Abstract: A method of drawing different materials includes forming a first material into a preform body defining at least one channel extending therethrough having a first cross-sectional area. A first element formed of a second material is inserted into the channel and with the preform body creates a preform assembly. The first element has a cross-sectional area that is less than the cross-sectional area of the channel, and the second material has a higher melting temperature than the first material. The preform assembly is heated so that the first material softens and the preform assembly is drawn so that the preform body deforms at a first deformation rate to a smaller cross-sectional area and the first element substantially maintains a constant cross-sectional area throughout the drawing process. Upon completion of the drawing step, the cross-sectional area of the channel is equivalent to the cross-sectional area of the first element.

Abstract: A method of poling and calibrating electro-optic fibers is disclosed. Metal electrodes are used to utilize the electro-optic effect to impart phase delays to the optical signal. Moreover, one or more electrodes may be used for heating of the device to reach softening temperatures of the electro-optic material, which allows easy, effective and efficient poling of the electro-optic material. A method based on continuous or periodic optical feedback is used to automatically calibrate the electro-optic device when its performance degrades with time to relaxation of molecular orientations.

Abstract: A method of poling and calibrating electro-optic fibers is disclosed. Metal electrodes are used to utilize the electro-optic effect to impart phase delays to the optical signal. Moreover, one or more electrodes may be used for heating of the device to reach softening temperatures of the electro-optic material, which allows easy, effective and efficient poling of the electro-optic material. A method based on continuous or periodic optical feedback is used to automatically calibrate the electro-optic device when its performance degrades with time to relaxation of molecular orientations.