Fig.1 The set-up for the Measurement of rotating vibration isolated system with a single mode fiber. A wireless CCD camera is mounted to trace the screen and a video frame grabber to analyze the fringe variations.

Fig.2 Geometrical relations for a oblique reflection of a Michelson interferometer.

a : inclination angle between mirror 1 and mirror 2,

q : the incident angle,

d0 : the distance from the original point of the rectangular coordinate system

on mirror 1' to the mirror 2,

x,y : the rectangular coordinate values of the fringe location on the mirror 1',

h : the distance from the original point of the rectangular coordinate system

on mirror 1' to the optical fiber head.

Fig.3 (a) video image no. 1 of hyperbolic fringes before moving

(b) video image no. 2 of hyperbolic fringes which is moving

Fig.4 (a) video image no. 1 after thinning operation of digital image processing

(b) video image no. 2 after thinning operation of digital image processing

Fig.5 (a) computer simulation of a hyperbolic fringes corresponding to the video image no. 1

(b) computer simulation of a hyperbolic fringes corresponding to the video image no. 2

Fig.6 The jump of fluctuation recorded on the polar coordinate chart paper. The scale 1 : 20000 represent the table vibration amplitude is 0.6 m m. The time of the style start to move occurs in the mean while the interferometry fringes begin to move.