公开(公告)号：AU1327701A

公开(公告)日：2001-04-23

申请号：AU1327701

申请日：2000-09-15

Applicant: CORNING INC

Inventor： BHAGAVATULA VENKATA A ,  GIROUX CYNTHIA B ,  HAWTOF DANIEL W

IPC: G02B6/02 ,  G02B6/036 ,  H04B10/17 ,  H04B10/29 ,  G02B6/00

公开(公告)号：CA2382957A1

公开(公告)日：2001-04-19

申请号：CA2382957

申请日：2000-09-15

Applicant: CORNING INC

Inventor： HAWTOF DANIEL W ,  GIROUX CYNTHIA B ,  BHAGAVATULA VENKATA A

IPC: G02B6/02 ,  G02B6/036 ,  H04B10/17 ,  H04B10/29 ,  G02B6/10 ,  G02B6/16 ,  H04B10/20 ,  H04J14/02

Abstract: Single mode optical fiber waveguides with reduced bending losses for wavelength range of 1300 nm to 1700 nm are disclosed. The extended ranges ar e achieved by altering the optical characteristics of the fiber, namely, the M AC number, the mode field diameter ("MFD"), and the cut-off wavelength. The single mode fibers disclosed exhibit a lower MFD and higher cut-off wavelength. In addition, optical fiber transmission systems, wave division multiplexing ("WDM") systems, and optical fiber ribbon cables are disclosed that incorporate the single mode optical fiber. Figure 2 shows the refractiv e index profile as a function of the fiber radius. Figure 6 illustrates a ribb on cable (700) with 4 fibers in a matrix material (708). Each fiber consists of a central core (702), a cladding layer (703), a primary (704) and a secondary polymer layer (705) and a colored ink coating layer (706).

公开(公告)号：AU1439900A

公开(公告)日：2000-04-03

申请号：AU1439900

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 between 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：BR9702051A

公开(公告)日：1998-06-09

申请号：BR9702051

申请日：1997-02-11

Applicant: CORNING INC

Inventor： BHAGAVATULA VENKATA A

IPC: G02B6/293 ,  G02B6/12 ,  G02B6/34 ,  G02B27/14 ,  G02F1/21 ,  H04B10/27 ,  H04B10/29 ,  H04B10/67 ,  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：AU1848497A

公开(公告)日：1997-08-28

申请号：AU1848497

申请日：1997-02-03

Applicant: CORNING INC

Inventor： BHAGAVATULA VENKATA A

IPC: G02B5/28 ,  G02B6/00 ,  G02B6/26 ,  G02B6/293 ,  G02B6/34 ,  G02B6/24

Abstract: An interference filter (10, 30, 50, 70, 90, 110, 130, 150, or 190) filters selected wavelengths by dividing an input beam into two or more intermediate beams having different optical path lengths and by recombining the intermediate beams into an output beam that is modified by interference between the intermediate beams. An optical path length difference generator (20, 40, 60, 80, 100, 120, 140, 160, or 200) varies the optical path lengths of the intermediate beams by changing the physical lengths of their paths or the refractive indices of the mediums in which they are conveyed. The optical path length generator (20) of one exemplary embodiment (10) includes a spacer plate (20) that is divided into elements (22 and 24) having different refractive indices for varying the optical path lengths of the intermediate beams. Another optical path length difference generator (140) is formed by a stack of partially reflective surfaces (144) that are spaced apart in the direction of beam propagation by at least one nominal wavelength for varying the physical path lengths between the intermediate beams.

公开(公告)号：CA2236970A1

公开(公告)日：1997-07-17

申请号：CA2236970

申请日：1997-01-06

Applicant: CORNING INC

Inventor： BHAGAVATULA VENKATA A

IPC: G02B6/28 ,  G02B6/12 ,  G02B6/293 ,  G02B6/34 ,  H04J14/02

Abstract: Wavelength dispersion in an optical demultiplexer (10) is accomplished by varying propagation constants of a central pathway (16) traverse to the direction of wavefront propagation through the central pathway (16). The propagation constant can be varied by changing the dimensions or refractive qualities of the central pathway, which can be formed as a common waveguide (36) or as plurality of individual waveguides (16).

公开(公告)号：CA2222071A1

公开(公告)日：1997-02-20

申请号：CA2222071

申请日：1996-08-08

Applicant: CORNING INC

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

IPC: G02B6/024 ,  C03B37/012 ,  C03B37/014 ,  G02B6/02 ,  G02B6/028 ,  G02B6/10 ,  G02B6/17 ,  C03B37/075

Abstract: A single mode optical waveguide having reduced polarization mode dispersion and a method of making such a waveguide is disclosed. Perturbations (6, 8) are introduced into the waveguide core (4) to couple power between the two polarization modes. A model calculation shows that the perturbation length may be of the order of the correlation length. The inventive waveguide is robust in that polarization mode dispersion is reduced even if perturbations (6, 8) are impressed on the fiber after manufacture.

公开(公告)号：EP0843832A4

公开(公告)日：1999-03-31

申请号：EP96936415

申请日：1996-08-08

Applicant: CORNING INC

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

IPC: G02B6/024 ,  C03B37/012 ,  C03B37/014 ,  G02B6/02 ,  G02B6/028 ,  G02B6/10 ,  G02B6/00 ,  C03B37/023

CPC classification number: G02B6/02285 ,  C03B37/01205 ,  C03B37/01493 ,  C03B2203/18 ,  C03B2203/20 ,  C03B2203/24 ,  C03B2203/30 ,  C03B2203/32 ,  C03B2203/36 ,  G02B6/105 ,  G02B2006/0209

Abstract: A single mode optical waveguide having reduced polarization mode dispersion and a method of making such a waveguide is disclosed. Perturbations (6, 8) are introduced into the waveguide core (4) to couple power between the two polarization modes. A model calculation shows that the perturbation length may be of the order of the correlation length. The inventive waveguide is robust in that polarization mode dispersion is reduced even if perturbations (6, 8) are impressed on the fiber after manufacture.

公开(公告)号：EP0843833A4

公开(公告)日：1998-11-25

申请号：EP96926753

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

CPC classification number: G02B6/02247 ,  C03B37/01205 ,  C03B2203/18 ,  C03B2203/20 ,  C03B2203/24 ,  C03B2203/36 ,  G02B6/02066 ,  G02B6/02285 ,  G02B6/105

Abstract: Disclosed is a single mode optical waveguide fiber having periodic perturbations (2) in the core to provide a birefringence which mixes the polarization modes of launched ligth. In addition, pertubations (4) are introduced into the core which serve to manage total dispersion. The total dispersion of preselected segments (6, 8) of the waveguide are caused to change sign so that the sum of products, total dispersion times length (13, 15), algebraically add to a preselected 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.

Abstract translation: 公开了一种单模光波导纤维，其在纤芯中具有周期扰动（2）以提供混合发射光的偏振模的双折射。 另外，将管理（4）引入到用于管理总分散的核心中。 使波导的预选段（6,8）的总色散发生符号变化，从而产品总色散时间长度（13,15）以代数方式增加到预选值。 两种不同的核心扰动类型用于控制偏振模色散和总色散。 还讨论了制作主波导的方法。

公开(公告)号：NO20071952L

公开(公告)日：2007-07-02

申请号：NO20071952

申请日：2007-04-17

Applicant: CORNING INC

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

IPC: G02B6/12 ,  G02B6/26 ,  G02B6/34

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.