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To enable the quick applications and services of new-born innovative optical network service (INS) in large-scale high-end grid computing, we propose an overlay approach to integrate grid and emerging INS resources establishing the value-added optical grid network flexibly cross over multi-domain WSONs. In particular, we introduce an edge-mode approach which flexibly leverages new multi-function wavelength selective multicasting (WSM) at a special edge close to the core node. To integrate grid and innovative optical network technologies efficiently, we propose a unified platform-optical grid/INS network infrastructure (OGINI). Through field trial experiments over a developed metropolitan-scale wavelength switched optical network (WSON) test-bed, the feasibility of the proposed WSM scheme in the optical transmission systems and the totally automated value-added OGN constructions supported by the proposed OGINI have been verified successfully.