TY - GEN AU - Danielson, B L AU - Franzen, D L AU - Gallawa, R L AU - Kim, E M AU - Young, M C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1982-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.82-1661 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1982 TI - Characterization of a concentric-core fiber: ER -