Grid architecture is the frame of the grid environment, and the grid security architecture is the indemnity of the grid architecture. The reasonable grid architecture is the core of the establishment of good grid. Only could they establish the reasonable grid architecture, they can design and build the good grid system. In this paper we put the security architecture into the small grid environment which is set up in a school’s lab. This experiment provides the useful experience for us to put the security architecture into the actual grid environment and make the big contribution for the further study of grid.
Based on the temperature dependence of the intensity of Brillouin scattering in optical fiber, a distributed optical fiber temperature sensing experimental system with Brillouin OTDR configuration was presented. In this system, a narrow line width LD was used as a light source. The output of LD was modulated into light pulses by an AOM. After amplified by an EDFA the light pulses were coupled into the test fiber to generate backscattering signal. A double-pass Mach-Zehnder interferometer was used to separate the spontaneous Brillouin scattering from the Rayleigh scattering. The temperature sensing experiments were carried out on two different length of fibers which were 4.25 km and 22 km long, respectively. The intensity changes in the Brillouin scattering signals due to temperature variation on both of the fibers were measured.