Michael J Larson

US Patent:

6419404, Jul 16, 2002

Filed:

Jun 30, 2000

Appl. No.:

09/607992

Inventors:

Robert J. Deri - Pleasanton CA
Michael D. Pocha - Livermore CA
Michael C. Larson - Goleta CA
Henry E. Garrett - Livermore CA

Assignee:

The Regents of the University of California - Oakland CA

International Classification:

G02B 636

US Classification:

385 89, 385 39, 385 49, 385 91

Abstract:

A compact multiwavelength transmitter module for multimode fiber optic ribbon cable, which couples light from an MÃN array of emitters onto N fibers, where the M wavelength may be distributed across two or more vertical-cavity surface-emitting laser (VCSEL) chips, and combining emitters and multiplexer into a compact package that is compatible with placement on a printed circuit board. A key feature is bringing together two emitter arrays fabricated on different substratesâeach array designed for a different wavelengthâinto close physical proximity. Another key feature is to compactly and efficiently combine the light from two or more clusters of optical emitters, each in a different wavelength band, into a fiber ribbon.

US Patent:

20020075920, Jun 20, 2002

Filed:

Dec 15, 2000

Appl. No.:

09/738534

Inventors:

Sylvia Spruytte - Palo Alto CA, US
Michael Larson - Walnut Creek CA, US
James Harris - Stanford CA, US
Christopher Coldren - Sunnyvale CA, US

International Classification:

H01S005/00
H01S003/08

US Classification:

372/045000, 372/046000, 372/096000

Abstract:

In an active region of an optical-electronic semiconductor device, nitrogen is incorporated in a barrier adjacent a GaNAs-based (e.g., GaInNAs) quantum well to improve device performance at wavelength bands above 1.2 microns. In a specific example embodiment, a mirror or cladding layer is grown over the active region in a manner that removes nitrogen complex otherwise present with Ga—N bonds in the active region. The embodiment can be implemented as one of a number of configurations including vertical cavity surface emitting lasers (VCSEL) and edge emitting lasers.

US Patent:

20050202614, Sep 15, 2005

Filed:

Mar 9, 2005

Appl. No.:

11/075951

Inventors:

Sylvia Spruytte - Palo Alto CA, US
Michael Larson - Walnut Creek CA, US
James Harris - Stanford CA, US
Christopher Coldren - Sunnyvale CA, US

International Classification:

H01L021/338
H01S005/00

US Classification:

438167000, 438021000, 438047000

Abstract:

In an active region of an optical-electronic semiconductor device, nitrogen is incorporated in a barrier adjacent a GaNAs-based (e.g., GaInNAs) quantum well to improve device performance at wavelength bands above 1.2 microns. In a specific example embodiment, a mirror or cladding layer is grown over the active region in a manner that removes nitrogen complex otherwise present with Ga—N bonds in the active region. The embodiment can be implemented as one of a number of configurations including vertical cavity surface emitting lasers (VCSEL) and edge emitting lasers.

US Patent:

20130294306, Nov 7, 2013

Filed:

Mar 13, 2013

Appl. No.:

13/800126

Inventors:

Michael Jason Giles - San Jose CA, US
Michael Larson - San Jose CA, US

Assignee:

APPLE INC. - Cupertino CA

International Classification:

H04W 76/02
H04W 52/02

US Classification:

370311, 370338

Abstract:

A device accesses a remote network using short-range connectability with another device providing shared access to the remote network.

US Patent:

20140010248, Jan 9, 2014

Filed:

Jul 5, 2012

Appl. No.:

13/542547

Inventors:

Michael C. Larson - Oakland CA, US

Assignee:

JDS Uniphase Corporation - Milpitas CA

International Classification:

H01S 3/10
G02B 6/34

US Classification:

372 20, 385 37

Abstract:

A spatially modulated waveguide Bragg grating mirror is suspended over a substrate by plurality of fingers extending laterally away from the waveguide centerline. The positions of the fingers are coordinated with the positions of crests and valleys of amplitude or phase modulation of the Bragg grating, to avoid disturbing the Bragg grating when it is tuned by heating. When the Bragg grating is heated, the heat flows through the fingers creating a quasi-periodic refractive index variation along the Bragg grating due to quasi-periodic temperature variation created by the heat flow from the grating through the supporting fingers. Due to coordination of the positions of supporting fingers with positions of the crests and valleys of modulation, the optical phase coherence is maintained along the Bragg grating, so that the spectral lineshape or filtering property of the Bragg grating is substantially preserved.

US Patent:

61051411, Aug 15, 2000

Filed:

Jun 4, 1998

Appl. No.:

9/090644

Inventors:

Michael S. Hanlon - San Jose CA
Michael E. Larson - Sunnyvale CA

Assignee:

Apple Computer, Inc. - Cupertino CA

International Classification:

G06F 132

US Classification:

713323

Abstract:

Power management techniques for external cache memories of computers are disclosed. The power management techniques operate to reduce power consumption of an external cache memory of a computer system by intelligently placing the external cache memory in a low power mode. In one embodiment of the invention, a computer operates using event loop and an idle loop. The computer generally remains in the event loop while there is activity that requires processing, but enters the idle loop when there is no activity so that power consumption is lowered. The power management techniques according to the invention reduce power consumption of the computer by placing the external cache memory in the low power state upon entering the idle loop, and then awakening the external cache memory as the microprocessor awakens or upon exiting the idle loop. The power savings provided by the invention are particularly suitable for use with battery powered computing devices.

US Patent:

61219673, Sep 19, 2000

Filed:

Aug 4, 1998

Appl. No.:

9/129469

Inventors:

Derek J. Foster - San Jose CA
Michael G. Lum - Sunnyvale CA
Michael E. Larson - Sunnyvale CA

Assignee:

Apple Computer, Inc. - Cupertino CA

International Classification:

G06F 300

US Classification:

345348

Abstract:

Improved techniques for controlling multiple media bays (expansion bays) of a computer system are disclosed. Status information (and possibly one or more control operations) for devices in media bays of a computer system can be displayed, for example, to identify devices that occupy the media bays and to indicate the removability of those devices. Software locks discourage a user from improper removal of media bay devices in a multiple media bay computer system. The software locks work not only during hot removal of locked media bay devices but also removal of locked media devices during a sleep state of the computer system. Also, a centralized media bay data storage area can be provided as well as a media bay driver for each media bay to permits easy access to information pertaining to the one or more media bays of the computer system. The centralized media bay data storage area can store information describing the current configuration of the media bays, including the number of media bays, contents of each media bay, etc.

US Patent:

20230070789, Mar 9, 2023

Filed:

Jul 18, 2022

Appl. No.:

17/867198

Inventors:

- Los Angeles CA, US
Laszlo Takacs - Fremont CA, US
Michael Larson - Fremont CA, US
Artem Mishin - Fremont CA, US

International Classification:

H04B 3/54
H05B 47/185

Abstract:

A network communication module (NCM), comprising: (a) a housing configured to connect to an outlet containing power wiring; (b) a PLC interface in said housing and electrically connected to said power wiring; (c) a legacy control interface configured for electrical connection with one or more downstream devices; (d) a microprocessor and memory configured for causing said microprocessor to perform at least the following steps: communicate over the powerline via PLC to at least receive control signals or transmit data related to said one or more downstream devices, and communicate with said one or more downstream devices via said legacy control interface to transmit control signals or receive said data from one or more said downstream devices.