Debra A Fleming

US Patent:

6403511, Jun 11, 2002

Filed:

Apr 17, 2001

Appl. No.:

09/835570

Inventors:

Debra Anne Fleming - Berkeley Heights NJ
David Wilfred Johnson - Bedminster NJ
Glen Robert Kowach - Edison NJ
Paul Joseph Lemaire - Madison NJ

Assignee:

Agere Systems Guardian Corp. - Allentown PA

International Classification:

C04B 3548

US Classification:

501102, 501103, 501104, 264653, 264660, 264681

Abstract:

Ceramic monoliths are described which exhibit tunable coefficients of thermal expansion from about -5 to -11Ã10 Â C. near ambient temperatures. These two-phase ceramics, which are fabricated, for example, by reactive sintering of WO and ZrO , consists of a matrix of ZrW O with inclusions of ZrO having diameters less than 10 m. Additives may increase the density of the monoliths to greater than 98% of the calculated density. Green body densities, pre-sintered particle size distribution, sintering atmosphere, microstructure, and mechanical properties are discussed. These ceramics may be used as substrates for thermally compensating fiber Bragg gratings.

US Patent:

6457329, Oct 1, 2002

Filed:

Dec 14, 2000

Appl. No.:

09/737069

Inventors:

Suhas Bhandarkar - Glen Gardner NJ
Debra Anne Fleming - Berkeley Heights NJ

Assignee:

Fitel USA Corp.

International Classification:

C03B 800

US Classification:

65 172, 65395, 65396, 501 12, 423338

Abstract:

A silica sol-gel fabrication process is provided which allows improved control of the shrinkage that takes place during the drying of a gel body. In particular, the invention makes it possible to attain extremely low shrinkage through the completion of the drying stage, e. g. , below 1% linear shrinkage, in relatively large sol-gel bodies of (dry weight) 1 kg or more, typically 10 kg or more, or even 40 kg or more, compared to the much higher shrinkages typically encountered. Specifically, use of a particular polymeric additive makes it possible for a gel body to experience linear shrinkage at least 55% less than an identical process without the polymeric additive.

US Patent:

6538614, Mar 25, 2003

Filed:

Apr 17, 2001

Appl. No.:

09/836024

Inventors:

Debra A. Fleming - Berkeley Heights NJ
George Earl Peterson - Warren NJ
John Thomson, Jr. - Spring Lake NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H01Q 1310

US Classification:

343767, 343770, 343822

Abstract:

An antenna structure including at least one planar antenna element. In place of a balun, the antenna structure further includes a slotline for coupling the planar antenna element with an unbalanced load.

US Patent:

6716488, Apr 6, 2004

Filed:

Jun 22, 2001

Appl. No.:

09/887938

Inventors:

Debra Anne Fleming - Berkeley Heights NJ
Gideon S. Grader - Haifa, IL
John Thomson, Jr. - Spring Lake NJ
Robert Bruce Van Dover - Maplewood NJ

Assignee:

Agere Systems Inc. - Allentown PA

International Classification:

H01F 100

US Classification:

427547, 427128, 427130, 427131, 427132, 427240, 427241, 427346, 427347, 4273722, 427404, 427548, 427598, 427599

Abstract:

A ferrite layer formation process that may be performed at a lower temperature than conventional ferrite formation processes. The formation process may produce highly anisotropic structures. A ferrite layer is deposited on a substrate while the substrate is exposed to a magnetic field. An intermediate layer may be positioned between the substrate and the ferrite to promote bonding of the ferrite to the substrate. The process may be performed at temperatures less than 300Â C. Ferrite film anisotropy may be achieved by embodiments of the invention in the range of about 1000 dyn-cm/cm to about 2Ã10 dyn-cm/cm.

US Patent:

52404889, Aug 31, 1993

Filed:

Aug 14, 1992

Appl. No.:

7/930125

Inventors:

Edwin A. Chandross - Murray Hill NJ
Debra A. Fleming - Lake Hiawatha NJ
David W. Johnson - Bedminster NJ
John B. MacChesney - Lebanon NJ
Frederick W. Walz - Plainfield NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

C03B 1906

US Classification:

65 311

Abstract:

Lowered cost fabrication including preparation of large bodies of void-free, high-silica glass, depends upon gellation of an aqueous sol of colloidal silica particles, followed by drying and firing of such gel. Freedom from cracks in the dried gel is the consequence of included polymeric material which wets the particles. The polymeric material is removed by thermal decomposition attended upon temperature attained in firing.

US Patent:

59872004, Nov 16, 1999

Filed:

Oct 27, 1997

Appl. No.:

8/957953

Inventors:

Debra Anne Fleming - Berkeley Heights NJ
Sungho Jin - Millington NJ
David Wilfred Johnson - Bedminster NJ
Paul Joseph Lemaire - Madison NJ
Thomas H. Tiefel - late of North Plain Field NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G02B 634
H04J 1400

US Classification:

385 37

Abstract:

A tunable fiber grating comprises a temperature-sensitive body secured to a fiber having a fiber grating region for transmitting thermally-induced strain to the grating. The amount of strain and hence the degree of wavelength tuning are controlled by adjusting the temperature of the temperature-sensitive body, wherein the extent of adjustment is preferably pre-determined according to feedback from a wavelength detector. Large thermal strains obtainable with the present invention allow a wide range of wavelength tuning with a relatively small and convenient temperature change near ambient temperature. In a preferred embodiment, the temperature-sensitive body is cylindrical and comprised of a nickel-titanium alloy bonded to the grating. In alternative arrangements, the thermal strain effect can be amplified. An add/drop multiplexer employing the tunable gratings is also described.

US Patent:

58027025, Sep 8, 1998

Filed:

Sep 4, 1997

Appl. No.:

8/923591

Inventors:

Debra Anne Fleming - Lake Hiawatha NJ
David Wilfred Johnson - Bedminster NJ
Vincent George Lambrecht - Millington NJ
Henry Hon Law - Berkeley Heights NJ
David Joseph Liptack - Hoboken NJ
Apurba Roy - Rockwall TX
John Thomson - Spring Lake NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H01F 4104

US Classification:

29608

Abstract:

The method of making a metallized magnetic substrate for devices including a magnetic component involves providing an unfired ceramic body. In one exemplary embodiment, the method further involves making one or more vias through the ceramic body, coating the via side walls with conductive material, forming an aperture through the ceramic body, such that an aperture edge intersects the via, and metallizing the unfired ceramic body such that a conductive pathway is formed that includes the conductive material in the via. Finally, the metallized unfired ceramic body is fired in conventional fashion, optionally followed by deposition of additional conductor material.

US Patent:

56945035, Dec 2, 1997

Filed:

Sep 9, 1996

Appl. No.:

8/707879

Inventors:

Debra Anne Fleming - Berkeley Heights NJ
David Wilfred Johnson - Bedminster NJ
Paul Joseph Lemaire - Madison NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G02B 634

US Classification:

385 37

Abstract:

Conventional optical gratings are relatively temperature sensitive. This sensitivity is generally undesirable but can be reduced or eliminated by attaching the grating to a support member having a negative coefficient of thermal expansion. Exemplarily the member comprises Zr-tungstate and/or Hf-tungstate. The thermal expansion can be tailored by admixture of positive expansion coefficient material (e. g. , Al. sub. 2 O. sub. 3, SiO. sub. 2) to the negative expansion coefficient material (e. g. , ZrW. sub. 2 O. sub. 8), or by a variety of other techniques.