Abstract: The present invention relates to an emergency assistance beacon signal methodology for law enforcement, emergency and military personnel by which such personnel who encounter an imminent need for assistance or rescue while on duty in a vehicle, may utilize such methodology to invite the assistance or rescue of other such personnel. Upon a first personnel determining that assistance or rescue is needed, the first personnel activate a powerful light element attached to a such that the powerful light directs a beam of light upwardly and non-horizontally from the vehicle. Upon a second personnel recognizing the beam of light, travels to a general area of the beam of light to locate the first and provides first personnel assistance or rescue.

Abstract: The present invention is directed at an all-fiber in line isolator. The basic isolator includes a monomode optical fiber, a multimode waveguide, a coil or other traditional means to generate a magnetic field, and a fiber block or other traditional means to couple the fiber to the waveguide. In one embodiment, the fiber has a core and a cladding, and maintains a circular state of light polarization. The fiber has a coupling region where the cladding is partially removed. The waveguide evanescently couples to the fiber along the coupling region. The waveguide has magneto-optical properties such that applying a magnetic field along it causes backward propagating light to transfer to the waveguide with minimal disturbance to forward propagating light. Other embodiments using birefringent optical fibers are disclosed as well.

Abstract: A sensing system with a multichannel fiber optic bundle (MFOB) sensitive probe for measuring displacement, vibrations, roughness and two angles between a probe tip and light reflected target. The MFOB sensitive probe includes three branches of transmitting and receiving channels. The tip end of the MFOB is arranged in a rectangular 3*3 matrix formation. The other end of the MFOB includes eleven optical tips and connectors for optically connecting the tip of each channel, through optical filters, with light sensors and light sources. The sensing system further includes an electronic portion, having a thermostabilized box, an analog portion of an electronic module, a multifunction input/output board for use with a computer, and a controller for programmably controlling and measuring all parameters using computer analysis.