Joseph N Michael

US Patent:

6348992, Feb 19, 2002

Filed:

Apr 18, 2000

Appl. No.:

09/551685

Inventors:

Cheng Zhang - Los Angeles CA
Harold R. Fetterman - Pacific Palisades CA
William Steier - San Marino CA
Joseph Michael - Los Angeles CA

Assignee:

Pacific Wave Industries, Inc. - Los Angeles CA

International Classification:

G02F 100

US Classification:

359321, 252582, 359345

Abstract:

Sterically stabilized polyene-bridged second-order nonlinear chromophores and devices incorporating the same are embodied in a variety of chromophore materials, and particularly in chromophore materials are configured within an oxygen-free operating environment. An exemplary preferred chromophore includes an electron donor group, an electron acceptor group and a -conjugate bridge structure therebetween. The bridge is a polyene structure having a five-, six- or seven-membered ring to lock one carbon-carbon double bond. The bridge contains an unlocked conjugate diene unit which connects the bridge ring and the acceptor. Another exemplary preferred chromophore includes an electron donor group, an electron acceptor group and a ring-locked bridge structure between the electron donor group and the electron acceptor group. The bridge structure includes a fused double-or triple-ring structure which functions to lock two or three double bonds. The bridge also contains an unlocked conjugate diene unit to connect the the bridge ring and the acceptor.

US Patent:

6555027, Apr 29, 2003

Filed:

Jul 3, 2001

Appl. No.:

09/898625

Inventors:

Chuanguang Wang - Los Angeles CA
Cheng Zhang - Los Angeles CA
Harold R. Fetterman - Pacific Palisades CA
William Steier - San Marino CA
Joseph Michael - Los Angeles CA

Assignee:

Pacific Wave Industries, Inc. - Los Angeles CA

International Classification:

F21V 900

US Classification:

252582, 359328

Abstract:

Second-order nonlinear optical (NLO) polyene-based chromophores sterically stabilized with a dioxine ring and NLO chromophores containing bithiophene derivatives, and devices incorporating the same, are disclosed. An exemplary preferred chromophore includes an aminophenyl electron donor group and a dioxine-containing bridge structure. Another exemplary preferred chromophore includes a ring-locked bridge structure with a dioxine unit and a bithiophene unit. Another exemplary preferred chromophore includes a bridge structure with a bithiophene unit and an isophorone-derived cyclohexene unit.

US Patent:

6558585, May 6, 2003

Filed:

Nov 2, 2000

Appl. No.:

09/704955

Inventors:

Hua Zhang - Los Angeles CA
William Steier - San Marino CA
Harold R. Fetterman - Pacific Palisades CA
Joseph Michael - Los Angeles CA

Assignee:

Pacific Wave Industries, Inc. - Los Angeles CA

International Classification:

B29D 1100

US Classification:

264 127, 205122, 216 24, 264435, 264449, 264 85, 385 3

Abstract:

Method for manufacturing an electro-optic polymer waveguide device including the step of electrode poling an electro-optic polymer material of the device in an oxygen-free environment. In a preferred embodiment, the electrode poling is performed at a temperature close to a glass transition temperature of the electro-optic polymer material.

US Patent:

6616865, Sep 9, 2003

Filed:

Apr 11, 2000

Appl. No.:

09/546930

Inventors:

Cheng Zhang - Los Angeles CA
Harold R. Fetterman - Pacific Palisades CA
William Steier - San Marino CA
Joseph Michael - Los Angeles CA

Assignee:

Pacific Wave Industries, Inc. - Beverly Hills CA

International Classification:

F21V 900

US Classification:

252582, 359328

Abstract:

Sterically stabilized second-order nonlinear optical chromophores and devices incorporating the same are embodied in a variety of chromophore materials. An exemplary preferred chromophore includes an electron donor group, an electron acceptor group and a ring-locked bridge structure therebetween, with the bridge structure being directly connected to the electron donor via a single bond. Another exemplary preferred chromophore includes an electron donor group, an electron acceptor group and a ring-locked bridge structure between the electron donor group and the electron acceptor group, with two free double bonds, one located between the donor and the bridge and the other located between the (fused) ring bridge and the acceptor. Another exemplary preferred chromophore includes an electron donor group, an electron acceptor group, and a bridge structure therebetween, with the chromophores having no carbon-carbon double bond between the donor and the (fused) ring bridge. In this class, there is only one unlocked carbon-carbon double bond between the (fused) ring bridge and the acceptor.

US Patent:

6643419, Nov 4, 2003

Filed:

Dec 5, 2001

Appl. No.:

10/010414

Inventors:

Daniel H. Chang - La Crescenta CA
Talal Azfar - Los Angeles CA
Harold R. Fetterman - Santa Monica CA
Joseph Michael - Los Angeles CA

Assignee:

Pacific Wave Industries, Inc. - Los Angeles CA

International Classification:

G02B 626

US Classification:

385 14, 385132, 385 8, 385145, 385126

Abstract:

A structure for effecting a transition from a passive waveguide to an active waveguide or from an active waveguide to a passive waveguide of the present invention. The inventive device comprises a first cladding; a first core disposed within the first cladding; and a ground plane disposed over the first cladding and the core. A second cladding is disposed on the ground plane. A second core is disposed on the second cladding. A third cladding is disposed on the second cladding and the second core and an electrode is disposed on top of the third cladding. The inventive structure enables the construction of a novel an advantageous switch comprising an input port; an output port; and plural waveguides disposed between the input port and the output port. Each waveguide includes a first cladding; a first core disposed within the first cladding; and a ground plane disposed over the first cladding and the core. A second cladding is disposed on the ground plane.

US Patent:

6652779, Nov 25, 2003

Filed:

Oct 5, 2000

Appl. No.:

09/679937

Inventors:

Cheng Zhang - Los Angeles CA
Harold R. Fetterman - Pacific Palisades CA
William Steier - San Marino CA
Joseph Michael - Los Angeles CA

Assignee:

Pacific Wave Industries, Inc. - Beverly Hills CA

International Classification:

F21V 900

US Classification:

252582, 359328

Abstract:

Polymers containing polyene-bridged second-order nonlinear optical chromophores and devices incorporating the same are disclosed. The chromophores are functionalized and incorporated into a series of polymers ranging from linear polyesters, linear poly[ester-imide]s, chain-crosslinked polyesters/poly[ester-imide]s, to crosslinked star-shaped/dendritic macromolecules. An exemplary preferred polymer is a linear chain polymer formed from a dihydroxy-functionalized polyene-bridged chromophore, a diacid or diacid dichloride, and a diol. In a preferred embodiment, the diol structure also includes at least one imide group. Another exemplary preferred polymer is a crosslinked polymer comprised of a linear chain polymer formed from a dihydroxy-functionalized polyene-bridged chromophore, a diacid or diacid dichloride and a diol. The crosslinking is realized by thermally induced cyclolization of trifluorovinylethers which are attached to the diol co-monomer and/or chromophore in the linear chain polymer chain. In a preferred embodiment, the diol structure also includes at least one imide group.

US Patent:

6735013, May 11, 2004

Filed:

Dec 5, 2001

Appl. No.:

10/008926

Inventors:

Ilya Y. Poberezhskiy - Los Angeles CA
Harold R. Fetterman - Santa Monica CA
Joseph Michael - Los Angeles CA

Assignee:

Pacific Wave Industries, Inc. - El Segundo CA

International Classification:

G02F 1365

US Classification:

359332, 359326, 385 2

Abstract:

A frequency shifting device. The present invention provides a device and method for shifting a frequency of an optical signal comprising the steps of providing a layer of optically refractive material having a moving refractive boundary responsive to an application of an electrical signal. The inventive device includes a layer of optically refractive material having a refractive boundary responsive to an application of an electrical signal and an arrangement for providing an electrical signal to the layer to effect a predetermined frequency shift of an optical signal passing therethrough. In an illustrative embodiment, the device includes an active polymer layer, an optically conductive first cladding disposed beneath the active polymer layer, and a second cladding layer disposed above the active polymer layer, a microstrip line disposed over the second cladding layer and a ground plane beneath the first cladding layer.

US Patent:

6741762, May 25, 2004

Filed:

Dec 5, 2001

Appl. No.:

10/010401

Inventors:

Jan Grinberg - Los Angeles CA
Harold R. Fetterman - Santa Monica CA
Joseph Michael - Los Angeles CA

Assignee:

Pacific Wave Industries, Inc. - El Segundo CA

International Classification:

G02F 1035

US Classification:

385 2, 385131, 359245, 359254

Abstract:

An electro-optical modulator and a method for biasing a Mach-Zehnder modulator. The inventive modulator includes a layer of material at least partially transparent to electromagnetic energy. A first conductive layer is disposed on a first surface of the layer of at least partially transparent material. A second conductive layer is disposed on a second surface of the layer of at least partially transparent material. A layer of insulating material is disposed on the second conductive layer and a third conductive layer is disposed on the layer of insulating material. In the illustrative application, the modulator is a Mach-Zehnder modulator. A biasing potential is applied to the second conductive layer of the modulator and a modulating voltage is applied across the first and the third conductive layers.