Multipoint Refractometer Based on Combined Correlation and Frequency Multiplexing Lopez, Jorge H. ; Esteban, Oscar ; Shlyagin, Mikhail G. ; Martinez-Manuel, Rodolfo Abstract Publication: IEEE Photonics Technology Letters Pub Date: September 2017 DOI: 10.1109/LPT.2017.2723464 Bibcode: 2017IPTL...29.1479L