: C03B19/02 ,  C03B32/00 ,  C03C3/064 ,  C03C3/091 ,  C03C4/08 ,  C03C17/34 ,  C03C23/00 ,  G02B5/18 ,  G02B6/02 ,  G02B6/12 ,  G02B6/124 ,  G02B6/125 ,  G02B6/13 ,  G02B6/293 ,  G02B6/34 ,  H01S5/125 ,  G02B6/28

公开(公告)号：ID29143A

公开(公告)日：2001-08-02

申请号：ID20002504

申请日：1999-04-14

Applicant: CORNING INC

Inventor： BHAGAVATULA VENKATA A ,  EVANS ALAN F

IPC: G02B6/02 ,  G02B6/34 ,  H01S3/06 ,  H01S3/10 ,  H04B10/02 ,  H04B10/18 ,  G02B6/16

Abstract: A unitary dispersion managed waveguide fiber with distributed amplification and a system incorporating the waveguide fiber are disclosed. Total dispersion along the waveguide fiber changes from positive to negative along the length of the waveguide over a transmission wavelength range. Distributed amplification is provided by stimulated emission of a dilute concentration of a rare earth dopant in the waveguide, by Raman effects or by both.

公开(公告)号：AU719957B2

公开(公告)日：2000-05-18

申请号：AU7243098

申请日：1997-12-04

Applicant: CORNING INC

Inventor： BHAGAVATULA VENKATA A

IPC: G02B6/26 ,  G02B6/122 ,  G02B6/124 ,  G02B6/30 ,  G02B6/34 ,  G02B6/36

公开(公告)号：AU5680599A

公开(公告)日：2000-03-27

申请号：AU5680599

申请日：1999-08-20

Applicant: CORNING INC

Inventor： BHAGAVATULA VENKATA A ,  HAWK ROBERT M

IPC: C03B37/012 ,  G02B6/02 ,  G02B6/036 ,  G02B6/17 ,  G02B6/22

Abstract: Disclosed are a single mode waveguide fiber and a multimode waveguide fiber which have a radially non-uniform and azimuthally asymmetric core, and methods of making such a waveguide fiber. This asymmetry provides additional degrees of freedom for use in forming a waveguide having particular performance characteristics.

公开(公告)号：CA2344200A1

公开(公告)日：2000-03-23

申请号：CA2344200

申请日：1999-08-10

Applicant: CORNING INC

Inventor： BHAGAVATULA VENKATA A

IPC: G02B6/02 ,  B29D20060101 ,  G02B20060101 ,  G02B1/00 ,  G02B6/036 ,  G08C20060101

Abstract: Optical pathways along optical fibers, including multiple cores or multiple modes, are arranged with positive and negative dispersion characteristics. Coupling or connecting mechanisms regulate relative lengths of travel betwee n the pathways having different dispersion characteristics so the total dispersion of the combined pathways approaches zero dispersion over a range of signal wavelengths intended for transmission.

公开(公告)号：CA2342339A1

公开(公告)日：2000-03-16

申请号：CA2342339

申请日：1999-08-20

Applicant: CORNING INC

Inventor： BHAGAVATULA VENKATA A ,  HAWK ROBERT M

IPC: C03B37/012 ,  G02B6/02 ,  G02B6/036 ,  G02B6/18 ,  G02B6/22

Abstract: Disclosed are a single mode waveguide fiber and a multimode waveguide fiber which have a radially non-uniform and azimuthally asymmetric core, and metho ds of making such a waveguide fiber. This asymmetry provides additional degrees of freedom for use in forming a waveguide having particular performance characteristics.

公开(公告)号：HU9901435A2

公开(公告)日：1999-08-30

申请号：HU9901435

申请日：1997-02-11

Applicant: CORNING INC

Inventor： BHAGAVATULA VENKATA A

IPC: G02B6/293 ,  G02B6/12 ,  G02B6/34 ,  G02B27/14 ,  G02F1/21 ,  H04B10/02 ,  H04J14/00 ,  H04J14/02

Abstract: Optical signals are dispersed according to their wavelength by an optical path length difference generator that couples a single pathway conveying a plurality of different wavelength signals to multiple pathways separately conveying the different wavelength signals. The optical path length generator can be formed by a reflective stack having a plurality of partially reflective surfaces for reflecting successive portions of the energy of each of the different wavelength signals along different length optical paths.

公开(公告)号：CA2288033A1

公开(公告)日：1998-11-05

申请号：CA2288033

申请日：1998-04-14

Applicant: CORNING INC

Inventor： BHAGAVATULA VENKATA A ,  CHOWDHURY DIPAKBIN Q

IPC: G02B6/02 ,  G02B6/34 ,  G02B6/00

Abstract: Disclosed is a dispersion managed optical waveguide fiber. The power loss due to four wave mixing is kept low by making the waveguide from sub-lengths of fiber which have non-zero dispersion. The sign of the total dispersion of the sub-lengths is made to alternate along the length of the waveguide, thereby allowing the total dispersion of the waveguide to be managed to a pre-selected target value. It has been discovered that the best performance is obtained when the zero dispersion wavelengths of the sub-lengths are widely and asymmetrically separated. Advantages are realized when the core refractive index profil is changed for sub-lengths having total dispersion of different sign.

公开(公告)号：AU698533B2

公开(公告)日：1998-10-29

申请号：AU6678796

申请日：1996-07-22

Applicant: CORNING INC

Inventor： ANTOS ALFRED J ,  BHAGAVATULA VENKATA A ,  CHOWDHURY DIPAKBIN Q ,  NOLAN DANIEL A

IPC: G02B6/024 ,  C03B37/012 ,  C03B37/02 ,  G02B6/02 ,  G02B6/028 ,  G02B6/10 ,  G02B6/17

Abstract: Disclosed is a single mode optical waveguide fiber having periodic perturbations in the core to provide a birefringence which mixes the polarization modes of launched light. In addition, perturbations are introduced into the core which serve to manage total dispersion. The total dispersion of pre-selected segments of the waveguide are caused to change sign so that the sum of products, total dispersion times length, algebraically add to a pre-selected value. The two distinct core perturbation types serve to control both polarization mode dispersion and total dispersion. Methods for making the subject waveguide are also discussed.