Before revision: Measuring principle—OTDR and OFDR technology There are two basic principles of measurement for distributed sensing technology, OTDR ( Optical Time Domain Reflectometry ) and OFDR ( Optical Frequency Domain Reflectometry ).
After revision: Measuring principle—OTDR and OFDR technology There are two basic principles of measurement for distributed sensing technology, OTDR ( optical time-domain reflectometry ) and OFDR ( optical frequency-domain reflectometry ).