Man Yee Wong

US Patent:

20030109142, Jun 12, 2003

Filed:

Jun 24, 2002

Appl. No.:

10/179687

Inventors:

James Cable - San Diego CA, US
Man Wong - San Diego CA, US
Michael Stuber - Carlsbad CA, US
Charles Kuznia - Encintas CA, US
Joseph Ahadian - Carlsbad CA, US

International Classification:

H01L021/302
H01L021/461

US Classification:

438/708000, 438/689000

Abstract:

An integrated photodetector means for controlling the output of a light source, where the control means is a photodetector formed on a silicon-on-insulator substrate. The integrated photodetector senses the optical power from the light source and provides an electrical feedback signal which can be used to adjust the DC bias levels of the light source control driver circuit. The approach readily lends itself to large arrays of light sources bonded to silicon-on-sapphire driver circuits and is especially suitable for controlling light sources such as VCSELs in arrays such as are found in communications systems.

US Patent:

20210318183, Oct 14, 2021

Filed:

Apr 9, 2021

Appl. No.:

17/227059

Inventors:

- Vista CA, US
Sandra SKENDZIC - Vista CA, US
Man W. WONG - San Diego CA, US
Charles B. KUZNIA - Encinitas CA, US

International Classification:

G01K 11/3206

Abstract:

Methods and devices for a single wavelength fiber optic sensor system are described. Sensing is based on relative shift in spectral responses of two co-located fiber gratings (FBGs) within a fiber optic cable and measured at one measurement wavelength. Under a range of conditions of interest, the shift in spectral responses maintains the measurement wavelength within respective slopes of the spectral responses. A normalized difference in reflected power is used to desensitize the measurement from any variation in power of the single laser power and/or in loss through the fiber optic cable. Several pairs of co-located FBGs may be used within the same fiber optic cable, each pair used for sensing at a corresponding location. An OTDR system couples light pulses at the measurement wavelength to the fiber optic cable, and measures amplitudes and timing of corresponding reflected light pulses to perform the normalized difference.

US Patent:

20190353851, Nov 21, 2019

Filed:

Nov 26, 2018

Appl. No.:

16/200139

Inventors:

- Vista CA, US
Man W. Wong - San Diego CA, US

International Classification:

G02B 6/38

Abstract:

A protective assembly method using a transparent layer within the fiber interconnect system aids in optical coupling by preventing an air gap from forming between the fiber cores within a connector. A fiber protection device made of a thin transparent film, which includes an adhesive layer, is applied over the fiber end-faces at the connector interface, the film having characteristics which allows it to conform to the fiber end and minimize coupling loss between fibers. According to one aspect, the film is part of a cartridge that provides structural support for the film to facilitate application of the fiber protection device. The film may be divided by perforate patterns that define one or more fiber protection devices formed by the film. The assembly method can include usage of an applicator base plate upon which the cartridge is mounted. According to another aspect, the film may be part of a single-use disposable pod for application of a single fiber protection device.

US Patent:

20190154926, May 23, 2019

Filed:

Nov 16, 2018

Appl. No.:

16/194184

Inventors:

- Vista CA, US
Richard J. Pommer - Carlsbad CA, US
Joseph F. Ahadian - San Marcos CA, US
Richard T. Hagan - Mission Viejo CA, US
Man W. Wong - San Diego CA, US

International Classification:

G02B 6/38

Abstract:

A protective assembly method using a transparent layer within the fiber interconnect system aids in optical coupling by preventing an air gap from forming between the fiber cores within a connector. A thin transparent film (or with adhesive) is placed over the fiber end-faces at the connector interface, the film having characteristics which allows it to conform to the fiber end and minimize coupling loss between fibers. The film is sized to fit connectors faces and can be temporary, being replaced with each installation. A coating can also applied to the connector surface, providing a similar effect, as well as structurally enhancing the connector surfaces.

US Patent:

20180011259, Jan 11, 2018

Filed:

Sep 8, 2017

Appl. No.:

15/699484

Inventors:

- Vista CA, US
Richard J. Pommer - Carlsbad CA, US
Joseph F. Ahadian - San Marcos CA, US
Richard T. Hagan - Mission Viejo CA, US
Man W. Wong - San Diego CA, US

International Classification:

G02B 6/38

Abstract:

A protective assembly method using a transparent layer within the fiber interconnect system aids in optical coupling by preventing an air gap from forming between the fiber cores within a connector. A thin transparent film (or with adhesive) is placed over the fiber end-faces at the connector interface, the film having characteristics which allows it to conform to the fiber end and minimize coupling loss between fibers. The film is sized to fit connectors faces and can be temporary, being replaced with each installation. A coating can also applied to the connector surface, providing a similar effect, as well as structurally enhancing the connector surfaces.

US Patent:

20150378108, Dec 31, 2015

Filed:

Jun 28, 2015

Appl. No.:

14/752986

Inventors:

- Vista CA, US
Richard J. Pommer - Carlsbad CA, US
Joseph F. Ahadian - San Marcos CA, US
Richard T. Hagan - Mission Viejo CA, US
Man W. Wong - San Diego CA, US

International Classification:

G02B 6/38

Abstract:

A protective assembly method using a transparent layer within the fiber interconnect system aids in optical coupling by preventing an air gap from forming between the fiber cores within a connector. A thin transparent film (or with adhesive) is placed over the fiber end-faces at the connector interface, the film having characteristics which allows it to conform to the fiber end and minimize coupling loss between fibers. The film is sized to fit connectors faces and can be temporary, being replaced with each installation. A coating can also applied to the connector surface, providing a similar effect, as well as structurally enhancing the connector surfaces.