Based on fine optical grating and micrometer, one closed-loop high-precision position control system with two modes has been made. The system is used to control the optical elements moving in two ways. That is, one control mode is automatically control with optical grating feedback system and the other mode is manually control with micrometer. Under the support of conservative PID control algorithm, the precision of the system is up to ±0.1&mgr;m while operating on automatically way, otherwise, the position precision is ±1&mgr;m.
Gird Optical Network Service (GONS) integrates optical networks with Gird services to utilize their numerous benefits.
A flexible and simple user network interface between GONS and GMPLS control plane is proposed and its effectivity is
verified on the Parallel Lightpath-on-Demand Grid testbed.
Geographically-distributed computing application for science and enterprise are emerging services for providers, and the
optical network is expected to be involved in such the grid computing application by using GMPLS protocols for its high
performance. In the optical grid network, network delay and fault recovery time are very important for some special
distributed application. However, bandwidth guarantee and dynamic bandwidth provisioning are achieved by the cost of
LSP setup delay. In this paper, a parallel GMPLS-based signaling method is proposed to decrease the connection setup
time effectively so as to provide fast dynamic bandwidth for grid applications. We implement this novel method on our
optical grid network test-bed (GOGrid) and draw the conclusions.