William A Wong

US Patent:

6396623, May 28, 2002

Filed:

Jan 31, 2001

Appl. No.:

09/772847

Inventors:

Paul F. Wysocki - Flemington NJ
William S. Wong - San Jose CA

Assignee:

Onetta, Inc. - Sunnyvale CA

International Classification:

H01S 300

US Classification:

3593374, 359349

Abstract:

Amplifiers having multiple gain stages are provided. Some of the gain stages provide gain in a first wavelength band and some of the gain stages provide gain in a second wavelength band. The gain stages that provide gain in the first band are interleaved with the gain stages that provide gain in the second band. The gain stages may be based on rare-earth-doped fiber amplifiers, Raman-pumped fiber amplifiers, or other suitable optical amplifiers. Gain stages may be used that include parallel amplifier branches. Each of the parallel branches may handle a separate wavelength range.

US Patent:

6556340, Apr 29, 2003

Filed:

May 9, 2001

Appl. No.:

09/851379

Inventors:

Paul F. Wysocki - Flemington NJ
William S. Wong - San Jose CA

Assignee:

Onetta, Inc. - Sunnyvale CA

International Classification:

H01S 300

US Classification:

359334

Abstract:

Optical amplifiers and upgrade modules for the optical amplifier are provided. The optical amplifiers and upgrade modules may be used to amplify optical signals in fiber-optic communications networks. Optical gain may be produced by erbium-doped fiber amplifier stages and Raman amplifier arrangements. When an upgrade module is used to upgrade an amplifier, the light that is provided to the upgraded amplifier may be routed through optical components in the upgrade module. The upgrade module may be used to expand the optical bandwidth of the amplifier or to add Raman preamplification capabilities. When the upgrade module is used to add Raman gain, erbium-doped fiber that was used in the amplifier prior to upgrading may be removed from the optical path during the upgrade process to help maintain the desired spectral shape for the upgraded amplifier. Dynamic and passive filters may also be used to help maintain a desired spectral shape. Hot upgrades may be performed using the amplifiers and upgrade modules.

US Patent:

42964547, Oct 20, 1981

Filed:

Oct 22, 1979

Appl. No.:

6/086724

Inventors:

William H. Wong - Morristown NJ

Assignee:

Bell Telephone Laboratories, Incorporated - Murray Hill NJ

International Classification:

H05K 712

US Classification:

361380

Abstract:

A circuit support enclosure has drop-in receptacles in a base chassis structure for individual circuit components. After circuit components are placed in the drop-in receptacles, a retaining chassis structure is mated with the base chassis structure. The base chassis structure includes two tongs which have pawls which interlock with slots in the retaining chassis structure. The retaining chassis structure includes bifurcated retainers and clamp nodules that clamp the electrical components into their respective drop-in receptacles in the base chassis structure.