TY - JOUR AU - Tasshi Dennis AU - Paul Hale C2 - Optics Express DA - 2011-09-29 LA - en M1 - 19 PB - Optics Express PY - 2011 TI - High-Accuracy Photoreceiver Frequency Response Measurements at 1.55 um by Use of a Heterodyne Phase-Locked Loop ER -