Invention Grant
- Patent Title: Directionless reconfigurable optical add and drop mesh node
- Patent Title (中): 无方向可重构光学添加和删除网格节点
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Application No.: US11831545Application Date: 2007-07-31
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Publication No.: US08670669B2Publication Date: 2014-03-11
- Inventor: Maurizio Gazzola , Ronald Johnson , Lorenzo Ghioni
- Applicant: Maurizio Gazzola , Ronald Johnson , Lorenzo Ghioni
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Main IPC: H04J14/02
- IPC: H04J14/02 ; H04J14/00

Abstract:
A reconfigurable optical add/drop multiplexer (ROADM) with a multiplexer, demultiplexer, and a wavelength cross-connect unit provides directionless capabilities. The ROADM allows a signal not to be limited to a particular direction when added at an optical network node, for example. The signal can be sent to other directions of the optical network node. Furthermore, the ROADM allows the wavelengths of add and drop signals to be changed and hence is “colorless.”
Public/Granted literature
- US20090034978A1 Directionless Reconfigurable Optical Add and Drop Mesh Node Public/Granted day:2009-02-05
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