TY - JOUR AU - Saez Landete, José AU - Salcedo Sanz, Sancho AU - Rosa Zurera, Manuel AU - Alonso Fernández, José AU - Bernabeu Martínez, Eusebio PY - 2007 DO - 10.1109/LPT.2007.900334 SN - 1041-1135 UR - https://hdl.handle.net/20.500.14352/51180 T2 - Ieee Photonics Technology Letters AB - In grating measurement systems, a reference signal is needed to achieve an absolute measurement of the position. The zero reference signals are normally obtained illuminating two identical superimposed zero reference codes (ZRCs) and registering the... LA - eng M2 - 1133 PB - IEEE (Institute of Electrical and Electronics Engineers) KW - Design TI - Generation of optical reference signals robust to diffractive effects TY - journal article VL - 19 ER -