Ciena Corporation

Marc De La Durantaye

David W Boertjes

Choudhury A Al Sayeed

David Atkinson

Choudhuty A Al Sayeed

Systems and methods of optical restoration include, with a photonic service (), in an optical network (), operating between two nodes (A, Z) via an associated optical modem () at each node, wherein each modem () is capable of supporting variable capacity, C, C, . . . , Cwhere C&#x3e;C&#x3e; . . . &#x3e;C, detecting a fault () on a home route of the photonic service () while the photonic service () operates at a home route capacity C, Cis one of C, C, . . . , C; downshifting the photonic service () to a restoration route capacity C, Cis one of C, C. . . , Cand C&#x3c;C; switching the photonic service () from the home route to a restoration route () while the photonic service () operates at a restoration route capacity C; and monitoring the photonic service () and copropagating photonic services during operation on the restoration route () at the restoration route capacity Cfor an upshift of the photonic service ().

Systems and methods for achieving best effort home route capacity on protection paths during optical restoration

Systems and methods of optical restoration include, in an optical network with a photonic service operating between two nodes via an associated optical modem at each node, wherein each modem is capable of supporting variable capacity, C, C, . . . , Cwhere C&#x3e;C&#x3e; . . . &#x3e;C, detecting a fault on a home route of the photonic service while the photonic service operates at a home route capacity C, Cis one of C, C, . . . , C; downshifting the photonic service to a restoration route capacity C, Cis one of C, C. . . , Cand C&#x3c;C; switching the photonic service from the home route to a restoration route while the photonic service operates at a restoration route capacity C; and monitoring the photonic service during operation on the restoration route at the restoration route capacity Cfor an upshift.

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Ottawa, Canada

Marc De La Durantaye