TY - GEN AU - Smelser,C W AU - Grobnic,D AU - Mihailov,S J TI - Generation of pure two-beam interference grating structures in an optical fiber with a femtosecond infrared source and a phase mask SN - 0146-9592 PY - 2004///1005 N1 - Publication Type: Journal Article UR - https://doi.org/10.1364/ol.29.001730 ER -