公开(公告)号：JPH08320419A

公开(公告)日：1996-12-03

申请号：JP11433296

申请日：1996-04-12

Applicant: CORNING INC

Inventor： BERKEY GEORGE E ,  BHAGAVATULA VENKATA A ,  JONES PETER C ,  KECK DONALD B ,  LIU YANMING ,  MODAVIS ROBERT A ,  MORROW ALAN J ,  NEWHOUSE MARK A ,  NOLAN DANIEL A

IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018 ,  C03B37/02 ,  C03B37/027 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02B6/10 ,  G02B6/18 ,  G02B6/22

Abstract: PROBLEM TO BE SOLVED: To provide a single mode light waveguide fiber designed to restrict a power penalty due to four optics mixtures and a manufacturing method of that waveguide. SOLUTION: A characteristic change such as radius (diameter 83, 84) or refractive index, for example, of a waveguide fiber core gives all divergence along the length of a waveguide. An algebraic summation of multiples of the length and all divergence is controlled to a pre-selected value toward each waveguide constituting a system link. When the size and the small length part of the change of all divergence is properly selected, a system link with which a signal advances by a short distance in a waveguide part having all divergence close to zero is obtained. However, the change of all divergence gives the system link generating a distributed effect pre-selected for the signals in the wavelength range pre-selected. The distributed effect against the signals can be selected to be substantially zero. A veriety of techniques for manufacture of DM fibers is disclosed.

公开(公告)号：JPH1152299A

公开(公告)日：1999-02-26

申请号：JP14754598

申请日：1998-05-28

Applicant: CORNING INC

Inventor： COOK THOMAS A ,  MODAVIS ROBERT A

IPC: G02B6/00 ,  G02B5/18 ,  G02B6/02 ,  G02B27/46 ,  G02B6/10

Abstract: PROBLEM TO BE SOLVED: To make it possible to obtain a reflectivity side lobe sufficiently suppressed with respect to a reflectivity band and to manufacture good gratings by consisting of a light diverting part of a reflection surface and a non-reflection surface and non-absorptively diverging and parting the higher dimension space frequency component in the outer peripheral part of a laser beam from the central axis of the laser beam by the reflection surface. SOLUTION: The space filter 20 comprises the light diverting member 22 of the single substance which is formed of a transparent non-absorptive optical material and consists of a preferably circular aperture. The aperture has the non-reflection surface 26 and the reflection surface 28. The central axis 31 and central part 38 of the incident laser beam 24 pass the aperture in the central part of the aperture. The outer peripheral part 40 is made incident on the light diverting member 22, passes the non-reflection surface 26 toward the reflection surface 28 where the unnecessary higher dimension space frequency component of the outer peripheral part 40 is diverged from the center of the aperture and the central axis 31 of the incident laser beam 24. The totally internal reflection is preferably used for this purpose.

公开(公告)号：WO9739368A2

公开(公告)日：1997-10-23

申请号：PCT/US9706002

申请日：1997-04-11

Applicant: CORNING INC ,  KECK DONALD B ,  MILLER WILLIAM J ,  MODAVIS ROBERT A ,  NOLAN DANIEL A

Inventor： KECK DONALD B ,  MILLER WILLIAM J ,  MODAVIS ROBERT A ,  NOLAN DANIEL A

IPC: G02B6/287 ,  G02B6/28 ,  G02B6/34 ,  G02B

CPC classification number: G02B6/29352

Abstract: A Mach-Zehnder filter is provided with a strongly aperiodic transfer function including a broad, sharply defined passband. The filter can be used in conjunction with optical amplifiers.

Abstract translation: Mach-Zehnder滤波器具有非常强的非周期性传递函数，包括一个宽而清晰的通带。 滤波器可以与光放大器配合使用。

公开(公告)号：AU6359100A

公开(公告)日：2001-04-17

申请号：AU6359100

申请日：2000-07-21

Applicant: CORNING INC

Inventor： CARBERRY JOEL P ,  CHEN GANG ,  KNOWLES PETER ,  KOHNKE GLENN E ,  MILLER WILLIAM J ,  MODAVIS ROBERT A ,  WELLER-BROPHY LAURA A

IPC: G02B6/00 ,  G02B6/38 ,  G02B6/34

公开(公告)号：BR9801659A

公开(公告)日：1999-09-21

申请号：BR9801659

申请日：1998-05-18

Applicant: CORNING INC

Inventor： COOK THOMAS A ,  MODAVIS ROBERT A

IPC: G02B6/00 ,  G02B5/18 ,  G02B6/02 ,  G02B27/46

Abstract: The invention comprises a spatial filter and a method of spatially filtering a laser beam, particularly a high power laser beam. High spatial frequency light is nonabsorptively diverted away from low spatial frequencies. The invention provides a method of writing gratings in optical waveguide fiber that results in improved grating performance.

公开(公告)号：AU2922097A

公开(公告)日：1997-11-07

申请号：AU2922097

申请日：1997-04-11

Applicant: CORNING INC

Inventor： KECK DONALD B ,  MILLER WILLIAM J ,  MODAVIS ROBERT A ,  NOLAN DANIEL A

IPC: G02B6/287 ,  G02B6/28 ,  G02B6/34 ,  G02B5/00

Abstract: A Mach-Zehnder filter is provided with a strongly aperiodic transfer function including a broad, sharply defined pass band. The filter can be used in conjunction with optical amplifiers.

公开(公告)号：CA2215662A1

公开(公告)日：1997-07-31

申请号：CA2215662

申请日：1997-01-17

Applicant: CORNING INC

Inventor： COOK THOMAS A ,  MODAVIS ROBERT A

IPC: G02B6/13 ,  C03B37/023 ,  G02B5/18 ,  G02B6/02 ,  G02B6/10 ,  G02B6/34 ,  G02F1/225

Abstract: Apparatus for forming a refractive index grating in a waveguide (10) in accordance with the invention includes a waveguide (10) formed from a material that changes its index of refraction when exposed to a beam of optical radiation (20), a source of coherent optical radiation for forming a beam of radiation, a mirror (12) arranged to intercept a first part of a beam and to reflect the first part of the beam through an angle, and a phase delay plate (22) arranged to intercept a second part of the beam for delaying the second part of the beam propagating through the plate, in which the mirror (12) and the phase delay plate (22) are arranged so that the first part of the beam and the second delayed part of the beam form an interference pattern on the waveguide for changing the index of refraction of the waveguide, in a pattern corresponding to the interference pattern for forming an index grating in the waveguide (10).

公开(公告)号：CA2224652A1

公开(公告)日：1997-06-19

申请号：CA2224652

申请日：1996-12-06

Applicant: CORNING INC

Inventor： MODAVIS ROBERT A ,  COOK THOMAS A

IPC: G02B6/122 ,  G02B6/24 ,  G02B6/28 ,  G02B6/293 ,  G02F1/295 ,  G02B6/35

Abstract: An optical coupler (10) has two fibers (20, 30) that are adjacent each other in a coupling region (12). One of the fibers has a clad doped with a photosensitive glass, such as germania. The photosensitive glass is exposed to suitable radiation to alter the index of refraction of fiber and tune the coupler (110) to the selected coupling frequency.

公开(公告)号：DE69822362D1

公开(公告)日：2004-04-22

申请号：DE69822362

申请日：1998-04-29

Applicant: CORNING INC

Inventor： COOK THOMAS A ,  MODAVIS ROBERT A

IPC: G02B6/00 ,  G02B5/18 ,  G02B6/02 ,  G02B27/46

Abstract: The invention comprises a spatial filter and a method of spatially filtering a laser beam, particularly a high power laser beam. High spatial frequency light is nonabsorptively diverted away from low spatial frequencies. The invention provides a method of writing gratings in optical waveguide fiber that results in improved grating performance.

公开(公告)号：BR9914872A

公开(公告)日：2001-07-03

申请号：BR9914872

申请日：1999-10-07

Applicant: CORNING INC

Inventor： BHATIA VIKRAM ,  MODAVIS ROBERT A

IPC: G02B6/122 ,  G02B5/18 ,  G02B6/02 ,  G03F7/20 ,  G02B6/34

Abstract: Optical gratings having a range of possible Bragg wavelengths can be produced using a single phase mask by exposing the mask to a non-collimated spatially filtered beam of light. A spatial filter removes high spatial frequency components from the beam, and a focusing system directs the filtered beam to a phase mask. A rate at which the beam is focused and a spacing between the phase mask and a photo-sensitive waveguide are varied to produce gratings in the waveguide having a range of possible periods.