We report a novel compact all-fiber technique to control the beam propagation and beam pattern in free space. By coating an azo-polymer thin film layer on the optical fiber end surface, various surface relief grating (SRG) structures were inscribed over the film using a single step direct exposure of interference patterns to form a novel organic/inorganic composite fiber optics beam shape converter. The linear and concentric SRGs were experimental characterized along with numerical simulations.
Bibliographical noteFunding Information:
This work was supported in part by the KOSEF (Program Nos. R01-2006-000-11277-0 and R15-2004-024-00000-0) and the Scientific and Technological Cooperation program between Italy and South Korea from MOST, Korea.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Control and Systems Engineering
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering