R. Herschel, M. Jastram, S. Gaede, and C. G. Schaeffer, "Cost Efficient Optical FMCW scheme for long range high resolution detection,"
in National Fiber Optic Engineers Conference,
OSA Technical Digest
(Optical Society of America, 2012), paper NM2K.3.
High resolution optical network monitoring based on FMCW using a standard DFB laser is presented. By tracking the chirp rate dependent target position the spatial resolution is increased to 5m keeping 100km range.