US 7,254,336 B2Granted

Method of seamless migration from scaleable OADM to a network switching node

AssigneeAltera Corporation

InventorsGordon Harney, Jonathan Bosloy, Hanan Anis, Reza Paiam, John Gruber

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Abstract

A method is provided for seamless migration from a scaleable optical add/drop multiplexer to a network switching node in an optical transport network. The method includes: providing a pre-deployed optical add/drop multiplexer (OADM) at a network node in the optical transport network; introducing an additional optical add/drop multiplexer (OADM) at the network node; and interconnecting the pre-deployed OADM to the additional OADM using a photonic cross-connect switch, where the photonic cross-connect switch is operable to route optical signals amongst the optical transport lines connected to the pre-deployed OADM and the upgraded OADM.

Claims7

Dependent claims

A method for seamless migration from a scaleable optical add/drop multiplexer to a network switching node in an optical transport network, comprising:

providing a pre-deployed optical add/drop multiplexer (OADM) at a network node in the optical transport network, the pre-deployed OADM configured to support at least two optical transport lines;
introducing an added optical add/drop multiplexer (OADM) at the network node, the added OADM configured to support at least two optical transport lines;
and
interconnecting the pre-deployed OADM to the added OADM using a photonic cross-connect switch, where the photonic cross-connect switch is operable to route optical signals amongst the optical transport lines connected to the pre-deployed OADM and the added OADM;
configuring each of the pre-deployed OADM and the added OADM with at least one upgrade inlet port and at least one upgrade outlet port, such that the photonic cross-connect switch is connected via the upgrade inlet ports and the upgrade outlet ports to the pre-deployed OADM and the added OADM;
receiving an optical multiplexed signal at a first port of the pre-deployed OADM, the optical multiplexed signal having a plurality of data signals embodied therein;
splitting the optical multiplexed signal into a pass-thru multiplexed signal and an outgoing routable multiplexed signal;
and
routing the outgoing routable multiplexed signal via an upgrade outlet port to the photonic cross-connect switch.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/348,818Filed 22 Jan 2003 · continuation in part
Priority: 23 Jan 2002
Published: US 2003/0175029 A118 Sep 2003
Granted: 7 Aug 2007
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

H04Q 11/0062
Using optical switching: network aspects
H04J 14/0204
Arrangements therefor: broadcast and select arrangements, e.g. with an optical splitter at the input before adding or dropping
H04J 14/0205
Arrangements therefor: select and combine arrangements, e.g. with an optical combiner at the output after adding or dropping
H04J 14/0206
Arrangements therefor: express channels arrangements

Family

Application10/054,775Parent of this continuation-in-part · filed 23 Jan 2002
US 2003/0175029 A1Pre-grant publication · published 18 Sep 2003
US 6,999,681 B2Parent of this continuation-in-part
US 2004/0208548 A1Published application
US 7,254,336 B2This patent

From the US filing history. Foreign family members aren’t listed.