1pEA7. Vibration isolation and detection using a mesoscopic photomechanical unit.

Session: Monday Afternoon, June 16

Author: Christopher S. Kwiatkowski
Location: Sentel Technologies, NE 1615 Eastgate Blvd., Box 41-1, Pullman, WA 99163
Author: David Welker
Location: Sentel Technologies, Pullman, WA 99163
Author: Mark G. Kuzyk
Location: Washington State Univ., Pullman, WA 99164-2814


Due to the high bandwidth of light, optical fibers are being used extensively in data communication systems, and more recently have found applications in sensors capable of monitoring environmental changes such as stress, displacement, temperature, and chemical concentrations. An active region consisting of a Fabry--Perot cavity inside a nonlinear polymer optical fiber, called a Mesoscopic Photomechanical Unit (MPU), has been studied that has applications in both sensing and vibration isolation. These devices consist of a PMMA core doped with DR1 organic dye. It has been shown that the length of these MPUs has a series of stable states, the stability of which is dependent on the intensity of guided light inside the fiber. Preliminary data show that a vibration sensor incorporating an MPU as its sensing element has the advantage of having an intensity-dependent response. This effect could be used to include all-optical logic within the device, making external electronics unnecessary. [Research supported by NASA and ARO.]

ASA 133rd meeting - Penn State, June 1997