Drift of reconstructing wavelength of volume holograms may occur because of the emulsion shrink of silver salt holographic plate.
银盐全息干版的乳胶收缩将导致其记录的反射全息图再现光的波长漂移。
2
The shift of reflective wavelength of one FBG under external strain is translated into a change in time interval of the optical pulse from another FBG drived by a PZT plate.
The ultrasonic transducer vibrates longitudinally, its front cover plate links up with a half wavelength circular conical horn to increase the amplitude of the output end of the ultrasonic transducer.