Talal Azfar

US Patent:

6847751, Jan 25, 2005

Filed:

Aug 11, 2003

Appl. No.:

10/639212

Inventors:

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

Assignee:

Pacific Wave Industries, Inc. - El Segundo CA

International Classification:

G02B 626

US Classification:

385 16, 8 14, 8126, 8132, 8145

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:

20030103710, Jun 5, 2003

Filed:

Dec 5, 2001

Appl. No.:

10/010414

Inventors:

Daniel Chang - La Crescenta CA, US
Talal Azfar - Los Angeles CA, US
Harold Fetterman - Santa Monica CA, US
Joseph Michael - Los Angeles CA, US

International Classification:

G02F001/295

US Classification:

385/008000

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. 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 also enables a unique and advantageous router design comprising an active tuned arrayed waveguide grating and switching logic for controlling the grating.

US Patent:

20040071402, Apr 15, 2004

Filed:

Aug 11, 2003

Appl. No.:

10/639287

Inventors:

Daniel Chang - La Crescenta CA, US
Talal Azfar - Los Angeles CA, US
Harold Fetterman - Santa Monica CA, US
Joseph Michael - Los Angeles CA, US

International Classification:

G02B006/26

US Classification:

385/040000, 385/050000

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. 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 also enables a unique and advantageous router design comprising an active tuned arrayed waveguide grating and switching logic for controlling the grating.