Abstract: This application relates generally to an optical fiber for the delivery of infrared light where the polarization state of the light entering the fiber is preserved upon exiting the fiber and the related methods for making thereof. The optical fiber has a wavelength between about 0.9 ?m and 15 ?m, comprises at least one infrared-transmitting glass, and has a polarization-maintaining (PM) transverse cross-sectional structure. The infrared-transmitting, polarization-maintaining (IR-PM) optical fiber has a birefringence greater than 10?5 and has applications in dual-use technologies including laser power delivery, sensing and imaging.

Abstract: A self releasing connector for a log choker has double ended jaws that are pivotally movable between an open and a closed position. A biasing spring urges the jaws to normally open position. With jaws open an end of choker cable is insertable and the jaws are closed to retain the end of the choker. A holder is slidably movable to retain the jaws in the closed position. The choker cable is extended through eyelets on the opposite ends of the jaws. Tension applied to the choker cable will force further closing of the jaws and the holder is released. Upon release of the tension on the choker cable the spring urges the jaws open to release the end of the choker cable. An auxiliary lock may be provided to maintain the holder in position to maintain the jaws in the locked position.