Invention Grant
- Patent Title: Redundancy protection for reconfigurable optical add/drop multiplexing (ROADM) branching unit
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Application No.: US15279399Application Date: 2016-09-28
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Publication No.: US09866346B2Publication Date: 2018-01-09
- Inventor: Philip Nan Ji , Ting Wang , Ryuji Aida
- Applicant: NEC Laboratories America, Inc.
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Agent Joseph Kolodka
- Main IPC: H04J14/02
- IPC: H04J14/02 ; H04Q11/00
Abstract:
Aspects of the present disclosure describe systems, structures and methods providing fully reconfigurable optical add-drop multiplexing (ROADM) that provide redundancy protection against any two (2) simultaneous wavelength selective switch (WSS) failures with only four 2×1 WSS structures for both Eastbound and Westbound traffic, while not requiring bidirectional operation of the WSS structures.
Public/Granted literature
- US20170117982A1 REDUNDANCY PROTECTION FOR RECONFIGURABLE OPTICAL ADD/DROP MULTIPLEXING (ROADM) BRANCHING UNIT Public/Granted day:2017-04-27
Information query
