Chandalia, J., D.J. DiGiovanni, B.J. Eggleton, S. G. Kosinski, X. Liu, R. S. Windeler, and C. Xu.
Process for Fabricating Tapered Microstructured Fiber System and Resultant System” US Patent 6,658,183. (December 2, 2003)  >>> Link

Process for Fabricating Tapered Microstructured Fiber System and Resultant System