Raymond J Wolfe

US Patent:

52889980, Feb 22, 1994

Filed:

Jan 6, 1993

Appl. No.:

8/001233

Inventors:

Robert E. Betzig - Chatham NJ
Ernst M. Gyorgy - Madison NJ
Jay K. Trautman - Chatham NJ
Raymond Wolfe - New Providence NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

G02B 2106

US Classification:

25022726

Abstract:

An optical system useful, e. g. , for near-field scanning optical microscopy is provided. The system incorporates a probe having improved properties. In one embodiment, the probe comprises a tapered and partially metallized portion of a single-mode optical fiber.

US Patent:

43576842, Nov 2, 1982

Filed:

Nov 3, 1980

Appl. No.:

6/203354

Inventors:

Dirk J. Muehlner - Berkeley Heights NJ
Terence J. Nelson - New Providence NJ
Raymond Wolfe - New Providence NJ

Assignee:

Bell Telephone Laboratories, Incorporated - Murray Hill NJ

International Classification:

G11C 1908

US Classification:

365 36

Abstract:

Transfer between paths in ion-implanted magnetic bubble memories has been achieved without the use of transfer conductors. The transfer mechanism takes advantage of the three-fold anisotropy of the implanted drive layer which makes it possible for bubbles to pass freely through gaps in one direction while being obstructed from passing through in the other direction. Transfer is controlled by a brief reversal of the direction of rotation of the in-plane field. In one embodiment, a bidirectional transfer gate is employed. Configurations using unidirectional gates and hybrid gates using conductor and reverse-rotation controlled transfer are also shown.

US Patent:

43429629, Aug 3, 1982

Filed:

Apr 21, 1980

Appl. No.:

6/142013

Inventors:

Raymond Wolfe - New Providence NJ

Assignee:

Bell Telephone Laboratories, Incorporated - Murray Hill NJ

International Classification:

G01N 2772
G01R 3312

US Classification:

324232

Abstract:

The coercivity of materials that are capable of supporting single wall magnetic domains are measured by an expedient and accurate technique. This technique requires that the material be placed in a static magnetic field having a gradual spatial gradient. Finger shaped domains produced in the material are then modulated by introduction of an AC magnetic field. Coercivity is obtained by measuring the distance the finger domains move due to the AC field.

US Patent:

49520148, Aug 28, 1990

Filed:

Apr 17, 1989

Appl. No.:

7/339541

Inventors:

Robert A. Lieberman - New Providence NJ
Raymond Wolfe - New Providence NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

G02B 530

US Classification:

350 9612

Abstract:

An optical system, useful as a magnetometer and as a polarization contoller, is disclosed. The system includes a source of electromagnetic radiation, a detector of electromagnetic radiation, and a magnetizable medium via which the source and detector communicate with one another. The system further includes apparatus for forming at least two adjacent magnetic domains separated by at least one domain wall.

US Patent:

42766141, Jun 30, 1981

Filed:

Dec 3, 1979

Appl. No.:

6/099556

Inventors:

Terence J. Nelson - New Providence NJ
Raymond Wolfe - New Providence NJ

Assignee:

Bell Telephone Laboratories, Incorporated - Murray Hill NJ

International Classification:

G11C 1908

US Classification:

365 36

Abstract:

A gap between sets of contiguous discs defined by unimplanted regions in an otherwise ion-implanted bubble layer allows a merge function to be achieved. The alignment of the gap axis with an axis of symmetry of the bubble layer and the width of the gap are important considerations in the performance of the merge.

US Patent:

46716211, Jun 9, 1987

Filed:

Apr 29, 1985

Appl. No.:

6/728669

Inventors:

Joseph F. Dillon - Morristown NJ
John Hegarty - Gillette NJ
Raymond Wolfe - New Providence NJ

Assignee:

American Telephone and Telegraph Company, AT&T Bell Laboratories

International Classification:

G02B 2700

US Classification:

350403

Abstract:

An optical system, e. g. , an optical fiber communication system or an optical mass storage device, which includes a linearly birefringent polarization rotator useful in an optical isolator or optical circulator, is disclosed. The rotator, which compensates for the effects of linear birefringence and is substantially antireciprocal, includes two or more material regions which are capable of subjecting incident light to elliptic birefringences. However, the sign and/or magnitude of the linear, or the sign and/or magnitude of the circular, components of the elliptic birefringences differ from region to region. Moreover, the length of each region, except the first or last region, is substantially equal to one-half the birefringent period of the region. The length of the first or last region, by contrast, is substantially equal to one-quarter the birefringent period of the region.

US Patent:

61727911, Jan 9, 2001

Filed:

Jun 4, 1999

Appl. No.:

9/325870

Inventors:

Douglas M. Gill - Hoboken NJ
Dale Conrad Jacobson - Allamuchy NJ
Raymond Wolfe - New Providence NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G02F 103

US Classification:

359249

Abstract:

The specification describes a Mach-Zehnder electro-optic modulator device in which the ridge containing the waveguides in the interactive electro-optic regions have re-entrant sidewalls. This shifts the peak in the RF field profile to below the surface of the ridge and closer to the peak of the optical field, thereby producing a device with reduced drive voltage.

US Patent:

47623845, Aug 9, 1988

Filed:

Aug 30, 1985

Appl. No.:

6/771016

Inventors:

John Hegarty - Plainfield NJ
Raymond Wolfe - New Providence NJ

Assignee:

American Telephone and Telegraph Company, AT&T Bell Laboratories - Murray Hill NJ

International Classification:

G02B 610
G02B 2700

US Classification:

350 9612

Abstract:

An optical system, e. g. , an optical fiber communication system or an optical mass storage device, which includes a linearly birefringent polarization rotator useful in an optical isolator or optical circulator, is disclosed. The rotator, which compensates for the effects of linear birefringence and is substantially antireciprocal, includes two or more material regions which are capable of subjecting incident light to elliptic birefringences. However, the sign and/or magnitude of the linear, or the sign and/or magnitude of the circular, components of the elliptic birefringences differ from region to region. Moreover, the length of each region, except the first or last region, is substantially equal to one-half the birefringent period of the region. The length of the first or last region, by contrast, is substantially equal to one-quarter the birefringent period of the region.