Xing X Ma, Age 72605 Arcadia Ter, Sunnyvale, CA 94085

Xing Ma Phones & Addresses

605 Arcadia Ter, Sunnyvale, CA 94085 (408) 736-6755 (408) 738-9299

San Francisco, CA

Mentions for Xing X Ma

Business Records

Name / TitleCompany / ClassificationPhones & Addresses
Xing Ma
Pegasusmax Web Design 1575 Tenaka Pl, Sunnyvale, CA 94087


Us Patents

Configurable Optical Add/Drop Device

US Patent:
6219474, Apr 17, 2001
Mar 24, 1999
Appl. No.:
Bo Cai - San Jose CA
Xing Ma - Sunnyvale CA
Gang Lei - San Jose CA
Jyehong Chen - San Jose CA
E-Tek Dynamics - San Jose CA
International Classification:
G02B 6293
US Classification:
385 24
An add/drop device is described that allows channels from a multi-channel optical path to be dropped to a device and a new or modified channel to be added to the multi-channel optical path. The device thereby has access to a channel from the multi-channel optical path without having access to all of the channels. In one embodiment, the add/drop device of the invention includes one or more intermediate ports and a switch. The intermediate ports communicate the channels not dropped by the add/drop device and the switch selectively optically couples the dropped channel either to the device or to be added back into the multi-channel path. The switch also selectively optically couples the new or modified channel to be added to the multi-channel path. The one or more intermediate ports allow multiple add/drop devices to be optically coupled together to provide a configurable add/drop mechanism. The configurable add/drop mechanism allows channels from the multi-channel optical path to be provided to devices without the need of physically adding or removing an add/drop device from the multi-channel optical path.

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